Alert archive / Utah / Snow Squall Warnings in 2021
Snow Squall Warning 1, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this snow squall warning at Feb 26, 2021, 4:38 PM MST for Box Elder County, Utah. It was in force for 52 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
- Feb 26, 2021, 4:38 PM MST (23:38 UTC)
- Expired
- Feb 26, 2021, 5:30 PM MST
- In force
- 52 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
County Box Elder County, UT
The radar
The Salt Lake City radar (KMTX), 90 km from the middle of the area, began a volume at 23:39 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
Elko, NV (KLKN), launched 12:00Z, 11.6 hours before the alert went out and 128 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
- 1346 m above ground
- 0-6 km bulk shear
- 82 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 233 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
032
WWUS55 KSLC 262340
SQWSLC
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Salt Lake City UT
438 PM MST Fri Feb 26 2021
UTC003-270030-
/O.NEW.KSLC.SQ.W.0001.210226T2338Z-210227T0030Z/
Box Elder UT-
438 PM MST Fri Feb 26 2021
The National Weather Service in Salt Lake City has issued a
* Snow Squall Warning for...
Northwestern Box Elder County in northern Utah...
* Until 530 PM MST
* At 438 PM MST, a dangerous snow squall was located along a line
extending from near Grouse Creek to near Juniper Idaho on I-84,
moving east-southeast at 45 mph.
HAZARD...Poor visibility in heavy snow and blowing snow. Wind
gusts greater than 30 mph.
SOURCE...Radar and webcams.
IMPACT...Dangerous life-threatening travel.
* This includes the following highways...
Interstate 84 between mile markers 1 and 12.
Utah Route 30 between mile markers 1 and 90.
Locations impacted include...
Snowville, Park Valley, Etna, Standrod, Grouse Creek, Curlew
Junction, Lynn, Lucin, Rosette and Yost.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Reduce your speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.
&&
LAT...LON 4199 11251 4116 11404 4199 11403
TIME...MOT...LOC 2338Z 277DEG 37KT 4230 11277 4190 11356 4117 11486
$$
Church1 follow-up statement
640
WWUS55 KSLC 270013
SQWSLC
Snow Squall Warning
National Weather Service Salt Lake City UT
512 PM MST Fri Feb 26 2021
UTC003-270030-
/O.CON.KSLC.SQ.W.0001.000000T0000Z-210227T0030Z/
Box Elder UT-
512 PM MST Fri Feb 26 2021
...A SNOW SQUALL WARNING REMAINS IN EFFECT UNTIL 530 PM MST FOR
NORTHWESTERN BOX ELDER COUNTY...
At 512 PM MST, a dangerous snow squall was located along a line
extending from near Montello Nevada to Park Valley to the Idaho
Border on I-84, moving east-southeast at 45 mph.
HAZARD...Poor visibility in snow and blowing snow. Wind gusts
greater than 30 mph.
SOURCE...Radar and webcams.
IMPACT...Dangerous life-threatening travel.
This includes the following highways...
Interstate 84 between mile markers 1 and 12.
Utah Route 30 between mile markers 1 and 90.
Locations impacted include...
Snowville, Park Valley, Etna, Standrod, Grouse Creek, Curlew
Junction, Lucin, Rosette and Yost.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Reduce your speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.
&&
LAT...LON 4199 11251 4116 11404 4167 11403 4199 11352
TIME...MOT...LOC 0012Z 277DEG 37KT 4226 11233 4186 11312 4113 11442
$$
ChurchNearby
Snow Squall Warnings in Utah, 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.