A thunderstorm outflow wind knocked down several large trees and power lines outside of McCall. The McCall airport recorded a gust of 45 mph.
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The episode as NWS BOI wrote it up.
A thunderstorm outflow wind knocked down several large trees and power lines outside of McCall. The McCall airport recorded a gust of 45 mph.
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 Boise, ID wrote its last area forecast discussion before the first event at Aug 19, 1:32 PM MST, 3 hours 18 minutes earlier.
Area Forecast Discussion National Weather Service Boise ID 232 PM MDT Fri Aug 19 2022 .SHORT TERM...Tonight through Sunday night...At 2 PM MDT scattered showers and isolated thunderstorms have developed in Owyhee and Twin Falls Counties, with a few light showers in the mountains north of the Snake Basin and Baker County/OR. These are the favored areas through this evening; other areas should be partly cloudy but stay dry. Skies will clear in Oregon overnight but stay partly to mostly cloudy in central and south-central Idaho. Clouds will keep nighttime temperatures warm. Greater convective development is expected Saturday afternoon in the Boise Mountains, west central Idaho Mountains, Camas Prairie, and near the ID/NV border, as a weak Pacific upper trough moves through those areas. Behind the trough eastern Oregon will be sunny and warm. The clearer skies in Oregon will advance eastward into Idaho Saturday night, and Sunday should be mostly sunny everywhere under a short wave upper ridge, except in eastern-most Idaho mountains where a slight chance of afternoon thunderstorms is again forecast. Skies will become clear in Idaho Sunday night, but the next weak Pacific trough will bring clouds and a slight chance of showers to eastern Oregon Sunday night. High temperatures Saturday will be 1-3 degrees warmer than today, and another 5 to 7 degrees Sunday. Boise may break its record for the number of 100+ days for the season. However, smoke may hinder full heating and latest HRRR smoke model does have Sunday slightly smokier than Saturday. .LONG TERM...Monday through Friday...Upper level trough passage to the north will suppress the ridge over the region beginning Monday. This will lower temperatures about 5 degrees on Tuesday. Upper level flow will remain somewhat zonal through the remainder of the period. Moisture will remain rather limited though it's possible moisture will reach the Nevada/Idaho border by Friday. Temperatures will be several degrees above normal area-wide. && .AVIATION...Isolated thunderstorms will continue to develop into the evening from the Idaho/Nevada border through the Boise and West Central Mountains of Idaho. Smoke layers reducing visibilities, especially south of KMYL. High density altitude due to hot temperatures. Surface winds: generally variable 10 kt or less. Gusty outflow winds up to 40kt in vicinity of showers and storms. Winds aloft at 10k feet MSL: E-SE 5-15kt. Weekend Outlook...Partly cloudy with a chance of thunderstorms over the higher terrain each afternoon through the weekend. Thunderstorms will be capable of producing gusty outflow winds. High density altitude conditions will continue. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...None. OR...None. && www.weather.gov/Boise www.facebook.com/NWSBoise www.twitter.com/NWSBoise SHORT TERM...LC LONG TERM....JDS AVIATION.....JDS
The Boise radar (KCBX), 159 km away, was scanning. The volume nearest the first event began at 23:51 UTC.
1 thunderstorm wind. Local standard time, as filed.
There were several social media reports of outflow winds that knocked down several large trees and power lines. The McCall airport recorded a peak wind gust of 45 mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2022Every state in 2022This day in weather historyWarnings in Idaho, August 2022
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: 1050516.