Alert archive / Montana / Wind Chill Advisories in 2021

Wind Chill Advisory 4, NWS Great Falls, MT

December 15, 2021

NWS Great Falls, MT issued this wind chill advisory at Dec 15, 2021, 1:21 PM MST. It took effect at Dec 16, 2021, 10:00 PM MST. It was in force for 29 hr.

The area

The counties it named.

The facts

Issued
Dec 15, 2021, 1:21 PM MST (20:21 UTC)
In effect from
Dec 16, 2021, 10:00 PM MST
Expired
Dec 18, 2021, 3:08 AM MST
In force
29 hr
Issued by
NWS Great Falls, MT

The text

As transmitted.

681 
WWUS45 KTFX 152021
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
121 PM MST Wed Dec 15 2021

MTZ009>011-044>047-161200-
/O.NEW.KTFX.WW.Y.0045.211217T0000Z-211217T1000Z/
/O.NEW.KTFX.WC.Y.0004.211217T0500Z-211218T0000Z/
Northern Rocky Mountain Front-Eastern Glacier-Hill-Toole-Liberty-
Eastern Pondera-Blaine-
Including the following locations: Hays, Harlem, Marias Pass,
Rocky Boy, Brady, Shelby, Browning, Rudyard, Heart Butte, Logan
Pass, Whitlash, Havre, Cut Bank, Chester, Chinook, Conrad, and
Sunburst
121 PM MST Wed Dec 15 2021

...WINTER WEATHER ADVISORY IN EFFECT
FROM 5 PM THURSDAY TO 3 AM MST FRIDAY...
...WIND CHILL ADVISORY IN EFFECT
FROM 10 PM THURSDAY TO 5 PM MST FRIDAY...

* WHAT...For the Winter Weather Advisory, snow expected. Total snow 
  accumulations 1 to 3 inches at lower elevations, and up to 6 
  inches in the mountains. For the Wind Chill Advisory, very cold 
  wind chills expected. Wind chills as low as 25 below zero.

* WHERE...A portion of north central Montana.

* WHEN...For the Winter Weather Advisory, from 5 PM Thursday to 3 AM 
  MST Friday. For the Wind Chill Advisory, from 10 PM Thursday to 5 
  PM MST Friday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Thursday evening and Friday morning 
  commutes. The dangerously cold wind chills could cause frostbite 
  on exposed skin in as little as 30 minutes.

* ADDITIONAL DETAILS...Blowing snow will also reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ012-013-048>051-054-161200-
/O.NEW.KTFX.WW.Y.0045.211217T0400Z-211217T1200Z/
/O.NEW.KTFX.WC.Y.0004.211217T0700Z-211217T1900Z/
Cascade-Chouteau-Southern Rocky Mountain Front-Eastern Teton-
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Fairfield, Lewistown Divide, Choteau, Great Falls, Lewistown,
Kings Hill Pass, Stanford, Bynum, Augusta, Cascade, Grass Range,
Dutton, Martinsdale, Big Sandy, Carter, Winifred, Fort Benton,
White Sulphur Springs, Belt, and Hobson
121 PM MST Wed Dec 15 2021

...WINTER WEATHER ADVISORY IN EFFECT
FROM 9 PM THURSDAY TO 5 AM MST FRIDAY...
...WIND CHILL ADVISORY IN EFFECT
FROM MIDNIGHT THURSDAY NIGHT TO NOON MST FRIDAY...

* WHAT...For the Winter Weather Advisory, snow expected. Total snow 
  accumulations 1 to 3 inches at lower elevations, and up to 6 
  inches in the mountains. For the Wind Chill Advisory, very cold 
  wind chills expected. Wind chills as low as 25 below zero.

* WHERE...Portions of central and north central Montana.

* WHEN...For the Winter Weather Advisory, from 9 PM Thursday to 5 AM 
  MST Friday. For the Wind Chill Advisory, from Midnight Thursday 
  Night to Noon MST Friday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Friday morning commute. The 
  dangerously cold wind chills could cause frostbite on exposed skin 
  in as little as 30 minutes.

* ADDITIONAL DETAILS...Blowing snow will also reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ014-161200-
/O.NEW.KTFX.WW.Y.0045.211217T0400Z-211217T1200Z/
Central and Southern Lewis and Clark-
Including the following locations: Rogers Pass, Helena, MacDonald
Pass, Lincoln, and Flesher Pass
121 PM MST Wed Dec 15 2021

...WINTER WEATHER ADVISORY IN EFFECT
FROM 9 PM THURSDAY TO 5 AM MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations 1 to 3 inches.

* WHERE...Central and Southern Lewis and Clark County.

* WHEN...From 9 PM Thursday to 5 AM MST Friday.

* IMPACTS...Plan on slippery road conditions. 

* ADDITIONAL DETAILS...Blowing snow will also reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$

Brusda
10 follow-up statements
170 
WWUS45 KTFX 160920
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
220 AM MST Thu Dec 16 2021

MTZ009>011-044>047-170030-
/O.CON.KTFX.WW.Y.0045.211217T0000Z-211217T1000Z/
/O.CON.KTFX.WC.Y.0004.211217T0500Z-211218T0000Z/
Northern Rocky Mountain Front-Eastern Glacier-Hill-Toole-Liberty-
Eastern Pondera-Blaine-
Including the following locations: Hays, Harlem, Marias Pass,
Rocky Boy, Brady, Shelby, Browning, Rudyard, Heart Butte, Logan
Pass, Whitlash, Havre, Cut Bank, Chester, Chinook, Conrad, and
Sunburst
220 AM MST Thu Dec 16 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS 
AFTERNOON TO 3 AM MST FRIDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 
5 PM MST FRIDAY...

* WHAT...For the Winter Weather Advisory, snow expected. Total snow 
  accumulations up to two inches, with up to 6 inches in the 
  mountains. Winds gusting as high as 40 mph. For the Wind Chill 
  Advisory, very low wind chills expected. Wind chills as low as 35 
  below zero.

* WHERE...A portion of north-central Montana.

* WHEN...For the Winter Weather Advisory, from 5 PM this afternoon 
  to 3 AM MST Friday. For the Wind Chill Advisory, from 10 PM this 
  evening to 5 PM MST Friday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact the Thursday evening and Friday morning commutes. The 
  dangerously low wind chills could cause frostbite on exposed skin 
  in as little as 10 minutes.

* ADDITIONAL DETAILS...Blowing and drifting snow will also reduce 
  visibility.

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.

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

&&

$$

MTZ012-013-048>051-054-170030-
/O.CON.KTFX.WW.Y.0045.211217T0400Z-211217T1200Z/
/O.CON.KTFX.WC.Y.0004.211217T0700Z-211217T1900Z/
Cascade-Chouteau-Southern Rocky Mountain Front-Eastern Teton-
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Fairfield, Lewistown Divide, Choteau, Great Falls, Lewistown,
Kings Hill Pass, Stanford, Bynum, Augusta, Cascade, Grass Range,
Dutton, Martinsdale, Big Sandy, Carter, Winifred, Fort Benton,
White Sulphur Springs, Belt, and Hobson
220 AM MST Thu Dec 16 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING 
TO 5 AM MST FRIDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 
NOON MST FRIDAY...

* WHAT...For the Winter Weather Advisory, snow expected. Total snow 
  accumulations up to two inches, with up to 6 inches in the 
  mountains. Winds gusting as high as 40 mph. For the Wind Chill 
  Advisory, very low wind chills expected. Wind chills as low as 30 
  below zero.

* WHERE...Portions of central and north central Montana.

* WHEN...For the Winter Weather Advisory, from 9 PM this evening to 
  5 AM MST Friday. For the Wind Chill Advisory, from Midnight 
  tonight to Noon MST Friday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact the Friday morning commute. The dangerously cold wind 
  chills could cause frostbite on exposed skin in as little as 30 
  minutes.

* ADDITIONAL DETAILS...Blowing and drifting snow will also reduce 
  visibility.

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.

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

&&

$$

MTZ014-170030-
/O.CON.KTFX.WW.Y.0045.211217T0400Z-211217T1200Z/
Central and Southern Lewis and Clark-
Including the following locations: Rogers Pass, Helena, MacDonald
Pass, Lincoln, and Flesher Pass
220 AM MST Thu Dec 16 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING 
TO 5 AM MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations up to 3 inches. 
  Winds gusting as high as 35 mph.

* WHERE...Central and Southern Lewis and Clark County.

* WHEN...From 9 PM this evening to 5 AM MST Friday.

* IMPACTS...Plan on slippery road conditions. 

* ADDITIONAL DETAILS...Blowing and drifting snow will also reduce 
  visibility. Wind chills may reach as low as 20 degrees below zero 
  in localized areas.

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.

&&

$$

CC
376 
WWUS45 KTFX 161545
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
845 AM MST Thu Dec 16 2021

MTZ008-015-052-053-055-162300-
/O.EXB.KTFX.WW.Y.0045.211217T0700Z-211217T1700Z/
Beaverhead-Madison-Jefferson-Broadwater-Gallatin-
Including the following locations: Bozeman Pass, Chief Joseph
Pass, Battle Ridge Pass, Townsend, Twin Bridges, West
Yellowstone, Targhee Pass, Raynolds Pass, Whitehall, Big Hole
Pass, Wisdom, Boulder Hill, Boulder, Montana City, Bozeman Apt,
Elk Park Pass, Toston, Ennis, Virginia City, Dillon, Winston,
Monida Pass, Norris Hill, Wise River, and City of Bozeman
845 AM MST Thu Dec 16 2021

...WINTER WEATHER ADVISORY IN EFFECT
FROM MIDNIGHT TONIGHT TO 10 AM MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations 1 to 3 inches. 
  Winds gusting as high as 40 mph.

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

* WHEN...From Midnight tonight to 10 AM MST Friday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Friday morning commute.

* ADDITIONAL DETAILS...Areas of blowing snow will reduce visibility 
  at times.

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.

&&

$$

MTZ009>011-044>047-162300-
/O.CON.KTFX.WW.Y.0045.211217T0000Z-211217T1000Z/
/O.CON.KTFX.WC.Y.0004.211217T0500Z-211218T0000Z/
Northern Rocky Mountain Front-Eastern Glacier-Hill-Toole-Liberty-
Eastern Pondera-Blaine-
Including the following locations: Hays, Harlem, Marias Pass,
Rocky Boy, Brady, Shelby, Browning, Rudyard, Heart Butte, Logan
Pass, Whitlash, Havre, Cut Bank, Chester, Chinook, Conrad, and
Sunburst
845 AM MST Thu Dec 16 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT
FROM 5 PM THIS AFTERNOON TO 3 AM MST FRIDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT
FROM 10 PM THIS EVENING TO 5 PM MST FRIDAY...

* WHAT...For the Winter Weather Advisory, snow expected. Total snow 
  accumulations 1 to 3 inches, with up to 6 inches in the mountains. 
  Winds gusting as high as 40 mph. For the Wind Chill Advisory, very 
  low wind chills expected. Wind chills as low as 35 below zero.

* WHERE...A portion of north central Montana.

* WHEN...For the Winter Weather Advisory, from 5 PM this afternoon 
  to 3 AM MST Friday. For the Wind Chill Advisory, from 10 PM this 
  evening to 5 PM MST Friday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact the Thursday evening and Friday morning commutes. The 
  dangerously cold wind chills could cause frostbite on exposed skin 
  in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ012-013-048>051-054-162300-
/O.CON.KTFX.WW.Y.0045.211217T0400Z-211217T1200Z/
/O.CON.KTFX.WC.Y.0004.211217T0700Z-211217T1900Z/
Cascade-Chouteau-Southern Rocky Mountain Front-Eastern Teton-
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Fairfield, Lewistown Divide, Choteau, Great Falls, Lewistown,
Kings Hill Pass, Stanford, Bynum, Augusta, Cascade, Grass Range,
Dutton, Martinsdale, Big Sandy, Carter, Winifred, Fort Benton,
White Sulphur Springs, Belt, and Hobson
845 AM MST Thu Dec 16 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT
FROM 9 PM THIS EVENING TO 5 AM MST FRIDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT
FROM MIDNIGHT TONIGHT TO NOON MST FRIDAY...

* WHAT...For the Winter Weather Advisory, snow expected. Total snow 
  accumulations 1 to 3 inches, with up to 6 inches in the mountains. 
  Winds gusting as high as 40 mph. For the Wind Chill Advisory, very 
  low wind chills expected. Wind chills as low as 30 below zero.

* WHERE...Portions of central and north central Montana.

* WHEN...For the Winter Weather Advisory, from 9 PM this evening to 
  5 AM MST Friday. For the Wind Chill Advisory, from Midnight 
  tonight to Noon MST Friday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact the Friday morning commute. The dangerously cold wind 
  chills could cause frostbite on exposed skin in as little as 30 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ014-162300-
/O.CON.KTFX.WW.Y.0045.211217T0400Z-211217T1200Z/
Central and Southern Lewis and Clark-
Including the following locations: Rogers Pass, Helena, MacDonald
Pass, Lincoln, and Flesher Pass
845 AM MST Thu Dec 16 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT
FROM 9 PM THIS EVENING TO 5 AM MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations 1 to 3 inches. 
  Winds gusting as high as 35 mph.

* WHERE...Central and Southern Lewis and Clark County.

* WHEN...From 9 PM this evening to 5 AM MST Friday.

* IMPACTS...Plan on slippery road conditions. 

* ADDITIONAL DETAILS...Blowing and drifting snow will also reduce 
  visibility. Wind chills may reach as low as 15 degrees below zero.

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
292 
WWUS45 KTFX 162111
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
211 PM MST Thu Dec 16 2021

MTZ009>011-044>047-171200-
/O.EXT.KTFX.WC.Y.0004.211217T0500Z-211218T1200Z/
/O.CON.KTFX.WW.Y.0045.211217T0000Z-211217T1000Z/
Northern Rocky Mountain Front-Eastern Glacier-Hill-Toole-Liberty-
Eastern Pondera-Blaine-
Including the following locations: Hays, Harlem, Marias Pass,
Rocky Boy, Brady, Shelby, Browning, Rudyard, Heart Butte, Logan
Pass, Whitlash, Havre, Cut Bank, Chester, Chinook, Conrad, and
Sunburst
211 PM MST Thu Dec 16 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 AM MST FRIDAY...
...WIND CHILL ADVISORY NOW IN EFFECT
FROM 10 PM THIS EVENING TO 5 AM MST SATURDAY...

* WHAT...For the Wind Chill Advisory, very cold wind chills 
  expected. Wind chills as low as 35 below zero. For the Winter 
  Weather Advisory, snow expected. Total snow accumulations 1 to 3 
  inches at lower elevations, and 3 to 6 inches in the mountains. 
  Winds gusting as high as 40 mph.

* WHERE...A portion of north central Montana.

* WHEN...For the Wind Chill Advisory, from 10 PM this evening to 5 
  AM MST Saturday. For the Winter Weather Advisory, until 3 AM MST 
  Friday.

* IMPACTS...Plan on slippery road conditions. Patchy blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact this evenings and Friday morning commutes. The 
  dangerously cold wind chills could cause frostbite on exposed skin 
  in as little as 10 minutes.

$$

MTZ012-013-048>051-054-171200-
/O.CON.KTFX.WW.Y.0045.211217T0400Z-211217T1200Z/
/O.CON.KTFX.WC.Y.0004.211217T0700Z-211217T1900Z/
Cascade-Chouteau-Southern Rocky Mountain Front-Eastern Teton-
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Fairfield, Lewistown Divide, Choteau, Great Falls, Lewistown,
Kings Hill Pass, Stanford, Bynum, Augusta, Cascade, Grass Range,
Dutton, Martinsdale, Big Sandy, Carter, Winifred, Fort Benton,
White Sulphur Springs, Belt, and Hobson
211 PM MST Thu Dec 16 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT
FROM 9 PM THIS EVENING TO 5 AM MST FRIDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT
FROM MIDNIGHT TONIGHT TO NOON MST FRIDAY...

* WHAT...For the Winter Weather Advisory, snow expected. Total snow 
  accumulations 1 to 3 inches at lower elevations, and 3 to 6 inches 
  in the mountains. Winds gusting as high as 40 mph. For the Wind 
  Chill Advisory, very cold wind chills expected. Wind chills as low 
  as 30 below zero.

* WHERE...Portions of central and north central Montana.

* WHEN...For the Winter Weather Advisory, from 9 PM this evening to 
  5 AM MST Friday. For the Wind Chill Advisory, from Midnight 
  tonight to Noon MST Friday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Friday morning commute. The 
  dangerously cold wind chills could cause frostbite on exposed skin 
  in as little as 30 minutes.

$$

MTZ014-171200-
/O.CON.KTFX.WW.Y.0045.211217T0400Z-211217T1200Z/
Central and Southern Lewis and Clark-
Including the following locations: Rogers Pass, Helena, MacDonald
Pass, Lincoln, and Flesher Pass
211 PM MST Thu Dec 16 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT
FROM 9 PM THIS EVENING TO 5 AM MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations 1 to 3 inches at 
  lower elevations, and 3 to 6 inches in the mountains. Winds 
  gusting as high as 35 mph.

* WHERE...Central and Southern Lewis and Clark County.

* WHEN...From 9 PM this evening to 5 AM MST Friday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could reduce visibility at times.

* ADDITIONAL DETAILS...Wind chills as low as 15 below zero.

$$

MTZ008-015-052-053-055-171200-
/O.CON.KTFX.WW.Y.0045.211217T0700Z-211217T1700Z/
Beaverhead-Madison-Jefferson-Broadwater-Gallatin-
Including the following locations: Bozeman Pass, Chief Joseph
Pass, Battle Ridge Pass, Townsend, Twin Bridges, West
Yellowstone, Targhee Pass, Raynolds Pass, Whitehall, Big Hole
Pass, Wisdom, Boulder Hill, Boulder, Montana City, Bozeman Apt,
Elk Park Pass, Toston, Ennis, Virginia City, Dillon, Winston,
Monida Pass, Norris Hill, Wise River, and City of Bozeman
211 PM MST Thu Dec 16 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT
FROM MIDNIGHT TONIGHT TO 10 AM MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations 1 to 3 inches at 
  lower elevations, and 3 to 6 inches in the mountains. Winds 
  gusting as high as 40 mph.

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

* WHEN...From Midnight tonight to 10 AM MST Friday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Friday morning commute.

* ADDITIONAL DETAILS...Areas of blowing snow could reduce visibility 
  at times.

$$

Brusda
159 
WWUS45 KTFX 170923
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
223 AM MST Fri Dec 17 2021

MTZ009>011-044>047-180000-
/O.EXT.KTFX.WW.Y.0045.000000T0000Z-211217T1300Z/
/O.CON.KTFX.WC.Y.0004.000000T0000Z-211218T1200Z/
Northern Rocky Mountain Front-Eastern Glacier-Hill-Toole-Liberty-
Eastern Pondera-Blaine-
Including the following locations: Hays, Harlem, Marias Pass,
Rocky Boy, Brady, Shelby, Browning, Rudyard, Heart Butte, Logan
Pass, Whitlash, Havre, Cut Bank, Chester, Chinook, Conrad, and
Sunburst
223 AM MST Fri Dec 17 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 AM MST EARLY THIS 
MORNING...
...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY...

* WHAT...For the Winter Weather Advisory, snow. Additional snow 
  accumulations up to one inch. Winds gusting as high as 35 mph. For 
  the Wind Chill Advisory, very cold wind chills. Wind chills as low 
  as 30 below zero.

* WHERE...A portion of north-central Montana.

* WHEN...For the Winter Weather Advisory, until 6 AM MST early this 
  morning. For the Wind Chill Advisory, until 5 AM MST Saturday.

* IMPACTS...Plan on slippery road conditions. Patchy blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact this morning's commute. The dangerously cold wind 
  chills could cause frostbite on exposed skin in as little as 10 
  minutes.

* ADDITIONAL DETAILS...Blowing and drifting snow will also reduce 
  visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ012-013-048>051-054-171900-
/O.EXT.KTFX.WW.Y.0045.000000T0000Z-211217T1300Z/
/O.CON.KTFX.WC.Y.0004.000000T0000Z-211217T1900Z/
Cascade-Chouteau-Southern Rocky Mountain Front-Eastern Teton-
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Fairfield, Lewistown Divide, Choteau, Great Falls, Lewistown,
Kings Hill Pass, Stanford, Bynum, Augusta, Cascade, Grass Range,
Dutton, Martinsdale, Big Sandy, Carter, Winifred, Fort Benton,
White Sulphur Springs, Belt, and Hobson
223 AM MST Fri Dec 17 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 AM MST EARLY THIS 
MORNING...
...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY...

* WHAT...For the Winter Weather Advisory, snow. Additional snow 
  accumulations up to one inch. Winds gusting as high as 35 mph. For 
  the Wind Chill Advisory, very cold wind chills. Wind chills as low 
  as 30 below zero.

* WHERE...Portions of central and north central Montana.

* WHEN...For the Winter Weather Advisory, until 6 AM MST early this 
  morning. For the Wind Chill Advisory, until Noon MST today.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could reduce visibility at times.

* ADDITIONAL DETAILS...Blowing and drifting snow will also reduce 
  visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ014-171300-
/O.EXT.KTFX.WW.Y.0045.000000T0000Z-211217T1300Z/
Central and Southern Lewis and Clark-
Including the following locations: Rogers Pass, Helena, MacDonald
Pass, Lincoln, and Flesher Pass
223 AM MST Fri Dec 17 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 AM MST EARLY THIS 
MORNING...

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

* WHERE...Central and Southern Lewis and Clark County.

* WHEN...Until 6 AM MST early this morning.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could reduce visibility at times.

* ADDITIONAL DETAILS...Wind chills as low as 15 below zero.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$

MTZ008-015-052-053-055-171700-
/O.CON.KTFX.WW.Y.0045.000000T0000Z-211217T1700Z/
Beaverhead-Madison-Jefferson-Broadwater-Gallatin-
Including the following locations: Bozeman Pass, Chief Joseph
Pass, Battle Ridge Pass, Townsend, Twin Bridges, West
Yellowstone, Targhee Pass, Raynolds Pass, Whitehall, Big Hole
Pass, Wisdom, Boulder Hill, Boulder, Montana City, Bozeman Apt,
Elk Park Pass, Toston, Ennis, Virginia City, Dillon, Winston,
Monida Pass, Norris Hill, Wise River, and City of Bozeman
223 AM MST Fri Dec 17 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM MST THIS 
MORNING...

* WHAT...Snow. Additional snow accumulations up to one inch. Winds 
  gusting as high as 35 mph.

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

* WHEN...Until 10 AM MST this morning.

* IMPACTS...Plan on slippery road conditions. Patchy blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact the Friday morning commute.

* ADDITIONAL DETAILS...Areas of blowing snow could reduce visibility 
  at times.

$$

AM
495 
WWUS45 KTFX 171221
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
521 AM MST Fri Dec 17 2021

MTZ009>011-044>047-180000-
/O.EXT.KTFX.WW.Y.0045.000000T0000Z-211217T1400Z/
/O.CON.KTFX.WC.Y.0004.000000T0000Z-211218T1200Z/
Northern Rocky Mountain Front-Eastern Glacier-Hill-Toole-Liberty-
Eastern Pondera-Blaine-
Including the following locations: Hays, Harlem, Marias Pass,
Rocky Boy, Brady, Shelby, Browning, Rudyard, Heart Butte, Logan
Pass, Whitlash, Havre, Cut Bank, Chester, Chinook, Conrad, and
Sunburst
521 AM MST Fri Dec 17 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 7 AM MST THIS 
MORNING...
...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY...

* WHAT...For the Winter Weather Advisory, up to an inch of 
  additional snow will be possible. Winds gusting as high as 35 mph. 
  For the Wind Chill Advisory, very cold wind chills. Wind chills as 
  low as 30 below zero.

* WHERE...A portion of north-central Montana.

* WHEN...For the Winter Weather Advisory, until 7 AM MST this 
  morning. For the Wind Chill Advisory, until 5 AM MST Saturday.

* IMPACTS...Plan on slippery road conditions. Patchy blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact this morning's commute. The dangerously cold wind 
  chills could cause frostbite on exposed skin in as little as 10 
  minutes.

* ADDITIONAL DETAILS...Blowing and drifting snow will also reduce 
  visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ012-013-048>051-054-171900-
/O.EXT.KTFX.WW.Y.0045.000000T0000Z-211217T1600Z/
/O.CON.KTFX.WC.Y.0004.000000T0000Z-211217T1900Z/
Cascade-Chouteau-Southern Rocky Mountain Front-Eastern Teton-
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Fairfield, Lewistown Divide, Choteau, Great Falls, Lewistown,
Kings Hill Pass, Stanford, Bynum, Augusta, Cascade, Grass Range,
Dutton, Martinsdale, Big Sandy, Carter, Winifred, Fort Benton,
White Sulphur Springs, Belt, and Hobson
521 AM MST Fri Dec 17 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 9 AM MST THIS 
MORNING...
...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY...

* WHAT...For the Winter Weather Advisory, snow. Additional snow 
  accumulations up to one inch. For the Wind Chill Advisory, very 
  cold wind chills. Wind chills as low as 30 below zero.

* WHERE...Portions of central and north central Montana.

* WHEN...For the Winter Weather Advisory, until 9 AM MST this 
  morning. For the Wind Chill Advisory, until Noon MST today.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions will impact the Friday morning commute. The dangerously 
  cold wind chills could cause frostbite on exposed skin in as 
  little as 30 minutes.

* ADDITIONAL DETAILS...Blowing and drifting snow will also reduce 
  visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ014-171600-
/O.EXT.KTFX.WW.Y.0045.000000T0000Z-211217T1600Z/
Central and Southern Lewis and Clark-
Including the following locations: Rogers Pass, Helena, MacDonald
Pass, Lincoln, and Flesher Pass
521 AM MST Fri Dec 17 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 9 AM MST THIS 
MORNING...

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

* WHERE...Central and Southern Lewis and Clark County.

* WHEN...Until 9 AM MST this morning.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions will impact the Friday morning commute.

* ADDITIONAL DETAILS...Wind chills as low as 15 below zero.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$

MTZ008-015-052-053-055-171700-
/O.CON.KTFX.WW.Y.0045.000000T0000Z-211217T1700Z/
Beaverhead-Madison-Jefferson-Broadwater-Gallatin-
Including the following locations: Bozeman Pass, Chief Joseph
Pass, Battle Ridge Pass, Townsend, Twin Bridges, West
Yellowstone, Targhee Pass, Raynolds Pass, Whitehall, Big Hole
Pass, Wisdom, Boulder Hill, Boulder, Montana City, Bozeman Apt,
Elk Park Pass, Toston, Ennis, Virginia City, Dillon, Winston,
Monida Pass, Norris Hill, Wise River, and City of Bozeman
521 AM MST Fri Dec 17 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM MST THIS 
MORNING...

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

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

* WHEN...Until 10 AM MST this morning.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Friday morning commute.

* ADDITIONAL DETAILS...Areas of blowing snow could reduce visibility 
  at times.

$$

AM
196 
WWUS45 KTFX 171346
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
646 AM MST Fri Dec 17 2021

MTZ009>011-044>047-180500-
/O.EXP.KTFX.WW.Y.0045.000000T0000Z-211217T1400Z/
/O.CON.KTFX.WC.Y.0004.000000T0000Z-211218T1200Z/
Northern Rocky Mountain Front-Eastern Glacier-Hill-Toole-Liberty-
Eastern Pondera-Blaine-
Including the following locations: Hays, Harlem, Marias Pass,
Rocky Boy, Brady, Shelby, Browning, Rudyard, Heart Butte, Logan
Pass, Whitlash, Havre, Cut Bank, Chester, Chinook, Conrad, and
Sunburst
646 AM MST Fri Dec 17 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 7 AM MST THIS MORNING...

* WHAT...Very cold wind chills. Wind chills as low as 30 below zero.

* WHERE...A portion of north central Montana.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...The dangerously cold wind chills could cause frostbite 
  on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...A few additional snow showers and areas of 
  blowing snow may still result in reduced visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ012-013-048>051-054-171900-
/O.CON.KTFX.WC.Y.0004.000000T0000Z-211217T1900Z/
/O.CON.KTFX.WW.Y.0045.000000T0000Z-211217T1600Z/
Cascade-Chouteau-Southern Rocky Mountain Front-Eastern Teton-
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Fairfield, Lewistown Divide, Choteau, Great Falls, Lewistown,
Kings Hill Pass, Stanford, Bynum, Augusta, Cascade, Grass Range,
Dutton, Martinsdale, Big Sandy, Carter, Winifred, Fort Benton,
White Sulphur Springs, Belt, and Hobson
646 AM MST Fri Dec 17 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST THIS 
MORNING...

* WHAT...For the Winter Weather Advisory, snow expected. Total snow 
  accumulations 1 to 3 inches at lower elevations, and 3 to 6 inches 
  in the mountains. Winds gusting as high as 40 mph. For the Wind 
  Chill Advisory, very cold wind chills expected. Wind chills as low 
  as 30 below zero.

* WHERE...Portions of central and north central Montana.

* WHEN...For the Wind Chill Advisory, until Noon MST today. For the 
  Winter Weather Advisory, until 9 AM MST this morning.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions will impact the Friday morning commute. The dangerously 
  cold wind chills could cause frostbite on exposed skin in as 
  little as 30 minutes.

* ADDITIONAL DETAILS...Blowing and drifting snow will also reduce 
  visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ008-015-052-053-055-171700-
/O.CON.KTFX.WW.Y.0045.000000T0000Z-211217T1700Z/
Beaverhead-Madison-Jefferson-Broadwater-Gallatin-
Including the following locations: Bozeman Pass, Chief Joseph
Pass, Battle Ridge Pass, Townsend, Twin Bridges, West
Yellowstone, Targhee Pass, Raynolds Pass, Whitehall, Big Hole
Pass, Wisdom, Boulder Hill, Boulder, Montana City, Bozeman Apt,
Elk Park Pass, Toston, Ennis, Virginia City, Dillon, Winston,
Monida Pass, Norris Hill, Wise River, and City of Bozeman
646 AM MST Fri Dec 17 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM MST THIS 
MORNING...

* WHAT...Snow expected. Total snow accumulations 1 to 3 inches at 
  lower elevations, and 3 to 6 inches in the mountains. Winds 
  gusting as high as 40 mph.

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

* WHEN...Until 10 AM MST this morning.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Friday morning commute.

* ADDITIONAL DETAILS...Areas of blowing snow could reduce visibility 
  at times.

$$

MTZ014-171600-
/O.CON.KTFX.WW.Y.0045.000000T0000Z-211217T1600Z/
Central and Southern Lewis and Clark-
Including the following locations: Rogers Pass, Helena, MacDonald
Pass, Lincoln, and Flesher Pass
646 AM MST Fri Dec 17 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST THIS 
MORNING...

* WHAT...Snow expected. Total snow accumulations 1 to 3 inches at 
  lower elevations, and 3 to 6 inches in the mountains. Winds 
  gusting as high as 35 mph.

* WHERE...Central and Southern Lewis and Clark County.

* WHEN...Until 9 AM MST this morning.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions will impact the Friday morning commute.

* ADDITIONAL DETAILS...Wind chills as low as 15 below zero.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$

Ludwig
889 
WWUS45 KTFX 171532
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
832 AM MST Fri Dec 17 2021

MTZ008-015-052-053-055-171645-
/O.CAN.KTFX.WW.Y.0045.000000T0000Z-211217T1700Z/
Beaverhead-Madison-Jefferson-Broadwater-Gallatin-
Including the following locations: Bozeman Pass, Chief Joseph
Pass, Battle Ridge Pass, Townsend, Twin Bridges, West
Yellowstone, Targhee Pass, Raynolds Pass, Whitehall, Big Hole
Pass, Wisdom, Boulder Hill, Boulder, Montana City, Bozeman Apt,
Elk Park Pass, Toston, Ennis, Virginia City, Dillon, Winston,
Monida Pass, Norris Hill, Wise River, and City of Bozeman
832 AM MST Fri Dec 17 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has largely ended across the area. Remain alert for areas of 
blowing snow.

$$

MTZ012-013-048>051-054-171900-
/O.EXP.KTFX.WW.Y.0045.000000T0000Z-211217T1600Z/
/O.CON.KTFX.WC.Y.0004.000000T0000Z-211217T1900Z/
Cascade-Chouteau-Southern Rocky Mountain Front-Eastern Teton-
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Fairfield, Lewistown Divide, Choteau, Great Falls, Lewistown,
Kings Hill Pass, Stanford, Bynum, Augusta, Cascade, Grass Range,
Dutton, Martinsdale, Big Sandy, Carter, Winifred, Fort Benton,
White Sulphur Springs, Belt, and Hobson
832 AM MST Fri Dec 17 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 AM MST THIS MORNING...

* WHAT...Very cold wind chills. Wind chills as low as 30 below zero.

* WHERE...Portions of central and north central Montana.

* WHEN...Until Noon MST today.

* IMPACTS...The dangerously cold wind chills could cause frostbite 
  on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Wear appropriate clothing, a hat, and gloves.

&&

$$

MTZ014-171645-
/O.EXP.KTFX.WW.Y.0045.000000T0000Z-211217T1600Z/
Central and Southern Lewis and Clark-
Including the following locations: Rogers Pass, Helena, MacDonald
Pass, Lincoln, and Flesher Pass
832 AM MST Fri Dec 17 2021

...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 AM MST THIS MORNING...

Snow has largely ended across the area. Remain alert for areas of 
blowing snow.

$$

MTZ009>011-044>047-180645-
/O.CON.KTFX.WC.Y.0004.000000T0000Z-211218T1200Z/
Northern Rocky Mountain Front-Eastern Glacier-Hill-Toole-Liberty-
Eastern Pondera-Blaine-
Including the following locations: Hays, Harlem, Marias Pass,
Rocky Boy, Brady, Shelby, Browning, Rudyard, Heart Butte, Logan
Pass, Whitlash, Havre, Cut Bank, Chester, Chinook, Conrad, and
Sunburst
832 AM MST Fri Dec 17 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY...

* WHAT...Very cold wind chills. Wind chills as low as 30 below zero.

* WHERE...A portion of north central Montana.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...The dangerously cold wind chills could cause frostbite 
  on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Ludwig
885 
WWUS45 KTFX 171838
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1138 AM MST Fri Dec 17 2021

MTZ012-013-048>051-054-171945-
/O.EXP.KTFX.WC.Y.0004.000000T0000Z-211217T1900Z/
Cascade-Chouteau-Southern Rocky Mountain Front-Eastern Teton-
Judith Basin-Fergus-Meagher-
Including the following locations: Deep Creek Pass, Raynesford,
Fairfield, Lewistown Divide, Choteau, Great Falls, Lewistown,
Kings Hill Pass, Stanford, Bynum, Augusta, Cascade, Grass Range,
Dutton, Martinsdale, Big Sandy, Carter, Winifred, Fort Benton,
White Sulphur Springs, Belt, and Hobson
1138 AM MST Fri Dec 17 2021

...WIND CHILL ADVISORY WILL EXPIRE AT NOON MST TODAY...

Temperatures will continue to rise this afternoon with generally 
light winds. While it will get briefly cold this evening, widespread 
wind chills of -20 are not expected.

$$

MTZ009>011-044>047-180945-
/O.CON.KTFX.WC.Y.0004.000000T0000Z-211218T1200Z/
Northern Rocky Mountain Front-Eastern Glacier-Hill-Toole-Liberty-
Eastern Pondera-Blaine-
Including the following locations: Hays, Harlem, Marias Pass,
Rocky Boy, Brady, Shelby, Browning, Rudyard, Heart Butte, Logan
Pass, Whitlash, Havre, Cut Bank, Chester, Chinook, Conrad, and
Sunburst
1138 AM MST Fri Dec 17 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY...

* WHAT...Very cold wind chills. Wind chills as low as 30 below zero.

* WHERE...A portion of north central Montana.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...The dangerously cold wind chills could cause frostbite 
  on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Ludwig
219 
WWUS45 KTFX 172054
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
154 PM MST Fri Dec 17 2021

MTZ009-181200-
/O.NEW.KTFX.WS.A.0008.211219T0000Z-211219T1800Z/
/O.CON.KTFX.WC.Y.0004.000000T0000Z-211218T1200Z/
Northern Rocky Mountain Front-
Including the following locations: Heart Butte, Browning, Marias
Pass, and Logan Pass
154 PM MST Fri Dec 17 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY...
...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH 
SUNDAY MORNING FOR ELEVATIONS ABOVE 4500 FEET...

* WHAT...For the Winter Storm Watch for elevations above 4500 feet, 
  heavy snow possible. Total snow accumulations up to 8 inches 
  possible. Winds could gust as high as 60 mph. For the Wind Chill 
  Advisory, very cold wind chills. Wind chills as low as 20 below 
  zero.

* WHERE...Northern Rocky Mountain Front.

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

* IMPACTS...Heavy snow and gusty winds may make travel difficult and 
  treacherous. The dangerously cold wind chills could cause 
  frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

MTZ010-011-044>047-181200-
/O.CON.KTFX.WC.Y.0004.000000T0000Z-211218T1200Z/
Eastern Glacier-Hill-Toole-Liberty-Eastern Pondera-Blaine-
Including the following locations: Hays, Harlem, Brady, Shelby,
Rudyard, Rocky Boy, Whitlash, Havre, Cut Bank, Chester, Chinook,
Conrad, and Sunburst
154 PM MST Fri Dec 17 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY...

* WHAT...Very cold wind chills. Wind chills as low as 30 below zero.

* WHERE...A portion of north central Montana.

* WHEN...Until 5 AM MST Saturday.

* IMPACTS...The dangerously cold wind chills could cause frostbite 
  on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ048-181200-
/O.NEW.KTFX.WS.A.0008.211219T0000Z-211219T1800Z/
Southern Rocky Mountain Front-
154 PM MST Fri Dec 17 2021

...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH 
SUNDAY MORNING FOR ELEVATIONS ABOVE 4500 FEET...

* WHAT...Heavy snow possible for elevations above 4500 feet. Total 
  snow accumulations up to 8 inches possible. Winds could gust as 
  high as 60 mph.

* WHERE...Southern Rocky Mountain Front.

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

* IMPACTS...Whiteout conditions are possible and may make travel 
  treacherous and potentially life-threatening. Plan on slippery 
  road conditions. Strong winds could cause extensive damage to 
  trees and power lines.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.


&&

$$

Ludwig
088 
WWUS45 KTFX 181008
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
308 AM MST Sat Dec 18 2021

MTZ009-182300-
/O.CAN.KTFX.WC.Y.0004.000000T0000Z-211218T1200Z/
/O.UPG.KTFX.WS.A.0008.211219T0000Z-211219T1800Z/
/O.NEW.KTFX.WS.W.0008.211218T1900Z-211219T1900Z/
Northern Rocky Mountain Front-
Including the following locations: Logan Pass, Heart Butte,
Browning, and Marias Pass
308 AM MST Sat Dec 18 2021

...WINTER STORM WARNING IN EFFECT FROM NOON TODAY TO NOON MST SUNDAY 
FOR ELEVATIONS ABOVE 4500 FEET...

...WIND CHILL ADVISORY IS CANCELLED...

* WHAT...Heavy snow expected for elevations above 4500 feet. Total 
  snow accumulations between 3 and 6 inches at lower elevations with 
  up to 18 inches likely at higher elevations. Winds gusting as high 
  as 85 mph.

* WHERE...Northern Rocky Mountain Front.

* WHEN...From Noon today to Noon MST Sunday.

* IMPACTS...Visibilities may drop below 1/4 mile due to falling and 
  blowing snow. Travel could be very difficult. Widespread 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 can 
be obtained by calling 5 1 1 or visiting the MDT Road Report website.

&&

$$

MTZ010-011-044>047-181115-
/O.CAN.KTFX.WC.Y.0004.000000T0000Z-211218T1200Z/
Eastern Glacier-Hill-Toole-Liberty-Eastern Pondera-Blaine-
Including the following locations: Hays, Harlem, Brady, Shelby,
Rudyard, Rocky Boy, Whitlash, Havre, Cut Bank, Chester, Chinook,
Conrad, and Sunburst
308 AM MST Sat Dec 18 2021

...WIND CHILL ADVISORY IS CANCELLED...

Temperatures will gradually warm this morning with winds remaining 
generally below 10 mph. As such, the Wind Chill Advisory is 
cancelled.

$$

MTZ048-182300-
/O.UPG.KTFX.WS.A.0008.211219T0000Z-211219T1800Z/
/O.NEW.KTFX.WS.W.0008.211218T1900Z-211219T1900Z/
Southern Rocky Mountain Front-
308 AM MST Sat Dec 18 2021

...WINTER STORM WARNING IN EFFECT FROM NOON TODAY TO NOON MST SUNDAY 
FOR ELEVATIONS ABOVE 4500 FEET...

* WHAT...Heavy snow expected for elevations above 4500 feet. Total 
  snow accumulations between 2 and 4 inches at lower elevations with 
  up to 12 inches likely at higher elevations.

* WHERE...Southern Rocky Mountain Front.

* WHEN...From Noon today to Noon MST Sunday.

* IMPACTS...Visibilities may drop below 1/4 mile due to falling and 
  blowing snow. Travel could be very difficult. Widespread 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 can 
be obtained by calling 5 1 1 or visiting the MDT Road Report website.

&&

$$

mpj

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 14, 5:41 PM MSTSpecial Weather StatementTFXChouteau64 min
Dec 15, 7:53 AM MSTWinter Weather AdvisoryTFX67 min
Dec 15, 1:21 PM MSTWinter Weather AdvisoryTFX44 hr

Nearby

Wind Chill Advisories in Montana, 2021Every wind chill advisory 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.