During the afternoon of June 27th a complex of slow moving thunderstorms developed over the western Columbia Basin and the eastern slopes of the Cascades in a moist and unstable air mass near the center of an upper level low pressure. 97 inch of rain from one of these storms.
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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.
During the afternoon of June 27th a complex of slow moving thunderstorms developed over the western Columbia Basin and the eastern slopes of the Cascades in a moist and unstable air mass near the center of an upper level low pressure. Several reports of flash flooding were received from the Wenatchee area where the COOP observer at the Wenatchee Water Plant reported 0.97 inch of rain from one of these storms.
A brief funnel cloud was photographed appending from another storm over the Waterville Plateau.
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 26, 9:35 AM PST, 1 hour 55 minutes earlier.
Area Forecast Discussion National Weather Service Spokane WA 1035 AM PDT Wed Jun 26 2019 .SYNOPSIS... Today will be an active day with showers and thunderstorm region wide. Thunderstorms will be capable of producing frequent lightning, gusty winds, heavy rain, and hail. Scattered showers and thunderstorms are expected to linger Thursday into Friday before a warming and drying trend arrives over the weekend except for lingering mountain showers. && .DISCUSSION... Made slight changes to the forecast. Temperatures are on the rise, several degrees over yesterday. Mid level moisture tracked across extreme eastern WA and north Idaho this morning with a band of light showers. Surface based convection will be firing up by midday over the mountains and will be focusing on activity in northeast Oregon which is expected to track into southeast WA and the southern Panhandle this afternoon and evening. The threat of thunderstorms will span the entire region with threat for strong to severe thunderstorms across southeast WA into the Idaho Panhandle. /rfox. && .AVIATION... 18Z TAFS: It still looks like an active afternoon and evening for thunderstorms. Every TAF site will be effected. Surface based convection should kick off over the mountains, but the better chances will arrive with the disturbance which will initiate strong thunder over NE Oregon and shift it N through the end of the forecast period. The thunder should hit LWS and PUW first around 00z or so and then take a couple more hours to spread across the remaining TAFS. Strong wind gusts are the greatest threat. It's conceivable winds in excess of 50 mph are possible for LWS and PUW with a lesser chance for the GEG-SFF-COE corridor as well as MWH. The storms would also produce heavy rains and maybe some small hail. The boundary layer moistens considerably from these thunderstorms and could anticipate MVFR conditions developing overnight at KGEG/KSFF/KCOE/KPUW. Will see improving conditions to VFR by Thursday morning will south to southwest winds. /rfox. && .PRELIMINARY POINT TEMPS/POPS... Spokane 79 52 70 47 70 47 / 20 70 50 30 20 20 Coeur d'Alene 80 52 70 47 69 47 / 20 60 60 40 20 20 Pullman 76 48 67 44 67 45 / 40 70 40 50 10 20 Lewiston 82 57 74 52 73 53 / 50 60 60 50 30 20 Colville 83 44 75 39 74 38 / 20 70 60 40 50 40 Sandpoint 78 51 67 46 67 46 / 20 60 60 50 40 30 Kellogg 77 54 68 49 67 49 / 20 70 50 60 20 30 Moses Lake 81 52 75 48 75 49 / 30 60 30 10 10 10 Wenatchee 78 56 72 52 72 52 / 40 60 50 30 40 10 Omak 79 54 71 49 71 48 / 20 80 70 40 60 30 && .OTX WATCHES/WARNINGS/ADVISORIES... ID...None. WA...None. &&
Hazardous Weather Outlook National Weather Service Spokane WA 522 AM PDT Wed Jun 26 2019 IDZ003-004-026-027-WAZ031>033-271230- Idaho Palouse-Central Panhandle Mountains-Lewiston Area- Lewis and Southern Nez Perce Counties-Northeast Blue Mountains- Lower Garfield and Asotin Counties-Washington Palouse- 522 AM PDT Wed Jun 26 2019 This Hazardous Weather Outlook is for portions of North Idaho... North Central Idaho and Southeast Washington. .DAY ONE...TODAY AND TONIGHT Scattered strong thunderstorms are expected this afternoon and evening. A few storms may become severe and be capable of producing large hail, damaging winds, frequent lightning, and torrential rain. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY No hazardous weather is expected at this time. IDZ001-002-WAZ034>038-041>044-271230- Northern Panhandle-Coeur d'Alene Area-Moses Lake Area- Upper Columbia Basin-Spokane Area-Northeast Mountains- Okanogan Highlands-Wenatchee Area-East Slopes Northern Cascades- Okanogan Valley-Waterville Plateau- 522 AM PDT Wed Jun 26 2019 This Hazardous Weather Outlook is for portions of North Idaho... Central Washington...East Central Washington...North Central Washington and Northeast Washington. .DAY ONE...TODAY AND TONIGHT Scattered thunderstorms are expected to develop this afternoon in the Cascades before spreading over the remainder of Central and Northeast Washington into the Idaho Panhandle late afternoon and evening. Some strong storms are possible and will be capable of producing wind gusts in excess of 40 MPH, frequent lightning, hail, and torrential rain. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY No hazardous weather is expected at this time.
The national radar mosaic for the moment the first event began.
3 flash flood, 1 funnel cloud. Local standard time, as filed.
KING news reported on a funnel cloud photographed by a member of the public near Waterville. The photo showed a clearly defined funnel appending from the base of a nearby thunderstorm.
A spotter reported manhole covers being blown off of storm drain access holes from surging water in downtown Wenatchee.
Number 2 Canyon Road was cut by mud and debris carried by a Flash Flood . The road was closed for a few hours while road crews removed the debris.
Several photographs were printed in the Wenatchee World Newspaper showing street flooding and storm drain overflow in the city of Wenatchee from a thunderstorm with heavy rain.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2019Every state in 2019This day in weather historyWarnings in Washington, June 2019
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: 833853, 833847, 833849, 833848.