Alert archive / Montana / Winter Weather Advisories in 2018

Winter Weather Advisory 21, NWS Missoula, MT

February 15, 2018Missoula County, Ravalli County, Montana

NWS Missoula, MT issued this winter weather advisory at Feb 15, 2018, 3:18 PM MST for Missoula County, Ravalli County, Montana. It took effect at Feb 16, 2018, 5:00 PM MST. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued
Feb 15, 2018, 3:18 PM MST (22:18 UTC)
In effect from
Feb 16, 2018, 5:00 PM MST
Expired
Feb 17, 2018, 11:00 AM MST
In force
18 hr
Issued by
NWS Missoula, MT

Counties Missoula County, MT, Ravalli County, MT

The radar

The Missoula radar (KMSX), 54 km from the middle of the area, began a volume at 22:18 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, 10.3 hours before the alert went out and 220 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 2018-02-15Temperature 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 2018-02-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 square meters per square second.1939587897117Sfc1 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
1490 m above ground
0-6 km bulk shear
90 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

649 
WWUS45 KMSO 152218
WSWMSO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
318 PM MST Thu Feb 15 2018

MTZ004-170600-
/O.NEW.KMSO.WW.Y.0020.180216T1200Z-180217T0600Z/
/O.NEW.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Lower Clark Fork Region-
318 PM MST Thu Feb 15 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TO 11 PM MST
FRIDAY...
...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SUNDAY AFTERNOON...

* WHAT...For Friday, snow expected. Generally light to moderate
  snow intensity is expected, though a period of heavy snow is
  possible on Lookout Pass Friday afternoon. Total snow
  accumulations of 3 to 5 inches in valleys, with 9 to 12 inches
  over Lookout Pass.

* For Saturday into Sunday, heavy snow and blowing snow possible.
  Total snow accumulations of 9 to 12 inches, with up to 2 feet
  possible over Lookout Pass. Gusty winds will begin early Sunday,
  which could cause a period of blowing and drifting snow and poor
  visibility. A flash freeze of roadways Sunday morning may create
  very icy conditions. Travel may become hazardous.

* WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, 
  Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to 
  Haugan.

* WHEN...For the Winter Weather Advisory, from 5 AM to 11 PM MST 
  Friday. For the Winter Storm Watch, from Saturday morning 
  through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Travel
  may become dangerous by Sunday. Tree branches could fall. Winds
  gusting as high as 45 mph may cause areas of blowing and 
  drifting snow Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing 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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

IDZ005-006-170600-
/O.NEW.KMSO.WW.Y.0020.180216T1200Z-180217T1200Z/
/O.NEW.KMSO.WS.A.0004.180217T1800Z-180218T1200Z/
Northern Clearwater Mountains-Southern Clearwater Mountains-
218 PM PST Thu Feb 15 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM FRIDAY TO 4 AM PST
SATURDAY...
...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
LATE SATURDAY NIGHT...

* WHAT...For Friday through Friday night, snow expected. Roads
  will become slick and snow covered. Total snow accumulations of
  7 to 11 inches for elevations above 3000 feet, including Lolo
  Pass. 1 to 3 inches expected for elevations below 3000 feet,
  including Lowell. 

* For Saturday into Sunday, heavy snow possible, especially above
  3000 feet. Travel may become difficult due to snow covered 
  roads and low visibility. Total snow accumulations of 12 to 18 
  inches for elevations above 3000 feet. 1 to 2 inches possible 
  below 3000 feet. 

* WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, 
  Dixie, Elk City, and Highway 12 Lowell to Lolo Pass.

* WHEN...For the Winter Weather Advisory, from 4 AM Friday to 4 
  AM PST Saturday. For the Winter Storm Watch, from Saturday 
  morning through late Saturday night.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Travel
  may become dangerous Saturday. Tree branches could fall. 

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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

MTZ002-170600-
/O.NEW.KMSO.WW.Y.0020.180216T1200Z-180217T0600Z/
/O.NEW.KMSO.WS.A.0004.180217T2100Z-180219T0000Z/
West Glacier Region-
318 PM MST Thu Feb 15 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TO 11 PM MST
FRIDAY...
...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SUNDAY AFTERNOON...

* WHAT...For Friday, snow and blowing snow expected. Total snow
  accumulations of 3 to 6 inches in the valleys with 8 to 12
  inches possible in the higher terrain, including over Marias
  Pass. Gusty winds between Essex to Marias Pass will cause low
  visibility due to blowing snow.

* For Saturday through Sunday, heavy snow and blowing snow
  possible. Total snow accumulations of 12 to 18 inches are
  possible. Gusty winds will develop by Saturday afternoon which
  could cause a period of blowing and drifting snow and poor
  visibility. Blizzard conditions are possible. A flash freeze of
  roadways Saturday evening may create very icy conditions. 
  Travel may become hazardous to impossible.

* WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan 
  Lake, Marias Pass, and Polebridge.

* WHEN...For the Winter Weather Advisory, from 5 AM to 11 PM MST 
  Friday. For the Winter Storm Watch, from Saturday afternoon 
  through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Travel
  may become dangerous to impossible Saturday evening. Damage to
  trees and power lines is likely on Saturday evening. Winds 
  gusting as high as 55 mph will cause areas of blowing and 
  drifting snow Saturday evening into Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing 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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

MTZ006-170600-
/O.NEW.KMSO.WW.Y.0020.180216T2100Z-180217T1200Z/
/O.NEW.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Bitterroot/Sapphire Mountains-
318 PM MST Thu Feb 15 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM FRIDAY TO 5 AM MST
SATURDAY...
...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SUNDAY AFTERNOON...

* WHAT...For Friday and Friday night, snow expected. Roads will
  become slick and snow covered. Total snow accumulations of 7 to
  11 inches, including over Lolo Pass and Lost Trail Pass.

* For Saturday through Sunday, heavy snow and blowing snow 
  possible. Travel may become difficult due to slick roads and low
  visibility. Total snow accumulations of 9 to 13 inches, 
  localized amounts up to 18 inches for Lolo Pass, are possible.

* WHERE...Bitterroot/Sapphire Mountains.

* WHEN...For the Winter Weather Advisory, from 2 PM Friday to 5 
  AM MST Saturday. For the Winter Storm Watch, from Saturday 
  morning through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Travel
  may become difficult Saturday into Sunday. Tree branches could
  fall. 

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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

MTZ007-043-170600-
/O.NEW.KMSO.WW.Y.0020.180216T2100Z-180217T1200Z/
/O.NEW.KMSO.WS.A.0004.180218T0000Z-180219T0000Z/
Butte/Blackfoot Region-Potomac/Seeley Lake Region-
318 PM MST Thu Feb 15 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM FRIDAY TO 5 AM MST
SATURDAY...
...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SUNDAY AFTERNOON...

* WHAT...For Friday afternoon into Saturday morning, snow and
  blowing snow expected. Roads will become slick and snow covered
  with periods of low visibility due to blowing snow. Total snow
  accumulations of 3 to 6 inches, are expected.
 
* For Saturday afternoon through Sunday, heavy snow and blowing
  snow possible. Total snow accumulations of 5 to 9 inches. Gusty
  winds will develop by early Sunday morning, which could cause a
  period of blowing and drifting snow and poor visibility.
  Blizzard conditions are possible. A flash freeze of roadways
  Saturday night may create very icy conditions. Travel may 
  become hazardous to impossible.

* WHERE...Butte, Georgetown Lake, Highway 12 Garrison to 
  Elliston, Homestake Pass, MacDonald Pass, Highway 200 Bonner 
  to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East 
  Missoula to Bearmouth.

* WHEN...For the Winter Weather Advisory, from 2 PM Friday to 5 
  AM MST Saturday. For the Winter Storm Watch, from Saturday 
  afternoon through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Travel
  may become dangerous to impossible Saturday night into Sunday. 
  Tree branches could fall. Winds gusting as high as 45 mph will 
  cause areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing 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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

MTZ005-170600-
/O.NEW.KMSO.WW.Y.0021.180217T0000Z-180217T1200Z/
/O.NEW.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Missoula/Bitterroot Valleys-
318 PM MST Thu Feb 15 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM FRIDAY TO 5 AM MST
SATURDAY...
...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SUNDAY AFTERNOON...

* WHAT...For Friday evening into Saturday morning, snow expected.
  Total snow accumulations of 1 to 4 inches are expected. A period
  of heavy snow is possible Friday evening, which could cause
  roads to become snow covered in a short period of time. In
  addition, heavy snow could drastically lower visibility.
  
* For Saturday into Sunday, heavy snow and blowing snow possible,
  particularly from Stevensville north to Missoula. Total snow
  accumulations of 6 to 10 inches are possible from Stevensville
  north to Missoula. Total snow accumulations of 4 to 7 inches,
  are possible from Stevensville south. Gusty winds will develop
  Sunday morning, which could cause a period of blowing and
  drifting snow and poor visibility. A flash freeze of roadways
  Sunday morning may create very icy conditions. Travel may 
  become hazardous.

* WHERE...Missoula/Bitterroot Valleys.

* WHEN...For the Winter Weather Advisory, from 5 PM Friday to 5 
  AM MST Saturday. For the Winter Storm Watch, from Saturday 
  morning through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on slippery road conditions Friday
  evening into Saturday morning. Be prepared for reduced 
  visibilities at times. Plan on hazardous travel conditions by 
  Sunday morning. Winds gusting as high as 40 mph could cause 
  areas of blowing and drifting snow Sunday.

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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

IDZ007-162100-
/O.NEW.KMSO.WW.Y.0020.180216T1200Z-180216T2100Z/
Orofino/Grangeville Region-
218 PM PST Thu Feb 15 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 1 PM PST
FRIDAY...

* WHAT...Snow expected. Roads will become slick and snow covered.
  Total snow accumulations of 1 to 3 inches are expected.

* WHERE...Camas Prairie, Grangeville and vicinity, and Greer 
  Grade.

* WHEN...From 4 AM to 1 PM PST Friday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. 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.

&&

$$

IDZ008-162100-
/O.NEW.KMSO.WW.Y.0020.180216T1200Z-180216T2100Z/
Lower Hells Canyon/Salmon River Region-
218 PM PST Thu Feb 15 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 1 PM PST
FRIDAY...

* WHAT...Snow expected. Total snow accumulations of up to 2 inches
  are expected, with 3 to 5 inches expected over Whitebird Grade.

* WHERE...Lower Hells Canyon/Salmon River Region.

* WHEN...From 4 AM to 1 PM PST Friday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. 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.

&&

$$

MTZ001-170600-
/O.NEW.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Kootenai/Cabinet Region-
318 PM MST Thu Feb 15 2018

...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SUNDAY AFTERNOON...

* WHAT...Heavy snow and blowing snow possible. Total snow
  accumulations of 8 to 12 inches are possible. Gusty winds will
  develop Saturday night which could cause a period of blowing and
  drifting snow and poor visibility. A flash freeze of roadways
  Saturday night may create very icy conditions. Travel may 
  become hazardous.

* WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to 
  Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to 
  Whitefish.

* WHEN...From Saturday morning through Sunday afternoon.

* ADDITIONAL DETAILS...Travel could be very difficult to
  impossible. Winds gusting as high as 40 mph could cause areas of
  blowing and drifting snow. Cold wind chills as low as 10 below 
  zero could cause frostbite on exposed skin in as little as 30 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

MTZ003-170600-
/O.NEW.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Flathead/Mission Valleys-
318 PM MST Thu Feb 15 2018

...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SUNDAY AFTERNOON...

* WHAT...Heavy snow and blowing snow possible. Total snow
  accumulations of 8 to 12 inches are possible. Gusty winds will
  develop Saturday night which could cause a period of blowing and
  drifting snow and poor visibility. Blizzard conditions are
  possible. A flash freeze of roadways Saturday night may create 
  very icy conditions. Travel may become hazardous to impossible, 
  especially through the Flathead Valley.

* WHERE...Flathead Lake, Flathead Valley, Mission Valley, and 
  Polson.

* WHEN...From Saturday morning through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Tree 
  branches could fall. Winds gusting as high as 50 mph could 
  cause widespread blowing and drifting snow. The cold wind 
  chills as low as 15 below zero could result in hypothermia if 
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$
5 follow-up statements
402 
WWUS45 KMSO 161908 
WSWMSO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
1208 PM MST Fri Feb 16 2018

IDZ007-008-162015-
/O.CAN.KMSO.WW.Y.0020.000000T0000Z-180216T2100Z/
Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region-
1108 AM PST Fri Feb 16 2018

...WINTER WEATHER ADVISORY IS CANCELLED...


$$

MTZ004-171915-
/O.CON.KMSO.WW.Y.0020.000000T0000Z-180217T0600Z/
/O.CON.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Lower Clark Fork Region-
1208 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...
...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SUNDAY AFTERNOON...

* WHAT...For Friday, snow expected. Generally light to moderate 
  snow intensity is expected, though a period of heavy snow is 
  possible on Lookout Pass Friday afternoon. Total snow 
  accumulations of 3 to 5 inches in valleys, with 9 to 12 inches 
  over Lookout Pass.

* WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, 
  Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to 
  Haugan.

* WHEN...For the Winter Weather Advisory, from 5 AM to 11 PM MST 
  Friday. For the Winter Storm Watch, from Saturday morning 
  through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. 
  Travel may become dangerous by Sunday. Tree branches could 
  fall. Winds gusting as high as 45 mph may cause areas of 
  blowing and drifting snow Sunday.

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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

IDZ005-006-171915-
/O.CON.KMSO.WW.Y.0020.000000T0000Z-180217T1200Z/
/O.CON.KMSO.WS.A.0004.180217T1800Z-180218T1200Z/
Northern Clearwater Mountains-Southern Clearwater Mountains-
1108 AM PST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
SATURDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH LATE SATURDAY NIGHT...

* WHAT...For Friday through Friday night, snow expected. Roads 
  will become slick and snow covered. Total snow accumulations 
  of 7 to 11 inches for elevations above 3000 feet, including 
  Lolo Pass. 1 to 3 inches expected for elevations below 3000 
  feet, including Lowell.

* WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, 
  Dixie, Elk City, and Highway 12 Lowell to Lolo Pass.

* WHEN...For the Winter Weather Advisory, from 4 AM Friday to 4 
  AM PST Saturday. For the Winter Storm Watch, from Saturday 
  morning through late Saturday night.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. 
  Travel may become dangerous Saturday. Tree branches could fall.

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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

MTZ006-171915-
/O.CON.KMSO.WW.Y.0020.180216T2100Z-180217T1200Z/
/O.CON.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Bitterroot/Sapphire Mountains-
1208 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SUNDAY AFTERNOON...

* WHAT...For Friday and Friday night, snow expected. Roads will 
  become slick and snow covered. Total snow accumulations of 7 
  to 11 inches, including over Lolo Pass and Lost Trail Pass.

* WHERE...Bitterroot/Sapphire Mountains.

* WHEN...For the Winter Weather Advisory, from 2 PM Friday to 5 
  AM MST Saturday. For the Winter Storm Watch, from Saturday 
  morning through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. 
  Travel may become difficult Saturday into Sunday. Tree 
  branches could fall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing 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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

MTZ002-171915-
/O.CON.KMSO.WW.Y.0020.000000T0000Z-180217T0600Z/
/O.CON.KMSO.WS.A.0004.180217T2100Z-180219T0000Z/
West Glacier Region-
1208 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...
...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SUNDAY AFTERNOON...

* WHAT...For Friday, snow and blowing snow expected. Total snow 
  accumulations of 3 to 6 inches in the valleys with 8 to 12 
  inches possible in the higher terrain, including over Marias 
  Pass. Gusty winds between Essex to Marias Pass will cause low 
  visibility due to blowing snow.

* WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan 
  Lake, Marias Pass, and Polebridge.

* WHEN...For the Winter Weather Advisory, from 5 AM to 11 PM MST 
  Friday. For the Winter Storm Watch, from Saturday afternoon 
  through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. 
  Travel may become dangerous to impossible Saturday evening. 
  Damage to trees and power lines is likely on Saturday evening. 
  Winds gusting as high as 55 mph will cause areas of blowing 
  and drifting snow Saturday evening into Sunday.

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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

MTZ007-043-171915-
/O.CON.KMSO.WW.Y.0020.180216T2100Z-180217T1200Z/
/O.CON.KMSO.WS.A.0004.180218T0000Z-180219T0000Z/
Butte/Blackfoot Region-Potomac/Seeley Lake Region-
1208 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SUNDAY AFTERNOON...

* WHAT...For Friday afternoon into Saturday morning, snow and 
  blowing snow expected. Roads will become slick and snow 
  covered with periods of low visibility due to blowing snow. 
  Total snow accumulations of 3 to 6 inches, are expected.

* WHERE...Butte, Georgetown Lake, Highway 12 Garrison to 
  Elliston, Homestake Pass, MacDonald Pass, Highway 200 Bonner 
  to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East 
  Missoula to Bearmouth.

* WHEN...For the Winter Weather Advisory, from 2 PM Friday to 5 
  AM MST Saturday. For the Winter Storm Watch, from Saturday 
  afternoon through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. 
  Travel may become dangerous to impossible Saturday night into 
  Sunday. Tree branches could fall. Winds gusting as high as 45 
  mph will cause areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing 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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

MTZ005-171915-
/O.CON.KMSO.WW.Y.0021.180217T0000Z-180217T1200Z/
/O.CON.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Missoula/Bitterroot Valleys-
1208 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 AM MST SATURDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SUNDAY AFTERNOON...

* WHAT...For Friday evening into Saturday morning, snow 
  expected. Total snow accumulations of 1 to 4 inches are 
  expected. A period of heavy snow is possible Friday evening, 
  which could cause roads to become snow covered in a short 
  period of time. In addition, heavy snow could drastically 
  lower visibility.

* WHERE...Missoula/Bitterroot Valleys.

* WHEN...For the Winter Weather Advisory, from 5 PM Friday to 5 
  AM MST Saturday. For the Winter Storm Watch, from Saturday 
  morning through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on slippery road conditions Friday 
  evening into Saturday morning. Be prepared for reduced 
  visibilities at times. Plan on hazardous travel conditions by 
  Sunday morning. Winds gusting as high as 40 mph could cause 
  areas of blowing and drifting snow Sunday.

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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

MTZ001-171915-
/O.CON.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Kootenai/Cabinet Region-
1208 PM MST Fri Feb 16 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SUNDAY AFTERNOON...

* WHAT...Heavy snow and blowing snow possible. Total snow 
  accumulations of 8 to 12 inches are possible. Gusty winds will 
  develop Saturday night which could cause a period of blowing 
  and drifting snow and poor visibility. A flash freeze of 
  roadways Saturday night may create very icy conditions. Travel 
  may become hazardous.

* WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to 
  Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to 
  Whitefish.

* WHEN...From Saturday morning through Sunday afternoon.

* ADDITIONAL DETAILS...Travel could be very difficult to 
  impossible. Winds gusting as high as 40 mph could cause areas 
  of blowing and drifting snow. Cold wind chills as low as 10 
  below zero could cause frostbite on exposed skin in as little 
  as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

MTZ003-171915-
/O.CON.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Flathead/Mission Valleys-
1208 PM MST Fri Feb 16 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SUNDAY AFTERNOON...

* WHAT...Heavy snow and blowing snow possible. Total snow 
  accumulations of 8 to 12 inches are possible. Gusty winds will 
  develop Saturday night which could cause a period of blowing 
  and drifting snow and poor visibility. Blizzard conditions are 
  possible. A flash freeze of roadways Saturday night may create 
  very icy conditions. Travel may become hazardous to impossible,
   especially through the Flathead Valley.

* WHERE...Flathead Lake, Flathead Valley, Mission Valley, and 
  Polson.

* WHEN...From Saturday morning through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Tree 
  branches could fall. Winds gusting as high as 50 mph could 
  cause widespread blowing and drifting snow. The cold wind 
  chills as low as 15 below zero could result in hypothermia if 
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$
753 
WWUS45 KMSO 162153
WSWMSO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
253 PM MST Fri Feb 16 2018

MTZ004-172200-
/O.UPG.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
/O.NEW.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
/O.CON.KMSO.WW.Y.0020.000000T0000Z-180217T0600Z/
Lower Clark Fork Region-
253 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...
...WINTER STORM WARNING IN EFFECT FROM 11 AM SATURDAY TO 5 PM MST
SUNDAY...

* WHAT...Heavy snow and blowing snow expected. Snow will become
  moderate to heavy during this evening before decreasing
  overnight. Heavy snow returns during Saturday morning. Total
  snow accumulations of 9 to 12 inches, with up to 2 feet possible
  over Lookout Pass, are expected. Gusty winds will begin early
  Sunday, which will cause a period of blowing and drifting snow 
  and poor visibility. A flash freeze of roadways Sunday morning 
  may create very icy conditions. Travel may become hazardous. 

* WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, 
  Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to 
  Haugan.

* WHEN...For the Winter Storm Warning, from 11 AM Saturday to 5 
  PM MST Sunday. For the Winter Weather Advisory, until 11 PM 
  MST this evening.

* ADDITIONAL DETAILS...Travel will be very difficult to 
  impossible. Winds gusting as high as 40 mph will cause areas 
  of blowing and drifting snow. Plan on difficult travel 
  conditions. Be prepared for reduced visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.


&&

$$

IDZ005-006-172200-
/O.UPG.KMSO.WS.A.0004.180217T1800Z-180218T1200Z/
/O.NEW.KMSO.WS.W.0008.180217T1800Z-180218T1200Z/
/O.CON.KMSO.WW.Y.0020.000000T0000Z-180217T1200Z/
Northern Clearwater Mountains-Southern Clearwater Mountains-
153 PM PST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
SATURDAY...
...WINTER STORM WARNING IN EFFECT FROM 10 AM SATURDAY TO 4 AM PST
SUNDAY...

* WHAT...Through tonight, snow expected. Total snow accumulations
  of 7 to 11 inches for elevations above 3000 feet, including Lolo
  Pass. 1 to 3 inches expected for elevations below 3000 feet,
  including Lowell. For Saturday into Sunday, heavy snow expected,
  especially above 3000 feet. Total snow accumulations of 12 to 18
  inches for elevations above 3000 feet. 1 to 2 inches below 
  3000 feet. 

* WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, 
  Dixie, Elk City, and Highway 12 Lowell to Lolo Pass.

* WHEN...For the Winter Storm Warning, from 10 AM Saturday to 4 
  AM PST Sunday. For the Winter Weather Advisory, until 4 AM PST 
  Saturday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Tree
  branches could fall. Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.


&&

$$

MTZ002-172200-
/O.UPG.KMSO.WS.A.0004.180217T2100Z-180219T0000Z/
/O.NEW.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
/O.CON.KMSO.WW.Y.0020.000000T0000Z-180217T0600Z/
West Glacier Region-
253 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...
...WINTER STORM WARNING IN EFFECT FROM 11 AM SATURDAY TO 5 PM MST
SUNDAY...

* WHAT...Snow will continue through tonight. Heavy snow and
  blowing snow expected Saturday and Sunday. Additional snow
  accumulations of 3 to 5 inches through tonight. Total snow
  accumulations Saturday through Sunday of 12 to 18 inches are
  expected. Gusty winds by Saturday afternoon will cause blowing
  and drifting snow and poor visibility. Blizzard conditions are
  likel, along with very icy conditions Saturday afternoon 
  through Sunday.
 
* WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan 
  Lake, Marias Pass, and Polebridge.

* WHEN...For the Winter Storm Warning, from 11 AM Saturday to 5 
  PM MST Sunday. For the Winter Weather Advisory, until 11 PM 
  MST this evening.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Tree branches could fall. Winds gusting as high as
  50 mph will cause widespread blowing and drifting snow. Wind
  chills as low as 30 below zero could cause frostbite on exposed
  skin in as little as 30 minutes. Be prepared for reduced 
  visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.


&&

$$

MTZ007-043-172200-
/O.UPG.KMSO.WS.A.0004.180218T0000Z-180219T0000Z/
/O.NEW.KMSO.WS.W.0008.180218T0000Z-180219T0000Z/
/O.CON.KMSO.WW.Y.0020.000000T0000Z-180217T1200Z/
Butte/Blackfoot Region-Potomac/Seeley Lake Region-
253 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...
...WINTER STORM WARNING IN EFFECT FROM 5 PM SATURDAY TO 5 PM MST
SUNDAY...

* WHAT...Snow and blowing snow expected this evening through early
  Saturday morning. Snow accumulations of 3 to 6 inches tonight
  are expected. Heavy snow and blowing snow expected Saturday 
  afternoon through Sunday. Total snow accumulations of 5 to 9 
  inches, with localized amounts up to 12 inches, are expected by 
  Sunday evening.

* WHERE...Butte, Georgetown Lake, Highway 12 Garrison to 
  Elliston, Homestake Pass, MacDonald Pass, Highway 200 Bonner 
  to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East 
  Missoula to Bearmouth.

* WHEN...For the Winter Storm Warning, from 5 PM Saturday to 5 
  PM MST Sunday. For the Winter Weather Advisory, until 5 AM MST 
  Saturday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. West
  winds gusting over 40 mph will cause areas of blowing and
  drifting snow Saturday. Easterly winds up to 50 mph will develop
  early Sunday morning, icy conditions and blizzard conditions are
  likely along east-west oriented portions of Highway 12, Highway
  200, and Interstate 90 during Sunday.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.


&&

$$

MTZ003-172200-
/O.UPG.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
/O.NEW.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
/O.EXB.KMSO.WW.Y.0020.180216T2153Z-180217T0600Z/
Flathead/Mission Valleys-
253 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 PM MST THIS
EVENING...
...WINTER STORM WARNING IN EFFECT FROM 11 AM SATURDAY TO 5 PM MST
SUNDAY...

* WHAT...Periods of moderate to heavy snow expected this afternoon
  and evening. Snow accumulations 2 to 4 inches are expected.
  Heavy snow and blowing snow expected Saturday and Sunday. Total
  snow accumulations of 8 to 12 inches are expected. Gusty winds 
  will develop Saturday evening. Blizzard conditions are likely 
  Saturday night through Sunday morning. A flash freeze of 
  roadways Saturday night may create very icy conditions. Travel 
  may become hazardous to impossible, especially through the 
  Flathead Valley and Badrock Canyon.

* WHERE...Flathead Lake, Flathead Valley, Mission Valley, and 
  Polson.

* WHEN...For the Winter Storm Warning, from 11 AM Saturday to 5 
  PM MST Sunday. For the Winter Weather Advisory, until 11 PM 
  MST this evening.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Winds gusting as high as 50 mph will cause
  widespread blowing and drifting snow. Trees branches may fall.
  Cold wind chills as low as 15 below zero could result in
  hypothermia if precautions are not taken. Be prepared for 
  reduced visibilities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.


&&

$$

MTZ001-172200-
/O.UPG.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
/O.NEW.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
Kootenai/Cabinet Region-
253 PM MST Fri Feb 16 2018

...WINTER STORM WARNING IN EFFECT FROM 11 AM SATURDAY TO 5 PM MST
SUNDAY...

* WHAT...Snow through this evening, heavy snow and blowing snow
  expected Saturday through Sunday. Total snow accumulations of 8
  to 12 inches are expected. Gusty winds Saturday evening through
  Sunday morning will cause blowing and drifting snow and poor 
  visibility. Travel may become hazardous.

* WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to 
  Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to 
  Whitefish.

* WHEN...From 11 AM Saturday to 5 PM MST Sunday.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Winds gusting as high as 40 mph will cause areas of
  blowing and drifting snow. Trees branches may fall. The cold 
  wind chills as low as 20 below zero could cause frostbite on 
  exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

IDZ009-010-172200-
/O.NEW.KMSO.WW.Y.0022.180218T0000Z-180219T0000Z/
Western Lemhi County-Eastern Lemhi County-
253 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM SATURDAY TO 5 PM
MST SUNDAY...

* WHAT...Snow and blowing snow expected. Total snow accumulations
  of 3 to 5 inches, with 10 to 14 inches Williams Creek and Lost
  Trail Pass, are expected.

* WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, 
  Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and 
  Salmon.

* WHEN...From 5 PM Saturday to 5 PM MST Sunday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. In 
  addition, areas of poor visibility are likely. Tree branches 
  could fall. Winds gusting as high as 45 mph will cause areas 
  of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing 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.

&&

$$

MTZ005-172200-
/O.EXT.KMSO.WW.Y.0021.180217T0000Z-180217T1800Z/
/O.CON.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Missoula/Bitterroot Valleys-
253 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 5 PM THIS AFTERNOON
TO 11 AM MST SATURDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SUNDAY AFTERNOON...

* WHAT...Snow expected. Heavy snow possible late this evening and
  again Saturday through Sunday. Snow accumulations of 1 to 4
  inches tonight are expected. For Saturday into Sunday, heavy
  snow and blowing snow possible, particularly from Stevensville
  north to Missoula. Total snow accumulations of 6 to 10 inches
  are possible from Stevensville north to Missoula. Total snow
  accumulations of 4 to 7 inches are possible from Stevensville 
  south. Gusty west winds develop by Saturday evening and gusty 
  east winds during Sunday morning, which could cause a period of 
  blowing and drifting snow and poor visibility. A flash freeze of
  roadways Saturday evening through Sunday morning may create 
  very icy conditions. Travel may become hazardous.

* WHERE...Missoula/Bitterroot Valleys.

* WHEN...For the Winter Weather Advisory, from 5 PM this 
  afternoon to 11 AM MST Saturday. For the Winter Storm Watch, 
  from Saturday morning through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be
  prepared for reduced visibilities at times. Significant 
  reductions in visibility are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant 
snow, sleet or ice accumulations that may impact travel. Continue 
to monitor the latest forecasts.

&&

$$

MTZ006-172200-
/O.CON.KMSO.WW.Y.0020.000000T0000Z-180217T1200Z/
/O.CON.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Bitterroot/Sapphire Mountains-
253 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SUNDAY AFTERNOON...

* WHAT...For tonight, snow expected. Total snow accumulations of 
  7 to 11 inches, including over Lolo Pass and Lost Trail Pass. 
  For Saturday through Sunday, heavy snow and blowing snow 
  possible. Travel may become difficult due to slick roads and low
  visibility. Total snow accumulations of 9 to 13 inches, 
  localized amounts up to 18 inches for Lolo Pass, are possible.

* WHERE...Bitterroot/Sapphire Mountains.

* WHEN...For the Winter Weather Advisory, until 5 AM MST 
  Saturday. For the Winter Storm Watch, from Saturday morning 
  through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. 
  Winds gusting as high as 35 mph will cause areas of blowing 
  and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant 
snow, sleet or ice accumulations that may impact travel. Continue 
to monitor the latest forecasts.

&&

$$
227 
WWUS45 KMSO 170556
WSWMSO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
1056 PM MST Fri Feb 16 2018

MTZ004-180600-
/O.EXP.KMSO.WW.Y.0020.000000T0000Z-180217T0600Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
Lower Clark Fork Region-
1056 PM MST Fri Feb 16 2018

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM SATURDAY TO
5 PM MST SUNDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS
EVENING...

* WHAT...Heavy snow returns during Saturday morning. Total snow 
  accumulations of 9 to 12 inches, with up to 2 feet possible over
  Lookout Pass, are expected. Gusty winds will begin early 
  Sunday, which will cause a period of blowing and drifting snow 
  and poor visibility. A flash freeze of roadways Sunday morning 
  may create very icy conditions. Travel may become hazardous. 

* WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, 
  Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to 
  Haugan.

* WHEN...For the Winter Storm Warning, from 11 AM Saturday to 5 
  PM MST Sunday. For the Winter Weather Advisory, at 11 PM MST 
  this evening.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Winds gusting as high as 40 mph will cause areas of
  blowing and drifting snow. Be prepared for reduced visibilities
  at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

MTZ002-180600-
/O.EXP.KMSO.WW.Y.0020.000000T0000Z-180217T0600Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
West Glacier Region-
1056 PM MST Fri Feb 16 2018

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM SATURDAY TO
5 PM MST SUNDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS
EVENING...

* WHAT...Heavy snow and blowing snow expected Saturday and 
  Sunday. Additional snow accumulations of 3 to 5 inches through 
  tonight. Total snow accumulations Saturday through Sunday of 12 
  to 18 inches are expected. Gusty winds by Saturday afternoon 
  will cause blowing and drifting snow and poor visibility. 
  Blizzard conditions are likely, along with very icy conditions 
  Saturday afternoon through Sunday.

* WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan 
  Lake, Marias Pass, and Polebridge.

* WHEN...For the Winter Storm Warning, from 11 AM Saturday to 5 
  PM MST Sunday. For the Winter Weather Advisory, at 11 PM MST 
  this evening.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Tree branches could fall. Winds gusting as high as
  50 mph will cause widespread blowing and drifting snow. Wind 
  chills as low as 30 below zero could cause frostbite on exposed 
  skin in as little as 30 minutes. Be prepared for reduced 
  visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

MTZ003-180600-
/O.EXP.KMSO.WW.Y.0020.000000T0000Z-180217T0600Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
Flathead/Mission Valleys-
1056 PM MST Fri Feb 16 2018

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM SATURDAY TO
5 PM MST SUNDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS
EVENING...

* WHAT...Heavy snow and blowing snow expected Saturday and 
  Sunday. Total snow accumulations of 8 to 12 inches are expected.
  Gusty winds will develop Saturday evening. Blizzard conditions 
  are likely Saturday night through Sunday morning. A flash freeze
  of roadways Saturday night may create very icy conditions. 
  Travel may become hazardous to impossible, especially through 
  the Flathead Valley and Badrock Canyon.

* WHERE...Flathead Lake, Flathead Valley, Mission Valley, and 
  Polson.

* WHEN...For the Winter Storm Warning, from 11 AM Saturday to 5 
  PM MST Sunday. For the Winter Weather Advisory, at 11 PM MST 
  this evening.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Winds gusting as high as 50 mph will cause
  widespread blowing and drifting snow. Trees branches may fall.
  Cold wind chills as low as 15 below zero could result in
  hypothermia if precautions are not taken. Be prepared for 
  reduced visibilities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

IDZ005-006-180600-
/O.CON.KMSO.WS.W.0008.180217T1800Z-180218T1200Z/
/O.CON.KMSO.WW.Y.0020.000000T0000Z-180217T1200Z/
Northern Clearwater Mountains-Southern Clearwater Mountains-
956 PM PST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
SATURDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM SATURDAY TO
4 AM PST SUNDAY...

* WHAT...Snow expected through Saturday morning. Total snow 
  accumulations of 7 to 11 inches for elevations above 3000 feet, 
  including Lolo Pass. 1 to 3 inches expected for elevations below
  3000 feet, including Lowell. For Saturday into Sunday, heavy 
  snow expected, especially above 3000 feet. Total snow 
  accumulations of 12 to 18 inches for elevations above 3000 feet.
  1 to 2 inches below 3000 feet. 

* WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, 
  Dixie, Elk City, and Highway 12 Lowell to Lolo Pass.

* WHEN...For the Winter Storm Warning, from 10 AM Saturday to 4 
  AM PST Sunday. For the Winter Weather Advisory, until 4 AM PST 
  Saturday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Tree 
  branches could fall. Winds gusting as high as 45 mph will 
  cause areas of blowing and drifting snow. Plan on slippery 
  road conditions. Be prepared for reduced visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

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.

&&

$$

MTZ007-043-180600-
/O.CON.KMSO.WS.W.0008.180218T0000Z-180219T0000Z/
/O.CON.KMSO.WW.Y.0020.000000T0000Z-180217T1200Z/
Butte/Blackfoot Region-Potomac/Seeley Lake Region-
1056 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM SATURDAY TO
5 PM MST SUNDAY...

* WHAT...Snow and blowing snow expected through early Saturday
  morning. Snow accumulations of 3 to 6 inches expected. Then, 
  heavy snow and blowing snow expected Saturday afternoon through 
  Sunday. Total snow accumulations of 5 to 9 inches, with 
  localized amounts up to 12 inches, are expected by Sunday 
  evening.

* WHERE...Butte, Georgetown Lake, Highway 12 Garrison to 
  Elliston, Homestake Pass, MacDonald Pass, Highway 200 Bonner 
  to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East 
  Missoula to Bearmouth.

* WHEN...For the Winter Storm Warning, from 5 PM Saturday to 5 
  PM MST Sunday. For the Winter Weather Advisory, until 5 AM MST 
  Saturday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. West
  winds gusting over 40 mph will cause areas of blowing and
  drifting snow Saturday. Easterly winds up to 50 mph will develop
  early Sunday morning, icy conditions and blizzard conditions are
  likely along east-west oriented portions of Highway 12, Highway
  200, and Interstate 90 during Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing 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.

&&

$$

MTZ001-180600-
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
Kootenai/Cabinet Region-
1056 PM MST Fri Feb 16 2018

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM SATURDAY TO
5 PM MST SUNDAY...

* WHAT...Heavy snow and blowing snow expected Saturday through 
  Sunday. Total snow accumulations of 8 to 12 inches are expected.
  Gusty winds Saturday evening through Sunday morning will cause 
  blowing and drifting snow and poor visibility. Travel may become
  hazardous.

* WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to 
  Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to 
  Whitefish.

* WHEN...From 11 AM Saturday to 5 PM MST Sunday.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Winds gusting as high as 40 mph will cause areas of
  blowing and drifting snow. Trees branches may fall. The cold 
  wind chills as low as 20 below zero could cause frostbite on 
  exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

MTZ006-180600-
/O.CON.KMSO.WW.Y.0020.000000T0000Z-180217T1200Z/
/O.CON.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Bitterroot/Sapphire Mountains-
1056 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SUNDAY AFTERNOON...

* WHAT...Snow expected through Saturday morning. Total snow 
  accumulations of 7 to 11 inches, including over Lolo Pass and 
  Lost Trail Pass. For Saturday through Sunday, heavy snow and 
  blowing snow possible. Travel may become difficult due to slick 
  roads and low visibility. Total snow accumulations of 9 to 13 
  inches, localized amounts up to 18 inches for Lolo Pass, are 
  possible.

* WHERE...Bitterroot/Sapphire Mountains.

* WHEN...For the Winter Weather Advisory, until 5 AM MST 
  Saturday. For the Winter Storm Watch, from Saturday morning 
  through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. 
  Winds gusting as high as 35 mph will cause areas of blowing 
  and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing 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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

MTZ005-180600-
/O.CON.KMSO.WW.Y.0021.000000T0000Z-180217T1800Z/
/O.CON.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Missoula/Bitterroot Valleys-
1056 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
SATURDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING
THROUGH SUNDAY AFTERNOON...

* WHAT...Snow expected through Saturday morning. Up to 1 inch of
  additional snow expected. For Saturday into Sunday, heavy snow 
  and blowing snow possible, particularly from Stevensville north 
  to Missoula. Total snow accumulations of 6 to 10 inches are 
  possible from Stevensville north to Missoula. Total snow 
  accumulations of 4 to 7 inches are possible from Stevensville 
  south. Gusty west winds develop by Saturday evening and gusty 
  east winds during Sunday morning, which could cause a period of 
  blowing and drifting snow and poor visibility. A flash freeze of
  roadways Saturday evening through Sunday morning may create 
  very icy conditions. Travel may become hazardous.
* WHERE...Missoula/Bitterroot Valleys.

* WHEN...For the Winter Weather Advisory, until 11 AM MST 
  Saturday. For the Winter Storm Watch, from Saturday morning 
  through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be
  prepared for reduced visibilities at times. Significant
  reductions in visibility are possible.

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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

IDZ009-010-180600-
/O.CON.KMSO.WW.Y.0022.180218T0000Z-180219T0000Z/
Western Lemhi County-Eastern Lemhi County-
1056 PM MST Fri Feb 16 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM SATURDAY
TO 5 PM MST SUNDAY...

* WHAT...Snow and blowing snow expected. Total snow accumulations
  of 3 to 5 inches, with 10 to 14 inches Williams Creek and Lost
  Trail Pass, are expected.

* WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, 
  Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and 
  Salmon.

* WHEN...From 5 PM Saturday to 5 PM MST Sunday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. In 
  addition, areas of poor visibility are likely. Tree branches 
  could fall. Winds gusting as high as 45 mph will cause areas 
  of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing 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.

&&

$$
913 
WWUS45 KMSO 171140
WSWMSO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
440 AM MST Sat Feb 17 2018

MTZ007-181145-
/O.EXP.KMSO.WW.Y.0020.000000T0000Z-180217T1200Z/
/O.EXB.KMSO.WW.Y.0022.180217T1800Z-180218T0000Z/
/O.CON.KMSO.WS.W.0008.180218T0000Z-180219T0000Z/
Butte/Blackfoot Region-
440 AM MST Sat Feb 17 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO
5 PM MST THIS AFTERNOON...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SUNDAY...


* WHAT...Snow and blowing snow expected. Initial snow
  accumulations of 2 to 5 inches expected through the afternoon. 
  Then, heavy snow and blowing snow expected this afternoon 
  through Sunday. Additional snow accumulations of 4 to 8 inches, 
  with localized amounts up to 12 inches, are expected by Sunday 
  evening.

* WHERE...Butte, Georgetown Lake, Highway 12 Garrison to 
  Elliston, Homestake Pass, and MacDonald Pass.

* WHEN...For the Winter Storm Warning, from 5 PM this afternoon to
  5 PM MST Sunday. For the Winter Weather Advisory, from 11 AM 
  this morning to 5 PM MST this afternoon.

* ADDITIONAL DETAILS...Plan on slippery road conditions. In 
  addition, areas of poor visibility are likely. Tree branches 
  could fall. Winds gusting as high as 45 mph will cause areas 
  of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

MTZ006-181145-
/O.UPG.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
/O.EXA.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
/O.EXT.KMSO.WW.Y.0020.000000T0000Z-180217T1800Z/
Bitterroot/Sapphire Mountains-
440 AM MST Sat Feb 17 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 AM MST THIS
MORNING...
...WINTER STORM WARNING IN EFFECT FROM 11 AM THIS MORNING TO 5 PM
MST SUNDAY...

* WHAT...Snow occurring this morning. Initial snow accumulations 
  of 6 to 10 inches, including over Lolo Pass and Lost Trail Pass.
  Then, this afternoon through Sunday, heavy snow and blowing 
  snow is expected. Travel will become difficult due to slick 
  roads and low visibility. Additional snow accumulations of 8 to 
  14 inches, localized amounts up to 18 inches for Lolo Pass, are 
  possible.

* WHERE...Bitterroot/Sapphire Mountains.

* WHEN...For the Winter Storm Warning, from 11 AM this morning 
  to 5 PM MST Sunday. For the Winter Weather Advisory, until 11 
  AM MST this morning.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. 
  Winds gusting as high as 35 mph will cause areas of blowing 
  and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

IDZ005-006-181145-
/O.EXT.KMSO.WW.Y.0020.000000T0000Z-180217T1800Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180218T1200Z/
Northern Clearwater Mountains-Southern Clearwater Mountains-
340 AM PST Sat Feb 17 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 10 AM PST THIS
MORNING...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING
TO 4 AM PST SUNDAY...

* WHAT...Snow occurring this morning. Initial snow accumulations 
  of 4 to 8 inches for elevations above 3000 feet, including Lolo 
  Pass. 1 to 3 inches expected for elevations below 3000 feet, 
  including Lowell. Then, additional heavy snow is expected late 
  this morning into Sunday, especially above 3000 feet. Total snow
  accumulations of 12 to 18 inches for elevations above 3000 
  feet. 1 to 2 inches below 3000 feet.

* WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, 
  Dixie, Elk City, and Highway 12 Lowell to Lolo Pass.

* WHEN...For the Winter Storm Warning, from 10 AM this morning 
  to 4 AM PST Sunday. For the Winter Weather Advisory, until 10 
  AM PST this morning.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Tree 
  branches could fall. Winds gusting as high as 45 mph will 
  cause areas of blowing and drifting snow. Plan on slippery 
  road conditions. Be prepared for reduced visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

MTZ004-181145-
/O.EXB.KMSO.WW.Y.0020.180217T1200Z-180217T1800Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
Lower Clark Fork Region-
440 AM MST Sat Feb 17 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST THIS
MORNING...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING
TO 5 PM MST SUNDAY...

* WHAT...Light to moderate snow occurring. Snow is expected to 
  intensify this afternoon. Total snow accumulations of 9 to 12 
  inches, with up to 2 feet possible over Lookout Pass, are 
  expected. Gusty winds will begin early Sunday, which will cause 
  a period of blowing and drifting snow and poor visibility. A 
  flash freeze of roadways Sunday morning may create very icy 
  conditions. Travel may become hazardous. 

* WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, 
  Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to 
  Haugan.

* WHEN...For the Winter Storm Warning, from 11 AM this morning 
  to 5 PM MST Sunday. For the Winter Weather Advisory, until 11 
  AM MST this morning.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Winds gusting as high as 40 mph will cause areas of
  blowing and drifting snow. Be prepared for reduced visibilities
  at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

MTZ003-181145-
/O.EXB.KMSO.WW.Y.0020.180217T1200Z-180217T1800Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
Flathead/Mission Valleys-
440 AM MST Sat Feb 17 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST THIS
MORNING...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING
TO 5 PM MST SUNDAY...

* WHAT...Snow increasing this morning. Heavy snow and blowing 
  snow expected this afternoon into Sunday. Total snow 
  accumulations of 8 to 12 inches are expected. Gusty winds will 
  develop Saturday evening. Blizzard conditions are likely 
  Saturday night through Sunday morning. A flash freeze of 
  roadways Saturday night may create very icy conditions. Travel 
  may become hazardous to impossible, especially through the 
  Flathead Valley and Badrock Canyon.

* WHERE...Flathead Lake, Flathead Valley, Mission Valley, and 
  Polson.

* WHEN...For the Winter Storm Warning, from 11 AM this morning 
  to 5 PM MST Sunday. For the Winter Weather Advisory, until 11 
  AM MST this morning.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Winds gusting as high as 50 mph will cause
  widespread blowing and drifting snow. Trees branches may fall.
  Cold wind chills as low as 15 below zero could result in
  hypothermia if precautions are not taken. Be prepared for
  reduced visibilities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

MTZ002-181145-
/O.EXB.KMSO.WW.Y.0020.180217T1200Z-180217T1800Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
West Glacier Region-
440 AM MST Sat Feb 17 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST THIS
MORNING...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING
TO 5 PM MST SUNDAY...

* WHAT...Snow increasing this morning. Heavy snow and blowing snow
  expected this afternoon into Sunday. Total snow accumulations
  today through Sunday of 12 to 18 inches are expected. Gusty
  winds will cause blowing and drifting snow and poor visibility.
  Blizzard conditions are likely, along with very icy conditions
  this afternoon through Sunday.

* WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan 
  Lake, Marias Pass, and Polebridge.

* WHEN...For the Winter Storm Warning, from 11 AM this morning 
  to 5 PM MST Sunday. For the Winter Weather Advisory, until 11 
  AM MST this morning.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Tree branches could fall. Winds gusting as high as
  50 mph will cause widespread blowing and drifting snow. Wind
  chills as low as 30 below zero could cause frostbite on exposed
  skin in as little as 30 minutes. Be prepared for reduced
  visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

MTZ001-181145-
/O.EXB.KMSO.WW.Y.0020.180217T1200Z-180217T1800Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
Kootenai/Cabinet Region-
440 AM MST Sat Feb 17 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST THIS
MORNING...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING
TO 5 PM MST SUNDAY...

* WHAT...Snow increasing this morning. Heavy snow and blowing snow
  expected this afternoon through Sunday. Total snow accumulations
  of 8 to 14 inches are expected. Gusty winds this evening through
  Sunday morning will cause blowing and drifting snow and poor
  visibility.

* WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to 
  Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to 
  Whitefish.

* WHEN...For the Winter Storm Warning, from 11 AM this morning 
  to 5 PM MST Sunday. For the Winter Weather Advisory, until 11 
  AM MST this morning.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Winds gusting as high as 40 mph will cause areas of
  blowing and drifting snow. Trees branches may fall. The cold
  wind chills as low as 20 below zero could cause frostbite on
  exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

MTZ043-181145-
/O.EXT.KMSO.WW.Y.0020.000000T0000Z-180218T0000Z/
/O.CON.KMSO.WS.W.0008.180218T0000Z-180219T0000Z/
Potomac/Seeley Lake Region-
440 AM MST Sat Feb 17 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SUNDAY...

* WHAT...Snow and blowing snow expected through this afternoon.
  Then, heavy snow and blowing snow expected this evening through
  Sunday. Total snow accumulations of 8 to 12 inches, with
  localized amounts up to 18 inches, are expected by Sunday
  evening.

* WHERE...Butte, Georgetown Lake, Highway 12 Garrison to 
  Elliston, Homestake Pass, MacDonald Pass, Highway 200 Bonner 
  to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East 
  Missoula to Bearmouth.

* WHEN...For the Winter Storm Warning, from 5 PM this afternoon 
  to 5 PM MST Sunday. For the Winter Weather Advisory, until 5 
  PM MST this afternoon.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Winds gusting as high as 40 mph will cause areas of
  blowing and drifting snow. Trees branches may fall. Be prepared
  for reduced visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow and blowing snow means severe
winter weather conditions will make travel very hazardous or
impossible. 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.

&&

$$

MTZ005-181145-
/O.CON.KMSO.WW.Y.0021.000000T0000Z-180217T1800Z/
/O.CON.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
Missoula/Bitterroot Valleys-
440 AM MST Sat Feb 17 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS
MORNING...
...WINTER STORM WATCH REMAINS IN EFFECT FROM 11 AM MST THIS
MORNING THROUGH SUNDAY AFTERNOON...

* WHAT...Snow expected through this morning. Then, heavy snow and
  blowing snow is possible this afternoon into Sunday. Total snow
  accumulations of 5 to 10 inches are possible from Stevensville
  north to Missoula. Total snow accumulations of 3 to 7 inches are
  possible from Stevensville south. Gusty west winds develop by
  this evening and gusty east winds during Sunday morning, which
  could cause a period of blowing and drifting snow and poor
  visibility. A flash freeze of roadways Saturday evening through
  Sunday morning may create very icy conditions. 

* WHERE...Missoula/Bitterroot Valleys.

* WHEN...For the Winter Weather Advisory, until 11 AM MST 
  Saturday. For the Winter Storm Watch, from Saturday morning 
  through Sunday afternoon.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be
  prepared for reduced visibilities at times. Travel may become
  hazardous.

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.

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

&&

$$

IDZ009-010-181145-
/O.CON.KMSO.WW.Y.0022.180218T0000Z-180219T0000Z/
Western Lemhi County-Eastern Lemhi County-
440 AM MST Sat Feb 17 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SUNDAY...

* WHAT...Snow and blowing snow expected. Total snow accumulations
  of 2 to 5 inches, with 8 to 14 inches Williams Creek and Lost
  Trail Pass, are expected.

* WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, 
  Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and 
  Salmon.

* WHEN...From 5 PM Saturday to 5 PM MST Sunday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. In 
  addition, areas of poor visibility are likely. Tree branches 
  could fall. Winds gusting as high as 45 mph will cause areas 
  of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing 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.

&&

$$
576 
WWUS45 KMSO 171753
WSWMSO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
1053 AM MST Sat Feb 17 2018

MTZ005-181800-
/O.EXP.KMSO.WW.Y.0021.000000T0000Z-180217T1800Z/
/O.UPG.KMSO.WS.A.0004.180217T1800Z-180219T0000Z/
/O.EXA.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
Missoula/Bitterroot Valleys-
1053 AM MST Sat Feb 17 2018

...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST SUNDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS
MORNING...

* WHAT...Snow occurring mainly from Stevensville through Missoula.
  Then, heavy snow and blowing snow expected this afternoon into
  Sunday. Snow will change to rain in the Bitterroot Valley and
  briefly in the Missoula Valley into this evening. Total snow
  accumulations of 6 to 10 inches from Stevensville north to
  Missoula with isolated amounts of 12 inches. Total snow
  accumulations of 3 to 7 inches are possible from Stevensville
  south. Gusty west winds develop by this evening and gusty east
  winds during Sunday morning, which will cause period of blowing
  and drifting snow and poor visibility. A freeze-up of roadways 
  Saturday evening through Sunday morning will create very icy 
  conditions.

* WHERE...Missoula/Bitterroot Valleys.

* WHEN...For the Winter Storm Warning, from 11 AM this morning to
  5 PM MST Sunday.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Tree branches could fall. Winds gusting 30 to 40 mph
  will cause widespread blowing and drifting snow and very icy
  conditions. Wind chills of 10 below zero could cause frostbite 
  on exposed skin in as little as 30 minutes during Sunday. Be 
  prepared for reduced visibilities at times.


&&

$$

IDZ005-006-181200-
/O.EXP.KMSO.WW.Y.0020.000000T0000Z-180217T1800Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180218T1200Z/
Northern Clearwater Mountains-Southern Clearwater Mountains-
953 AM PST Sat Feb 17 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST SUNDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 10 AM PST THIS
MORNING...

* WHAT...Snow occurring. Heavy snow is expected into Sunday, 
  especially above 3000 feet. Total snow accumulations of 12 to 18
  inches for elevations above 3000 feet. 1 to 2 inches below 3000
  feet.

* WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, 
  Dixie, Elk City, and Highway 12 Lowell to Lolo Pass.

* WHEN...For the Winter Storm Warning, from 10 AM this morning to
  4 AM PST Sunday. 

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Tree 
  branches could fall. Winds gusting as high as 45 mph will 
  cause areas of blowing and drifting snow. Plan on slippery 
  road conditions. Be prepared for reduced visibilities at times.


&&

$$

MTZ006-181800-
/O.EXP.KMSO.WW.Y.0020.000000T0000Z-180217T1800Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
Bitterroot/Sapphire Mountains-
1053 AM MST Sat Feb 17 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS
MORNING...

* WHAT...Snow occurring. Initial snow accumulations of 6 to 10 
  inches, including over Lolo Pass and Lost Trail Pass. Then, this
  afternoon through Sunday, heavy snow and blowing snow is 
  expected. Travel will become difficult due to slick roads and 
  low visibility. Additional snow accumulations of 8 to 14 inches,
  localized amounts up to 18 inches for Lolo Pass, are possible.

* WHERE...Bitterroot/Sapphire Mountains.

* WHEN...For the Winter Storm Warning, from 11 AM this morning to
  5 PM MST Sunday. 

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Winds
  gusting as high as 50 mph will cause areas of blowing and 
  drifting snow.

&&

$$

MTZ004-181800-
/O.EXP.KMSO.WW.Y.0020.000000T0000Z-180217T1800Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
Lower Clark Fork Region-
1053 AM MST Sat Feb 17 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS
MORNING...

* WHAT...Snow occurring. Snow is expected to intensify this
  afternoon. Total snow accumulations of 9 to 12 inches, with up
  to 2 feet possible over Lookout Pass, are expected. Gusty west
  winds will begin this afternoon with east winds early Sunday,
  which will cause periods of blowing and drifting snow and poor 
  visibility. A flash freeze of roadways this evening through 
  Sunday morning will create very icy conditions. Travel may 
  become hazardous.

* WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, 
  Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to 
  Haugan.

* WHEN...For the Winter Storm Warning, from 11 AM this morning to
  5 PM MST Sunday. 

* ADDITIONAL DETAILS...Travel will be very difficult to 
  impossible. Winds gusting as high as 40 mph will cause areas 
  of blowing and drifting snow. Be prepared for reduced 
  visibilities at times.


&&

$$

MTZ003-181800-
/O.EXP.KMSO.WW.Y.0020.000000T0000Z-180217T1800Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
Flathead/Mission Valleys-
1053 AM MST Sat Feb 17 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS
MORNING...

* WHAT...Snow occurring. Heavy snow and blowing snow expected 
  this afternoon into Sunday. Total snow accumulations of 8 to 12 
  inches are expected. Gusty winds will develop this evening. 
  Blizzard conditions are likely tonight through Sunday morning. A
  flash freeze of roadways tonight will create very icy 
  conditions. Travel may become hazardous to impossible, 
  especially through the Flathead Valley and Badrock Canyon.

* WHERE...Flathead Lake, Flathead Valley, Mission Valley, and 
  Polson.

* WHEN...For the Winter Storm Warning, from 11 AM this morning to
  5 PM MST Sunday. 

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Winds gusting as high as 50 mph will cause
  widespread blowing and drifting snow. Trees branches may fall.
  Cold wind chills as low as 20 below zero could result in 
  hypothermia if precautions are not taken. Be prepared for 
  reduced visibilities.


&&

$$

MTZ002-181800-
/O.EXP.KMSO.WW.Y.0020.000000T0000Z-180217T1800Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
West Glacier Region-
1053 AM MST Sat Feb 17 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS
MORNING...

* WHAT...Snow occurring. Heavy snow and blowing snow expected 
  this afternoon into Sunday. Total snow accumulations today 
  through Sunday of 12 to 18 inches are expected. Gusty winds will
  cause blowing and drifting snow and poor visibility. Blizzard 
  conditions are likely, along with very icy conditions this 
  afternoon through Sunday.

* WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan 
  Lake, Marias Pass, and Polebridge.

* WHEN...For the Winter Storm Warning, from 11 AM this morning to
  5 PM MST Sunday. 

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Tree branches could fall. Winds gusting as high as
  50 mph will cause widespread blowing and drifting snow. Wind
  chills as low as 30 below zero could cause frostbite on exposed
  skin in as little as 30 minutes. Be prepared for reduced
  visibilities.


&&

$$

MTZ001-181800-
/O.EXP.KMSO.WW.Y.0020.000000T0000Z-180217T1800Z/
/O.CON.KMSO.WS.W.0008.180217T1800Z-180219T0000Z/
Kootenai/Cabinet Region-
1053 AM MST Sat Feb 17 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS
MORNING...

* WHAT...Snow occurring. Heavy snow and blowing snow expected 
  this afternoon through Sunday. Total snow accumulations of 8 to 
  14 inches are expected. Gusty winds this evening through Sunday 
  morning will cause blowing and drifting snow and poor 
  visibility.

* WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to 
  Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to 
  Whitefish.

* WHEN...For the Winter Storm Warning, from 11 AM this morning to
  5 PM MST Sunday. 

* ADDITIONAL DETAILS...Travel will be very difficult to 
  impossible. Winds gusting as high as 40 mph will cause areas 
  of blowing and drifting snow. Trees branches may fall. The 
  cold wind chills as low as 20 below zero could cause frostbite 
  on exposed skin in as little as 30 minutes.


&&

$$

MTZ043-181800-
/O.CON.KMSO.WS.W.0008.180218T0000Z-180219T0000Z/
/O.CON.KMSO.WW.Y.0020.000000T0000Z-180218T0000Z/
Potomac/Seeley Lake Region-
1053 AM MST Sat Feb 17 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SUNDAY...

* WHAT...Snow occurring. Then, heavy snow and blowing snow 
  expected this evening through Sunday. Total snow accumulations 
  of 8 to 12 inches, with localized amounts up to 18 inches, are 
  expected by Sunday evening.

* WHERE...Highway 200 Bonner to Greenough, Highway 83 Seeley Lake
  to Condon, and I-90 East Missoula to Bearmouth.

* WHEN...For the Winter Storm Warning, from 5 PM this afternoon 
  to 5 PM MST Sunday. For the Winter Weather Advisory, until 5 
  PM MST this afternoon.

* ADDITIONAL DETAILS...Travel will be very difficult to 
  impossible. Winds gusting as high as 40 mph will cause areas 
  of blowing and drifting snow. Trees branches may fall. Be 
  prepared for reduced visibilities at times.

&&

$$

MTZ007-181800-
/O.CON.KMSO.WS.W.0008.180218T0000Z-180219T0000Z/
/O.CON.KMSO.WW.Y.0022.180217T1800Z-180218T0000Z/
Butte/Blackfoot Region-
1053 AM MST Sat Feb 17 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SUNDAY...

* WHAT...Snow and blowing snow expected. Initial snow
  accumulations of 2 to 5 inches expected through the afternoon.
  Then, heavy snow and blowing snow expected this afternoon
  through Sunday. Additional snow accumulations of 4 to 8 inches,
  with localized amounts up to 12 inches, are expected by Sunday
  evening.

* WHERE...Butte, Georgetown Lake, Highway 12 Garrison to 
  Elliston, Homestake Pass, and MacDonald Pass.

* WHEN...For the Winter Storm Warning, from 5 PM this afternoon 
  to 5 PM MST Sunday. For the Winter Weather Advisory, from 11 
  AM this morning to 5 PM MST this afternoon.

* ADDITIONAL DETAILS...Plan on slippery road conditions. In
  addition, areas of poor visibility are likely. Tree branches
  could fall. Winds gusting as high as 50 mph will cause areas of
  blowing and drifting snow.

&&

$$

IDZ009-010-181800-
/O.CON.KMSO.WW.Y.0022.180218T0000Z-180219T0000Z/
Western Lemhi County-Eastern Lemhi County-
1053 AM MST Sat Feb 17 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SUNDAY...

* WHAT...Snow and blowing snow expected. Total snow 
  accumulations of 2 to 5 inches, with 8 to 14 inches Williams 
  Creek and Lost Trail Pass, are expected.

* WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, 
  Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and 
  Salmon.

* WHEN...From 5 PM Saturday to 5 PM MST Sunday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. In 
  addition, areas of poor visibility are likely. Tree branches 
  could fall. Winds gusting as high as 45 mph will cause areas 
  of blowing and drifting snow.

&&

$$

What forecasters said that day

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

NWS Missoula, MT wrote its last area forecast discussion before this winter weather advisory went out at Feb 15, 3:05 PM MST, 13 minutes earlier.

Area forecast discussion, Feb 15, 3:05 PM MST, 13 minutes before
Area Forecast Discussion
National Weather Service Missoula MT
305 PM MST Thu Feb 15 2018

*** MAJOR WINTER STORM FOR WESTERN MONTANA THIS WEEKEND ***
*** HEAVY SNOW FOR NORTHWEST MONTANA ON SATURDAY ***

.DISCUSSION...Light snow showers linger this afternoon but are
expected to decrease this evening. Snow returns to north-central
Idaho and along the ID/MT border by early Friday morning.
Northwest Montana will again see snow during Friday and west-
central and southwest Montana are expected to see snow during
Friday evening. There has been consistency for the highest snow
rates to be during Friday evening and into the overnight under
snow bands. I-90, Highway 12, Highway 200, and Highway 93 near
Missoula are most likely to see travel impacts due to moderate
snow into Friday night.

The main impact producing weather system is still on track to
bring snow, wind, and quickly dropping temperatures Saturday
through Sunday. Saturday will have mild temperatures with west
winds and either snow or a rain snow mix, but an arctic cold
front will move through the region beginning Saturday afternoon in
northwest Montana and the rest of western Montana by Sunday
morning.

Temperatures will quickly drop from the 30s into the 20s and teens
and winds will become very gusty. The combination of moderate to
heavy snow, quickly dropping temperatures, and gusty
north/east winds will create potentially dangerous to impossible
travel conditions by Sunday morning. The blowing and drifting
snow with very low visibility are very likely with the worst
conditions expected to be in northwest Montana, particularity in
the Flathead/Mission valleys and the Highway 2 corridor. Highway
12/200 east of Missoula, and the I-90 corridor will also have a
combination of heavy snow and blowing and drifting snow. Gusty
easterly winds and continue snow will keep blowing and drifting
snow at least through Sunday night, but the poor conditions may
remain through Monday morning.

Cold temperatures and very cold wind chills of negative 15 to
negative 25 degrees will be common by Sunday night and the coldest
locations, along the divide, may see wind chills as cold as
negative 40. Winds decrease and the rest of the week will be cold
with temperatures below average.

&&

.AVIATION...Snow showers will linger into this afternoon before
decreasing during this evening. The next weather system moves into
the region tonight, first spreading low ceilings and snow into
north-central Idaho, followed by northwest Montana. The most
intense snowfall is possible during Friday evening where model
time-heights are showing favorable profiles for strong snow bands
from KMSO to KBTM. Snow bands and showers will linger into Friday
night.

A major winter storm is likely in western Montana Saturday and
Sunday, starting with moderate to heavy snow and gusty west winds,
before becoming much colder with gusty easterly winds, and blowing
snow with an arctic front.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...Winter Weather Advisory from 2 PM Friday to 5 AM MST Saturday
     Butte/Blackfoot Region...Potomac/Seeley Lake Region.

     Winter Storm Watch from Saturday afternoon through Sunday
     afternoon Butte/Blackfoot Region...Potomac/Seeley Lake
     Region.

     Winter Weather Advisory from 2 PM Friday to 5 AM MST Saturday
     Bitterroot/Sapphire Mountains.

     Winter Storm Watch from Saturday morning through Sunday
     afternoon Bitterroot/Sapphire Mountains.

     Winter Weather Advisory from 5 AM to 11 PM MST Friday Lower
     Clark Fork Region.

     Winter Storm Watch from Saturday morning through Sunday
     afternoon Lower Clark Fork Region.

     Winter Weather Advisory from 5 PM Friday to 5 AM MST Saturday
     Missoula/Bitterroot Valleys.

     Winter Storm Watch from Saturday morning through Sunday
     afternoon Missoula/Bitterroot Valleys.

     Winter Storm Watch from Saturday morning through Sunday
     afternoon Flathead/Mission Valleys.

     Winter Weather Advisory from 5 AM to 11 PM MST Friday West
     Glacier Region.

     Winter Storm Watch from Saturday afternoon through Sunday
     afternoon West Glacier Region.

     Winter Storm Watch from Saturday morning through Sunday
     afternoon Kootenai/Cabinet Region.

ID...     Winter Storm Watch from Saturday morning through late Saturday
     night Northern Clearwater Mountains...Southern Clearwater
     Mountains.

     Winter Weather Advisory from 4 AM to 1 PM PST Friday Lower Hells
     Canyon/Salmon River Region.

     Winter Weather Advisory from 4 AM to 1 PM PST Friday
     Orofino/Grangeville Region.

     Winter Weather Advisory from 4 AM Friday to 4 AM PST Saturday
     Northern Clearwater Mountains...Southern Clearwater
     Mountains.

&&

In the hours before

Local storm report, Feb 15, 11:03 AM MST, 4 hours 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
1103 AM MST THU FEB 15 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1103 AM     SNOW             3 ENE GRANGEVILLE       45.94N 116.06W
02/15/2018  E4.0 INCH        IDAHO              ID   DEPT OF HIGHWAYS

            4 INCHES OVERNIGHT.

&&
Local storm report, Feb 15, 11:05 AM MST, 4 hours 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
1105 AM MST THU FEB 15 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1104 AM     SNOW             6 NNE WHITE BIRD        45.84N 116.24W
02/15/2018  E7.0 INCH        IDAHO              ID   DEPT OF HIGHWAYS

            SNOW FELL OVER WHITE BIRD HILL YESTERDAY
            EVENING AND THE OVERNIGHT HOURS.

&&

The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 14, 7:38 PM MSTWinter Storm WarningMSOFlathead, Lake, Sanders8 hr
Feb 15, 3:18 PM MSTWinter Storm WatchMSODeer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more44 hr
Feb 15, 3:18 PM MSTWinter Weather AdvisoryMSODeer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more50 hr

Nearby

Winter Weather Advisories in Montana, 2018Every winter weather advisory in 2018

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.