Alert archive / Washington / Winter Storm Warnings in 2017

Winter Storm Warning 14, NWS Spokane, WA

December 28, 20175 counties in Washington

NWS Spokane, WA issued this winter storm warning at Dec 28, 2017, 9:33 AM PST for 5 counties in Washington. It took effect at Dec 29, 2017, 12:00 PM PST. It was in force for 15 hr. 11 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 28, 2017, 9:33 AM PST (17:33 UTC)
In effect from
Dec 29, 2017, 12:00 PM PST
Expired
Dec 30, 2017, 3:01 AM PST
In force
15 hr
Issued by
NWS Spokane, WA

Counties Ferry County, WA, Okanogan County, WA, Pend Oreille County, WA, Spokane County, WA, Stevens County, WA

The radar

The Spokane radar (KOTX), 81 km from the middle of the area, began a volume at 17:38 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Dec 29, 3:00 PM PSTSNOW 3Colville, WAREPORT VIA SOCIAL MEDIA.
Dec 29, 3:55 PM PSTSNOW 21 Nnw Oroville, WA2 OF NEW SNOW SINCE 9:30AM. 3.5 TOTAL SNOW ON THE GROUND.
Dec 29, 4:00 PM PSTSNOW 6Springdale, WAREPORT VIA SOCIAL MEDIA.
Dec 29, 6:00 PM PSTSNOW 3Brewster, WAREPORT VIA SOCIAL MEDIA.
Dec 29, 6:00 PM PSTSNOW 53 Sw Pateros, WAREPORT VIA SOCIAL MEDIA.
Dec 29, 6:00 PM PSTSNOW 6Newman Lake, WAREPORT VIA SOCIAL MEDIA.
Dec 29, 6:00 PM PSTSNOW 7Spokane Valley, WAREPORT VIA SOCIAL MEDIA.
Dec 29, 7:00 PM PSTSNOW 5Orient, WAREPORT VIA SOCIAL MEDIA.
Dec 30, 12:00 AM PSTSNOW 1.73 Se Airway Heights, WASTORM TOTAL 2.6 SINCE 12/28.
Dec 30, 12:00 AM PSTSNOW 3.33 Nw Airway Heights, WACO-OP OBSERVER STATION OTX, SPOKANE, WA.
Dec 30, 1:03 AM PSTSNOW 3.33 Nw Airway Heights, WASTORM TOTAL 3.7 SINCE 12/28.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 5.6 hours before the alert went out and 148 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Spokane, WA at 12:00Z on 2017-12-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 2017-12-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 310 square meters per square second.1939587897117136156Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
431 m above ground
0-6 km bulk shear
88 kt
0-1 km storm-relative helicity
310 m²/s²
0-3 km storm-relative helicity
263 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

202 
WWUS46 KOTX 281733
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
933 AM PST Thu Dec 28 2017

...Prolonged period of accumulating moderate to heavy snow
expected...

.A pair of moist Pacific storm systems will impact the region
beginning today and then again Friday and Friday night. The
Cascade crest and Idaho Panhandle will see the heaviest snow today
with more widespread snow north of I-90 and in the mountains on 
Friday. In addition parts of the Columbia Basin and vicinity may 
experience Freezing rain Thursday night through early Friday 
morning that may result in ice accumulations of a light glaze to 
one tenth of an inch before changing to all rain later Friday.

WAZ037-038-290700-
/O.CAN.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
/O.NEW.KOTX.WS.W.0014.171229T2000Z-171230T1800Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Deer Park, Chewelah, 
Newport, Kettle Falls, Springdale-Hunters Road, Orin-Rice Road, 
Flowery Trail Road, Republic, Inchelium, Wauconda, Chesaw Road, 
Highway 20 Wauconda Summit, Boulder Creek Road, and Sherman Pass
933 AM PST Thu Dec 28 2017

...WINTER STORM WARNING IN EFFECT FROM NOON FRIDAY TO 10 AM PST
SATURDAY...

* WHAT...Light snow possible through Friday morning, then heavy 
  snow expected. Plan on difficult travel conditions, including 
  during the evening commute on Friday. Total snow accumulations 
  of 5 to 9 inches, with mountain accumulations 8 to 12 inches.

* WHERE...Colville, Deer Park, Chewelah, Newport, Kettle Falls, 
  Springdale-Hunters Road, Orin-Rice Road, Flowery Trail Road, 
  Republic, Inchelium, Wauconda, Chesaw Road, Highway 20 
  Wauconda Summit, Boulder Creek Road, and Sherman Pass.

* WHEN...Noon Friday to 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are expected. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ026-027-281845-
/O.CAN.KOTX.WW.Y.0040.000000T0000Z-171228T1800Z/
Lewiston Area-Lewis and Southern Nez Perce Counties-
933 AM PST Thu Dec 28 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

Little to no additional snow accumulations are expected for the
rest of today.  


$$

WAZ042-290700-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, and Loup Loup Pass
933 AM PST Thu Dec 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy snow occurring near the Cascade crest today,
  becoming widespread Friday. Plan on difficult travel conditions.
  Snow may briefly mix with freezing rain around Leavenworth and
  Plain through the evening. In the valleys the heaviest snow is
  expected Friday afternoon and evening. Total snow accumulation
  of 6 to 12 inches in the valleys, with mountain accumulations 
  of 2 to 3 feet near the crest.

* WHERE...Leavenworth, Mazama, Twisp, Winthrop, Stehekin, 
  Conconully, Blewett Pass, and Loup Loup Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ001-004-290700-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
Northern Panhandle-Central Panhandle Mountains-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, Schweitzer Mountain Road, Kellogg, 
Pinehurst, Osburn, Wallace, Mullan, Fourth of July Pass, 
Dobson Pass, and Lookout Pass
933 AM PST Thu Dec 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulation in the
  valleys 14 to 20 inches north of Athol otherwise 8 to 14 inches.
  2 to 4 feet in the mountains. Travel will be very hazardous at
  times especially over the mountain passes. The valley of the
  Central Panhandle Mountains including Silver Valley will change
  to rain by Friday afternoon.

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, 
  Schweitzer Mountain Road, Kellogg, Pinehurst, Osburn, Wallace, 
  Mullan, Fourth of July Pass, Dobson Pass, and Lookout Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ002-003-290700-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171229T1200Z/
Coeur d'Alene Area-Idaho Palouse-
Including the following locations Coeur d'Alene, Post Falls, 
Hayden, Worley, and Plummer
933 AM PST Thu Dec 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY...

* WHAT...Heavy snow expected. Plan on difficult travel conditions,
  including the morning and evening commute on Thursday. Total
  snow accumulations of 4 to 8 inches. Freezing rain early Friday
  morning north of Moscow may result in ice accumulations of a 
  light glaze before changing to all rain later Friday.

* WHERE...Coeur d'Alene, Post Falls, Hayden, Worley, and Plummer.

* WHEN...Until 4 AM Friday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ033-036-290700-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171229T1200Z/
Washington Palouse-Spokane Area-
Including the following locations Rosalia, Oakesdale, Tekoa, 
Spokane, Cheney, Davenport, and Rockford
933 AM PST Thu Dec 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
FRIDAY...

* WHAT...Snow expected except changing to rain Pullman area this
  afternoon or evening. Plan on slippery road conditions,
  including the evening commute on Thursday. Total snow
  accumulations of 1 to 4 inches with the highest amounts near the
  Idaho border. Freezing rain early Friday morning Cheney and
  Rosalia areas may result in ice accumulations of a light glaze
  before changing to all rain later Friday.

* WHERE...Rosalia, Oakesdale, Tekoa, Spokane, Cheney, Davenport, 
  and Rockford.

* WHEN...Until 4 AM Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$

WAZ034-035-290700-
/O.CON.KOTX.WW.Y.0040.171229T0000Z-171229T1200Z/
Moses Lake Area-Upper Columbia Basin-
Including the following locations Moses Lake, Ephrata, Othello, 
Quincy, Ritzville, and Odessa
933 AM PST Thu Dec 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 4 AM PST FRIDAY...

* WHAT...Mixed precipitation expected. The ice will result in 
  difficult travel conditions. Total snow accumulations of up to 
  one inch and ice accumulations of up to one tenth of an inch 
  are expected Thursday night into early Friday before changing 
  to all rain Friday.

* WHERE...Moses Lake, Ephrata, Othello, Quincy, Ritzville, and 
  Odessa.

* WHEN...4 PM today to 4 AM Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of freezing rain
will cause travel difficulties. Be prepared for slippery roads.
Slow down and use caution while driving. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

&&

$$
10 follow-up statements
026 
WWUS46 KOTX 282252
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
252 PM PST Thu Dec 28 2017

...Prolonged period of accumulating moderate to heavy snow
expected...

.A pair of moist Pacific storm systems will impact the region
beginning today and then again Friday and Friday night. The
Cascade crest and Idaho Panhandle will see the heaviest snow
today with more widespread snow north of I-90 and in the
mountains on Friday. In addition parts of the Columbia Basin and
vicinity may experience Freezing rain Thursday night through
early Friday morning that may result in ice accumulations of a
light glaze to one tenth of an inch before changing to all rain
later Friday.

IDZ003-290000-
/O.CAN.KOTX.WS.W.0013.000000T0000Z-171229T1200Z/
Idaho Palouse-
252 PM PST Thu Dec 28 2017

...WINTER STORM WARNING IS CANCELLED...

Temperatures have risen to near freezing and will rise another
couple degrees through tonight. Thus the winter storm warning has
been cancelled as snow is expected to change to rain by this
evening.

$$

IDZ002-290700-
/O.EXT.KOTX.WS.W.0013.000000T0000Z-171229T2000Z/
Coeur d'Alene Area-
Including the following locations Coeur d'Alene, Post Falls, 
Hayden, and Worley
252 PM PST Thu Dec 28 2017

...WINTER STORM WARNING NOW IN EFFECT UNTIL NOON PST FRIDAY...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult
  travel conditions, including during the evening commute.
  Additional snow accumulations of 2 to 5 inches, and ice
  accumulations of up to one tenth of an inch are expected.

* WHERE...Coeur d'Alene, Post Falls, Hayden, and Worley.

* WHEN...Until noon Friday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ042-290700-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, and Loup Loup Pass
252 PM PST Thu Dec 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring tonight mainly near
  the crest then widespread precipitation Friday. Travel will be
  very difficult to impossible, including during the evening
  commute on Friday. Tree branches could fall as well resulting in
  power outages. Additional snow accumulations of 7 to 12 inches,
  with mountain accumulations of 2 to 3 feet near the crest, and
  ice accumulations of up to 0.2 inches Plain and Leavenworth
  areas.

* WHERE...Leavenworth, Mazama, Twisp, Winthrop, Stehekin, 
  Conconully, Blewett Pass, and Loup Loup Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. Strong winds are also possible. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

&&

$$

IDZ001-004-290700-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
Northern Panhandle-Central Panhandle Mountains-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, Schweitzer Mountain Road, Kellogg, 
Pinehurst, Osburn, Wallace, Mullan, Fourth of July Pass, 
Dobson Pass, and Lookout Pass
252 PM PST Thu Dec 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Travel will be very
  difficult to impossible, including during the evening commute on
  Friday. Additional valley snow accumulations of 10 to 15 inches
  north of Athol, with 2 to 6 inches valleys elsewhere including 
  the Silver Valley. Additional mountain snow accumulation of 15 
  to 30 inches.

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, 
  Schweitzer Mountain Road, Kellogg, Pinehurst, Osburn, Wallace, 
  Mullan, Fourth of July Pass, Dobson Pass, and Lookout Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ037-038-290700-
/O.CON.KOTX.WS.W.0014.171229T2000Z-171230T1800Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Deer Park, Chewelah, 
Newport, Kettle Falls, Springdale-Hunters Road, Orin-Rice Road, 
Flowery Trail Road, Republic, Inchelium, Wauconda, Chesaw Road, 
Highway 20 Wauconda Summit, Boulder Creek Road, and Sherman Pass
252 PM PST Thu Dec 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON FRIDAY TO
10 AM PST SATURDAY...

* WHAT...Heavy snow expected possibly changing to freezing rain
  Friday evening south of Republic and Chewelah. Plan on 
  difficult travel conditions, including during the evening 
  commute on Friday. Total snow accumulations of 4 to 8 inches, 
  with mountain accumulations up to 12 inches, and ice 
  accumulations of a light glaze are expected.

* WHERE...Colville, Deer Park, Chewelah, Newport, Kettle Falls, 
  Springdale-Hunters Road, Orin-Rice Road, Flowery Trail Road, 
  Republic, Inchelium, Wauconda, Chesaw Road, Highway 20 
  Wauconda Summit, Boulder Creek Road, and Sherman Pass.

* WHEN...Noon Friday to 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are expected. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ041-044-290700-
/O.EXB.KOTX.WW.Y.0040.171229T1200Z-171230T0200Z/
Wenatchee Area-Waterville Plateau-
Including the following locations Wenatchee, Chelan, Entiat, 
Cashmere, Waterville, Mansfield, and Badger Mountain Road
252 PM PST Thu Dec 28 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 6 PM PST
FRIDAY...

* WHAT...Mixed precipitation expected. Plan on slippery road
  conditions. Total snow accumulations of up to 2 inches, and ice
  accumulations of a light glaze are expected.

* WHERE...Wenatchee, Chelan, Entiat, Cashmere, Waterville, 
  Mansfield, and Badger Mountain Road.

* WHEN...4 AM to 6 PM Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$

WAZ034-035-290700-
/O.EXT.KOTX.WW.Y.0040.171228T2252Z-171229T2000Z/
Moses Lake Area-Upper Columbia Basin-
Including the following locations Moses Lake, Ephrata, Othello, 
Quincy, Ritzville, and Odessa
252 PM PST Thu Dec 28 2017

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL NOON PST FRIDAY...

* WHAT...Mixed precipitation occurring. The ice will result in
  difficult travel conditions, including during the morning
  commute on Friday. Additional snow accumulations of up to two
  inches north of Interstate 90 and ice accumulations of around 
  one tenth are expected.
 
* WHERE...Moses Lake, Ephrata, Othello, Quincy, Ritzville, and 
  Odessa.

* WHEN...Until noon Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$

WAZ036-290700-
/O.EXT.KOTX.WW.Y.0040.000000T0000Z-171229T2000Z/
Spokane Area-
Including the following locations Spokane, Cheney, Davenport, 
and Rockford
252 PM PST Thu Dec 28 2017

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL NOON PST FRIDAY...

* WHAT...Mixed precipitation occurring. The ice will result in
  difficult travel conditions, including during the morning
  commute on Friday. Additional snow accumulations of 1 to 3
  inches, and ice accumulations of up to a tenth are expected.

* WHERE...Spokane, Cheney, Davenport, and Rockford.

* WHEN...Until noon Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$

WAZ033-290700-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171229T1200Z/
Washington Palouse-
Including the following locations Rosalia, La Crosse, Oakesdale, 
and Tekoa
252 PM PST Thu Dec 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
FRIDAY...

* WHAT...Rain and freezing rain occurring. The ice will result in
  difficult travel conditions north and west of Colfax this
  evening possibly into the overnight hours. Ice accumulations of
  up to one tenth of an inch are expected.

* WHERE...Rosalia, La Crosse, Oakesdale, and Tekoa.

* WHEN...Until 4 AM Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$
783 
WWUS46 KOTX 290446
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
846 PM PST Thu Dec 28 2017

...Prolonged period of accumulating moderate to heavy snow
expected...

.A pair of moist Pacific storm systems will impact the region.
On such system is continuing to move through the region tonight
with another system passage tomorrow and tomorrow night. The 
Cascade crest and Idaho Panhandle will see the heaviest snow today
with more widespread snow north of I-90 and in the mountains
tomorrow. In addition parts of the Columbia Basin and vicinity 
may experience Freezing rain tonight on through early tomorrow 
morning that may result in ice accumulations of a light glaze to 
one tenth of an inch before changing to all rain later tomorrow.

WAZ042-291400-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, and Loup Loup Pass
846 PM PST Thu Dec 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Travel will be very
  difficult to impossible, including during the evening commute on
  Friday. Damage to trees and power lines is possible. Additional
  snow accumulations of 4 to 8 inches, with additional mountain
  accumulations of 1 to 2 feet near the crest are expected. Ice
  accumulations of up to 0.2 inches expected in the Plain and
  Leavenworth areas.

* WHERE...Leavenworth, Mazama, Twisp, Winthrop, Stehekin, 
  Conconully, Blewett Pass, and Loup Loup Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. Strong winds are also possible. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

&&

$$

IDZ001-004-291400-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
Northern Panhandle-Central Panhandle Mountains-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, Schweitzer Mountain Road, Kellogg, 
Pinehurst, Osburn, Wallace, Mullan, Fourth of July Pass, 
Dobson Pass, and Lookout Pass
846 PM PST Thu Dec 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Travel will be very
  difficult to impossible, including during the evening commute on
  Friday. Additional snow accumulations of 6 to 10 inches, with
  mountain accumulations up to 20 inches, and ice accumulations 
  of a light glaze are expected.

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, 
  Schweitzer Mountain Road, Kellogg, Pinehurst, Osburn, Wallace, 
  Mullan, Fourth of July Pass, Dobson Pass, and Lookout Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ002-291400-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171229T2000Z/
Coeur d'Alene Area-
Including the following locations Coeur d'Alene, Post Falls, 
Hayden, and Worley
846 PM PST Thu Dec 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST FRIDAY...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult
  travel conditions. Additional snow accumulations of 1 to 3
  inches, with localized amounts up to 4 inches and ice 
  accumulations of around one tenth are expected.

* WHERE...Coeur d'Alene, Post Falls, Hayden, and Worley.

* WHEN...Until noon Friday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ037-038-291400-
/O.CON.KOTX.WS.W.0014.171229T2000Z-171230T1800Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Deer Park, Chewelah, 
Newport, Kettle Falls, Springdale-Hunters Road, Orin-Rice Road, 
Flowery Trail Road, Republic, Inchelium, Wauconda, Chesaw Road, 
Highway 20 Wauconda Summit, Boulder Creek Road, and Sherman Pass
846 PM PST Thu Dec 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON FRIDAY TO
10 AM PST SATURDAY...

* WHAT...Heavy mixed precipitation expected. Plan on difficult
  travel conditions, including during the evening commute on
  Friday. Total snow accumulations of 4 to 8 inches, with 
  mountain accumulations up to 12 inches, and ice accumulations of
  a light glaze are expected.

* WHERE...Colville, Deer Park, Chewelah, Newport, Kettle Falls, 
  Springdale-Hunters Road, Orin-Rice Road, Flowery Trail Road, 
  Republic, Inchelium, Wauconda, Chesaw Road, Highway 20 
  Wauconda Summit, Boulder Creek Road, and Sherman Pass.

* WHEN...Noon Friday to 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are expected. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ033-291200-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171229T1200Z/
Washington Palouse-
Including the following locations Rosalia, La Crosse, Oakesdale, 
and Tekoa
846 PM PST Thu Dec 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
FRIDAY...

* WHAT...Rain and Freezing rain occurring. The ice will result in
  difficult travel conditions. Additional ice accumulations of up
  to one tenth of an inch are expected.

* WHERE...Rosalia, La Crosse, Oakesdale, and Tekoa.

* WHEN...Until 4 AM Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of freezing rain
will cause travel difficulties. Be prepared for slippery roads.
Slow down and use caution while driving. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

&&

$$

WAZ034-035-291400-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171229T2000Z/
Moses Lake Area-Upper Columbia Basin-
Including the following locations Moses Lake, Ephrata, Othello, 
Quincy, Ritzville, and Odessa
846 PM PST Thu Dec 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON PST
FRIDAY...

* WHAT...Mixed precipitation occurring. The ice will result in 
  difficult travel conditions, including during the morning 
  commute on Friday. Additional snow accumulations of up to one 
  inch and ice accumulations of around one tenth are expected.

* WHERE...Moses Lake, Ephrata, Othello, Quincy, Ritzville, and 
  Odessa.

* WHEN...Until noon Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$

WAZ036-291400-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171229T2000Z/
Spokane Area-
Including the following locations Spokane, Cheney, Davenport, 
and Rockford
846 PM PST Thu Dec 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON PST
FRIDAY...

* WHAT...Mixed precipitation occurring. The ice will result in 
  difficult travel conditions, including during the morning 
  commute on Friday. Additional snow accumulations of up to 2 
  inches, with localized amounts up to 4 inches, and ice 
  accumulations of around one tenth are expected.

* WHERE...Spokane, Cheney, Davenport, and Rockford.

* WHEN...Until noon Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$

WAZ041-044-291400-
/O.CON.KOTX.WW.Y.0040.171229T1200Z-171230T0200Z/
Wenatchee Area-Waterville Plateau-
Including the following locations Wenatchee, Chelan, Entiat, 
Cashmere, Waterville, Mansfield, and Badger Mountain Road
846 PM PST Thu Dec 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 6 PM
PST FRIDAY...

* WHAT...Mixed precipitation expected. Plan on slippery road
  conditions, including during the evening commute on Friday.
  Total snow accumulations of up to 2 inches and ice 
  accumulations of a light glaze are expected.

* WHERE...Wenatchee, Chelan, Entiat, Cashmere, Waterville, 
  Mansfield, and Badger Mountain Road.

* WHEN...4 AM to 6 PM Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$
764 
WWUS46 KOTX 291348
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
548 AM PST Fri Dec 29 2017

...Prolonged period of accumulating moderate to heavy snow
expected...

.One more Pacific storm systems will move through the region 
today and tonight. The Cascade crest, the Northern mountains,
and the Idaho Panhandle will see the heaviest snow today and
tonight. Portions of the Columbia Basin, the Washington Palouse, 
the Wenatchee area, the Waterville Plateau and the Spokane-Coeur
D'Alene areas will experience Freezing precipitation this morning
that may result in ice accumulations between one tenth and two
tenths of an inch before changing to all rain later this morning. 

WAZ042-300000-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, and Loup Loup Pass
548 AM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Travel will be very
  difficult to impossible, including during the evening commute
  today. Damage to trees and power lines is possible. Additional 
  snow accumulations of 4 to 8 inches, with additional mountain 
  accumulations of 1 to 2 feet near the crest are expected. Ice 
  accumulations of up to 0.2 inches expected in the Plain and 
  Leavenworth areas.

* WHERE...Leavenworth, Mazama, Twisp, Winthrop, Stehekin, 
  Conconully, Blewett Pass, and Loup Loup Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. Strong winds are also possible. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

&&

$$

WAZ037-038-300000-
/O.CON.KOTX.WS.W.0014.171229T2000Z-171230T1800Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Deer Park, Chewelah, 
Newport, Kettle Falls, Springdale-Hunters Road, Orin-Rice Road, 
Flowery Trail Road, Republic, Inchelium, Wauconda, Chesaw Road, 
Highway 20 Wauconda Summit, Boulder Creek Road, and Sherman Pass
548 AM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON TODAY TO
10 AM PST SATURDAY...

* WHAT...Heavy mixed precipitation expected. Plan on difficult 
  travel conditions, including during the evening commute on 
  Friday. Total snow accumulations of 4 to 8 inches, with 
  mountain accumulations up to 12 inches, and ice accumulations 
  of a light glaze are expected.

* WHERE...Colville, Deer Park, Chewelah, Newport, Kettle Falls, 
  Springdale-Hunters Road, Orin-Rice Road, Flowery Trail Road, 
  Republic, Inchelium, Wauconda, Chesaw Road, Highway 20 
  Wauconda Summit, Boulder Creek Road, and Sherman Pass.

* WHEN...Noon today to 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are expected. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ001-004-300000-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
Northern Panhandle-Central Panhandle Mountains-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, Schweitzer Mountain Road, Kellogg, 
Pinehurst, Osburn, Wallace, Mullan, Fourth of July Pass, 
Dobson Pass, and Lookout Pass
548 AM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Travel will be very
  difficult, including during the evening commute today. 
  Additional snow accumulations of 6 to 10 inches, with mountain 
  accumulations up to 20 inches, and ice accumulations of a light 
  glaze are expected.

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, 
  Schweitzer Mountain Road, Kellogg, Pinehurst, Osburn, Wallace, 
  Mullan, Fourth of July Pass, Dobson Pass, and Lookout Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ002-292000-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171229T2000Z/
Coeur d'Alene Area-
Including the following locations Coeur d'Alene, Post Falls, 
Hayden, and Worley
548 AM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST TODAY...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult 
  travel conditions. Additional snow accumulations of 1 to 3 
  inches, with localized amounts up to 4 inches and ice 
  accumulations of around one tenth are expected.

* WHERE...Coeur d'Alene, Post Falls, Hayden, and Worley.

* WHEN...Until noon today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ034-035-292000-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171229T2000Z/
Moses Lake Area-Upper Columbia Basin-
Including the following locations Moses Lake, Ephrata, Othello, 
Quincy, Ritzville, and Odessa
548 AM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON PST
TODAY...

* WHAT...Mixed precipitation occurring. The ice will result in
  difficult travel conditions, including during the morning
  commute this morning. Additional snow accumulations of up to one
  inch and ice accumulations of one tenth to two tenths are 
  expected.

* WHERE...Moses Lake, Ephrata, Othello, Quincy, Ritzville, and 
  Odessa.

* WHEN...Until noon Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$

WAZ036-292000-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171229T2000Z/
Spokane Area-
Including the following locations Spokane, Cheney, Davenport, 
and Rockford
548 AM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON PST
TODAY...

* WHAT...Mixed precipitation occurring. The ice will result in
  difficult travel conditions, including during the morning
  commute on this morning. Additional snow accumulations of 1 to 
  2 inches, with localized amounts up to 4 inches, and ice 
  accumulations of around one tenth are expected.

* WHERE...Spokane, Cheney, Davenport, and Rockford.

* WHEN...Until noon today.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$

WAZ041-044-300000-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171230T0200Z/
Wenatchee Area-Waterville Plateau-
Including the following locations Wenatchee, Chelan, Entiat, 
Cashmere, Waterville, Mansfield, and Badger Mountain Road
548 AM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST THIS
EVENING...

* WHAT...Mixed precipitation expected. Plan on slippery road
  conditions, including during the evening commute today. Total 
  snow accumulations of up to 2 inches and ice accumulations of a 
  light glaze are expected.

* WHERE...Wenatchee, Chelan, Entiat, Cashmere, Waterville, 
  Mansfield, and Badger Mountain Road.

* WHEN...4 AM to 6 PM Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$
569 
WWUS46 KOTX 291816
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
1016 AM PST Fri Dec 29 2017

...Prolonged period of accumulating moderate to heavy snow
expected Idaho Panhandle and Cascades. Freezing rain and ice for 
the Western Columbia Basin...

.Moisture will continue to spill into the region ahead of a warm
front. The Cascade crest, the Northern mountains, and the Idaho 
Panhandle will see the heaviest snow today and tonight. Portions 
of the Columbia Basin, the Washington Palouse, the Wenatchee area,
the Waterville Plateau and the Spokane-Coeur D'Alene areas will 
experience a mix of snow and freezing rain. Ice accumulations 
between one tenth and two tenths of an inch will be possible
around Moses Lake, Ephrata, Mansfield, and Othello before 
precipitation shuts off and the air mass warms above freezing.

IDZ002-300300-
/O.EXT.KOTX.WS.W.0013.000000T0000Z-171230T0300Z/
Coeur d'Alene Area-
Including the following locations Coeur d'Alene, Post Falls, 
Hayden, and Worley
1016 AM PST Fri Dec 29 2017

...WINTER STORM WARNING NOW IN EFFECT UNTIL 7 PM PST THIS
EVENING...

* WHAT...Heavy mixed precipitation occurring. Travel will be very
  difficult. Mixed precipitation this morning will transition 
  back to snow through most of the afternoon. Additional wet snow 
  accumulations of 2 to 5 inches, with localized amounts up to 7 
  inches, and ice accumulations of a light glaze are expected.

* WHERE...Coeur d'Alene, Post Falls, Hayden, and Worley.

* WHEN...Until 7 PM today.

* ADDITIONAL DETAILS...Be prepared for slick travel and significant
  reductions in visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ042-300300-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, and Loup Loup Pass
1016 AM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel
  conditions, including during the evening commute. Damage to
  trees and power lines is possible. Additional snow accumulations
  of 5 to 10 inches, with mountain accumulations up to 1 to 2 
  feet near the crest, are expected.

* WHERE...Leavenworth, Mazama, Twisp, Winthrop, Stehekin,
  Conconully, and Loup Loup Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ037-038-300300-
/O.CON.KOTX.WS.W.0014.171229T2000Z-171230T1800Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Deer Park, Chewelah, 
Newport, Kettle Falls, Springdale-Hunters Road, Orin-Rice Road, 
Flowery Trail Road, Republic, Inchelium, Wauconda, Chesaw Road, 
Highway 20 Wauconda Summit, Boulder Creek Road, and Sherman Pass
1016 AM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy snow then mixed precipitation expected. Plan on 
  difficult travel conditions, including during the evening 
  commute. Total snow accumulations of 4 to 6 inches, with 
  mountain accumulations up to 12 inches, and ice accumulations of
  a light glaze are expected.

* WHERE...Colville, Deer Park, Chewelah, Newport, Kettle Falls, 
  Springdale-Hunters Road, Orin-Rice Road, Flowery Trail Road, 
  Republic, Inchelium, Wauconda, Chesaw Road, Highway 20 
  Wauconda Summit, Boulder Creek Road, and Sherman Pass.

* WHEN...Noon today to 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are expected. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ001-004-300300-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
Northern Panhandle-Central Panhandle Mountains-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, Schweitzer Mountain Road, Kellogg, 
Pinehurst, Osburn, Wallace, Mullan, Fourth of July Pass, 
Dobson Pass, and Lookout Pass
1016 AM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel
  conditions, including during the evening commute. Additional
  snow accumulations of 7 to 11 inches, with mountain
  accumulations 1 to 2 feet, and ice accumulations of a light 
  glaze are expected.

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, 
  Schweitzer Mountain Road, Kellogg, Pinehurst, Osburn, Wallace, 
  Mullan, Fourth of July Pass, Dobson Pass, and Lookout Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ043-300300-
/O.EXB.KOTX.WW.Y.0040.000000T0000Z-171230T0300Z/
Okanogan Valley-
Including the following locations Omak, Okanogan, Brewster, 
Bridgeport, Oroville, Nespelem, and Disautel Pass
1016 AM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 PM PST THIS
EVENING...

* WHAT...Snow occurring. Plan on difficult travel conditions,
  including during the evening commute. Additional snow
  accumulations of 2 to 4 inches are expected. Breezy north winds
  will result in localized blowing snow. 

* WHERE...Omak, Okanogan, Brewster, Bridgeport, Oroville, 
  Nespelem, and Disautel Pass.

* WHEN...Until 7 PM today.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WAZ034-035-041-044-300300-
/O.EXT.KOTX.WW.Y.0040.000000T0000Z-171230T0300Z/
Moses Lake Area-Upper Columbia Basin-Wenatchee Area-
Waterville Plateau-
Including the following locations Moses Lake, Ephrata, Othello, 
Quincy, Ritzville, Grand Coulee, Odessa, Wilbur, Coulee City, 
Wenatchee, Chelan, Entiat, Cashmere, Waterville, Mansfield, 
and Badger Mountain Road
1016 AM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 7 PM PST THIS
EVENING...

* WHAT...Mixed precipitation occurring. The ice will result in
  treacherous travel conditions. Additional wet snow accumulations
  of up to 2 inches, with localized amounts up to 5 inches, and 
  additional ice accumulations of around one tenth are expected.

* WHERE...Moses Lake, Ephrata, Othello, Quincy, Ritzville, Grand 
  Coulee, Odessa, Wilbur, Coulee City, Wenatchee, Chelan, Entiat,
   Cashmere, Waterville, Mansfield, and Badger Mountain Road.

* WHEN...Until 7 PM today.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$

WAZ036-300300-
/O.EXT.KOTX.WW.Y.0040.000000T0000Z-171230T0300Z/
Spokane Area-
Including the following locations Spokane, Cheney, Davenport, 
and Rockford
1016 AM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 7 PM PST THIS
EVENING...

* WHAT...Mixed precipitation occurring. Plan on slippery road
  conditions, including during the evening commute. Precipitation
  to transition back to snow along Interstate 90 and points north.
  A mix of wet snow and rain south of Interstate 90. Additional 
  wet snow accumulations of 1 to 3 inches, with localized amounts 
  up to 5 inches, and ice accumulations of a light glaze are 
  expected.

* WHERE...Spokane, Cheney, Davenport, and Rockford.

* WHEN...Until 7 PM today.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$
395 
WWUS46 KOTX 300122
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
522 PM PST Fri Dec 29 2017

.The last of three wather systems continues to bring a wintry
mixture of precipitation to Eastern Washington and Northern Idaho. 
Ice accumulations between one tenth and two tenths of an inch 
will be possible around Moses Lake, Ephrata, Mansfield, and 
Othello and over to the Spokane and Deer Park area before 
precipitation shuts off and the air mass warms above freezing.

WAZ042-300930-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, and Loup Loup Pass
522 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions, including during the evening commute. Damage to 
  trees and power lines is possible. Additional snow 
  accumulations of 4 to 7 inches, with mountain accumulations up 
  to 18 inches, are expected.

* WHERE...Leavenworth, Mazama, Twisp, Winthrop, Stehekin, 
  Conconully, Blewett Pass, and Loup Loup Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ037-038-300930-
/O.CON.KOTX.WS.W.0014.000000T0000Z-171230T1800Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Deer Park, Chewelah, 
Newport, Kettle Falls, Springdale-Hunters Road, Orin-Rice Road, 
Flowery Trail Road, Republic, Inchelium, Wauconda, Chesaw Road, 
Highway 20 Wauconda Summit, Boulder Creek Road, and Sherman Pass
522 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult 
  travel conditions, including during the evening commute. 
  Additional snow accumulations of 2 to 4 inches, with mountain 
  accumulations up to 10 inches, and ice accumulations of around 
  one tenth are expected.

* WHERE...Colville, Deer Park, Chewelah, Newport, Kettle Falls, 
  Springdale-Hunters Road, Orin-Rice Road, Flowery Trail Road, 
  Republic, Inchelium, Wauconda, Chesaw Road, Highway 20 
  Wauconda Summit, Boulder Creek Road, and Sherman Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ001-004-300930-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
Northern Panhandle-Central Panhandle Mountains-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, Schweitzer Mountain Road, Kellogg, 
Pinehurst, Osburn, Wallace, Mullan, Fourth of July Pass, 
Dobson Pass, and Lookout Pass
522 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult 
  travel conditions, including during the evening commute. 
  Additional snow accumulations of 5 to 8 inches, with mountain 
  accumulations up to 20 inches, and ice accumulations of a 
  light glaze to one tenth of an inch are expected.

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, 
  Schweitzer Mountain Road, Kellogg, Pinehurst, Osburn, Wallace, 
  Mullan, Fourth of July Pass, Dobson Pass, and Lookout Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ002-300300-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T0300Z/
Coeur d'Alene Area-
Including the following locations Coeur d'Alene, Post Falls, 
Hayden, and Worley
522 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 PM PST THIS
EVENING...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult 
  travel conditions, including during the evening commute. 
  Additional wet snow accumulations of 1 to 3 inches and ice 
  accumulations of around one tenth are expected.

* WHERE...Coeur d'Alene, Post Falls, Hayden, and Worley.

* WHEN...Until 7 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ034-035-041-043-044-300300-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171230T0300Z/
Moses Lake Area-Upper Columbia Basin-Wenatchee Area-
Okanogan Valley-Waterville Plateau-
Including the following locations Moses Lake, Ephrata, Othello, 
Quincy, Ritzville, Grand Coulee, Odessa, Wilbur, Coulee City, 
Wenatchee, Chelan, Entiat, Cashmere, Omak, Okanogan, Brewster, 
Bridgeport, Oroville, Nespelem, Disautel Pass, Waterville, 
Mansfield, and Badger Mountain Road
522 PM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM PST THIS
EVENING...

* WHAT...Mixed precipitation occurring. The ice will result in 
  difficult travel conditions, including during the evening 
  commute. Additional snow accumulations of up to one inch and 
  ice accumulations of around one tenth are expected.

* WHERE...Moses Lake, Ephrata, Othello, Quincy, Ritzville, Grand 
  Coulee, Odessa, Wilbur, Coulee City, Wenatchee, Chelan, Entiat,
   Cashmere, Omak, Okanogan, Brewster, Bridgeport, Oroville, 
  Nespelem, Disautel Pass, Waterville, Mansfield, and Badger 
  Mountain Road.

* WHEN...Until 7 PM today.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$

WAZ036-300300-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171230T0300Z/
Spokane Area-
Including the following locations Spokane, Cheney, Davenport, 
and Rockford
522 PM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM PST THIS
EVENING...

* WHAT...Mixed precipitation occurring. The ice will result in 
  difficult travel conditions, including during the evening 
  commute. Additional wet snow accumulations of up to two inches 
  and ice accumulations of up to one tenth of an inch are 
  expected.

* WHERE...Spokane, Cheney, Davenport, and Rockford.

* WHEN...Until 7 PM today.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$
319 
WWUS46 KOTX 300215
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
615 PM PST Fri Dec 29 2017

.The last of three wather systems continues to bring a wintry
mixture of precipitation to Eastern Washington and Northern
Idaho. Ice accumulations between one tenth and two tenths of an
inch will be possible around Moses Lake, Ephrata, Mansfield, and
Othello and over to the Spokane and Deer Park area before
precipitation shuts off and the air mass warms above freezing.

IDZ002-300700-
/O.EXT.KOTX.WS.W.0013.000000T0000Z-171230T0700Z/
Coeur d'Alene Area-
Including the following locations Coeur d'Alene, Post Falls, 
Hayden, and Worley
615 PM PST Fri Dec 29 2017

...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM PST THIS
EVENING...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult 
  travel conditions, including during the evening commute. 
  Additional wet snow accumulations of 1 to 3 inches and ice 
  accumulations of around one tenth are expected.

* WHERE...Coeur d'Alene, Post Falls, Hayden, and Worley.

* WHEN...Until 11 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ042-301015-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, and Loup Loup Pass
615 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions, including during the evening commute. Damage to 
  trees and power lines is possible. Additional snow 
  accumulations of 4 to 7 inches, with mountain accumulations up 
  to 17 inches, are expected.

* WHERE...Leavenworth, Mazama, Twisp, Winthrop, Stehekin, 
  Conconully, Blewett Pass, and Loup Loup Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ037-038-301015-
/O.CON.KOTX.WS.W.0014.000000T0000Z-171230T1800Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Deer Park, Chewelah, 
Newport, Kettle Falls, Springdale-Hunters Road, Orin-Rice Road, 
Flowery Trail Road, Republic, Inchelium, Wauconda, Chesaw Road, 
Highway 20 Wauconda Summit, Boulder Creek Road, and Sherman Pass
615 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult 
  travel conditions, including during the evening commute. 
  Additional snow accumulations of 2 to 4 inches, with mountain 
  accumulations up to 9 inches, and ice accumulations of around 
  one tenth are expected.

* WHERE...Colville, Deer Park, Chewelah, Newport, Kettle Falls, 
  Springdale-Hunters Road, Orin-Rice Road, Flowery Trail Road, 
  Republic, Inchelium, Wauconda, Chesaw Road, Highway 20 
  Wauconda Summit, Boulder Creek Road, and Sherman Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ001-004-301015-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
Northern Panhandle-Central Panhandle Mountains-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, Schweitzer Mountain Road, Kellogg, 
Pinehurst, Osburn, Wallace, Mullan, Fourth of July Pass, 
Dobson Pass, and Lookout Pass
615 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult 
  travel conditions, including during the evening commute. 
  Additional snow accumulations of 5 to 8 inches, with mountain 
  accumulations up to 18 inches, and ice accumulations of a 
  light glaze are expected.

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, 
  Schweitzer Mountain Road, Kellogg, Pinehurst, Osburn, Wallace, 
  Mullan, Fourth of July Pass, Dobson Pass, and Lookout Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ036-300700-
/O.EXT.KOTX.WW.Y.0040.000000T0000Z-171230T0700Z/
Spokane Area-
Including the following locations Spokane, Cheney, Davenport, 
and Rockford
615 PM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM PST THIS
EVENING...

* WHAT...Mixed precipitation occurring. The ice will result in 
  difficult travel conditions, including during the evening 
  commute. Additional wet snow accumulations of up to two inches 
  and ice accumulations of up to one tenth of an inch are 
  expected.

* WHERE...Spokane, Cheney, Davenport, and Rockford.

* WHEN...Until 11 PM today.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$

WAZ034-035-041-043-044-300315-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171230T0300Z/
Moses Lake Area-Upper Columbia Basin-Wenatchee Area-
Okanogan Valley-Waterville Plateau-
Including the following locations Moses Lake, Ephrata, Othello, 
Quincy, Ritzville, Grand Coulee, Odessa, Wilbur, Coulee City, 
Wenatchee, Chelan, Entiat, Cashmere, Omak, Okanogan, Brewster, 
Bridgeport, Oroville, Nespelem, Disautel Pass, Waterville, 
Mansfield, and Badger Mountain Road
615 PM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM PST THIS
EVENING...

* WHAT...Mixed precipitation occurring. The ice will result in 
  difficult travel conditions, including during the evening 
  commute. Additional snow accumulations of up to one inch and 
  ice accumulations of around one tenth are expected.

* WHERE...Moses Lake, Ephrata, Othello, Quincy, Ritzville, Grand 
  Coulee, Odessa, Wilbur, Coulee City, Wenatchee, Chelan, Entiat,
   Cashmere, Omak, Okanogan, Brewster, Bridgeport, Oroville, 
  Nespelem, Disautel Pass, Waterville, Mansfield, and Badger 
  Mountain Road.

* WHEN...Until 7 PM today.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$
217 
WWUS46 KOTX 300309
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
709 PM PST Fri Dec 29 2017

.The last of three wather systems continues to bring a wintry
mixture of precipitation to Eastern Washington and Northern
Idaho. Ice accumulations between one tenth and two tenths of an
inch will be possible around Moses Lake, Ephrata, Mansfield, and
Othello and over to the Spokane and Deer Park area before
precipitation shuts off and the air mass warms above freezing.

WAZ034-035-041-043-044-300415-
/O.EXP.KOTX.WW.Y.0040.000000T0000Z-171230T0300Z/
Moses Lake Area-Upper Columbia Basin-Wenatchee Area-
Okanogan Valley-Waterville Plateau-
Including the following locations Moses Lake, Ephrata, Othello, 
Quincy, Ritzville, Grand Coulee, Odessa, Wilbur, Coulee City, 
Wenatchee, Chelan, Entiat, Cashmere, Omak, Okanogan, Brewster, 
Bridgeport, Oroville, Nespelem, Disautel Pass, Waterville, 
Mansfield, and Badger Mountain Road
709 PM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY HAS EXPIRED...

The wintry mix of sleet, snow, and freezing rain has decreased
substantially in intensity, therefore the winter weather advisory
has been allowed to expire. 

$$

WAZ042-301115-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, and Loup Loup Pass
709 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions. Damage to trees and power lines is possible. 
  Additional snow accumulations of 4 to 7 inches, with mountain 
  accumulations up to 17 inches, are expected.

* WHERE...Leavenworth, Mazama, Twisp, Winthrop, Stehekin, 
  Conconully, Blewett Pass, and Loup Loup Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ037-038-301115-
/O.CON.KOTX.WS.W.0014.000000T0000Z-171230T1800Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Deer Park, Chewelah, 
Newport, Kettle Falls, Springdale-Hunters Road, Orin-Rice Road, 
Flowery Trail Road, Republic, Inchelium, Wauconda, Chesaw Road, 
Highway 20 Wauconda Summit, Boulder Creek Road, and Sherman Pass
709 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult
  travel conditions. Additional snow accumulations of 2 to 4
  inches, with mountain accumulations up to 8 inches, and ice
  accumulations of around two tenth are expected.

* WHERE...Colville, Deer Park, Chewelah, Newport, Kettle Falls, 
  Springdale-Hunters Road, Orin-Rice Road, Flowery Trail Road, 
  Republic, Inchelium, Wauconda, Chesaw Road, Highway 20 
  Wauconda Summit, Boulder Creek Road, and Sherman Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ001-004-301115-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
Northern Panhandle-Central Panhandle Mountains-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, Schweitzer Mountain Road, Kellogg, 
Pinehurst, Osburn, Wallace, Mullan, Fourth of July Pass, 
Dobson Pass, and Lookout Pass
709 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult 
  travel conditions. Additional snow accumulations of 5 to 8 
  inches, with mountain accumulations up to 17 inches, and ice 
  accumulations of a light glaze are expected.

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, 
  Schweitzer Mountain Road, Kellogg, Pinehurst, Osburn, Wallace, 
  Mullan, Fourth of July Pass, Dobson Pass, and Lookout Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ002-300700-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T0700Z/
Coeur d'Alene Area-
Including the following locations Coeur d'Alene, Post Falls, 
Hayden, and Worley
709 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM PST THIS
EVENING...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult
  travel conditions. Additional wet snow accumulations of 1 to 3
  inches and ice accumulations of around two tenth are expected.

* WHERE...Coeur d'Alene, Post Falls, Hayden, and Worley.

* WHEN...Until 11 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ036-300700-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171230T0700Z/
Spokane Area-
Including the following locations Spokane, Cheney, Davenport, 
and Rockford
709 PM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM PST THIS
EVENING...

* WHAT...Mixed precipitation occurring. The ice will result in 
  difficult travel conditions. Additional wet snow accumulations 
  of up to two inches and ice accumulations of up to two tenths 
  of an inch are expected.

* WHERE...Spokane, Cheney, Davenport, and Rockford.

* WHEN...Until 11 PM today.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$
904 
WWUS46 KOTX 300423
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
823 PM PST Fri Dec 29 2017


WAZ042-301230-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, and Loup Loup Pass
823 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions. Damage to trees and power lines is possible. 
  Additional snow accumulations of 4 to 7 inches, with mountain 
  accumulations up to 17 inches, are expected.

* WHERE...Leavenworth, Mazama, Twisp, Winthrop, Stehekin, 
  Conconully, Blewett Pass, and Loup Loup Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ037-038-301230-
/O.CON.KOTX.WS.W.0014.000000T0000Z-171230T1800Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Deer Park, Chewelah, 
Newport, Kettle Falls, Springdale-Hunters Road, Orin-Rice Road, 
Flowery Trail Road, Republic, Inchelium, Wauconda, Chesaw Road, 
Highway 20 Wauconda Summit, Boulder Creek Road, and Sherman Pass
823 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult 
  travel conditions. Additional snow accumulations of 2 to 4 
  inches, with mountain accumulations up to 8 inches, and ice 
  accumulations of around two tenth are expected.

* WHERE...Colville, Deer Park, Chewelah, Newport, Kettle Falls, 
  Springdale-Hunters Road, Orin-Rice Road, Flowery Trail Road, 
  Republic, Inchelium, Wauconda, Chesaw Road, Highway 20 
  Wauconda Summit, Boulder Creek Road, and Sherman Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ001-004-301230-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
Northern Panhandle-Central Panhandle Mountains-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, Schweitzer Mountain Road, Kellogg, 
Pinehurst, Osburn, Wallace, Mullan, Fourth of July Pass, 
Dobson Pass, and Lookout Pass
823 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult
  travel conditions. Additional snow accumulations of 5 to 8
  inches, with mountain accumulations up to 17 inches. Ice
  accumulations of around two tenth of an inch are expected with
  very localized higher accumulations near one half inch south of
  Sandpoint and north of Post Falls. 

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, 
  Schweitzer Mountain Road, Kellogg, Pinehurst, Osburn, Wallace, 
  Mullan, Fourth of July Pass, Dobson Pass, and Lookout Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ002-300700-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T0700Z/
Coeur d'Alene Area-
Including the following locations Coeur d'Alene, Post Falls, 
Hayden, and Worley
823 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM PST THIS
EVENING...

* WHAT...Heavy mixed precipitation occurring. Plan on difficult
  travel conditions. Additional wet snow accumulations of 1 to 3
  inches and ice accumulations between two tenth and one half inch
  are expected.

* WHERE...Coeur d'Alene, Post Falls, Hayden, and Worley.

* WHEN...Until 11 PM today.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are occurring. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ036-300700-
/O.CON.KOTX.WW.Y.0040.000000T0000Z-171230T0700Z/
Spokane Area-
Including the following locations Spokane, Cheney, Davenport, 
and Rockford
823 PM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM PST THIS
EVENING...

* WHAT...Mixed precipitation occurring. The ice will result in 
  difficult travel conditions. Additional wet snow accumulations 
  of up to two inches and ice accumulations of up to two tenths 
  of an inch are expected.

* WHERE...Spokane, Cheney, Davenport, and Rockford.

* WHEN...Until 11 PM today.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$
404 
WWUS46 KOTX 300651
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
1051 PM PST Fri Dec 29 2017


IDZ002-300800-
/O.EXP.KOTX.WS.W.0013.000000T0000Z-171230T0700Z/
Coeur d'Alene Area-
Including the following locations Coeur d'Alene, Post Falls, 
Hayden, and Worley
1051 PM PST Fri Dec 29 2017

...WINTER STORM WARNING WILL EXPIRE AT 11 PM PST THIS EVENING...

The wintry mix of sleet, snow, and freezing rain has decreased
substantially in intensity and/or ended with with some light 
freezing drizzle lingering in its place. With no significant 
additional ice accumulations expected from the remaining light 
freezing drizzle the winter storm warning has been allowed to 
expire. 


$$

WAZ036-300800-
/O.EXP.KOTX.WW.Y.0040.000000T0000Z-171230T0700Z/
Spokane Area-
Including the following locations Spokane, Cheney, Davenport, 
and Rockford
1051 PM PST Fri Dec 29 2017

...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM PST THIS
EVENING...

The wintry mix of sleet, snow, and freezing rain has decreased
substantially in intensity and/or ended with with some light 
freezing drizzle lingering in its place. With no significant 
additional ice accumulations expected from the remaining light 
freezing drizzle the winter storm warning has been allowed to 
expire. 


$$

WAZ042-301500-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, and Loup Loup Pass
1051 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel 
  conditions. Damage to trees and power lines is possible. 
  Additional snow accumulations of 2 to 4 inches, with mountain 
  accumulations up to 13 inches, are expected.

* WHERE...Leavenworth, Mazama, Twisp, Winthrop, Stehekin, 
  Conconully, Blewett Pass, and Loup Loup Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

WAZ037-038-301500-
/O.CON.KOTX.WS.W.0014.000000T0000Z-171230T1800Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Deer Park, Chewelah, 
Newport, Kettle Falls, Springdale-Hunters Road, Orin-Rice Road, 
Flowery Trail Road, Republic, Inchelium, Wauconda, Chesaw Road, 
Highway 20 Wauconda Summit, Boulder Creek Road, and Sherman Pass
1051 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel
  conditions. Additional snow accumulations of up to two inches,
  with mountain accumulations up to 6 inches, are expected.
  Locations to the south that may have freezing rain and drizzle
  resulting in less than one tenth of an inch of additional ice
  accumulation.

* WHERE...Colville, Deer Park, Chewelah, Newport, Kettle Falls, 
  Springdale-Hunters Road, Orin-Rice Road, Flowery Trail Road, 
  Republic, Inchelium, Wauconda, Chesaw Road, Highway 20 
  Wauconda Summit, Boulder Creek Road, and Sherman Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ001-004-301500-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
Northern Panhandle-Central Panhandle Mountains-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, Schweitzer Mountain Road, Kellogg, 
Pinehurst, Osburn, Wallace, Mullan, Fourth of July Pass, 
Dobson Pass, and Lookout Pass
1051 PM PST Fri Dec 29 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* WHAT...Heavy snow occurring. Plan on difficult travel
  conditions. Additional snow accumulations of 2 to 4 inches, with
  mountain accumulations up to 13 inches, are expected. Locations
  south of Sandpoint and north of Post Falls experiencing freezing
  rain or drizzle may have an one tenth of an inch of ice
  accumulation in addition to the near one half inch of ice
  accumulation which has already occurred tonight. Damage to trees
  and power lines is possible due to the ice accumulation.

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, 
  Schweitzer Mountain Road, Kellogg, Pinehurst, Osburn, Wallace, 
  Mullan, Fourth of July Pass, Dobson Pass, and Lookout Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$
204 
WWUS46 KOTX 301101
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
301 AM PST Sat Dec 30 2017


WAZ037-038-301215-
/O.CAN.KOTX.WS.W.0014.000000T0000Z-171230T1800Z/
Northeast Mountains-Okanogan Highlands-
301 AM PST Sat Dec 30 2017

...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in Spokane has cancelled the Winter
Storm Warning.

The storm that brought snow, and pockets of freezing rain has 
moved out of the region. While some light snow is possible 
through the day additional accumulations are expected to be light.
There fore the winter storm warning has been cancelled.

$$

WAZ042-301800-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, and Loup Loup Pass
301 AM PST Sat Dec 30 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* WHAT...Moderate snow occurring. Plan on difficult travel 
  conditions. Damage to trees and power lines is possible. 
  Additional snow accumulations of 1 to 3 inches, with mountain 
  accumulations 5 to 10 inches, are expected.

* WHERE...Leavenworth, Mazama, Twisp, Winthrop, Stehekin, 
  Conconully, Blewett Pass, and Loup Loup Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

IDZ001-004-301800-
/O.CON.KOTX.WS.W.0013.000000T0000Z-171230T1800Z/
Northern Panhandle-Central Panhandle Mountains-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, Schweitzer Mountain Road, Kellogg, 
Pinehurst, Osburn, Wallace, Mullan, Fourth of July Pass, 
Dobson Pass, and Lookout Pass
301 AM PST Sat Dec 30 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* WHAT...Moderate occurring. Plan on difficult travel conditions.
  Additional snow accumulations of 1 to 3 inches, with mountain
  accumulations 5 to 7 inches, can be expected. 

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, 
  Schweitzer Mountain Road, Kellogg, Pinehurst, Osburn, Wallace, 
  Mullan, Fourth of July Pass, Dobson Pass, and Lookout Pass.

* WHEN...Until 10 AM Saturday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Spokane, WA wrote its last area forecast discussion before this winter storm warning went out at Dec 28, 4:36 AM PST, 4 hours 57 minutes earlier.

Area forecast discussion, Dec 28, 4:36 AM PST, 4 hours 57 minutes before
Area Forecast Discussion
National Weather Service Spokane WA
436 AM PST Thu Dec 28 2017

.SYNOPSIS...
A series of weather systems are expected today through Friday
night. Heavy snow is expected for the northern valleys and
mountains as well as a wintry mix of precipitation for the
Columbia Basin, Palouse into the Spokane area. High pressure will
arrive by the weekend and early next week which will deliver a
drier and colder weather pattern for the start of the new year.

&&

.DISCUSSION...
Thursday and Thursday Night...
Taking a look at the big picture first we see a large area of low
pressure positioned near the Gulf of Alaska. The trough axis
extends south along the 140W meridian. To the east off of the
California coastline is a low amplitude ridge of high pressure.
Between these two features is the jet stream ushering a
substantial plume of moisture toward the BC and PacNW coast. A
series of waves will move along this jet stream tapping into the
abundant Pacific moisture resulting in widespread rain and snow
for the Inland Northwest.

The first 24 hours will be an active period with the first
significant plume of moisture arriving. Radar echoes have already
begun to increase over eastern WA and north Idaho. Expect this
trend to continue with widespread snow expected near the Cascade
crest, eastern WA, and north ID. Westerly flow aloft will result
in downsloping in the lee of the Cascades keeping much of the
Columbia Basin and Okanogan Valley relatively dry today.

The forecast trend for this first event has been to reduce the
amount of snow...especially along the I-90 corridor. The morning
update continues that trend with slightly less snow expected
during the day today. Another region that is expecting less snow
today is the Okanogan Highlands up through Republic. Currently a
Winter Storm Warning is in effect but not expecting the majority
of impacts to occur until Friday with the next, and more
significant slug of moisture. Over the next few hours will be
making decisions on how to best handle current warnings and
determine if trimming any back is necessary. For most of the
mountains the more significant impacts will be Friday so we may
need to tweak our messaging.

Another change to the forecast is the arrival of warmer air in
the lower levels overnight Thursday night going into Friday
morning. There is a small chance of freezing rain as we make the
transition to all rain or a rain/snow mix for the lower Columbia
Basin. Places like Pullman and eventually the lower elevations of
Spokane will change over to rain by late Thursday night. This
again would limit snowfall totals for this entire event. Given the
rain/snow line is so close to the I90 corridor, I leaned slightly
to the colder side of things and kept snow in the forecast for
the higher elevations like the west plains, south hill, etc. Stay
tuned as we get closer and we dial in on exactly where that
rain/snow or freezing rain line sets up Friday. /AB

Friday through Saturday Night: The second, stronger storm will
move into the region Friday and Friday night. The precipitable
water fetch off the Pacific will increase friday over eastern WA
and north ID before sagging south Fri night. Very complicated
forecast as the track of the low will determine how far north the
warm air will reach. Have not made big changes to the forecast.
Across northern WA and ID the precip will remain all snow with
perhaps the southern portions of Ferry, Stevens, Pend Oreille and
Bonner counties seeing some freezing rain overnight Friday night
into Saturday. Heavy snow is expected across extreme NE WA and
northern ID as well as the Cascade crest. The freezing rain threat
will start Friday morning across the Columbia Basin and extend
east into Spokane and the northern reaches of the Palouse. Ice
accumulations should be light, under a tenth of an inch. But
confidence in this is low, and there could be pockets of higher
ice accumulations. Then Friday evening the freezing rain threat
will spread east into Idaho. The Friday evening commute will be
difficult and slow to say the least. If you can, stay off the
roads. Meanwhile further south, such as the Palouse they will see
heavy rain with rises on area rivers and streams likely. Bankfull
conditions are expected.

Sunday through Thursday: Weak energy will continue to slide
through the northwest flow on Sunday as an upper level ridge
builds along the west coast. There could be some light snow
showers as a result. Models are showing drier air moving in, so
the showers would be confined to the ID Panhandle. Then next week
the ridge in some shape or form will be across the Pacific
Northwest. Models differ a bit on where the axis sets up. The
question becomes whether we will have to deal with low clouds or
fog under this ridge pattern. Currently have periods of clouds in
the forecast, but am not going with a widespread low cloud or fog
event. There may be patchy fog late at night or early in the
morning, but do not think it will be widespread and it should burn
off through the day. The latest GFS shows a cutoff low moving
under the ridge Tue/Wed, but this is not supported by the other
models. A dry forecast is expected for the new year. Temperatures
will be several degrees below average for this time of the year.
/Nisbet

&&

.AVIATION...
12Z TAFS: The next 24 to 48 hours will offer a variety of weather
conditions across the Inland Northwest. First, widespread snow is
expected today with the exception of the immediate lee of the
Cascades where downsloping winds should keep KEAT mostly precip
free. Snow will increase this morning elsewhere and possibly mix
with rain or freezing rain for the lower Columbia Basin including
KMWH. The rain/snow line will edge north during the day...first
impacting KLWS and then moving through KPUW and stalling around
the I-90 corridor from KGEG-KSFF-KCOE. That line will continue
through Friday so precip type is very uncertain at this
point...particularly for those 3 TAF locations. Precipitation
Friday will be intense for most locations. Otherwise, expect MVFR
to IFR ceilings to prevail through the next 24-36 hours. Precip
chances will diminish this weekend. /AB

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        30  29  34  27  33  19 /  90  90 100 100  30  10
Coeur d'Alene  30  30  34  27  33  20 /  90 100 100 100  60  10
Pullman        34  33  38  32  36  24 /  80  90 100 100  40  10
Lewiston       39  36  43  37  42  27 /  70  90  90  90  20  10
Colville       27  24  30  25  30  15 /  70  70  70  90  60  10
Sandpoint      28  27  30  22  28  17 / 100 100  90 100  90  10
Kellogg        32  30  31  26  29  21 / 100 100 100 100  90  20
Moses Lake     28  28  34  28  39  21 /  60  50  90  90  10   0
Wenatchee      27  25  32  28  37  22 /  60  50  80  80  10   0
Omak           25  24  31  25  32  17 /  50  40  70  80  30  10

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...Winter Weather Advisory until 10 AM PST this morning for Lewis
     and Southern Nez Perce Counties-Lewiston Area.

     Winter Storm Warning until 4 AM PST Friday for Coeur d'Alene
     Area-Idaho Palouse.

     Winter Storm Warning until 10 AM PST Saturday for Central
     Panhandle Mountains-Northern Panhandle.

WA...Winter Storm Warning until 10 AM PST Saturday for Northeast
     Mountains-Okanogan Highlands.

     Winter Weather Advisory until 4 AM PST Friday for Spokane Area-
     Washington Palouse.

     Winter Weather Advisory from 4 PM this afternoon to 4 AM PST
     Friday for Moses Lake Area-Upper Columbia Basin.

     Winter Storm Warning until 10 AM PST Saturday for East Slopes
     Northern Cascades.

&&
Hazardous weather outlook, Dec 28, 9:33 AM PST, 0 minutes before
Hazardous Weather Outlook
National Weather Service Spokane WA
933 AM PST Thu Dec 28 2017

IDZ001>004-026-027-WAZ031>038-041>044-291745-
Northern Panhandle-Coeur d'Alene Area-Idaho Palouse-
Central Panhandle Mountains-Lewiston Area-
Lewis and Southern Nez Perce Counties-Northeast Blue Mountains-
Lower Garfield and Asotin Counties-Washington Palouse-
Moses Lake Area-Upper Columbia Basin-Spokane Area-
Northeast Mountains-Okanogan Highlands-Wenatchee Area-
East Slopes Northern Cascades-Okanogan Valley-Waterville Plateau-
933 AM PST Thu Dec 28 2017

This Hazardous Weather Outlook is for portions of North Idaho...
North Central Idaho...Central Washington...East Central
Washington...North Central Washington...Northeast Washington and
Southeast Washington.

.DAY ONE...TODAY AND TONIGHT

A Pacific storm will bring snow to the Idaho Panhandle today and
tonight, with light freezing rain possible in the Columbia Basin.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A second more intense storm will impact the region Friday. This
storm will bring the potential for heavy snow to locations north
of Interstate 90, with mainly rain south of I-90. Freezing rain is
also possible in the Columbia Basin.

Nearby

Winter Storm Warnings in Washington, 2017Every winter storm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.