Overnight severe thunderstorms brought rain showers and lightning through eastern Washington on June 15th. There were heavy downpours and isolated hail in portions of southeastern Washington.
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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 OTX wrote it up.
Overnight severe thunderstorms brought rain showers and lightning through eastern Washington on June 15th. There were heavy downpours and isolated hail in portions of southeastern Washington.
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 Spokane, WA wrote its last area forecast discussion before the first event at Jun 14, 8:54 PM PST, 3 hours 51 minutes earlier.
Area Forecast Discussion National Weather Service Spokane WA 954 PM PDT Mon Jun 14 2021 .SYNOPSIS... There will be an increasing chance for showers and thunderstorms through Tuesday, as system approaches and then moves through the region. A few storms could become strong, producing gusty winds, and brief heavy rain. By Wednesday, the Inland Northwest should see a significant drying and warming trend lasting to the end of the work week. The forecast by the weekend is somewhat uncertain with a small chance of showers or thunderstorms near the Canadian Border and perhaps a little cooling. && .DISCUSSION... Radar looks fairly similar to last night, with a north-south band of rain showers over central Washington. Some thunderstorms are embedded in this area of showers, mainly affecting Wenatchee, Omak and Moses Lake. So far these storms have been rather weak, just putting out a few lightning strikes and light rain. Nespelem is the big winner so far with 0.17" of rain. New 00Z NAM and CAMs models are in and there's not a lot of difference from their previous runs. HREF shows the best conglomeration of 40+ dBz echoes at 2am along a line from Republic and Colville southward to Walla Walla and Clarkston. By 5am that line has shifted into the Idaho Panhandle. These will be wet storms with rainfall amounts around a quarter to a half inch. This will minimize the wildfire threat from lightning. Storms will likely move too fast for any flooding threat. Hail and wind gusts are still a possibility but threat is typically lower overnight. RJ && .AVIATION... 06Z TAFS: Thunderstorms will impact much of the area tonight. The exception this will be the Cascades where the thunderstorms appear to be over for the night. Heavy rain will be the main impact from these storms, along with the potential for gusty winds. There should be enough rain-cooling over extreme eastern WA and the Panhandle that MVFR cigs are expected for Tuesday morning along with mountain obscuration. This won't last long as conditions will improve by late morning. Another round of showers and thunderstorms are possible Tuesday afternoon and early evening. RJ && .PRELIMINARY POINT TEMPS/POPS... Spokane 55 70 46 73 48 81 / 90 90 10 0 0 0 Coeur d'Alene 55 66 47 71 47 79 / 80 90 10 0 0 0 Pullman 54 65 43 70 45 78 / 90 80 20 0 0 0 Lewiston 59 73 52 80 53 86 / 70 70 20 0 0 0 Colville 58 73 42 76 44 83 / 90 80 10 0 0 0 Sandpoint 57 67 46 72 44 76 / 70 90 30 0 0 0 Kellogg 54 63 47 69 49 75 / 60 90 30 0 0 0 Moses Lake 57 76 47 80 50 87 / 80 10 0 0 0 0 Wenatchee 55 74 50 79 54 85 / 80 10 0 0 0 0 Omak 55 75 48 78 50 86 / 80 20 0 0 0 0 && .OTX WATCHES/WARNINGS/ADVISORIES... ID...None. WA...None. &&
Hazardous Weather Outlook National Weather Service Spokane WA 436 AM PDT Mon Jun 14 2021 IDZ001>004-026-027-WAZ031>038-041>044-151200- Northern Panhandle-Coeur d'Alene Area-Idaho Palouse- Central Panhandle Mountains-Lewiston Area- Lewis and Southern Nez Perce Counties-Northeast Blue Mountains- Lower Garfield and Asotin Counties-Washington Palouse- Moses Lake Area-Upper Columbia Basin-Spokane Area- Northeast Mountains-Okanogan Highlands-Wenatchee Area- East Slopes Northern Cascades-Okanogan Valley-Waterville Plateau- 436 AM PDT Mon Jun 14 2021 This Hazardous Weather Outlook is for portions of North Idaho... North Central Idaho...Central Washington...East Central Washington...North Central Washington...Northeast Washington and Southeast Washington. .DAY ONE...TODAY AND TONIGHT Scattered thunderstorms are expected over Eastern Washington and North Idaho Monday night. Some storms may become strong producing frequent lightning, gusty winds, brief heavy rain, and possible hail. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A chance of thunderstorms will to linger into Tuesday over most of Eastern Washington and North Idaho.
Special Weather Statement
National Weather Service Spokane WA
1243 AM PDT Tue Jun 15 2021
WAZ031>033-150815-
Northeast Blue Mountains WA-Washington Palouse WA-
Lower Garfield and Asotin Counties WA-
1243 AM PDT Tue Jun 15 2021
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN GARFIELD AND CENTRAL
WHITMAN COUNTIES UNTIL 115 AM PDT...
At 1242 AM PDT, Doppler radar was tracking a strong thunderstorm near
Pomeroy, moving north at 60 mph.
Nickel size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Pomeroy, Endicott, Dusty, Dodge, Diamond, Almota and Mayview.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4642 11772 4644 11772 4644 11774 4647 11774
4647 11785 4652 11786 4703 11775 4687 11719
4640 11764
TIME...MOT...LOC 0742Z 199DEG 52KT 4652 11772
GKOCHThe national radar mosaic for the moment the first event began.
2 hail. Local standard time, as filed.
Numerous reports of hail, from 1 to 1.25 inches, fell in Pomeroy as two strong thunderstorm cells moved across northern Garfield.
There were numerous reports of hail, from 1 to 1.5 inches, associated with two strong thunderstorm cells that moved across western Whitman County. The reports were from Endicott, Peyton, St. John, and La Crosse.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2021Every state in 2021This day in weather historyWarnings in Washington, June 2021
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: 969772, 969780.