A mid spring winter storm dumped 3 to 7 inches on the Upper snake River Highlands. On the morning of the 18th there were many power outages in the Driggs/Alta area with snow loading on power lines due to the wetness of the snow with tree branches on lines as well.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PIH wrote it up.
A mid spring winter storm dumped 3 to 7 inches on the Upper snake River Highlands. On the morning of the 18th there were many power outages in the Driggs/Alta area with snow loading on power lines due to the wetness of the snow with tree branches on lines as well.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pocatello, ID wrote its last area forecast discussion before the first event at May 16, 1:34 AM MST, 9 hours 26 minutes earlier.
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</html>2 winter weather. Local standard time, as filed.
A mid spring winter storm dumped 3 to 7 inches on the Upper snake River Highlands. On the morning of the 18th there were many power outages in the Driggs/Alta area with snow loading on power lines due to the wetness of the snow with tree branches on lines as well.
Three accidents occurred on interstate 86 due to black ice from unseasonably cold weather. The vehicles either crashed into guard rails or rolled over as a semi truck did.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2017Every state in 2017This day in weather historyWarnings in Idaho, May 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 704177, 704190.