A very strong upper low and trough moved out of the Great Basin area northeast across Wyoming during this time period. At the same time, a surface low moved across Wyoming into South Dakota. As a result of all the above, a deep, easterly upslope flow was in place across the southern and south central portions of Montana. During the first 24 to 36 hours of the event, conditions were unstable with steep lapse rates. This resulted in periods of very intense snowfall during the evening and overnight hours of the 24th and through the day on the 25th.

Winter Storm in SOUTHERN BIG HORN, MONTANA
From 24-MAR-23 20:00:00 to 27-MAR-23 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 8 to 16 inches was reported across the area. Severe travel conditions were reported on Interstate 90 and Highway 212.

Winter Storm in MELVILLE FOOTHILLS, MONTANA
From 24-MAR-23 17:00:00 to 27-MAR-23 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 10 to 18 inches was reported across the area.

Winter Storm in NORTHERN CARBON, MONTANA
From 24-MAR-23 18:00:00 to 27-MAR-23 09:20:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 6 to 14 inches was reported across the area.

Winter Storm in NORTHERN SWEET GRASS, MONTANA
From 24-MAR-23 17:00:00 to 27-MAR-23 09:20:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 6 to 16 inches, along with severe driving conditions, were reported across the area.

Winter Storm in SOUTHEASTERN CARBON, MONTANA
From 24-MAR-23 18:00:00 to 27-MAR-23 09:20:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall up to 16 inches occurred across the Bridger area.

Winter Storm in LIVINGSTON AREA, MONTANA
From 24-MAR-23 17:00:00 to 27-MAR-23 09:20:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 6 to 18 inches was reported across the area.

Winter Storm in PARADISE VALLEY, MONTANA
From 24-MAR-23 17:00:00 to 27-MAR-23 09:20:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall up to 22 inches was reported just south of Livingston.

Winter Storm in BIGHORN CANYON, MONTANA
From 24-MAR-23 20:00:00 to 27-MAR-23 09:20:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The Fort Smith area received around 9 inches of snow.

Winter Storm in RED LODGE FOOTHILLS, MONTANA
From 24-MAR-23 14:00:00 to 27-MAR-23 09:20:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The Red Lodge area received around 40 inches of snow.

Winter Storm in PRYOR/NORTHERN BIGHORN MOUNTAINS, MONTANA
From 24-MAR-23 12:00:00 to 27-MAR-23 09:20:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

At least 12 inches of snow occurred across the area.

Winter Storm in CRAZY MOUNTAINS, MONTANA
From 24-MAR-23 14:00:00 to 27-MAR-23 09:20:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Snowfall amounts between 12 and 24 inches occurred across the area.

Winter Storm in ABSAROKA / BEARTOOTH MOUNTAINS, MONTANA
From 24-MAR-23 12:00:00 to 27-MAR-23 09:20:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The mountains received 3 to 5 feet of new snow.

Winter Storm in BEARTOOTH FOOTHILLS, MONTANA
From 24-MAR-23 13:00:00 to 27-MAR-23 09:20:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts up to 23 inches occurred across the Fishtail area.

Winter Storm in NORTHERN STILLWATER, MONTANA
From 24-MAR-23 17:00:00 to 27-MAR-23 09:20:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall of 6 to 15 inches was reported across the area.