The final winter storm of the month brought very heavy high mountain snow as well as strong gusty winds in the 40 to 60 mph range which again closed many roads.

Winter Storm in BLACKFOOT MOUNTAINS, IDAHO
From 25-FEB-21 20:00:00 to 28-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Sheep Mountain SNOTEL estimated 13.3 inches of snow.   The Bone COOP site measured 5 inches of snow.  Bonneville County Sherris Department closed Bone Road south of Lincoln Road on the 26th.

Winter Storm in BEAR RIVER RANGE, IDAHO
From 25-FEB-21 20:00:00 to 28-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Storm total snowfall estimated at SNOTEL sites was 21 inches at Emigrant Summit and 24 inches at Franklin Basin.

Winter Storm in BIG HOLE MOUNTAINS, IDAHO
From 25-FEB-21 21:00:00 to 28-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Pine Creek Pass SNOTEL estimated 12.3 inches of snow.

Winter Storm in BIG LOST HIGHLANDS-COPPER BASIN, IDAHO
From 25-FEB-21 20:00:00 to 28-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Heavy snow was limited to elevations above 7 thousand feet.   SNOTEL amounts were:  30.4 inches at Garfield Ranger Station, 19 inches at Smiley Mountain, and 12.4 inches at Stickney Mill.

Winter Storm in CARIBOU RANGE, IDAHO
From 25-FEB-21 20:00:00 to 28-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Snow amounts estimated at SNOTEL sites were:  17 inches Giveout, 13 inches Slug Creek Divide, and 16 inches at Somsen Ranch.    The Swan Valley COOP site received 4 inches.  US Highway 26 closed on the 26th due to 45 to 55 mph wind gusts from Ririe to Swan Valley.

Winter Storm in CENTENNIAL MOUNTAINS-ISLAND PARK, IDAHO
From 25-FEB-21 20:00:00 to 28-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Very heavy snow fell above 7 thousand feet with the following SNOTEL snowfall estimates:  Crab Creek 10 inches, Island Park 23 inches, and White Elephant 30.5 inches.   The Island Park COOP observer recorded 6 inches.

Winter Storm in EASTERN MAGIC VALLEY, IDAHO
From 27-FEB-21 00:00:00 to 27-FEB-21 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Interstate 84 was closed from the interstate 86 interchange south to exit 263.   Winds were gusting up to 55 mph causing whiteouts.

Winter Storm in FRANK CHURCH WILDERNESS, IDAHO
From 25-FEB-21 20:00:00 to 28-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Snowfall was estimated at 14 inches at the Mill Creek Summit SNOTEL.

Winter Storm in MARSH AND ARBON HIGHLANDS, IDAHO
From 25-FEB-21 20:00:00 to 28-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Heavy snow was above 7 thousand feet.   The Sedgwick Peak SNOTEL snowfall was estimated at 24.6 inches.   Only 2 inches fell at the McCammon and Inkom COOP sites.  8 inches fell at the Mink Creek Nordic Center.

Winter Storm in LOST RIVER RANGE, IDAHO
From 25-FEB-21 20:00:00 to 28-FEB-21 07:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Snowfall estimated at the Hilt's Creek SNOTEL site was 13 inches.

Winter Storm in RAFT RIVER REGION, IDAHO
From 26-FEB-21 20:00:00 to 27-FEB-21 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Interstate 84 was closed at the interstate 86 interchange south to exit 263 at Juniper on the 27th.   Winds were gusting up to 60 mph causing drifting over the road and whiteout conditions.

Winter Storm in SAWTOOTH-STANLEY BASIN, IDAHO
From 25-FEB-21 20:00:00 to 28-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Heavy snowfall was limited to very high elevations.   The Stanley COOP site only measured 2 inches of snow.   Snowfall was estimated at 33.5 inches at the Vienna Mine SNOTEL site.

Winter Storm in SOUTHERN HILLS-ALBION MOUNTAINS, IDAHO
From 25-FEB-21 20:00:00 to 28-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Snowfall estimates at the SNOTEL sites were 18 inches at Bostetter Ranger Station and 25 inches at Howell Canyon.

Winter Storm in SUN VALLEY REGION, IDAHO
From 25-FEB-21 20:00:00 to 28-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

High elevation snowfall estimates at SNOTEL sites were:  15 inches at Dollarhide Summit, 12 inches at Galena, 17 inches at Galena Summit, and 22 inches at Lost Wood Divide.

Winter Storm in TETON VALLEY, IDAHO
From 25-FEB-21 20:00:00 to 28-FEB-21 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Two inches of snow fell in Ashton.   Wind gusts of 40 to 50 mph caused whiteout conditions and road closure on the morning of the 26th into the day on the 27th.   State Highway 32 was closed from Ashton to Tetonia.   State Highway 33 was closed from Newdale to Tetonia.   Ashton Elementary and North Fremont Jr and Sr High Schools were released at 1045 AM on the 26th due to worsening road conditions.

Winter Storm in UPPER SNAKE RIVER PLAIN, IDAHO
From 25-FEB-21 20:00:00 to 27-FEB-21 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

US Highway 26 was closed on the 26th into the 27th from Ririe to Swan Valley.   Sate Highway 33 was closed as well from Newdale to Tetonia.   Bonneville County Sheriff's office closed Bone Road South of Lincoln Road as well as Sunnyside Road east of Founder's Point at approximately 60th East.   Idaho Falls received 2 inches of snow and combined with 40 to 50 mph wind gusts to reduce visibilities and make snow removal impossible due to blowing and drifting.