Pacific moisture moving over the top of an arctic airmass produced significant snow accumulations across most of South Central Montana.

Winter Storm in ABSAROKEE / BEARTOOTH MOUNTAINS, MONTANA
From 17-JAN-12 20:00:00 to 20-JAN-12 03:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

White Mill and Monument Peak snotels received about 32 to 33 inches of snow.

Winter Storm in CUSTER, MONTANA
From 18-JAN-12 13:00:00 to 20-JAN-12 01:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Volborg received 10 inches of snow.

Winter Storm in CARTER, MONTANA
From 18-JAN-12 16:00:00 to 20-JAN-12 03:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Parts of southwest Carter County received 7 to 11 inches of snow.

Winter Storm in POWDER RIVER, MONTANA
From 18-JAN-12 16:00:00 to 20-JAN-12 03:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Northwest portions of the county reported 7 to 11 inches of snow.

Winter Storm in NORTHERN SWEET GRASS, MONTANA
From 18-JAN-12 15:00:00 to 20-JAN-12 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Big Timber area received 6 to 8 inches of snow.

Winter Storm in NORTHERN STILLWATER, MONTANA
From 18-JAN-12 12:00:00 to 20-JAN-12 05:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts of 6 to 8 inches were reported across the area.

Winter Storm in JUDITH GAP, MONTANA
From 18-JAN-12 05:00:00 to 20-JAN-12 00:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts of 11-12 inches were reported around Harlowton and Judith Gap.

Winter Storm in SOUTHERN ROSEBUD, MONTANA
From 18-JAN-12 07:00:00 to 20-JAN-12 03:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts of 7 to 10 inches were reported across the area.

Winter Storm in GOLDEN VALLEY, MONTANA
From 18-JAN-12 05:00:00 to 20-JAN-12 01:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts of 6 to 10 inches were common across the area.

Winter Storm in SOUTHERN BIG HORN, MONTANA
From 18-JAN-12 17:00:00 to 19-JAN-12 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts of 6 to 10 inches were reported across the area.

Winter Storm in YELLOWSTONE, MONTANA
From 18-JAN-12 06:00:00 to 20-JAN-12 03:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts around 6 inches were reported.

Winter Storm in TREASURE, MONTANA
From 18-JAN-12 04:00:00 to 20-JAN-12 03:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts up to 20 inches were reported in and around Hysham.

Winter Storm in MUSSELSHELL, MONTANA
From 18-JAN-12 04:00:00 to 20-JAN-12 02:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts of 15 to 18 inches were reported near Roundup.

Winter Storm in SOUTHERN WHEATLAND, MONTANA
From 18-JAN-12 05:00:00 to 20-JAN-12 01:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts around 12 inches were reported across the area.

Winter Storm in CRAZY MOUNTAINS, MONTANA
From 17-JAN-12 22:00:00 to 20-JAN-12 03:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

South Fork Shields snotel received around 13 inches of snow.

Winter Storm in NORTHERN BIG HORN, MONTANA
From 18-JAN-12 12:00:00 to 19-JAN-12 00:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts up to 9 inches were reported across the area.

Winter Storm in NORTHERN ROSEBUD, MONTANA
From 18-JAN-12 20:00:00 to 20-JAN-12 03:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts of 8 to 16 inches were reported across the area.