Alert archive / Washington / Wind Chill Advisories in 2020

Wind Chill Advisory 2, NWS Spokane, WA

January 14, 2020Douglas County, Okanogan County, Washington

NWS Spokane, WA issued this wind chill advisory at Jan 14, 2020, 2:47 PM PST for Douglas County, Okanogan County, Washington. It took effect at Jan 14, 2020, 7:00 PM PST. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Jan 14, 2020, 2:47 PM PST (22:47 UTC)
In effect from
Jan 14, 2020, 7:00 PM PST
Expired
Jan 15, 2020, 10:00 AM PST
In force
15 hr
Issued by
NWS Spokane, WA

Counties Douglas County, WA, Okanogan County, WA

The radar

The Spokane radar (KOTX), 164 km from the middle of the area, began a volume at 22:52 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.

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 10.8 hours before the alert went out and 252 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 2020-01-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2020-01-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
592 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

852 
WWUS46 KOTX 142247
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
247 PM PST Tue Jan 14 2020


WAZ043-150700-
/O.NEW.KOTX.WC.Y.0002.200115T0300Z-200115T1800Z/
Okanogan Valley-
Including the following locations Omak, Okanogan, Brewster, 
Bridgeport, Oroville, Nespelem, and Disautel Pass
247 PM PST Tue Jan 14 2020

...WIND CHILL ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 10 AM
PST WEDNESDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  15 below zero.

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

* WHEN...From 7 PM this evening to 10 AM PST Wednesday.

* IMPACTS...The cold wind chills could result in hypothermia if 
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$

WAZ042-150700-
/O.EXB.KOTX.WW.Y.0007.200115T0000Z-200115T1500Z/
East Slopes Northern Cascades-
Including the following locations Mazama, Stehekin, Plain, 
and Holden Village
247 PM PST Tue Jan 14 2020

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 AM PST WEDNESDAY FOR
THE CASCADE CREST INCLUDING HIGHWAY 2 BETWEEN COLES CORNER AND
STEVENS PASS...

* WHAT...Snow expected for The Cascade Crest including Highway 2 
  between Coles Corner and Stevens Pass. Total snow 
  accumulations of 4 to 9 inches, with local amounts to 12 in 
  the higher elevation.

* WHERE...Mazama, Stehekin, Plain, and Holden Village.

* WHEN...Until 7 AM PST Wednesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IDZ002-003-026-027-WAZ031>033-150300-
/O.EXT.KOTX.WW.Y.0007.000000T0000Z-200115T0300Z/
Coeur d'Alene Area-Idaho Palouse-Lewiston Area-
Lewis and Southern Nez Perce Counties-Northeast Blue Mountains-
Lower Garfield and Asotin Counties-Washington Palouse-
Including the following locations Coeur d'Alene, Post Falls, 
Hayden, Worley, Moscow, Plummer, Potlatch, Genesee, Lewiston, 
Lapwai, Peck, Culdesac, Gifford, Lewiston Grade, Kamiah, 
Craigmont, Nezperce, Winchester, Soldiers Meadow Road, Anatone, 
Peola, Mountain Road, Cloverland Road, Clarkston, Pomeroy, 
Pullman, Colfax, Rosalia, La Crosse, Oakesdale, Tekoa, 
and Uniontown
247 PM PST Tue Jan 14 2020

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

* WHAT...Snow expected. Additional snow accumulations today of 1/2 
  to 2 inches.

* WHERE...Kellogg, Pinehurst, Osburn, Wallace, Mullan, Fourth of 
  July Pass, Dobson Pass, Lookout Pass, Lewiston, Lapwai, Peck, 
  Culdesac, Gifford, Lewiston Grade, Kamiah, Craigmont, 
  Nezperce, Winchester, Soldiers Meadow Road, Anatone, Peola, 
  Mountain Road, and Cloverland Road.

* WHEN...Until 7 PM PST this evening.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IDZ004-150700-
/O.EXT.KOTX.WW.Y.0007.000000T0000Z-200115T0700Z/
Central Panhandle Mountains-
Including the following locations Kellogg, Pinehurst, Osburn, 
Wallace, Mullan, Fourth of July Pass, Dobson Pass, 
and Lookout Pass
247 PM PST Tue Jan 14 2020

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

* WHAT...Snow expected. Additional snow accumulations today of 1 
  to 3 inches.

* WHERE...Kellogg, Pinehurst, Osburn, Wallace, Mullan, Fourth of 
  July Pass, Dobson Pass, Lookout Pass, Lewiston, Lapwai, Peck, 
  Culdesac, Gifford, Lewiston Grade, Kamiah, Craigmont, 
  Nezperce, Winchester, Soldiers Meadow Road, Anatone, Peola, 
  Mountain Road, and Cloverland Road.

* WHEN...Until 11 PM PST this evening.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
4 follow-up statements
688 
WWUS46 KOTX 150255
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
655 PM PST Tue Jan 14 2020


IDZ002-003-026-027-WAZ031>033-150400-
/O.EXP.KOTX.WW.Y.0007.000000T0000Z-200115T0300Z/
Coeur d'Alene Area-Idaho Palouse-Lewiston Area-
Lewis and Southern Nez Perce Counties-Northeast Blue Mountains-
Lower Garfield and Asotin Counties-Washington Palouse-
Including the following locations Coeur d'Alene, Post Falls, 
Hayden, Worley, Moscow, Plummer, Potlatch, Genesee, Lewiston, 
Lapwai, Peck, Culdesac, Gifford, Lewiston Grade, Kamiah, 
Craigmont, Nezperce, Winchester, Soldiers Meadow Road, Anatone, 
Peola, Mountain Road, Cloverland Road, Clarkston, Pomeroy, 
Pullman, Colfax, Rosalia, La Crosse, Oakesdale, Tekoa, 
and Uniontown
655 PM PST Tue Jan 14 2020

...WINTER WEATHER ADVISORY WILL EXPIRE AT 7 PM PST THIS EVENING...

Scattered snow showers will continue this evening but additional
accumulations should be less than a half inch. Thus the winter
weather advisory will expire at 7 pm. 

$$

IDZ004-150700-
/O.CON.KOTX.WW.Y.0007.000000T0000Z-200115T0700Z/
Central Panhandle Mountains-
Including the following locations Kellogg, Pinehurst, Osburn, 
Wallace, Mullan, Fourth of July Pass, Dobson Pass, 
and Lookout Pass
655 PM PST Tue Jan 14 2020

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

* WHAT...Snow expected. Additional snow accumulations 1 to 3
  inches mountains and up to 1 inch valleys.

* WHERE...Kellogg, Pinehurst, Osburn, Wallace, Mullan, Fourth of 
  July Pass, Dobson Pass, Lookout Pass, Lewiston, Lapwai, Peck, 
  Culdesac, Gifford, Lewiston Grade, Kamiah, Craigmont, 
  Nezperce, Winchester, Soldiers Meadow Road, Anatone, Peola, 
  Mountain Road, and Cloverland Road.

* WHEN...Until 11 PM PST this evening.

* IMPACTS...Travel could be very difficult. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WAZ042-151100-
/O.CON.KOTX.WW.Y.0007.000000T0000Z-200115T1500Z/
East Slopes Northern Cascades-
Including the following locations Mazama, Stehekin, Plain, 
and Holden Village
655 PM PST Tue Jan 14 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST
WEDNESDAY FOR THE CASCADE CREST INCLUDING HIGHWAY 2 BETWEEN COLES
CORNER AND STEVENS PASS...

* WHAT...Snow expected for The Cascade Crest including Highway 2 
  between Coles Corner and Stevens Pass. Total snow 
  accumulations of 4 to 9 inches, with local amounts to 12 in 
  the higher elevation.

* WHERE...Mazama, Stehekin, Plain, and Holden Village.

* WHEN...Until 7 AM PST Wednesday.

* IMPACTS...Travel could be very difficult. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WAZ043-151100-
/O.CON.KOTX.WC.Y.0002.200115T0300Z-200115T1800Z/
Okanogan Valley-
Including the following locations Omak, Okanogan, Brewster, 
Bridgeport, Oroville, Nespelem, and Disautel Pass
655 PM PST Tue Jan 14 2020

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
WEDNESDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  15 below zero.

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

* WHEN...Through 10 AM PST Wednesday.

* IMPACTS...The cold wind chills could result in hypothermia if
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.

&&

$$
300 
WWUS46 KOTX 150446
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
846 PM PST Tue Jan 14 2020

...SNOW IN THE CASCADES TONIGHT FOLLOWED BY POTENTIAL HEAVY SNOW NORTHERN 
VALLEYS AND MOUNTAINS LATE WEDNESDAY INTO THURSDAY MORNING...

.A weather system will pass through the Cascades tonight bringing snow 
especially to areas near the Cascade crest. Cold wind chills as
low as 15 degrees below zero will continue down the Okanogan
Valley. A stronger storm arrives late Wednesday with snow
beginning early afternoon in the Cascades before spreading east
into the late afternoon and evening.

IDZ004-150600-
/O.CAN.KOTX.WW.Y.0007.000000T0000Z-200115T0700Z/
Central Panhandle Mountains-
846 PM PST Tue Jan 14 2020

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has decreased over the area with additional snow
accumulations tonight less than one inch.

$$

WAZ042-151500-
/O.NEW.KOTX.WS.A.0002.200115T2100Z-200116T1200Z/
/O.CON.KOTX.WW.Y.0007.000000T0000Z-200115T1500Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, Loup Loup Pass, 
Plain, and Holden Village
846 PM PST Tue Jan 14 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST
WEDNESDAY FOR THE CASCADE CREST INCLUDING HIGHWAY 2 BETWEEN COLES
CORNER AND STEVENS PASS...
...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
LATE WEDNESDAY NIGHT...

* WHAT...For the Winter Weather Advisory for The Cascade Crest
  including Highway 2 between Coles Corner and Stevens Pass, snow.
  Snow accumulations of 4 to 9 inches with local amounts to 12
  inches in the higher elevations. For the Winter Storm Watch,
  heavy snow possible all areas. Total snow accumulations of 6 to
  12 inches possible. 

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

* WHEN...For the Winter Weather Advisory, until 7 AM PST 
  Wednesday. For the Winter Storm Watch, from Wednesday 
  afternoon through late Wednesday night.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Monitor the latest forecasts for updates on this situation. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WAZ043-151500-
/O.NEW.KOTX.WS.A.0002.200116T0000Z-200116T1800Z/
/O.CON.KOTX.WC.Y.0002.000000T0000Z-200115T1800Z/
Okanogan Valley-
Including the following locations Omak, Okanogan, Brewster, 
Bridgeport, Oroville, Nespelem, and Disautel Pass
846 PM PST Tue Jan 14 2020

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
WEDNESDAY...
...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
THURSDAY MORNING...

* WHAT...For the Wind Chill Advisory, very cold wind chills. Wind
  chills as low as 15 below zero. For the Winter Storm Watch, 
  heavy snow possible. Total snow accumulations of 5 to 8 inches 
  possible.

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

* WHEN...For the Wind Chill Advisory, until 10 AM PST Wednesday. 
  For the Winter Storm Watch, from Wednesday afternoon through 
  Thursday morning.

* IMPACTS...The cold wind chills could result in hypothermia if
  precautions are not taken. Travel could be very difficult late
  Wednesday afternoon into Thursday morning. 

* ADDITIONAL DETAILS...Light snow may develop as early as
  Wednesday afternoon increasing in intensity in the evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

Monitor the latest forecasts for updates on this situation. 

&&

$$

WAZ037-038-151500-
/O.NEW.KOTX.WS.A.0002.200116T0000Z-200116T1800Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Northport, 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 Tue Jan 14 2020

...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
THURSDAY MORNING...

* WHAT...Heavy snow possible. Total snow accumulations of 5 to 10 
  inches possible.

* WHERE...Colville, Northport, 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...From Wednesday afternoon through Thursday morning.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the evening or morning commute.

* ADDITIONAL DETAILS...Light snow may develop as early as
  Wednesday afternoon increasing in intensity in the evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$
151 
WWUS46 KOTX 151036
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
236 AM PST Wed Jan 15 2020

...ANOTHER WINTER STORM TO BRING HEAVY SNOW TO THE 
NORTHERN VALLEYS AND MOUNTAINS LATE TODAY INTO THURSDAY
MORNING...

.Cold wind chills as low as 15 degrees below zero will continue 
down the Okanogan Valley this morning. A strong storm arrives 
today with snow beginning early afternoon in the Cascades before 
spreading east into the late afternoon and evening.

WAZ042-152045-
/O.CAN.KOTX.WS.A.0002.200115T2100Z-200116T1200Z/
/O.EXT.KOTX.WW.Y.0007.000000T0000Z-200116T1400Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, Loup Loup Pass, 
Plain, and Holden Village
236 AM PST Wed Jan 15 2020

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 AM PST
THURSDAY...
...WINTER STORM WATCH IS CANCELLED...

* WHAT...Snow. Snow accumulations of 5 to 9 inches with local 
  amounts to 12 inches in the higher elevations. 

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

* WHEN...Until 6 AM PST Thursday.

* IMPACTS...Travel could be very difficult around the region,
  particularly on the Highway 2 approach to Stevens Pass and 
  across Loup Loup and Blewett passes.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 
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.

&&

$$

WAZ043-152045-
/O.UPG.KOTX.WS.A.0002.200116T0000Z-200116T1800Z/
/O.NEW.KOTX.WS.W.0004.200115T2100Z-200116T1800Z/
/O.CON.KOTX.WC.Y.0002.000000T0000Z-200115T1800Z/
Okanogan Valley-
Including the following locations Omak, Okanogan, Brewster, 
Bridgeport, Oroville, Nespelem, and Disautel Pass
236 AM PST Wed Jan 15 2020

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...
...WINTER STORM WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO
10 AM PST THURSDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. 
  Total snow accumulations of 4 to 6 inches. For the Wind Chill 
  Advisory, very cold wind chills. Wind chills as low as 20 
  below zero.

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

* WHEN...For the Winter Storm Warning, from 1 PM this afternoon 
  to 10 AM PST Thursday. For the Wind Chill Advisory, until 10 
  AM PST this morning.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the evening commute. The cold wind 
  chills could cause frostbite on exposed skin in as little as 30 
  minutes.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WAZ037-038-152045-
/O.UPG.KOTX.WS.A.0002.200116T0000Z-200116T1800Z/
/O.NEW.KOTX.WS.W.0004.200116T0000Z-200116T2000Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Northport, 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
236 AM PST Wed Jan 15 2020

...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO
NOON PST THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 6
  inches in the valleys and 6 to 12 inches in the mountains.

* WHERE...Colville, Northport, 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...From 4 PM this afternoon to noon PST Thursday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute.



PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

WAZ041-044-152045-
/O.NEW.KOTX.WW.Y.0008.200115T1800Z-200116T0600Z/
Wenatchee Area-Waterville Plateau-
Including the following locations Wenatchee, Chelan, Entiat, 
Cashmere, Number 1 Canyon, Number 2 Canyon, Pangborn Airport, 
Waterville, Mansfield, and Badger Mountain Road
236 AM PST Wed Jan 15 2020

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO
10 PM PST THIS EVENING...

* WHAT...Snow expected. Total snow accumulations of 2 to 4 
  inches.

* WHERE...Wenatchee, Chelan, Entiat, Cashmere, Number 1 Canyon, 
  Number 2 Canyon, Pangborn Airport, Waterville, Mansfield, and 
  Badger Mountain Road.

* WHEN...From 10 AM this morning to 10 PM PST this evening.

* IMPACTS...Travel could be difficult. The hazardous conditions
  could impact the evening commute. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IDZ001-152045-
/O.NEW.KOTX.WW.Y.0008.200116T0600Z-200117T0000Z/
Northern Panhandle-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, and Schweitzer Mountain Road
236 AM PST Wed Jan 15 2020

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO
4 PM PST THURSDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 inches
  in the valleys with 6 to 10 inches in the mountains.

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, and 
  Schweitzer Mountain Road.

* WHEN...From 10 PM this evening to 4 PM PST Thursday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility. The hazardous 
  conditions could impact the Thursday morning commute.



PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
036 
WWUS46 KOTX 151800
WSWOTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
1000 AM PST Wed Jan 15 2020

...ANOTHER WINTER STORM TO BRING HEAVY SNOW TO THE NORTHERN
VALLEYS AND MOUNTAINS LATE TODAY INTO THURSDAY MORNING...

.A strong storm arrives today with snow beginning early afternoon
in the Cascades before spreading east into the late afternoon and
evening.

WAZ043-160100-
/O.EXP.KOTX.WC.Y.0002.000000T0000Z-200115T1800Z/
/O.CON.KOTX.WS.W.0004.200115T2100Z-200116T1800Z/
Okanogan Valley-
Including the following locations Omak, Okanogan, Brewster, 
Bridgeport, Oroville, Nespelem, and Disautel Pass
1000 AM PST Wed Jan 15 2020

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON TO 10 AM PST THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 6 
  inches.

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

* WHEN...For the Winter Storm Warning, from 1 PM this afternoon 
  to 10 AM PST Thursday. For the Wind Chill Advisory, until 10 
  AM PST this morning.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

WAZ037-038-160100-
/O.CON.KOTX.WS.W.0004.200116T0000Z-200116T2000Z/
Northeast Mountains-Okanogan Highlands-
Including the following locations Colville, Northport, 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
1000 AM PST Wed Jan 15 2020

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO NOON PST THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 6 
  inches in the valleys and 6 to 12 inches in the mountains.

* WHERE...Colville, Northport, 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...From 4 PM this afternoon to noon PST Thursday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow
  could significantly reduce visibility. The hazardous conditions
  could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

WAZ042-160100-
/O.CON.KOTX.WW.Y.0007.000000T0000Z-200116T1400Z/
East Slopes Northern Cascades-
Including the following locations Leavenworth, Mazama, Twisp, 
Winthrop, Stehekin, Conconully, Blewett Pass, Loup Loup Pass, 
Plain, and Holden Village
1000 AM PST Wed Jan 15 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST
THURSDAY...

* WHAT...Snow. Snow accumulations of 5 to 9 inches with local 
  amounts to 12 inches in the higher elevations.

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

* WHEN...Until 6 AM PST Thursday.

* IMPACTS...Travel could be very difficult around the region,
  particularly on the Highway 2 approach to Stevens Pass and
  across Loup Loup and Blewett passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WAZ041-044-160100-
/O.CON.KOTX.WW.Y.0008.000000T0000Z-200116T0600Z/
Wenatchee Area-Waterville Plateau-
Including the following locations Wenatchee, Chelan, Entiat, 
Cashmere, Number 1 Canyon, Number 2 Canyon, Pangborn Airport, 
Waterville, Mansfield, and Badger Mountain Road
1000 AM PST Wed Jan 15 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...

* WHAT...Snow expected. Total snow accumulations of 2 to 4 
  inches.

* WHERE...Wenatchee, Chelan, Entiat, Cashmere, Number 1 Canyon, 
  Number 2 Canyon, Pangborn Airport, Waterville, Mansfield, and 
  Badger Mountain Road.

* WHEN...From 10 AM this morning to 10 PM PST this evening.

* IMPACTS...Travel could be difficult. The hazardous conditions 
  could impact the evening commute.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IDZ001-160100-
/O.CON.KOTX.WW.Y.0008.200116T0600Z-200117T0000Z/
Northern Panhandle-
Including the following locations Sandpoint, Bonners Ferry, 
Priest River, Eastport, and Schweitzer Mountain Road
1000 AM PST Wed Jan 15 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 4 PM PST THURSDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches in the valleys with 6 to 10 inches in the mountains.

* WHERE...Sandpoint, Bonners Ferry, Priest River, Eastport, and 
  Schweitzer Mountain Road.

* WHEN...From 10 PM this evening to 4 PM PST Thursday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow
  could significantly reduce visibility. The hazardous conditions
  could impact the Thursday morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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 wind chill advisory 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 wind chill advisory went out at Jan 14, 2:45 PM PST, 2 minutes earlier.

Area forecast discussion, Jan 14, 2:45 PM PST, 2 minutes before
Area Forecast Discussion
National Weather Service Spokane WA
245 PM PST Tue Jan 14 2020

.SYNOPSIS...
Light snow will move out of eastern Washington and the Idaho
Panhandle this evening, while other snow moves into the Cascades.
Temperatures will fall into the single digits over much of
central and eastern Washington. The next broad threat of snow
arrives Wednesday night and persist into Thursday. Widespread
light to moderate accumulations are expected across north central
Washington into the Idaho Panhandle.

&&

.DISCUSSION...
Tonight and Wednesday: an active and complex pattern will
continue across the Inland NW, with a lot of moving parts. First
this afternoon and early evening the region will remain under a
broad upper trough. The westerly flow is carrying a couple
mid-level disturbances across the region. One is pushing toward
the WA/ID border and another wave is near the Cascades and will be
coming east on the heels of the first. These coupled with some
steep lapse rates, cold air and moisture led to another blossom of
snow showers across the region this afternoon and the risk will
remain high through about 06Z. Yet in general the risk will start
wane from the west after about 01-03Z, with the focus moving into
the central Panhandle. Another 1/4 to 1 inch will be possible
over the Spokane/C'dA metro and northeast mountains, while 1 to 3
will be possible over the higher Palouse in the central Panhandle
with the higher of that range toward the central Panhandle. I
extended the winter weather advisory for the Central Panhandle
until 10 PM (06Z), while I kept them going for the other areas
until 03Z but these may be dropped earlier if things decline
quicker.

Second the next part of the evolving weather pattern develops
from the west after 03Z-06Z. The mean trough axis shifts east and
ridge builds in from the west, with a warm front coming into the
Cascades in advance of a strong low off the Pacific Coast.
Moisture spreading along this warm front will lead to increasing
snow over the Cascades through tonight and it could be moderate to
locally heavy, especially closer to the crest. A winter weather
advisory is being issued for that region. Lower elevations around
the Cascades, such as the Methow and upper Wenatchee Valley, may
see an inch or three inches as well, especially overnight. Some
light snow may still be possible over the northern mountains and
Panhandle with this incoming front too, perhaps along the northern
rim of the Columbia Basin including the Spokane/C’dA area.
However for the most part these latter areas should only see less
than half inch, if anything at all. Confidence in snow is this
latter area is low, but some risk exists.

Third going into the day Wednesday the Pacific low approaches the
coast. Initially this pushes the precipitation threat northward
for the morning as the flow turns south/southeast. The main
threat will be over the Cascade crest and northern Panhandle
mountains, but I kept some limited threat over the Okanogan
Highlands and northeast WA, just skimming the northern Lincoln-
Spokane county border. Then in the afternoon the low starts close
into the coast and deepening moisture and lift, including some
increasing diffluent flow in the mid-levels, will start to
increase precipitation again across the Cascades, with slight
chances spilling into the western Columbia Basin. With that said
the main system does not start to move in until Wednesday night,
but this leading edge of precipitation could drop and inch or so
in the Cascades.

Meanwhile, we still have some cold temperatures and wind to deal
with. First with regard to temperatures tonight's low are
expected to be some of the coldest of the week. Some clearing is
possible early this evening before more clouds develop overnight
into early Wednesday. That limited clearing, if it occurs, will
help temperatures drop. However if no clearing occurs, then my
forecast lows may be too cold. Wednesday should be a bit milder,
but still values will be some 10 degrees below normal. Next with
regard to wind, speeds will remain breezy down the Okanogan
Valley. This will lead to more bitter wind chills and another wind
chill advisory is being issued for the that region through
Wednesday morning. Other breezy conditions will be found over the
Palouse this evening. Initially they will be from the southwest,
but then turn southeastern and increase west-northwestward. With
the recent dry snows we have had this will mean the potential for
blowing snow. Much of the Palouse tonight and Wednesday will have
this risk, while portions of south and western Spokane county,
into the eastern Lincoln county will have a risk for blowing snow
going into Wednesday. This will bring a threat of reduces
visibility and snow blowing onto roads. /Cote'

Wednesday Night and Thursday: A tightly wound low pressure system
will move inland Wed night. As it spreads into Vancouver Island,
warm frontal precipitation will blossom over central and eastern
Washington early in the evening and spread across northeast
Washington and north Idaho overnight. At this time, the models are
in decent agreement that the most significant precipitation will
fall north of Interstate 90 Wednesday night into Thursday:

*Snow Amounts: Using a blend of model precipitation yields
 widespread light to moderate snow accumulations from the East
 Slopes of the Northern Cascades across northern Washington into
 the north Idaho Panhandle. Conservative snow ratios (between
 15-20 to 1 central WA and 12-15 to 1 northeast WA and north ID)
 produces 4 to 7 inches for Leavenworth, Plain, Chelan, the Methow
 Valley, Okanogan Valley, and Republic area. It looks like 2 to 5
 inches for Colville, Deer Park, Metaline Falls, Sandpoint and
 Bonners Ferry. Depending on how quickly the warm front lifts
 northward, will determine how much Kellogg, Spokane metro, and
 the Highway 2 corridor in Washington receives. At this time, it
 looks like an inch or two.

*Winds and Drifting Snow: Weather spotter reports from southeast
 Washington, the Idaho Palouse, and rural Spokane county suggest
 there is between 3 and 7 inches of fluffy snow on the ground.
 This fluffy layer which has fallen today and yesterday is on top
 of a denser snow which fell over the weekend. The fluff on top
 will be prone to blowing until our temperatures climb above
 freezing forming a crust. East or southeast winds of 10 to 20 mph
 will likely develop on Wednesday and persist Wednesday night and
 finally decrease Thursday morning. Some of our problem areas over
 the Palouse, rural Spokane County and the Camas Prairie may
 experience significant drifting especially on rural highways and
 county roads.

Friday: Snow is expected to exit the Idaho Panhandle on Friday
with accumulations overnight of 2 to 4 inches across the central
and southern Idaho Panhandle. Much of central and eastern
Washington should enjoy a break in the active weather Friday with
afternoon temperatures in the upper 20s and lower 30s...pretty
close to average. /GKoch

Saturday through Monday: There will be another system moving through
on Saturday, but coming from the west, it will also bring warming
temperatures. Therefore, precipitation will likely start as
widespread snow early Saturday, but may change as the day
progresses. With temperatures warming, the snow may become a rain-
snow mix further south into the Columbia Basin later in the day and
overnight. While still not in full agreement, models are favoring
the higher snow totals and lingering snow occurring in the Cascades,
northern Washington, and Idaho Panhandle through the weekend.
Earlier discussions noted that this incoming system could bring some
freezing rain, but as of now, models are not showing the needed
conditions. However, there is still time for this to change.
Following the round of snow moving through on Saturday, much of the
region will likely get a break from the precipitation and have a dry
day or so. After a bitterly cold week for many, temperatures will be
rising this weekend and into early next week. These will warm back
near seasonal normals and likely bring highs back into the 30s and
lows in the 20s. JS

&&

.AVIATION...

18Z TAFS: Light snow will continue to impact GEG-SFF-COE-PUW-LWS
this afternoon and evening, before winding down after 02-04Z.
Expect MVFR/IFR conditions. Some blowing snow is also possible
around PUW. EAT/MWH will see more VFR conditions with a limited -shsn
threat. Precipitation declines a brief VFR conditions possible
over the region, before conditions deteriorate later this evening
into Wednesday morning. Cote'

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane         7  26  23  34  24  30 /  30  10  70  50  30  10
Coeur d'Alene   9  27  23  35  26  30 /  50  10  70  60  40  20
Pullman        13  29  25  36  24  31 /  60   0  40  30  60  10
Lewiston       18  33  31  41  28  37 /  30   0  20  20  50  10
Colville        2  23  18  33  19  32 /  20  20  90  90  30  10
Sandpoint      12  25  20  32  25  31 /  50  30  70  80  70  50
Kellogg        13  27  21  35  26  31 /  70  10  70  60  70  50
Moses Lake      8  30  24  35  21  34 /  10  20  50  20  10   0
Wenatchee      10  23  20  31  19  31 /  20  30  90  40  10   0
Omak            4  19  19  30  19  29 /  30  20  90  70  20   0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...Winter Weather Advisory until 11 PM PST this evening for Central
     Panhandle Mountains.

     Winter Weather Advisory until 4 PM PST this afternoon for Coeur
     d'Alene Area-Idaho Palouse-Lewis and Southern Nez Perce
     Counties-Lewiston Area.

WA...Winter Weather Advisory until 4 PM PST this afternoon for Lower
     Garfield and Asotin Counties-Northeast Blue Mountains-
     Washington Palouse.

     Winter Weather Advisory until 7 AM PST Wednesday for the cascade
     crest including highway 2 between coles corner and stevens
     pass for East Slopes Northern Cascades.

     Wind Chill Advisory from 7 PM this evening to 10 AM PST
     Wednesday for Okanogan Valley.

&&
Hazardous weather outlook, Jan 14, 2:04 PM PST, 43 minutes before
Hazardous Weather Outlook
National Weather Service Spokane WA
204 PM PST Tue Jan 14 2020

WAZ041>044-151500-
Wenatchee Area-East Slopes Northern Cascades-Okanogan Valley-
Waterville Plateau-
204 PM PST Tue Jan 14 2020

This Hazardous Weather Outlook is for portions of Central
Washington and North Central Washington.

.DAY ONE...THIS AFTERNOON AND TONIGHT

More light to moderate snow will continue to pile up along the
Cascade Crest tonight including Stevens Pass.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Light to moderate snow accumulations will fall Wednesday night
into Thursday morning over the valleys of the East Slopes of the
Cascades, the Okanogan Valley, Waterville Plateau, and Wenatchee
area.

IDZ001-004-WAZ037-038-151500-
Northern Panhandle-Central Panhandle Mountains-
Northeast Mountains-Okanogan Highlands-
204 PM PST Tue Jan 14 2020

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

Light snow will persist into the evening over the Idaho Panhandle.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Another round of snow will bring accumulating snow to the Idaho
Panhandle and northeast Washington Wednesday night into Thursday.
The most significant accumulations are favored over north central
and northeast Washington as well as the far north Idaho Panhandle
including Republic, Colville, and Sandpoint.

IDZ002-003-026-027-WAZ031>033-036-151500-
Coeur d'Alene Area-Idaho Palouse-Lewiston Area-
Lewis and Southern Nez Perce Counties-Northeast Blue Mountains-
Lower Garfield and Asotin Counties-Washington Palouse-
Spokane Area-
204 PM PST Tue Jan 14 2020

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

Light snow will decrease this evening.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Increasing east or southeast winds Wednsday and Wednesday night
will have the potential to create drifting snow across the
Palouse, West Plains, rural Spokane county, and parts of the Camas
Prairie.

WAZ034-035-151500-
Moses Lake Area-Upper Columbia Basin-
204 PM PST Tue Jan 14 2020

This Hazardous Weather Outlook is for portions of East Central
Washington.

.DAY ONE...THIS AFTERNOON AND TONIGHT

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

No hazardous weather is expected at this time.

Nearby

Wind Chill Advisories in Washington, 2020Every wind chill advisory in 2020

Sources

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