Alert archive / Idaho / Snow Squall Warnings in 2021
Snow Squall Warning 1, NWS Spokane, WA
NWS Spokane, WA issued this snow squall warning at Dec 26, 2021, 2:28 PM PST for Benewah County, Kootenai County, Idaho; Spokane County, Washington. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Dec 26, 2021, 2:28 PM PST (22:28 UTC)
- Expired
- Dec 26, 2021, 3:15 PM PST
- In force
- 47 min
- Issued by
- NWS Spokane, WA
- Area
- Storm-based polygon
Counties Benewah County, ID, Kootenai County, ID, Spokane County, WA
The radar
The Spokane radar (KOTX), 59 km from the middle of the area, began a volume at 22:30 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 10.5 hours before the alert went out and 33 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 855 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
844 WWUS56 KOTX 262228 SQWOTX BULLETIN - IMMEDIATE BROADCAST REQUESTED Snow Squall Warning National Weather Service Spokane WA 228 PM PST Sun Dec 26 2021 IDC009-055-WAC063-262315- /O.NEW.KOTX.SQ.W.0001.211226T2228Z-211226T2315Z/ Benewah ID-Kootenai ID-Spokane WA- 228 PM PST Sun Dec 26 2021 The National Weather Service in Spokane has issued a * Snow Squall Warning for... Northwestern Benewah County in the Panhandle of Idaho... Kootenai County in the Panhandle of Idaho... East central Spokane County in northeastern Washington... * Until 315 PM PST. * At 226 PM PST, a dangerous snow squall was located along a line extending from near Spirit Lake to 12 miles south of Plummer, moving northeast at 25 mph. HAZARD...Extremely poor visibility in heavy snow. SOURCE...Radar and webcams. IMPACT...Hazardous travel. Highways affected included I-90 from the Spokane Valley to Coeur d'Alene and US 95 from Coeur d'Alene to Plummer. Locations impacted include... Spokane, Spokane Valley, Coeur D'alene, Post Falls, Hayden, Rathdrum, Dalton Gardens, Liberty Lake, Millwood, Plummer, Hauser, Hayden Lake, Harrison, Otis Orchards-East Farms, Parkline, Otis Orchards, Green Acres, Trentwood, Dishman and Fourth Of July Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... Reduce your speed and turn on headlights! During snow squalls, the visibility may suddenly drop to near zero in whiteout conditions. Wet roadways will quickly freeze. Black ice will cause roads, bridges and overpasses to become slick and dangerous. Slow down and be prepared for sudden loss of traction. && LAT...LON 4796 11683 4768 11635 4718 11677 4767 11740 TIME...MOT...LOC 2226Z 226DEG 20KT 4805 11688 4715 11688 $$ VT
The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 26, 3:09 PM PST | Snow Squall Warning | OTX | Benewah, Latah | 51 min |
| Dec 25, 8:47 PM PST | Wind Chill Advisory | OTX | Adams, Douglas, Ferry, Grant, Lincoln, Okanogan | 42 hr |
Nearby
Snow Squall Warnings in Idaho, 2021Snow Squall Warnings in Washington, 2021Every snow squall warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.