During the afternoon of June 9th scattered convective showers developed over north Idaho. A weak and short lived funnel cloud formed near Rathdrum.
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The episode as NWS OTX wrote it up.
During the afternoon of June 9th scattered convective showers developed over north Idaho. A weak and short lived funnel cloud formed near Rathdrum. Radar indicated some minor convective showers in the area but no rotational signatures.
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 9, 1:19 PM PST, 1 hour 46 minutes earlier.
Area Forecast Discussion National Weather Service Spokane WA 219 PM PDT Sat Jun 9 2018 .SYNOPSIS... A recent cold front will continue much cooler, showery, breezy weather with isolated thunderstorms possible. The cool, breezy unsettled weather is expected to continue through the weekend. A drying and warming trend will arrive with the new work week, before some shower chances return later in the week. && .DISCUSSION... Tonight: Soggy conditions will continue around extreme eastern Washington and the Idaho this evening as a slow moving cold front pushes into Montana and the parent upper low settles over the Pacific northwest. A half to a third of an inch of rain from this system was recorded Pullman/Moscow and surrounding areas within 40 miles. Farther north about one or two tenths but still pretty wet. Colder air will continue to poor into the region from the west dropping snow levels around 4500 feet along the Cascades however with passing showers no accumulation would be expected. Showers will continue in the Panhandle overnight but afternoon and early evening instability will pop up some showers elsewhere in the Basin and northern mountains of Washington. The best instability looks to be along the Canadian border so a few lightning strikes will be possible until the sun sets. TC Sunday through Saturday: After some showery weather early this week the Inland NW dries out, before additional shower chances return for the second half of work week. Models continue to disagree over the details out that far. However the shower threat may not be enough to change plans. First Sunday to Monday an upper trough continues to shift through. The cool, unstable airmass will keep the shower and thunderstorm risk in the forecast. Sunday will see the best chances, especially in the afternoon and around the mountains. Monday the risk starts to shift to the north and eastern mountains. Expect breezy conditions peaking Sunday, especially over the unsheltered Columbia Basin, Spokane area and Palouse. Speeds around 15-20 mph with gusts between 25-35 mph will be possible. The sheltered mountains valleys will see comparatively lower speeds. Winds decrease somewhat Monday, but it still looks breezy. From Tuesday to Wednesday drier weather takes hold as a ridge builds in. The exception will be toward the Cascades Wednesday as a system pushes toward the coast and brings some shower threat again. Look for increased middle to high clouds throughout the region going into Wednesday too. Temperatures will be push back toward seasonal averages or slightly above. For Wednesday night through Saturday the next trough moves inland. This will renew shower chances. The best risk will be Thursday and around the mountains, but the valley and basin locations will at least see a slight risk. Model disagreement degrades confidence in coverage and timing as some shift the trough trough quickly, drying the area out by Saturday. Others hold the trough in place. It may not be enough to alter plans, but it should be monitored. Temperatures will dip again closer to or slightly below normal. /J. Cote' && .AVIATION... 18Z TAFS: A very moist air mass with a slow moving cold front will produce MVFR conditions and temporary, localized IFR conditions around and at KGEG, KSFF, KCOE, and KPUW TAFs. KEAT and KMWH will generally be dry and VFR. CIG and VSBY Conditions will be highly variable through 03Z as post-frontal convection showers are added during the period. Slow drying will occur overnight however stratus will likely be present despite increasing post-frontal winds. Rain showers will diminish after 03Z. Westerly winds after 14Z will be stronger and more persistent on Sunday. TC && .PRELIMINARY POINT TEMPS/POPS... Spokane 45 57 41 64 42 72 / 50 30 20 10 0 0 Coeur d'Alene 44 56 39 63 41 72 / 80 50 40 20 0 0 Pullman 42 56 40 61 41 71 / 60 30 30 10 0 0 Lewiston 47 63 46 68 45 79 / 50 30 20 20 0 0 Colville 46 59 39 67 40 74 / 60 50 30 20 10 0 Sandpoint 45 56 38 61 38 70 / 80 50 50 20 10 0 Kellogg 41 52 38 58 40 69 / 80 70 60 20 0 0 Moses Lake 48 66 42 72 44 78 / 10 30 10 0 0 0 Wenatchee 50 64 45 71 47 76 / 10 20 10 0 0 0 Omak 48 65 41 71 43 76 / 30 30 10 0 0 0 && .OTX WATCHES/WARNINGS/ADVISORIES... ID...None. WA...None. &&
Hazardous Weather Outlook National Weather Service Spokane WA 233 AM PDT Sat Jun 9 2018 IDZ001>004-026-027-WAZ031>038-041>044-100945- 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- 233 AM PDT Sat Jun 9 2018 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...TONIGHT No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY No hazardous weather is expected at this time.
The Spokane radar (KOTX), 56 km away, was scanning. The volume nearest the first event began at 23:03 UTC.
1 funnel cloud. Local standard time, as filed.
A member of the public photographed a weak funnel cloud near Rathdrum. The funnel cloud quickly dissipated.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2018Every state in 2018This day in weather historyWarnings in Idaho, June 2018
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: 762931.