Wind gusts of 50 mph plus were widespread behind a cold frontal passage.
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The episode as NWS PIH wrote it up.
Wind gusts of 50 mph plus were widespread behind a cold frontal passage.
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 Jun 20, 1:35 PM MST, 25 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Pocatello ID 235 PM MDT Fri Jun 20 2025 .KEY MESSAGES... - Wind Advisory continues until late this evening for much of the forecast area. - Red Flag Warning continues until late this evening for the southern Sawtooth National Forecast and adjacent BLM lands. - Winter Weather Advisory for unusual late spring/early summer snowfall in Blaine, Custer, Clark, and Fremont Counties above 7500 feet elevation. && .SHORT TERM /THROUGH MONDAY/... Issued at 210 PM MDT Fri Jun 20 2025 Lots to talk about in this period. First, the very dry humidity and strong wind will combine with the critical fuels in the southern portions of the Sawtooth National Forecast (south of the Snake River) and any adjoining Twin Falls District BLM lands. This will likely NOT recur tomorrow as the relative humidity will struggle to get below 25 percent, never mind 15 percent. The wind tonight is strong enough for areas in the Snake River plain, southern hills, and the highlands south of the Snake River to see windspeeds exceeding 30 mph and gusts greater than 45 mph. This should diminish during the late evening. Wind will continue moderate in these locations for Sat, maybe a Lake Wind Advisory if they do not subside as much as currently predicted. Finally we get to the snow. A vigorous upper level trough that is producing the wind since last night will spread snow above 7500 feet elevation in the northern tier of the forecast area. While not much, mainly in the 1 to 8 inch range save for the Lost River Range, including Borah Peak, where snow accumulation may exceed 10 inches. For the Clark-Fremont County area, the snow starts a day later but finishes at around the same time as it does in the central Idaho mountains. Amounts are more modest there, 1 to 5 inches, but still the same snow level for accumulation. Obviously, after near-record heat only just this past Thu, this storm will bring temperatures down tremendously. Without the sun today, temperatures cooled down 10 to 15 deg F from Thu. Expect another 10 to 15 Deg F from today to Sat. The clouds and cold air continue the cooling trend into Sun, with another 2 to 7 deg F taken off the daily high. By Sun night, as skies clear, Frost and Freeze issues will rule the overnight hours, depending on how much of the cold air truly arrives, so stay tuned. && .LONG TERM /MONDAY NIGHT THROUGH THURSDAY/... Issued at 210 PM MDT Fri Jun 20 2025 All the weather appears to be "front loaded" in the near term periods, so expect less drastic weather. However, there is an upper level trough expected Tue-Wed to keep temperatures from warming too quickly. This could include some wind and thunderstorms. Sometime on Thu or late Thu night the upper level ridging we get so used to here in the Great Basin and northern Rockies will return warm temperatures, getting back above normal on Thu. && .AVIATION /18Z TAFS THROUGH 18Z SATURDAY/... Issued at 1156 AM MDT Fri Jun 20 2025 Mid and upper level clouds will increase today as an upper low shifts inland. Winds will be strong today, with gusts at all terminals ranging 25 to 35 kts. They will remain elevated through the overnight hours and strengthen again tomorrow afternoon. CAMs show organized precipitation reaching the central mountains around mid- afternoon with a dry period before wraparound moisture filters into central Idaho Saturday. && .FIRE WEATHER... Issued at 210 PM MDT Fri Jun 20 2025 A strong upper low is moving onshore today and continuing its track inland tomorrow, bringing strong winds to Southeast Idaho today and bringing cold temperatures areawide with rain and snow to our central and eastern mountains this weekend. This will mean elevated fire weather conditions across the region today during the period of strongest winds coinciding with low minimum relative humidity ranging the teens and single digits ahead of the incoming moisture. This is especially the case in areas further southeast, across Fire Weather Zones 427, 410, and 413. Widespread wind gusts will range 30 to 45 mph this afternoon and evening, with winds remaining very breezy into the overnight hours. A RED FLAG WARNING remains in effect through 10 PM tonight for FWZ 427 due to the combination of gusty winds and low RH values, with RH running less than 15 percent and wind gusts ranging 30 to 40 mph. As the upper low arrives on Saturday, temperatures will dramatically drop by 20 degrees, give or take, and by several more degrees on Sunday. Winds will also remain breezy each afternoon through the weekend but to a lesser degree than Friday. Precipitation will initially be mostly concentrated across the central mountains tonight through the first part of Saturday. Precipitation rates and amounts will dramatically increase late night Saturday into early Sunday, when the center of the low tracks directly over Idaho and wraparound moisture filters into the central mountains in northeast flow. Snow levels will drop just below 7,000' during this timeframe, resulting in 2 to 6 inches of accumulation above 7,000' with 6 to 12 along the highest peaks of the central mountains. This will also be the timeframe when areas further south also stand a chance of seeing some light rain showers. && .PIH WATCHES/WARNINGS/ADVISORIES... Wind Advisory until 9 PM MDT this evening for IDZ051>062- 067>070-074. Red Flag Warning until 10 PM MDT this evening for IDZ427. Winter Weather Advisory from midnight Saturday night to 6 PM MDT Sunday for IDZ066-067. Winter Weather Advisory from midnight tonight to 6 PM MDT Sunday for IDZ069>074. && SHORT TERM...Messick LONG TERM...Messick AVIATION...Cropp FIRE WEATHER...Cropp
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
Widespread 50 to 70 mph wind gusts occurred in the Raft River Region with a peak gust of 71 mph at Moburg Canyon.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2025Every state in 2025This day in weather historyWarnings in Idaho, June 2025
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: 1275289.