Alert archive / Montana / Winter Storm Warnings in 2021

Winter Storm Warning 4, NWS Great Falls, MT

October 10, 2021

NWS Great Falls, MT issued this winter storm warning at Oct 10, 2021, 2:29 AM MDT. It took effect at Oct 11, 2021, 12:00 AM MDT. It was in force for 36 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 10, 2021, 2:29 AM MDT (08:29 UTC)
In effect from
Oct 11, 2021, 12:00 AM MDT
Expired
Oct 12, 2021, 12:00 PM MDT
In force
36 hr
Issued by
NWS Great Falls, MT

The text

As transmitted.

389 
WWUS45 KTFX 100829
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
229 AM MDT Sun Oct 10 2021

MTZ008-015-055-102300-
/O.UPG.KTFX.WS.A.0005.211011T0600Z-211012T1800Z/
/O.NEW.KTFX.WS.W.0004.211011T0600Z-211012T1800Z/
Beaverhead-Madison-Gallatin-
Including the following locations: Twin Bridges, West
Yellowstone, Virginia City, Bozeman Pass, Raynolds Pass, Dillon,
Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris
Hill, Wise River, Monida Pass, City of Bozeman, Battle Ridge
Pass, Ennis, and Targhee Pass
229 AM MDT Sun Oct 10 2021

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO NOON MDT 
TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 6 and 
  18 inches in the mountains. Lower elevations of Madison and 
  Gallatin Counties can expect 3 to 6 inches. Lower elevations of 
  western Beaverhead County can  expect 1 to 3 inches.

* WHERE...Beaverhead, Gallatin and Madison Counties.

* WHEN...From Midnight tonight to Noon MDT Tuesday.

* IMPACTS...Travel could be very difficult to impossible. Patchy 
  blowing snow could significantly reduce visibility. The hazardous 
  conditions could impact the Monday morning and evening commutes.

* ADDITIONAL DETAILS...Hunters and other outdoor recreationalists in 
  southwest Montana should stay out of the mountains until after 
  Tuesday.

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 can 
be obtained by calling 5 1 1 or visiting the MDT Road Report website.

&&

$$

mpj
8 follow-up statements
646 
WWUS45 KTFX 100849 CCA
WSWTFX

URGENT - WINTER WEATHER MESSAGE...CORRECTED
National Weather Service Great Falls MT
249 AM MDT Sun Oct 10 2021

MTZ008-015-055-102300-
/O.UPG.KTFX.WS.A.0005.211011T0600Z-211012T1800Z/
/O.COR.KTFX.WS.W.0004.211011T0600Z-211012T1800Z/
Beaverhead-Madison-Gallatin-
Including the following locations: Twin Bridges, West
Yellowstone, Virginia City, Bozeman Pass, Raynolds Pass, Dillon,
Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris
Hill, Wise River, Monida Pass, City of Bozeman, Battle Ridge
Pass, Ennis, and Targhee Pass
249 AM MDT Sun Oct 10 2021

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO NOON MDT 
TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 8
  and 18 inches in the mountains. Some higher peaks could receive
  accumulations in excess of 2 feet. Lower elevations in northern 
  Madison and Gallatin Counties can expect 4 to 8 inches. Lower 
  elevations of western Beaverhead County can expect 1 to 4 
  inches.

* WHERE...Beaverhead, Gallatin and Madison Counties.

* WHEN...From Midnight tonight to Noon MDT Tuesday.

* IMPACTS...Travel could be very difficult to impossible. Patchy 
  blowing snow could significantly reduce visibility. The hazardous 
  conditions could impact the Monday morning and evening commutes.

* ADDITIONAL DETAILS...Hunters and other outdoor recreationalists in 
  southwest Montana should stay out of the mountains until after 
  Tuesday.

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 can 
be obtained by calling 5 1 1 or visiting the MDT Road Report website.

&&

$$

mpj
913 
WWUS45 KTFX 102009
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
209 PM MDT Sun Oct 10 2021

MTZ008-015-055-111200-
/O.CON.KTFX.WS.W.0004.211011T0600Z-211012T1800Z/
Beaverhead-Madison-Gallatin-
Including the following locations: Twin Bridges, West
Yellowstone, Virginia City, Bozeman Pass, Raynolds Pass, Dillon,
Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris
Hill, Wise River, Monida Pass, Battle Ridge Pass, Ennis, Targhee
Pass, and City of Bozeman
209 PM MDT Sun Oct 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 
NOON MDT TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 6 and 
  18 inches in the mountains. Lower elevations of Madison and 
  Gallatin Counties can expect 3 to 6 inches. Lower elevations of 
  western Beaverhead County can  expect 1 to 3 inches.

* WHERE...Beaverhead, Gallatin and Madison Counties.

* WHEN...From Midnight tonight to Noon MDT Tuesday.

* IMPACTS...Travel could be very difficult to impossible. Areas of 
  blowing snow could significantly reduce visibility. The hazardous 
  conditions could impact the Monday morning and evening commutes.

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 can 
be obtained by calling 5 1 1 or visiting the MDT Road Report website.

&&

$$

MTZ052-111200-
/O.NEW.KTFX.WW.Y.0036.211011T1200Z-211012T1800Z/
Jefferson-
Including the following locations: Boulder, Elk Park Pass,
Boulder Hill, Montana City, and Whitehall
209 PM MDT Sun Oct 10 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM MONDAY TO NOON MDT 
TUESDAY...

* WHAT...Snow expected. Total snow accumulations between 3 and 5 
  inches above 5000 feet with snow accumulation up to 3 inches below 
  5000 feet. Winds gusting as high as 30 mph.

* WHERE...Jefferson County.

* WHEN...From 6 AM Monday to Noon MDT Tuesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. Travel could be very difficult. 
  Patchy blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the Monday morning and evening 
  commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions can be obtained by calling 5 1 1 or visiting the MDT Road 
Report website.

&&

$$

MTZ050-051-054-111200-
/O.NEW.KTFX.WW.Y.0036.211012T0000Z-211012T1800Z/
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Stanford, Martinsdale, Winifred, Grass Range, Lewistown Divide,
White Sulphur Springs, Lewistown, and Hobson
209 PM MDT Sun Oct 10 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM MONDAY TO NOON MDT 
TUESDAY...

* WHAT...Snow expected. Total snow accumulations 3 to 5 inches above 
  5000 feet with up to 3 inches below 5000 feet. Little or snow 
  accumulation is expected in northern Fergus county.

* WHERE...Fergus, Judith Basin and Meagher Counties.

* WHEN...From 6 PM Monday to Noon MDT Tuesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. Plan on slippery road 
  conditions. The hazardous conditions could impact the Tuesday 
  morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions can be obtained by calling 5 1 1 or visiting the MDT Road 
Report website.

&&

$$

Hoenisch
296 
WWUS45 KTFX 110836
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
236 AM MDT Mon Oct 11 2021

MTZ008-015-055-112100-
/O.CON.KTFX.WS.W.0004.000000T0000Z-211012T1800Z/
Beaverhead-Madison-Gallatin-
Including the following locations: Twin Bridges, West
Yellowstone, Virginia City, Bozeman Pass, Raynolds Pass, Dillon,
Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris
Hill, Wise River, Monida Pass, Battle Ridge Pass, Ennis, Targhee
Pass, and City of Bozeman
236 AM MDT Mon Oct 11 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 6 and 
  18 inches in the mountains. Lower elevations of Madison and 
  Gallatin Counties can expect 3 to 6 inches. Lower elevations of 
  western Beaverhead County can  expect 1 to 3 inches.

* WHERE...Beaverhead, Gallatin and Madison Counties.

* WHEN...Until Noon MDT Tuesday.

* IMPACTS...Travel could be very difficult to impossible. Areas of 
  blowing snow could significantly reduce visibility. The hazardous 
  conditions could impact the Monday morning and evening commutes.

* ADDITIONAL DETAILS...Hunters and other outdoor recreationalists in 
  southwest Montana should stay out of the mountains until after 
  Tuesday.

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 can 
be obtained by calling 5 1 1 or visiting the MDT Road Report website.

&&

$$

MTZ052-112100-
/O.CON.KTFX.WW.Y.0036.211011T1200Z-211012T1800Z/
Jefferson-
Including the following locations: Boulder, Elk Park Pass,
Boulder Hill, Montana City, and Whitehall
236 AM MDT Mon Oct 11 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM THIS MORNING 
TO NOON MDT TUESDAY...

* WHAT...Snow expected. Total snow accumulations between 3 and 5 
  inches above 5000 feet with snow accumulation up to 3 inches below 
  5000 feet. Winds gusting as high as 30 mph.

* WHERE...Jefferson County.

* WHEN...From 6 AM this morning to Noon MDT Tuesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. Travel could be very difficult. 
  The hazardous conditions could impact the Monday morning and 
  evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions can be obtained by calling 5 1 1 or visiting the MDT Road 
Report website.

&&

$$

MTZ050-051-054-112100-
/O.CON.KTFX.WW.Y.0036.211012T0000Z-211012T1800Z/
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Stanford, Martinsdale, Winifred, Grass Range, Lewistown Divide,
White Sulphur Springs, Lewistown, and Hobson
236 AM MDT Mon Oct 11 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING 
TO NOON MDT TUESDAY...

* WHAT...Snow expected. Total snow accumulations 3 to 5 inches above 
  5000 feet with up to 3 inches below 5000 feet. Little or snow 
  accumulation is expected in northern Fergus county.

* WHERE...Fergus, Judith Basin and Meagher Counties.

* WHEN...From 6 PM this evening to Noon MDT Tuesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. Plan on slippery road 
  conditions. The hazardous conditions could impact the Tuesday 
  morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions can be obtained by calling 5 1 1 or visiting the MDT Road 
Report website.

&&

$$

Ludwig
280 
WWUS45 KTFX 112026
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
226 PM MDT Mon Oct 11 2021

MTZ008-015-055-121000-
/O.CON.KTFX.WS.W.0004.000000T0000Z-211012T1800Z/
Beaverhead-Madison-Gallatin-
Including the following locations: Twin Bridges, West
Yellowstone, Virginia City, Bozeman Pass, Raynolds Pass, Dillon,
Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris
Hill, Wise River, Monida Pass, Battle Ridge Pass, Ennis, Targhee
Pass, and City of Bozeman
226 PM MDT Mon Oct 11 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT TUESDAY...

* WHAT...Heavy snow expected. Additional snow accumulations between 
  6 and 15 inches in the mountains. Lower elevations of Madison and 
  Gallatin Counties can expect 2 to 6 inches. Lower elevations of 
  western Beaverhead County can  expect 1 to 3 inches.

* WHERE...Beaverhead, Gallatin and Madison Counties.

* WHEN...Until Noon MDT Tuesday.

* IMPACTS...Travel could be very difficult. Areas of blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact the Monday evening and Tuesday morning commutes. Tree 
  damage and isolated power outages possible.

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 can 
be obtained by calling 5 1 1 or visiting the MDT Road Report website.

&&

$$

MTZ052-121000-
/O.CON.KTFX.WW.Y.0036.000000T0000Z-211012T1800Z/
Jefferson-
Including the following locations: Boulder, Elk Park Pass,
Boulder Hill, Montana City, and Whitehall
226 PM MDT Mon Oct 11 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT 
TUESDAY...

* WHAT...Snow expected. Additional snow accumulations between 2 and 
  6 inches above 5000 feet with snow accumulation up to 3 inches 
  below
  5000 feet. Winds gusting as high as 30 mph.

* WHERE...Jefferson County.

* WHEN...Until Noon MDT Tuesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. Travel could be difficult. The 
  hazardous conditions could impact the Monday evening and Tuesday 
  morning commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions can be obtained by calling 5 1 1 or visiting the MDT Road 
Report website.

&&

$$

MTZ050-051-054-121000-
/O.CON.KTFX.WW.Y.0036.211012T0000Z-211012T1800Z/
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Stanford, Martinsdale, Winifred, Grass Range, Lewistown Divide,
White Sulphur Springs, Lewistown, and Hobson
226 PM MDT Mon Oct 11 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING 
TO NOON MDT TUESDAY...

* WHAT...Snow expected. Total snow accumulations 2 to 6 inches above 
  5000 feet with up to 3 inches below 5000 feet. Little to no snow 
  accumulation is expected in northern Fergus county.

* WHERE...Fergus, Judith Basin and Meagher Counties.

* WHEN...From 6 PM this evening to Noon MDT Tuesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. The hazardous conditions could 
  impact the Monday evening and Tuesday morning commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions can be obtained by calling 5 1 1 or visiting the MDT Road 
Report website.

&&

$$

RG
252 
WWUS45 KTFX 120228
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
828 PM MDT Mon Oct 11 2021

MTZ008-015-055-121200-
/O.CON.KTFX.WS.W.0004.000000T0000Z-211012T1800Z/
Beaverhead-Madison-Gallatin-
Including the following locations: Twin Bridges, West
Yellowstone, Virginia City, Bozeman Pass, Raynolds Pass, Dillon,
Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris
Hill, Wise River, Monida Pass, Battle Ridge Pass, Ennis, Targhee
Pass, and City of Bozeman
828 PM MDT Mon Oct 11 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT TUESDAY...

* WHAT...Periods of snow. The snow will be heavy at times. New snow 
  accumulations of 2 to 4 inches at lower elevations and 5 to 9 
  inches in the mountains. Areas of blowing snow. Winds gusting as 
  high as 45 mph.

* WHERE...Beaverhead, Gallatin and Madison Counties.

* WHEN...Until Noon MDT Tuesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous.

* ADDITIONAL DETAILS...Visibility will be reduced to less than a 
  half mile at times in areas of falling and blowing snow.

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 can 
be obtained by calling 5 1 1 or visiting the MDT Road Report website.

&&

$$

MTZ050-051-054-121200-
/O.CON.KTFX.WW.Y.0036.000000T0000Z-211012T1800Z/
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Stanford, Martinsdale, Winifred, Grass Range, Lewistown Divide,
White Sulphur Springs, Lewistown, and Hobson
828 PM MDT Mon Oct 11 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT 
TUESDAY...

* WHAT...Snow. Additional snow accumulations 2 to 4 inches. Lighter 
  snow amounts over northern Fergus County.

* WHERE...Fergus, Judith Basin and Meagher Counties.

* WHEN...Until Noon MDT Tuesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions can be obtained by calling 5 1 1 or visiting the MDT Road 
Report website.

&&

$$

MTZ052-121200-
/O.CON.KTFX.WW.Y.0036.000000T0000Z-211012T1800Z/
Jefferson-
Including the following locations: Boulder, Elk Park Pass,
Boulder Hill, Montana City, and Whitehall
828 PM MDT Mon Oct 11 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT 
TUESDAY...

* WHAT...Snow. Additional snow accumulations between 1 and 3 inches.

* WHERE...Jefferson County.

* WHEN...Until Noon MDT Tuesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions can be obtained by calling 5 1 1 or visiting the MDT Road 
Report website.

&&

$$

Brusda
980 
WWUS45 KTFX 120909
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
309 AM MDT Tue Oct 12 2021

MTZ008-015-055-121800-
/O.CON.KTFX.WS.W.0004.000000T0000Z-211012T1800Z/
Beaverhead-Madison-Gallatin-
Including the following locations: Twin Bridges, West
Yellowstone, Virginia City, Bozeman Pass, Raynolds Pass, Dillon,
Big Hole Pass, Bozeman Apt, Chief Joseph Pass, Wisdom, Norris
Hill, Wise River, Monida Pass, Battle Ridge Pass, Ennis, Targhee
Pass, and City of Bozeman
309 AM MDT Tue Oct 12 2021

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

* WHAT...Heavy snow. Additional snow accumulations of 1 to 2 inches 
  at lower elevations and up to 4 inches in the mountains. Winds 
  gusting as high as 35 mph.

* WHERE...Beaverhead, Gallatin and Madison Counties.

* WHEN...Until Noon MDT today.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely remain slick and hazardous through much of the day.

* ADDITIONAL DETAILS...Snow will gradually diminish during the 
  morning hours but scattered light showers could continue into the 
  late afternoon or early evening hours.

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 can 
be obtained by calling 5 1 1 or visiting the MDT Road Report website.

&&

$$

MTZ050-051-054-121800-
/O.CON.KTFX.WW.Y.0036.000000T0000Z-211012T1800Z/
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Stanford, Martinsdale, Winifred, Grass Range, Lewistown Divide,
White Sulphur Springs, Lewistown, and Hobson
309 AM MDT Tue Oct 12 2021

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

* WHAT...Snow. Additional snow accumulations up to two inches.

* WHERE...Fergus, Judith Basin and Meagher Counties.

* WHEN...Until Noon MDT today.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely remain slick and hazardous through much of the day.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions can be obtained by calling 5 1 1 or visiting the MDT Road 
Report website.

&&

$$

MTZ052-121800-
/O.CON.KTFX.WW.Y.0036.000000T0000Z-211012T1800Z/
Jefferson-
Including the following locations: Boulder, Elk Park Pass,
Boulder Hill, Montana City, and Whitehall
309 AM MDT Tue Oct 12 2021

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

* WHAT...Snow. Additional snow accumulations up to one inch.

* WHERE...Jefferson County.

* WHEN...Until Noon MDT today.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely remain slick and hazardous through much of the day.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions can be obtained by calling 5 1 1 or visiting the MDT Road 
Report website.

&&

$$

mpj
467 
WWUS45 KTFX 121526
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
926 AM MDT Tue Oct 12 2021

MTZ008-121630-
/O.CAN.KTFX.WS.W.0004.000000T0000Z-211012T1800Z/
Beaverhead-
926 AM MDT Tue Oct 12 2021

...WINTER STORM WARNING IS CANCELLED...

Snow has ended across Beaverhead county. Some roads will remain 
snow packed and icy today...especially over mountain passes. 

$$

MTZ050>052-054-121630-
/O.CAN.KTFX.WW.Y.0036.000000T0000Z-211012T1800Z/
Judith Basin-Fergus-Jefferson-Meagher-
926 AM MDT Tue Oct 12 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow is ending from west to east across central Montana this
morning with little or no additional accumulation expected. 


$$

MTZ015-055-121800-
/O.CON.KTFX.WS.W.0004.000000T0000Z-211012T1800Z/
Madison-Gallatin-
Including Ennis, Norris Hill, Raynolds Pass, Virginia City, 
Bozeman Apt, City of Bozeman, West Yellowstone, 
Battle Ridge Pass, Bozeman Pass, and Targhee Pass
926 AM MDT Tue Oct 12 2021

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

* WHAT...Blowing and drifting snow over mountain passes. Snow 
  ending this morning with additional snow accumulations up to 1 
  inch. Winds gusting as high as 35 mph through noon.

* WHERE...Beaverhead, Gallatin and Madison Counties.

* WHEN...Until Noon MDT today.

* IMPACTS...Roads over mountain passes will remain slick and
  hazardous through this morning.

* ADDITIONAL DETAILS...Snow will gradually diminish during the
  morning hours but scattered light showers could continue into
  the late afternoon or early evening hours. Northeast to east
  winds gusting as high as 35 mph over mountain passes and up the
  Madison River Valley will diminish this afternoon. 

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
can be obtained by calling 5 1 1 or visiting the MDT Road Report
website.

&&

$$

http://www.weather.gov/greatfalls
435 
WWUS45 KTFX 121739
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1139 AM MDT Tue Oct 12 2021

MTZ015-055-121845-
/O.EXP.KTFX.WS.W.0004.000000T0000Z-211012T1800Z/
Madison-Gallatin-
Including the following locations: Twin Bridges, West
Yellowstone, Virginia City, Bozeman Pass, Raynolds Pass, Bozeman
Apt, Battle Ridge Pass, Norris Hill, City of Bozeman, Ennis, and
Targhee Pass
1139 AM MDT Tue Oct 12 2021

...WINTER STORM WARNING WILL EXPIRE AT NOON MDT TODAY...

A few light snow showers will linger into this afternoon but little 
or no additional accumulation is expected. Locally gusty winds will 
gradually diminish through this afternoon and may cause drifting of 
snow over mountain passes before winds become light this evening.

$$

Hoenisch

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 10, 2:09 PM MDTWinter Weather AdvisoryTFX43 hr

Nearby

Winter Storm Warnings in Montana, 2021Every winter storm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.