Alert archive / Utah / Snow Squall Warnings in 2021
Snow Squall Warning 2, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this snow squall warning at Feb 26, 2021, 5:30 PM MST for Box Elder County, Utah. It was in force for 45 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, 5:30 PM MST (00:30 UTC)
- Expired
- Feb 26, 2021, 6:15 PM MST
- In force
- 45 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), 69 km from the middle of the area, began a volume at 00:32 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
Salt Lake City I, UT (KSLC), launched 00:00Z, 0.5 hours before the alert went out and 136 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
- 2183 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
854
WWUS55 KSLC 270030
SQWSLC
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Salt Lake City UT
530 PM MST Fri Feb 26 2021
UTC003-270115-
/O.NEW.KSLC.SQ.W.0002.210227T0030Z-210227T0115Z/
Box Elder UT-
530 PM MST Fri Feb 26 2021
The National Weather Service in Salt Lake City has issued a
* Snow Squall Warning for...
Northeastern Box Elder County in northern Utah...
* Until 615 PM MST
* At 530 PM MST, a dangerous snow squall was located near Snowville,
moving southeast at 35 mph.
HAZARD...Poor visibility in snow and blowing snow. Wind gusts
greater than 30 mph.
SOURCE...Radar indicated.
IMPACT...Dangerous life-threatening travel.
* This includes the following highways...
Interstate 84 between mile markers 0 and 32.
Utah Route 30 between mile markers 66 and 90.
Locations impacted include...
Snowville, Howell, Curlew Junction, Locomotive Springs, Promontory
and Golden Spike Historic Site.
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 4200 11226 4177 11230 4159 11256 4172 11307
4199 11321 4200 11295
TIME...MOT...LOC 0030Z 314DEG 28KT 4191 11270
$$
Church2 follow-up statements
088
WWUS55 KSLC 270053
SQWSLC
Snow Squall Warning
National Weather Service Salt Lake City UT
551 PM MST Fri Feb 26 2021
UTC003-270115-
/O.CON.KSLC.SQ.W.0002.000000T0000Z-210227T0115Z/
Box Elder UT-
551 PM MST Fri Feb 26 2021
...A SNOW SQUALL WARNING REMAINS IN EFFECT UNTIL 615 PM MST FOR
NORTHEASTERN BOX ELDER COUNTY...
At 551 PM MST, a dangerous snow squall was located near Howell, or 15
miles southeast of Snowville, moving southeast at 30 mph.
HAZARD...Poor visibility in heavy snow and blowing snow. Wind gusts
greater than 30 mph.
SOURCE...Radar and webcams.
IMPACT...Dangerous life-threatening travel.
This includes the following highways...
Interstate 84 between mile markers 1 and 32.
Utah Route 30 between I-84 and Curlew Junction.
Locations impacted include...
Snowville, Howell, Locomotive Springs, Promontory and Golden Spike
Historic Site.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Reduce your speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.
&&
LAT...LON 4200 11226 4177 11230 4159 11256 4172 11307
4199 11287 4199 11286
TIME...MOT...LOC 0051Z 314DEG 28KT 4179 11254
$$
Struthwolf305
WWUS55 KSLC 270114
SQWSLC
Snow Squall Warning
National Weather Service Salt Lake City UT
611 PM MST Fri Feb 26 2021
UTC003-270121-
/O.EXP.KSLC.SQ.W.0002.000000T0000Z-210227T0115Z/
Box Elder UT-
611 PM MST Fri Feb 26 2021
...THE SNOW SQUALL WARNING FOR NORTHEASTERN BOX ELDER COUNTY WILL
EXPIRE AT 615 PM MST...
The snow squall which prompted the warning has weakened. Therefore,
the snow squall warning will be allowed to expire. However, snow
showers are still occurring and roads could remain snow covered for
the next hour or two.
LAT...LON 4200 11226 4177 11230 4159 11256 4172 11307
4199 11287 4199 11286
TIME...MOT...LOC 0111Z 314DEG 28KT 4171 11243
$$
StruthwolfThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 26, 7:01 PM MST | Special Weather Statement | SLC | Davis | 89 min |
Nearby
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.