A strong cold front working it's way through Eastern Oregon and Southwest Idaho produced isolated severe high winds across the area.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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 BOI wrote it up.
A strong cold front working it's way through Eastern Oregon and Southwest Idaho produced isolated severe high winds across the area.
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 Jun 13, 2:11 AM MST, 3 hours 4 minutes earlier.
Area Forecast Discussion National Weather Service Boise ID 311 AM MDT Sat Jun 13 2020 .SHORT TERM...Today through Monday night...Initial surface cold front moved through our CWA Friday night with gusty northwest winds, strongest in and near the Lower Treasure Valley. Showers and thunderstorms stayed well behind the front in Harney and Baker Counties and have been slow to shift east so far. That will change early this morning as a strong short wave trough comes in from northwest Nevada and develops moderate to heavy rain over nearly all of our CWA, the exceptions being south-central Idaho and Harney County. Instability will generate isolated thunderstorms this morning, but the air mass will stabilize later today due to low-level cooling. Isolated thunderstorms will continue, however, in the Owyhee Mountains and southern Malheur County. Later tonight after the short wave exits, the main upper low off Washington will come inland with more showers (except along the Nevada border) and isolated thunderstorms from Baker County/OR to the Upper Weiser Valley in Idaho. Light snow in northern mountains above 6000 feet. Showers will continue most of Sunday with isolated thunderstorms again in northern areas, clearing Sunday night. On Monday another north Pacific trough will come in with more showers in northern areas, with light snow again above 6000 feet in northern-most mountains. Much cooler today and Sunday, warming only slightly Monday. Winds will be generally light northwest today and Sunday, except near thunderstorms. .LONG TERM...Tuesday through Saturday...An upper level trough will swing across the Pacific Northwest on Tuesday, spreading showers and afternoon thunderstorms across higher terrain of the Blue and West Central Mountains. Wednesday will dry out across the region, with a slight chance of showers and thunderstorms skirting the northeast portion of Valley County. Models remain split over solutions for Thursday, but Friday and beyond is higher confidence. A weak trough will graze the region on Friday, but precipitation will be limited to higher elevations of central Idaho. Temperatures through Friday will remain below normal, then surpass normal on Saturday under upper level ridging. && .AVIATION...Mainly VFR, but deteriorating this morning. Scattered to numerous showers/thunderstorms over SE Oregon this morning, moving into southwest Idaho after 13/1000Z. Storm activity will bring local MVFR/IFR conditions, mountain obscurations, and gusty winds. A cold front with gusty winds over east Oregon will move through SW Idaho into the morning, producing showers/thunderstorms that will persist through the afternoon. Surface winds: variable or NW 5-15 kt, becoming W to NW 10-20 kt with gusts to 30-45 kt due to cold front early this morning. Winds will decrease by this afternoon. Winds aloft near 10kft MSL: W to SW 15-35 kt. Sunday Outlook...Isolated to scattered showers and thunderstorms expected. Areas of mountain obscuration. Pockets of MVFR/IFR conditions and gusty winds with showers. Improving conditions by Sunday late afternoon. && .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....AL AVIATION.....AL
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
The Grassy Mountain RAWS, around 15 miles southwest of Jordan Valley, recorded a wind gust of 61 MPH.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2020Every state in 2020This day in weather historyWarnings in Oregon, June 2020
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: 895460.