Weekend snowstorm headed for East Idaho

February 9, 2019

A strong low pressure system moving into the northern Rocky Mountains from the west is expected to bring periods of moderate to heavy snow, as well as strong winds, to southeast Idaho this weekend.

While light snow showers may begin as early as tonight, the most significant snow and wind is expected Saturday night and Sunday.

Snow accumulations Saturday night and Sunday are expected to range from 1 to 3 inches across the eastern Magic Valley and Raft River region, to 2 to 4 inches along the Interstate 86 and Interstate 15 corridors of the Snake Plain including American Falls, Pocatello, Blackfoot, and Idaho Falls, to 4 to 6 inches across the Arco and Mud Lake Deserts and lower Big Lost Valley including Mackay and Arco. Accumulations of 4 to 7 inches are possible across the Cache Valley, Bear Lake region, and Caribou Highlands, with 4 to 8 inches in Swan Valley and the Teton Valley, and 6 to 12 inches across the Upper Snake Highlands and Island Park region.

The combination of falling and blowing and drifting snow will likely lead to difficult travel conditions across the region due to snow covered roads and reduced visibility.

Finally, a strong cold front is expected to cross the region from west to east Sunday afternoon and evening. This front may be accompanied by heavy snow squalls and strong winds producing a brief period of whiteout conditions and very dangerous travel.

Everyone across southeast Idaho is encouraged to stay tuned to the latest forecasts from the National Weather Service, and be prepared for winter weather and travel impacts this weekend. As forecast confidence increases, watches, warnings, and advisories may be issued.