Heavy snow and strong winds occurred for a three day period mainly over the weekend.  The worst conditions were in the Upper Snake Highlands where two feet of snow fell in the Island Park area fell with many road closures.   A dust storm closed interstate 15 north of Idaho Falls on the 25th.

Heavy Snow in SOUTH CENTRAL HIGHLANDS, IDAHO
From 24-FEB-18 04:00:00 to 26-FEB-18 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

At the Bostetter Ranger Station SNOTEL site 11 inches of snow fell.   8 inches of snow fell at the Pomerelle Ski Resort.

Winter Storm in LOWER SNAKE RIVER PLAIN, IDAHO
From 25-FEB-18 20:00:00 to 26-FEB-18 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Snow and wind caused very difficult travel in the Lower Snake River Plain on Monday the 26th.   Although snow amounts were only 1 inch in American Falls and 4 inches in Aberdeen as reported by COOP observers the American Falls School District 381, Aberdeen School District 58, and snake River School District 52 were all closed on February 26th.

Dust Storm in UPPER SNAKE RIVER PLAIN, IDAHO
From 25-FEB-18 10:00:00 to 25-FEB-18 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Interstate 15 was closed due to zero visibility caused by blowing dust from wind gusts of 50 mph from exits 118 through 143.

Heavy Snow in CARIBOU HIGHLANDS, IDAHO
From 24-FEB-18 04:00:00 to 26-FEB-18 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The Pebble Creek Ski Resort near Inkom recorded 23 inches of snow over the weekend beginning on the 24th.   SNOTEL amounts were 8 inches at Sedgwick Peak, 6 inches at Somsen Ranch, 8 inches at Sheep Mountain.   84 inches of snow reported on W Buckskin Road overnight on the 25th into the 26th 7 miles north northwest of Inkom.

Heavy Snow in WASATCH MOUNTAINS/IADHO PORTION, IDAHO
From 24-FEB-18 04:00:00 to 26-FEB-18 07:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Nine inches of snow fell at the Emigrant Summit SNOTEL with 13 inches at Giveout.

Heavy Snow in BIG AND LITTLE WOOD RIVER REGION, IDAHO
From 24-FEB-18 04:00:00 to 26-FEB-18 07:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The following snow amounts were recorded at SNOTEL sites:  16 inches Garfield Ranger Station, 11 inches Galena Summit, 13 inches Lost Wood Divide, 9 inches Swede Peak, and 10 inches Vienna Mine.   8 to 10 inches of snow fell in the city of Ketchum from many public reports with 5 to 7 inches in Hailey and Bellevue.

Winter Storm in UPPER SNAKE HIGHLANDS, IDAHO
From 24-FEB-18 05:00:00 to 26-FEB-18 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Very heavy snow combined with strong winds to close the following roads on the 25th:   Highway 32 from Ashton to Tetonia, Highway 87 from Raynolds Pass to the Junction of Highway 20 near Henry's Lake, Highway 20 from Ashton to the Montana border, and interstate 15 from Dubois to the Montana border.   Whiteout conditions were reported with several slide offs.  Snow amounts of 10 inches at Island Park SNOTEL and 25 inches at White elephant SNOTEL were reported.   7 inches was reported by the Dubois COOP observer.   The Island Park COOP observer recorded 26.4 inches and Harriman State Park carried 24 inches.  The Fremont County School District 215 and Teton School District 401 were both closed on the 26th due to the difficult travel conditions.