Another cold trough moved into the state for more sub-zero temperatures and wind chills. Warning criteria wind chill values (-40F) were more common with this surge than the previous one as a 1044 mb surface high moved southward from the Canadian Prairies. The cold air was followed by strong westerly flow, which brought another round of strong surface winds to the plains and portions of southwest MT. Temperatures remained below freezing along the Rocky for a portion of the wind event and brought another round of ground blizzard conditions.

Extreme Cold/Wind Chill in TOOLE, MONTANA
From 04-JAN-22 07:50:00 to 04-JAN-22 07:50:00 (MST-7)
Reported by: Department of Highways

MDT Sweetgrass station recorded a -45F wind chill.

Extreme Cold/Wind Chill in FERGUS, MONTANA
From 04-JAN-22 09:58:00 to 04-JAN-22 09:58:00 (MST-7)
Reported by: AWOS

K1OM recorded a -44F wind chill.

Extreme Cold/Wind Chill in BLAINE, MONTANA
From 04-JAN-22 21:45:00 to 04-JAN-22 21:45:00 (MST-7)
Reported by: Mesonet

Mesonet station 7 SE Hogeland recorded a -46F wind chill.

Extreme Cold/Wind Chill in LIBERTY, MONTANA
From 04-JAN-22 08:55:00 to 04-JAN-22 08:55:00 (MST-7)
Reported by: Mesonet

Mesonet station 9 N Joplin recorded a -44F wind chill.

Extreme Cold/Wind Chill in NORTH ROCKY MOUNTAIN FRONT, MONTANA
From 04-JAN-22 04:24:00 to 04-JAN-22 04:24:00 (MST-7)
Reported by: Department of Highways

MDT Browning station recorded a -40F wind chill.

Extreme Cold/Wind Chill in EASTERN PONDERA, MONTANA
From 04-JAN-22 09:00:00 to 04-JAN-22 09:00:00 (MST-7)
Reported by: Mesonet

Mesonet station near Conrad (6 NW Ledger) recorded a -40F wind chill.

Extreme Cold/Wind Chill in SOUTHERN ROCKY MOUNTAIN FRONT, MONTANA
From 04-JAN-22 05:42:00 to 04-JAN-22 05:42:00 (MST-7)
Reported by: Department of Highways

MDT Pendroy station recorded a -42F wind chill.

Extreme Cold/Wind Chill in JUDITH BASIN, MONTANA
From 04-JAN-22 10:55:00 to 04-JAN-22 10:55:00 (MST-7)
Reported by: Department of Highways

MDT Geyser station recorded a -47F wind chill.

Extreme Cold/Wind Chill in CASCADE, MONTANA
From 04-JAN-22 10:05:00 to 04-JAN-22 10:05:00 (MST-7)
Reported by: Department of Highways

MDT Monarch station measured a -43F wind chill.

Extreme Cold/Wind Chill in HILL, MONTANA
From 04-JAN-22 07:31:00 to 04-JAN-22 07:31:00 (MST-7)
Reported by: Mesonet

Mesonet station 27 N Havre recorded a -46F wind chill.

Extreme Cold/Wind Chill in EASTERN GLACIER, MONTANA
From 04-JAN-22 01:30:00 to 04-JAN-22 01:30:00 (MST-7)
Reported by: ASOS

KCTB recorded a -40F wind chill.

High Wind in CASCADE, MONTANA
From 07-JAN-22 12:30:00 to 07-JAN-22 12:30:00 (MST-7)
Magnitude: 51.00 MG
Reported by: Mesonet

Mesonet Cascade station measured a 51 kt (59 mph) non-thunderstorm wind gust.

Extreme Cold/Wind Chill in HILL, MONTANA
From 06-JAN-22 07:53:00 to 06-JAN-22 07:53:00 (MST-7)
Reported by: ASOS

KHVR recorded a -44F wind chill.

High Wind in SOUTHERN ROCKY MOUNTAIN FRONT, MONTANA
From 07-JAN-22 07:31:00 to 07-JAN-22 07:31:00 (MST-7)
Magnitude: 70.00 MG
Reported by: Mesonet

Mesonet station Dellwo measured a 70 kt (81 mph) non-thunderstorm wind gust.

High Wind in NORTH ROCKY MOUNTAIN FRONT, MONTANA
From 07-JAN-22 06:45:00 to 07-JAN-22 06:45:00 (MST-7)
Magnitude: 54.00 MG
Reported by: Mesonet

Mesonet station 5 SE Browning measured a 54 kt (62 mph) non-thunderstorm wind gust.

High Wind in EASTERN GLACIER, MONTANA
From 07-JAN-22 12:56:00 to 07-JAN-22 12:56:00 (MST-7)
Magnitude: 53.00 MG
Reported by: ASOS

KCTB measured a 53 kt (61 mph) non-thunderstorm wind gust.

High Wind in MADISON, MONTANA
From 07-JAN-22 07:04:00 to 07-JAN-22 07:04:00 (MST-7)
Magnitude: 53.00 MG
Reported by: Department of Highways

MDT station at Raynold's Pass measured a 53 kt (61 mph) non-thunderstorm wind gust.

Winter Storm in SOUTHERN ROCKY MOUNTAIN FRONT, MONTANA
From 06-JAN-22 16:00:00 to 07-JAN-22 22:00:00 (MST-7)
Reported by: SNOTEL

Automated equipment at Copper Camp estimated an event total of 9 inches of new snow.

Blizzard in NORTH ROCKY MOUNTAIN FRONT, MONTANA
From 07-JAN-22 03:21:00 to 07-JAN-22 07:00:00 (MST-7)
Reported by: Department of Highways

MDT reports severe driving conditions in the browning and East glacier areas due to blizzard conditions. Multiple road closures were reported and tribal offices closed operations for the day.

Winter Storm in NORTH ROCKY MOUNTAIN FRONT, MONTANA
From 06-JAN-22 15:00:00 to 07-JAN-22 20:00:00 (MST-7)
Reported by: SNOTEL

Automated equipment at Badger Pass estimated an event total of 10 inches of new snow. Equipment at Mount Lockhart estimated an event total of 10 inches of new snow.  Equipment at Waldron estimated an event total of 8 inches of new snow.