Winter Weather Advisory 71, NWS Missoula, MT

121 
WWUS45 KMSO 182138
WSWMSO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
238 PM MST Sat Dec 18 2021

IDZ005-192145-
/O.UPG.KMSO.WS.A.0008.211219T0600Z-211220T1200Z/
/O.EXB.KMSO.WS.W.0012.211219T0600Z-211220T1200Z/
/O.CON.KMSO.WW.Y.0071.000000T0000Z-211219T0600Z/
Northern Clearwater Mountains-
138 PM PST Sat Dec 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO 4 AM
PST MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. Total
  snow accumulations of 12 to 18 inches. For the Winter Weather 
  Advisory, snow. Snow accumulations of 1 to 3 inches.

* WHERE...Elk River, Highway 11 Pierce to Headquarters, and 
  Pierce.

* WHEN...For the Winter Storm Warning, from 10 PM this evening 
  to 4 AM PST Monday. For the Winter Weather Advisory, until 10 
  PM PST this evening.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling. 

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

&&

$$

IDZ006-192145-
/O.EXB.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
/O.CON.KMSO.WW.Y.0071.000000T0000Z-211219T0600Z/
Southern Clearwater Mountains-
138 PM PST Sat Dec 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...WINTER STORM WARNING IN EFFECT FROM 4 AM SUNDAY TO 4 AM PST
MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. Total
  snow accumulations of 4 to 8 inches at low elevations including
  Lowell, and close to 2 feet near Lolo Pass. For the Winter 
  Weather Advisory, snow. Snow accumulations of 1 to 3 inches. 

* WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass.

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

* IMPACTS...Travel could be affected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling. 

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

&&

$$

MTZ006-192145-
/O.EXB.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
Bitterroot/Sapphire Mountains-
238 PM MST Sat Dec 18 2021

...WINTER STORM WARNING IN EFFECT FROM 5 AM SUNDAY TO 5 AM MST
MONDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 12
  inches, and close to 2 feet of snow for Lolo Pass.

* WHERE...Lolo Pass, and Bitterroot/Sapphire Mountains.

* WHEN...From 5 AM Sunday to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ001-192145-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
Kootenai/Cabinet Region-
238 PM MST Sat Dec 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 5 to 10 inches in the valleys, 9 to 18 inches 
  in the Purcell Mountains and 18 to 30 inches in the Cabinet 
  Mountains. Ice accumulations of a light glaze. Sunday morning 
  valley precipitation is forecast to lighten up and may change 
  to freezing rain or drizzle. Snow will return over night 
  Sunday.

* 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 this morning to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ002-192145-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
West Glacier Region-
238 PM MST Sat Dec 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy mixed precipitation expected. Total snow
  accumulations of 6 to 8 inches in the valleys and 6 to 12 
  inches on the mountain passes, with accumulations reaching 12 to
  18 inches on the higher terrain. Ice accumulations of a light 
  glaze. Blowing snow is also expected. Winds gusting as high as 
  50 mph near Marias Pass.

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

* WHEN...From 11 AM Saturday to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult. The cold wind chills 
  as low as 15 below zero could result in hypothermia if 
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ004-192145-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
Lower Clark Fork Region-
238 PM MST Sat Dec 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy mixed precipitation expected. Total snow
  accumulations of 4 to 7 inches along I-90 St. Regis to Huson 
  and Highway 200 corridor, 6 to 15 inches from St. Regis to 
  Lookout Pass, 16 to 24 inches over Lookout Pass. Ice 
  accumulations of a light glaze possible in the lower elevations.

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

* WHEN...From 11 AM this morning to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ005-192145-
/O.NEW.KMSO.WW.Y.0072.211219T1200Z-211219T1800Z/
/O.NEW.KMSO.WS.A.0009.211219T1800Z-211220T1200Z/
Missoula/Bitterroot Valleys-
238 PM MST Sat Dec 18 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TO 11 AM MST
SUNDAY...
...WINTER STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY
MORNING...

* WHAT...For the Winter Weather Advisory, snow expected. Total
  snow accumulations of 1 to 2 inches. For the Winter Storm Watch,
  heavy snow possible. Total snow accumulations of 4 to 7 inches
  possible and east winds gusting up to 30 mph Sunday afternoon or
  evening.

* WHERE...Missoula/Bitterroot Valleys.

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

* IMPACTS...Travel could be affected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Monitor the latest forecasts for updates on this situation. 

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

&&

$$

MTZ007-043-192145-
/O.NEW.KMSO.WW.Y.0072.211219T1200Z-211219T1800Z/
/O.NEW.KMSO.WS.A.0009.211219T1800Z-211220T1200Z/
Butte/Blackfoot Region-Potomac/Seeley Lake Region-
238 PM MST Sat Dec 18 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TO 11 AM MST
SUNDAY...
...WINTER STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH LATE
SUNDAY NIGHT...

* WHAT...For the Winter Weather Advisory, snow expected. Total
  snow accumulations of 1 to 3 inches. For the Winter Storm Watch,
  heavy snow possible. Total snow accumulations of 5 to 8 inches
  possible north of Interstate 90.

* WHERE...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 5 AM to 11 AM MST 
  Sunday. For the Winter Storm Watch, from Sunday morning 
  through late Sunday night.

* IMPACTS...Travel could be affected. Patchy blowing snow could 
  significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Monitor the latest forecasts for updates on this situation. 

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

&&

$$

IDZ007-192145-
/O.NEW.KMSO.WW.Y.0072.211219T1200Z-211220T1200Z/
Orofino/Grangeville Region-
138 PM PST Sat Dec 18 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM SUNDAY TO 4 AM PST
MONDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations of
  5 to 7 inches for Grangeville and vicinity, 2 to 4 for the lower
  elevations, and ice accumulations of a light glaze. Patchy
  blowing snow.

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

* WHEN...From 4 AM Sunday to 4 AM PST Monday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

&&

$$

IDZ008-192145-
/O.NEW.KMSO.WW.Y.0072.211219T1200Z-211220T1200Z/
Lower Hells Canyon/Salmon River Region-
138 PM PST Sat Dec 18 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM SUNDAY TO 4 AM PST
MONDAY ABOVE 3500 FEET...

* WHAT...Snow expected above 3500 feet. Total snow accumulations
  of 5 to 7 inches for Whitebird Hill. Winds gusting as high as 
  25 mph.

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

* WHEN...From 4 AM Sunday to 4 AM PST Monday.

* IMPACTS...Travel could be affected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

&&

$$

MTZ003-192145-
/O.EXT.KMSO.WW.Y.0071.000000T0000Z-211220T1200Z/
Flathead/Mission Valleys-
238 PM MST Sat Dec 18 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Snow. Snow accumulations of 3 to 6 inches. Wind shift to
  north and northeasterly with dropping temperatures and blowing 
  snow by Sunday afternoon in the Flathead Valley and Sunday 
  afternoon or evening in the Mission Valley.

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

* WHEN...Until 5 AM MST Monday.

* IMPACTS...Travel could be affected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

&&

$$

485 
WWUS45 KMSO 190024
WSWMSO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
524 PM MST Sat Dec 18 2021

MTZ003-200030-
/O.UPG.KMSO.WW.Y.0071.000000T0000Z-211220T1200Z/
/O.EXB.KMSO.WS.W.0012.211219T0400Z-211219T1500Z/
/O.EXB.KMSO.WW.Y.0072.211219T1500Z-211220T1200Z/
Flathead/Mission Valleys-
524 PM MST Sat Dec 18 2021

...WINTER STORM WARNING IN EFFECT FROM 9 PM THIS EVENING TO 8 AM
MST SUNDAY...
...WINTER WEATHER ADVISORY IN EFFECT FROM 8 AM SUNDAY TO 5 AM MST
MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. Total
  snow accumulations of 2 to 5 inches. Low visibility, hazardous
  travel conditions with blowing snow in the Flathead Valley. For
  the Winter Weather Advisory, snow expected. Total snow 
  accumulations of up to 2 inches.

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

* WHEN...For the Winter Storm Warning, from 9 PM this evening to 
  8 AM MST Sunday. For the Winter Weather Advisory, from 8 AM 
  Sunday to 5 AM MST Monday.

* IMPACTS...Travel could be affected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling. 

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

&&

$$

IDZ007-200030-
/O.EXB.KMSO.WS.W.0012.211219T0400Z-211219T2000Z/
/O.EXT.KMSO.WW.Y.0072.211219T2000Z-211220T1200Z/
Orofino/Grangeville Region-
424 PM PST Sat Dec 18 2021

...WINTER STORM WARNING IN EFFECT FROM 8 PM THIS EVENING TO NOON
PST SUNDAY...
...WINTER WEATHER ADVISORY NOW IN EFFECT FROM NOON SUNDAY TO 4 AM
PST MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. Total
  snow accumulations of 4 to 7 inches. For the Winter Weather 
  Advisory, mixed precipitation expected. Total snow accumulations
  of up to 2 inches and ice accumulations of a light glaze.

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

* WHEN...For the Winter Storm Warning, from 8 PM this evening to 
  noon PST Sunday. For the Winter Weather Advisory, from noon 
  Sunday to 4 AM PST Monday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling. 

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

&&

$$

IDZ006-200030-
/O.CON.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
/O.CON.KMSO.WW.Y.0071.000000T0000Z-211219T0600Z/
Southern Clearwater Mountains-
424 PM PST Sat Dec 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM SUNDAY TO
4 AM PST MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. 
  Total snow accumulations of 4 to 8 inches at low elevations 
  including Lowell, and close to 2 feet near Lolo Pass. For the 
  Winter Weather Advisory, snow. Snow accumulations of 1 to 3 
  inches.

* WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass.

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

* IMPACTS...Travel could be affected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling.

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

&&

$$

IDZ005-200030-
/O.CON.KMSO.WS.W.0012.211219T0600Z-211220T1200Z/
/O.CON.KMSO.WW.Y.0071.000000T0000Z-211219T0600Z/
Northern Clearwater Mountains-
424 PM PST Sat Dec 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 4 AM PST MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. 
  Total snow accumulations of 12 to 18 inches. For the Winter 
  Weather Advisory, snow. Snow accumulations of 1 to 3 inches.

* WHERE...Elk River, Highway 11 Pierce to Headquarters, and 
  Pierce.

* WHEN...For the Winter Storm Warning, from 10 PM this evening 
  to 4 AM PST Monday. For the Winter Weather Advisory, until 10 
  PM PST this evening.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling.

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

&&

$$

MTZ001-200030-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
Kootenai/Cabinet Region-
524 PM MST Sat Dec 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 5 to 10 inches in the valleys, 9 to 18 inches 
  in the Purcell Mountains and 18 to 30 inches in the Cabinet 
  Mountains. Ice accumulations of a light glaze. Sunday morning 
  valley precipitation is forecast to lighten up and may change 
  to freezing rain or drizzle. Snow will return over night 
  Sunday.

* 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 this morning to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ002-200030-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
West Glacier Region-
524 PM MST Sat Dec 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 6 to 8 inches in the valleys and 6 to 12 
  inches on the mountain passes, with accumulations reaching 12 
  to 18 inches on the higher terrain. Ice accumulations of a 
  light glaze. Blowing snow is also expected. Winds gusting as 
  high as 50 mph near Marias Pass.

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

* WHEN...From 11 AM Saturday to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult. The cold wind chills 
  as low as 15 below zero could result in hypothermia if 
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ004-200030-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
Lower Clark Fork Region-
524 PM MST Sat Dec 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 4 to 7 inches along I-90 St. Regis to Huson 
  and Highway 200 corridor, 6 to 15 inches from St. Regis to 
  Lookout Pass, 16 to 24 inches over Lookout Pass. Ice 
  accumulations of a light glaze possible in the lower 
  elevations.

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

* WHEN...From 11 AM this morning to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ006-200030-
/O.CON.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
Bitterroot/Sapphire Mountains-
524 PM MST Sat Dec 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM SUNDAY TO
5 AM MST MONDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 
  12 inches, and close to 2 feet of snow for Lolo Pass.

* WHERE...Lolo Pass, and Bitterroot/Sapphire Mountains.

* WHEN...From 5 AM Sunday to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ005-200030-
/O.CON.KMSO.WW.Y.0072.211219T1200Z-211219T1800Z/
/O.CON.KMSO.WS.A.0009.211219T1800Z-211220T1200Z/
Missoula/Bitterroot Valleys-
524 PM MST Sat Dec 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM TO 11 AM
MST SUNDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY MORNING
THROUGH LATE SUNDAY NIGHT...

* WHAT...For the Winter Weather Advisory, snow expected. Total 
  snow accumulations of 1 to 2 inches. For the Winter Storm 
  Watch, heavy snow possible. Total snow accumulations of 4 to 7 
  inches possible and east winds gusting up to 30 mph Sunday 
  afternoon or evening.

* WHERE...Missoula/Bitterroot Valleys.

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

* IMPACTS...Travel could be affected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

Monitor the latest forecasts for updates on this situation.

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

&&

$$

MTZ007-043-200030-
/O.CON.KMSO.WW.Y.0072.211219T1200Z-211219T1800Z/
/O.CON.KMSO.WS.A.0009.211219T1800Z-211220T1200Z/
Butte/Blackfoot Region-Potomac/Seeley Lake Region-
524 PM MST Sat Dec 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM TO 11 AM
MST SUNDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY MORNING
THROUGH LATE SUNDAY NIGHT...

* WHAT...For the Winter Weather Advisory, snow expected. Total 
  snow accumulations of 1 to 3 inches. For the Winter Storm 
  Watch, heavy snow possible. Total snow accumulations of 5 to 8 
  inches possible north of Interstate 90.

* WHERE...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 5 AM to 11 AM MST 
  Sunday. For the Winter Storm Watch, from Sunday morning 
  through late Sunday night.

* IMPACTS...Travel could be affected. Patchy blowing snow could 
  significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

Monitor the latest forecasts for updates on this situation.

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

&&

$$

IDZ008-200030-
/O.CON.KMSO.WW.Y.0072.211219T1200Z-211220T1200Z/
Lower Hells Canyon/Salmon River Region-
424 PM PST Sat Dec 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM SUNDAY TO
4 AM PST MONDAY ABOVE 3500 FEET...

* WHAT...Snow expected above 3500 feet. Total snow accumulations 
  of 5 to 7 inches for Whitebird Hill. Winds gusting as high as 
  25 mph.

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

* WHEN...From 4 AM Sunday to 4 AM PST Monday.

* IMPACTS...Travel could be affected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

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

&&

$$

077 
WWUS45 KMSO 190209
WSWMSO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
709 PM MST Sat Dec 18 2021

MTZ005-200215-
/O.UPG.KMSO.WW.Y.0072.211219T1200Z-211219T1800Z/
/O.UPG.KMSO.WS.A.0009.211219T1800Z-211220T1200Z/
/O.EXB.KMSO.WW.Y.0071.211219T0600Z-211219T1200Z/
/O.EXA.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
Missoula/Bitterroot Valleys-
709 PM MST Sat Dec 18 2021

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

* WHAT...For the Winter Storm Warning, heavy snow expected. Total
  snow accumulations of 4 to 8 inches. For the Winter Weather 
  Advisory, snow expected. Total snow accumulations of up to one 
  inch.

* WHERE...Missoula/Bitterroot Valleys.

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

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling. 

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

&&

$$

MTZ043-200215-
/O.UPG.KMSO.WW.Y.0072.211219T1200Z-211219T1800Z/
/O.UPG.KMSO.WS.A.0009.211219T1800Z-211220T1200Z/
/O.EXB.KMSO.WW.Y.0071.211219T0600Z-211219T1200Z/
/O.EXA.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
Potomac/Seeley Lake Region-
709 PM MST Sat Dec 18 2021

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

* WHAT...For the Winter Storm Warning, heavy snow expected. Total
  snow accumulations of 7 to 13 inches. For the winter weather
  advisory, 1 to 3 inches. 

* 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 AM Sunday to 5 AM 
  MST Monday. For the Winter Weather Advisory, from 11 PM this 
  evening to 5 AM MST Sunday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling. 

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

&&

$$

MTZ007-200215-
/O.UPG.KMSO.WW.Y.0072.211219T1200Z-211219T1800Z/
/O.UPG.KMSO.WS.A.0009.211219T1800Z-211220T1200Z/
/O.EXA.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
Butte/Blackfoot Region-
709 PM MST Sat Dec 18 2021

...WINTER STORM WARNING IN EFFECT FROM 5 AM SUNDAY TO 5 AM MST
MONDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 11
  inches. Heaviest snow north of I-90 and US Highway 12. Very
  difficult winter travel conditions.

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

* WHEN...From 5 AM Sunday to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IDZ006-200215-
/O.CON.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
/O.CON.KMSO.WW.Y.0071.000000T0000Z-211219T0600Z/
Southern Clearwater Mountains-
609 PM PST Sat Dec 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 AM SUNDAY TO
4 AM PST MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. 
  Total snow accumulations of 4 to 8 inches at low elevations 
  including Lowell, and close to 2 feet near Lolo Pass. For the 
  Winter Weather Advisory, snow. Snow accumulations of 1 to 3 
  inches.

* WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass.

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

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling.

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

&&

$$

IDZ005-200215-
/O.CON.KMSO.WS.W.0012.211219T0600Z-211220T1200Z/
/O.CON.KMSO.WW.Y.0071.000000T0000Z-211219T0600Z/
Northern Clearwater Mountains-
609 PM PST Sat Dec 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 4 AM PST MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. 
  Total snow accumulations of 12 to 18 inches. For the Winter 
  Weather Advisory, snow. Snow accumulations of 1 to 3 inches.

* WHERE...Elk River, Highway 11 Pierce to Headquarters, and 
  Pierce.

* WHEN...For the Winter Storm Warning, from 10 PM this evening 
  to 4 AM PST Monday. For the Winter Weather Advisory, until 10 
  PM PST this evening.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling.

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

&&

$$

MTZ003-200215-
/O.CON.KMSO.WS.W.0012.211219T0400Z-211219T1500Z/
/O.CON.KMSO.WW.Y.0072.211219T1500Z-211220T1200Z/
Flathead/Mission Valleys-
709 PM MST Sat Dec 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM MST SUNDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 AM SUNDAY TO
5 AM MST MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. 
  Total snow accumulations of 2 to 5 inches. Low visibility, 
  hazardous travel conditions with blowing snow in the Flathead 
  Valley. For the Winter Weather Advisory, snow expected. Total 
  snow accumulations of up to 2 inches.

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

* WHEN...For the Winter Storm Warning, from 9 PM this evening to 
  8 AM MST Sunday. For the Winter Weather Advisory, from 8 AM 
  Sunday to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling.

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

&&

$$

IDZ007-200215-
/O.CON.KMSO.WS.W.0012.211219T0400Z-211219T2000Z/
/O.CON.KMSO.WW.Y.0072.211219T2000Z-211220T1200Z/
Orofino/Grangeville Region-
609 PM PST Sat Dec 18 2021

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

* WHAT...For the Winter Storm Warning, heavy snow expected. 
  Total snow accumulations of 4 to 7 inches. For the Winter 
  Weather Advisory, mixed precipitation expected. Total snow 
  accumulations of up to 2 inches and ice accumulations of a 
  light glaze.

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

* WHEN...For the Winter Storm Warning, from 8 PM this evening to 
  noon PST Sunday. For the Winter Weather Advisory, from noon 
  Sunday to 4 AM PST Monday.

* IMPACTS...Travel could be very difficult. Heavy wet snow could
  lead to power outages. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling.

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

&&

$$

MTZ001-200215-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
Kootenai/Cabinet Region-
709 PM MST Sat Dec 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 5 to 10 inches in the valleys, 9 to 18 inches 
  in the Purcell Mountains and 18 to 30 inches in the Cabinet 
  Mountains. Ice accumulations of a light glaze. Sunday morning 
  valley precipitation is forecast to lighten up and may change 
  to freezing rain or drizzle. Snow will return over night 
  Sunday.

* 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 this morning to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ002-200215-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
West Glacier Region-
709 PM MST Sat Dec 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 6 to 8 inches in the valleys and 6 to 12 
  inches on the mountain passes, with accumulations reaching 12 
  to 18 inches on the higher terrain. Ice accumulations of a 
  light glaze. Blowing snow is also expected. Winds gusting as 
  high as 50 mph near Marias Pass.

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

* WHEN...From 11 AM Saturday to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult. The cold wind chills 
  as low as 15 below zero could result in hypothermia if 
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ004-200215-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
Lower Clark Fork Region-
709 PM MST Sat Dec 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 4 to 7 inches along I-90 St. Regis to Huson 
  and Highway 200 corridor, 6 to 15 inches from St. Regis to 
  Lookout Pass, 16 to 24 inches over Lookout Pass. Ice 
  accumulations of a light glaze possible in the lower 
  elevations.

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

* WHEN...From 11 AM this morning to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ006-200215-
/O.CON.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
Bitterroot/Sapphire Mountains-
709 PM MST Sat Dec 18 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM SUNDAY TO
5 AM MST MONDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 
  12 inches, and close to 2 feet of snow for Lolo Pass.

* WHERE...Lolo Pass, and Bitterroot/Sapphire Mountains.

* WHEN...From 5 AM Sunday to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IDZ008-200215-
/O.CON.KMSO.WW.Y.0072.211219T1200Z-211220T1200Z/
Lower Hells Canyon/Salmon River Region-
609 PM PST Sat Dec 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM SUNDAY TO
4 AM PST MONDAY ABOVE 3500 FEET...

* WHAT...Snow expected above 3500 feet. Total snow accumulations 
  of 5 to 7 inches for Whitebird Hill. Winds gusting as high as 
  25 mph.

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

* WHEN...From 4 AM Sunday to 4 AM PST Monday.

* IMPACTS...Travel could be affected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

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

&&

$$

597 
WWUS45 KMSO 191111
WSWMSO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
411 AM MST Sun Dec 19 2021

MTZ005-201115-
/O.CAN.KMSO.WW.Y.0071.000000T0000Z-211219T1200Z/
/O.EXT.KMSO.WS.W.0012.211219T1111Z-211220T1200Z/
Missoula/Bitterroot Valleys-
411 AM MST Sun Dec 19 2021

...WINTER STORM WARNING NOW IN EFFECT UNTIL 5 AM MST MONDAY...
...WINTER WEATHER ADVISORY IS CANCELLED...

* WHAT...Heavy snow expected. Freezing rain will continue for
  areas north of Florence, MT through 7am, before changing to 
  snow. Total snow accumulations of 4 to 8 inches and ice up to a 
  light glaze. 

* WHERE...Missoula/Bitterroot Valleys.

* WHEN...Until 5 AM MST Monday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ003-201115-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211219T1500Z/
/O.CON.KMSO.WW.Y.0072.211219T1500Z-211220T1200Z/
Flathead/Mission Valleys-
411 AM MST Sun Dec 19 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM MST THIS
MORNING...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 AM THIS
MORNING TO 5 AM MST MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. 
  Total snow accumulations of 2 to 5 inches. Low visibility, 
  hazardous travel conditions with blowing snow in the Flathead 
  Valley. For the Winter Weather Advisory, snow expected. Total 
  snow accumulations of up to 2 inches.

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

* WHEN...For the Winter Storm Warning, from 9 PM this evening to 
  8 AM MST Sunday. For the Winter Weather Advisory, from 8 AM 
  Sunday to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling.

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

&&

$$

MTZ043-201115-
/O.CON.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
/O.CON.KMSO.WW.Y.0071.000000T0000Z-211219T1200Z/
Potomac/Seeley Lake Region-
411 AM MST Sun Dec 19 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST EARLY
THIS MORNING...
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. 
  Total snow accumulations of 7 to 13 inches. For the winter 
  weather advisory, 1 to 3 inches.

* 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 AM Sunday to 5 AM 
  MST Monday. For the Winter Weather Advisory, from 11 PM this 
  evening to 5 AM MST Sunday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling.

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

&&

$$

IDZ007-201115-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211219T2000Z/
/O.CON.KMSO.WW.Y.0072.211219T2000Z-211220T1200Z/
Orofino/Grangeville Region-
311 AM PST Sun Dec 19 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST TODAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO
4 AM PST MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow expected. 
  Total snow accumulations of 4 to 7 inches. For the Winter 
  Weather Advisory, mixed precipitation expected. Total snow 
  accumulations of up to 2 inches and ice accumulations of a 
  light glaze.

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

* WHEN...For the Winter Storm Warning, from 8 PM this evening to 
  noon PST Sunday. For the Winter Weather Advisory, from noon 
  Sunday to 4 AM PST Monday.

* IMPACTS...Travel could be very difficult. Heavy wet snow could 
  lead to power outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling.

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

&&

$$

MTZ001-201115-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
Kootenai/Cabinet Region-
411 AM MST Sun Dec 19 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 5 to 10 inches in the valleys, 9 to 18 inches 
  in the Purcell Mountains and 18 to 30 inches in the Cabinet 
  Mountains. Ice accumulations of a light glaze. Sunday morning 
  valley precipitation is forecast to lighten up and may change 
  to freezing rain or drizzle. Snow will return over night 
  Sunday.

* 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 this morning to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ002-201115-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
West Glacier Region-
411 AM MST Sun Dec 19 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 6 to 8 inches in the valleys and 6 to 12 
  inches on the mountain passes, with accumulations reaching 12 
  to 18 inches on the higher terrain. Ice accumulations of a 
  light glaze. Blowing snow is also expected. Winds gusting as 
  high as 50 mph near Marias Pass.

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

* WHEN...From 11 AM Saturday to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult. The cold wind chills 
  as low as 15 below zero could result in hypothermia if 
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IDZ005-201115-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
Northern Clearwater Mountains-
311 AM PST Sun Dec 19 2021

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

* WHAT...For the Winter Storm Warning, heavy snow expected. 
  Total snow accumulations of 12 to 18 inches. For the Winter 
  Weather Advisory, snow. Snow accumulations of 1 to 3 inches.

* WHERE...Elk River, Highway 11 Pierce to Headquarters, and 
  Pierce.

* WHEN...For the Winter Storm Warning, from 10 PM this evening 
  to 4 AM PST Monday. For the Winter Weather Advisory, until 10 
  PM PST this evening.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling.

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

&&

$$

MTZ004-201115-
/O.CON.KMSO.WS.W.0012.000000T0000Z-211220T1200Z/
Lower Clark Fork Region-
411 AM MST Sun Dec 19 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 4 to 7 inches along I-90 St. Regis to Huson 
  and Highway 200 corridor, 6 to 15 inches from St. Regis to 
  Lookout Pass, 16 to 24 inches over Lookout Pass. Ice 
  accumulations of a light glaze possible in the lower 
  elevations.

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

* WHEN...From 11 AM this morning to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IDZ006-201115-
/O.CON.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
Southern Clearwater Mountains-
311 AM PST Sun Dec 19 2021

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

* WHAT...For the Winter Storm Warning, heavy snow expected. 
  Total snow accumulations of 4 to 8 inches at low elevations 
  including Lowell, and close to 2 feet near Lolo Pass. For the 
  Winter Weather Advisory, snow. Snow accumulations of 1 to 3 
  inches.

* WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass.

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

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Slow down and use caution while traveling.

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

&&

$$

MTZ006-201115-
/O.CON.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
Bitterroot/Sapphire Mountains-
411 AM MST Sun Dec 19 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 
  12 inches, and close to 2 feet of snow for Lolo Pass.

* WHERE...Lolo Pass, and Bitterroot/Sapphire Mountains.

* WHEN...From 5 AM Sunday to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

MTZ007-201115-
/O.CON.KMSO.WS.W.0012.211219T1200Z-211220T1200Z/
Butte/Blackfoot Region-
411 AM MST Sun Dec 19 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 
  11 inches. Heaviest snow north of I-90 and US Highway 12. Very 
  difficult winter travel conditions.

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

* WHEN...From 5 AM Sunday to 5 AM MST Monday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IDZ008-201115-
/O.CON.KMSO.WW.Y.0072.211219T1200Z-211220T1200Z/
Lower Hells Canyon/Salmon River Region-
311 AM PST Sun Dec 19 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
MONDAY ABOVE 3500 FEET...

* WHAT...Snow expected above 3500 feet. Total snow accumulations 
  of 5 to 7 inches for Whitebird Hill. Winds gusting as high as 
  25 mph.

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

* WHEN...From 4 AM Sunday to 4 AM PST Monday.

* IMPACTS...Travel could be affected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

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

&&

$$

Area Forecast Discussion
National Weather Service Missoula MT
303 AM MST Sat Dec 18 2021

...Potent Winter Storm to Impact Northwest Montana and North-
Central Idaho Saturday through Monday...

.DISCUSSION...The Northern Rockies is still on track for a long
duration and potent winter weather system. Currently, there is a
cold Canadian airmass over Western Montana. A strong Pacific low
pressure system will cut off from the flow and sit west of Oregon
through Monday. This in turn will force moist westerly flow into
the Northern Rockies beginning this evening. Sunday a reinforcing
push of cold air will move into northwest Montana. This boundary
is expected to interact with the moist flow aloft and enhance
valley snowfall at the point of interaction.

Saturday will start very cold with many locations along the
Continental Divide below zero, most locations in W. Montana will
be low single digits except highway 200 and 2 corridors west of
the Flathead Valley; where clouds have slowed the cooling process.
Light snow will develop around daybreak at Lookout Pass, along
the Idaho border, and the northern Clearwater Mountains. Expect
moderate snow at Lookout Pass by noon and Marias Pass by midday,
with deteriorating road conditions in both locations. Initially,
Lincoln and Sanders Counties will be the focus of precipitation.

The moisture will begin to sag south after midnight, as
precipitation lightens up Sunday morning for the Highway 200 & 2
corridors, freezing rain or drizzle may develop producing a light
glaze of ice.

Sunday morning the Arctic front will arrive at Marias Pass, expect
heavy snow and winds shifting from the east. Winds could gust 40
to 50 mph. The Arctic boundary will continue to progress south
through the day. Snowfall will be enhanced as the boundary comes
in contact with the moist westerly flow. The Arctic airmass should
push as far south as the I-90 corridor, where it is expected to
stall.

On Monday, the Arctic boundary is forecast to retreat north with
the moisture. So locations in Lincoln and Sanders Counties may
see a brief return to snow.

Total snowfall by Monday morning moderate confidence:

Lookout Pass                         16-24"
Marias Pass                           6-12"
Valleys Sanders and Lincoln Counties  5-10"
Flathead Valley                        3-6"
Swan Valley                           6-10"
Clearwater Mountains of Idaho        10-18"
US-12 west of Lolo Pass, ID           6-12"
Lolo Pass                            12-18"

West-central Montana and the I-90 corridor there is less confidence.
This is due to downsloping considerations and the exact locations
of the cold air and surface low pressure. Since the potential
snowfall will have a higher impact on the community than the
current forecast, both will be discussed.

I-90 west of Missoula up to St. Regis 2-5" moderate probability,
5-10" low probability.

Missoula Valley 2-3" moderate probability, 4-8" low probability.

I-90 east of Missoula 2-4" moderate probability, 3-6" low
probability.

This active pattern is expected to continue through at least the
end of year. The Climate Prediction Center has forecast below
normal temperatures and above normal precipitation through the
31st.

&&

.AVIATION...

Clouds are increasing across Northern Rockies air space, ahead of
a long-lasting and complex winter storm event (through Monday).
The first impact to flying weather will be west winds gusting
over 50 kts over the terrain on Saturday, particularly near the
Continental Divide. Also, southerly winds gusting to 30 kts will
develop near KGIC Saturday and Sunday. Areas of passing light snow
will move across the air space beginning 18/1200Z, further
lowering ceilings, occasionally lowering visibility, and obscuring
terrain. Areas west of KGPI will see an increase in snow and
freezing rain after 18/1800Z, which will eventually spread to all
locations north of KBTM on Sunday. An Arctic airmass will push
south across the region on Sunday to around the I-90 (KMSO)
corridor. Expect winds to shift from southerly to east
northeasterly and become gusty, potentially lowering visibility
with blowing snow.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...Winter Storm Warning from 11 AM this morning to 5 AM MST Monday
     Lower Clark Fork Region.

     Winter Storm Warning from 11 AM this morning to 5 AM MST Monday
     West Glacier Region.

     Winter Storm Warning from 11 AM this morning to 5 AM MST Monday
     Kootenai/Cabinet Region.

ID...Winter Storm Watch from Saturday evening through late Sunday
     night Northern Clearwater Mountains.

&&