Alert archive / Idaho / Snow Squall Warnings in 2021
Snow Squall Warning 2, NWS Spokane, WA
NWS Spokane, WA issued this snow squall warning at Dec 26, 2021, 3:09 PM PST for Whitman County, Washington; Benewah County, Latah County, Idaho. It was in force for 51 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, 3:09 PM PST (23:09 UTC)
- Expired
- Dec 26, 2021, 4:00 PM PST
- In force
- 51 min
- Issued by
- NWS Spokane, WA
- Area
- Storm-based polygon
Counties Benewah County, ID, Latah County, ID, Whitman County, WA
The radar
The Spokane radar (KOTX), 89 km from the middle of the area, began a volume at 23:11 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, 11.2 hours before the alert went out and 97 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.
703
WWUS56 KOTX 262309
SQWOTX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Spokane WA
309 PM PST Sun Dec 26 2021
IDC009-057-WAC075-270000-
/O.NEW.KOTX.SQ.W.0002.211226T2309Z-211227T0000Z/
Latah ID-Benewah ID-Whitman WA-
309 PM PST Sun Dec 26 2021
The National Weather Service in Spokane has issued a
* Snow Squall Warning for...
Northwestern Latah County in the Panhandle of Idaho...
Southwestern Benewah County in the Panhandle of Idaho...
East central Whitman County in eastern Washington...
* Until 400 PM PST.
* At 308 PM PST, a dangerous snow squall was located 14 miles north
of Pomeroy, or 23 miles west of Pullman, moving northeast at 35
mph.
HAZARD...Extremely poor visibility in heavy snow.
SOURCE...Radar indicated.
IMPACT...Dangerous life-threatening travel.
US 95 from Plummer to Moscow and SR 195 from south of Colfax to
Rosalia.
Locations impacted include...
Colfax, Plummer, Potlatch, Palouse, Tekoa, Garfield, Albion, Onaway,
Farmington, Tensed, Princeton, Steptoe, Belmont, Sanders and Viola.
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 4678 11734 4695 11751 4734 11686 4717 11657
4676 11697
TIME...MOT...LOC 2308Z 230DEG 29KT 4669 11766
$$
VTThe office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 25, 8:47 PM PST | Wind Chill Advisory | OTX | Adams, Douglas, Ferry, Grant, Lincoln, Okanogan | 42 hr |
| Dec 26, 2:28 PM PST | Snow Squall Warning | OTX | Spokane | 47 min |
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.