Alert archive / Utah / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 33, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 24, 2021, 4:30 PM MDT for Washington County, Utah. It was in force for 30 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
- Jul 24, 2021, 4:30 PM MDT (22:30 UTC)
- Expired
- Jul 24, 2021, 5:00 PM MDT
- In force
- 30 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
County Washington County, UT
The radar
The Cedar City radar (KICX), 111 km from the middle of the area, began a volume at 22:33 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
Las Vegas, NV (KVEF), launched 12:00Z, 10.5 hours before the alert went out and 163 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
- 335 J/kg
- Mixed-layer CIN
- -191 J/kg
- Mixed-layer LCL
- 2063 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
325
WUUS55 KSLC 242230
SVRSLC
UTC053-242300-
/O.NEW.KSLC.SV.W.0033.210724T2230Z-210724T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Salt Lake City UT
430 PM MDT Sat Jul 24 2021
The National Weather Service in Salt Lake City has issued a
* Severe Thunderstorm Warning for...
West central Washington County in southwestern Utah...
* Until 500 PM MDT
* At 430 PM MDT, a severe thunderstorm was located 11 miles southwest
of Gunlock State Park, or 17 miles northwest of Virgin River Gorge,
moving southwest at 20 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* This severe thunderstorm will remain over mainly rural areas of
west central Washington County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3726 11394 3713 11386 3700 11404 3701 11405
3722 11406
TIME...MOT...LOC 2230Z 060DEG 18KT 3716 11396
HAIL...1.50IN
WIND...60MPH
$$
Webber2 follow-up statements
071
WWUS55 KSLC 242246
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
446 PM MDT Sat Jul 24 2021
UTC053-242300-
/O.CON.KSLC.SV.W.0033.000000T0000Z-210724T2300Z/
Washington UT-
446 PM MDT Sat Jul 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM MDT
FOR WESTERN WASHINGTON COUNTY...
At 446 PM MDT, a severe thunderstorm was located 16 miles northwest
of Beaver Dam, moving southwest at 20 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
This severe thunderstorm will remain over mainly rural areas of
western Washington County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3725 11396 3711 11389 3700 11404 3701 11405
3722 11406
TIME...MOT...LOC 2246Z 060DEG 18KT 3712 11405
HAIL...1.50IN
WIND...60MPH
$$
Webber280
WWUS55 KSLC 242306
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
506 PM MDT Sat Jul 24 2021
UTC053-242316-
/O.EXP.KSLC.SV.W.0033.000000T0000Z-210724T2300Z/
Washington UT-
506 PM MDT Sat Jul 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN WASHINGTON COUNTY HAS
EXPIRED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.
LAT...LON 3725 11396 3711 11389 3700 11404 3701 11405
3722 11406
TIME...MOT...LOC 2306Z 060DEG 18KT 3708 11414
$$
WebberThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 6:14 PM MDT | Areal Flood Advisory | SLC | Washington | 61 min |
| Jul 24, 3:23 AM MDT | Flash Flood Watch | SLC | Beaver, Garfield, Iron, Kane, Piute, Washington and 1 more | 42 hr |
| Jul 24, 12:56 PM MDT | Flash Flood Warning | SLC | Kane | 3 hr |
| Jul 24, 12:58 PM MDT | Special Weather Statement | SLC | Kane | 32 min |
| Jul 24, 1:34 PM MDT | Flash Flood Warning | SLC | Garfield, Kane | 4 hr |
| Jul 24, 2:13 PM MDT | Flash Flood Warning | SLC | Washington | 3 hr |
| Jul 24, 2:24 PM MDT | Severe Thunderstorm Warning | SLC | Washington | 21 min |
| Jul 24, 3:16 PM MDT | Severe Thunderstorm Warning | SLC | Washington | 29 min |
| Jul 24, 3:40 PM MDT | Severe Thunderstorm Warning | SLC | Iron, Washington | 35 min |
| Jul 24, 4:04 PM MDT | Severe Thunderstorm Warning | SLC | Washington | 26 min |
| Jul 24, 4:07 PM MDT | Flash Flood Warning | SLC | Kane, Washington | 3 hr |
| Jul 24, 4:12 PM MDT | Flash Flood Warning | SLC | Iron, Washington | 3 hr |
| Jul 24, 5:24 PM MDT | Flash Flood Warning | SLC | Washington | 3 hr |
Nearby
Severe Thunderstorm Warnings in Utah, 2021Every severe thunderstorm 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.