Strong northeast winds behind a cold front brought actual and wind chill temperatures to the -20 to -35 range overnight on the 4th and into the morning on the 5th. Most schools in southeast Idaho were closed on the 5th due to the extreme cold conditions.
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.
Strong northeast winds behind a cold front brought actual and wind chill temperatures to the -20 to -35 range overnight on the 4th and into the morning on the 5th. Most schools in southeast Idaho were closed on the 5th due to the extreme cold conditions.
7 extreme cold/wind chill. Local standard time, as filed.
Wind chill readings of -25 to -35 degrees were common with most schools closed on the 5th.
Extreme cold wind chills of -30 to -40 degrees caused many schools including Mackay School District and Butte County Schools to close.
Wind chill readings of -20 to -30 degrees closed all schools in the Eastern Magic Valley on the 5th.
Extreme cold wind chills of -20 to -35 degrees caused all schools in the Upper Snake River Plain to close on the 5th.
Extreme cold temperatures and wind chills in the -20 to -35 degree range caused all schools in the Lower Snake River Plain to close on the 5th.
Extreme cold wind chills of -20 to -30 degrees caused the closing of many school districts including North Gem District 149 and Soda Springs District.
Cold wind chill values of -20 to -30 degrees caused all Cassia County schools to close on the 5th.
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, January 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 2026-09-30. Each event’s entry at NCEI: 672831, 672840, 672832, 672836, 672837, 672839, 672838.