Alert archive / Utah / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 21, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 22, 2021, 2:13 PM MDT for Beaver County, Utah. It was in force for 32 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 22, 2021, 2:13 PM MDT (20:13 UTC)
- Expired
- Jul 22, 2021, 2:45 PM MDT
- In force
- 32 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Beaver County, UT
The radar
The Cedar City radar (KICX), 90 km from the middle of the area, began a volume at 20:12 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 12:00Z, 8.2 hours before the alert went out and 284 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
- 56 J/kg
- Mixed-layer CIN
- -151 J/kg
- Mixed-layer LCL
- 2355 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
574
WUUS55 KSLC 222013
SVRSLC
UTC001-222045-
/O.NEW.KSLC.SV.W.0021.210722T2013Z-210722T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Salt Lake City UT
213 PM MDT Thu Jul 22 2021
The National Weather Service in Salt Lake City has issued a
* Severe Thunderstorm Warning for...
Central Beaver County in southern Utah...
* Until 245 PM MDT
* At 213 PM MDT, a severe thunderstorm was located near Milford,
moving east at 10 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Milford.
This includes Utah Route 21 between mile markers 67 and 84.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3829 11312 3846 11320 3857 11294 3832 11283
TIME...MOT...LOC 2013Z 251DEG 7KT 3840 11308
HAIL...1.25IN
WIND...60MPH
$$
ND2 follow-up statements
589
WWUS55 KSLC 222024
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
224 PM MDT Thu Jul 22 2021
UTC001-222045-
/O.CON.KSLC.SV.W.0021.000000T0000Z-210722T2045Z/
Beaver UT-
224 PM MDT Thu Jul 22 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM MDT
FOR CENTRAL BEAVER COUNTY...
At 224 PM MDT, a severe thunderstorm was located over Milford, moving
east at 10 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Milford.
This includes Utah Route 21 between mile markers 67 and 84.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3829 11312 3846 11320 3857 11294 3832 11283
TIME...MOT...LOC 2024Z 251DEG 7KT 3841 11305
HAIL...1.25IN
WIND...60MPH
$$
ND942
WWUS55 KSLC 222042
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
242 PM MDT Thu Jul 22 2021
UTC001-222051-
/O.EXP.KSLC.SV.W.0021.000000T0000Z-210722T2045Z/
Beaver UT-
242 PM MDT Thu Jul 22 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BEAVER COUNTY WILL
EXPIRE AT 245 PM MDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 3829 11312 3846 11320 3857 11294 3832 11283
TIME...MOT...LOC 2041Z 251DEG 7KT 3842 11302
$$
NDThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 8:41 PM MDT | Flash Flood Warning | SLC | Kane | 6 hr |
| Jul 22, 2:43 AM MDT | Flash Flood Watch | SLC | Emery, Garfield, Kane, Sevier, Washington, Wayne | 20 hr |
| Jul 22, 11:16 AM MDT | Special Weather Statement | SLC | Piute | 29 min |
| Jul 22, 11:41 AM MDT | Special Weather Statement | SLC | 49 min | |
| Jul 22, 11:54 AM MDT | Flood Watch | SLC | Beaver, Garfield, Iron, Kane, Piute, Washington and 1 more | 11 hr |
| Jul 22, 1:02 PM MDT | Special Weather Statement | SLC | Iron | 43 min |
| Jul 22, 1:13 PM MDT | Special Weather Statement | SLC | Garfield | 32 min |
| Jul 22, 1:18 PM MDT | Areal Flood Advisory | SLC | Iron | 117 min |
| Jul 22, 1:20 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | 25 min |
| Jul 22, 1:45 PM MDT | Special Weather Statement | SLC | Kane | 45 min |
| Jul 22, 2:00 PM MDT | Special Weather Statement | SLC | Beaver | 30 min |
| Jul 22, 2:13 PM MDT | Flash Flood Warning | SLC | Garfield, Kane | 3 hr |
| Jul 22, 2:34 PM MDT | Flash Flood Warning | SLC | Kane, Washington | 3 hr |
| Jul 22, 2:42 PM MDT | Areal Flood Advisory | SLC | Beaver | 2 hr |
| Jul 22, 2:58 PM MDT | Severe Thunderstorm Warning | SLC | Washington | 32 min |
| Jul 22, 3:08 PM MDT | Flash Flood Warning | SLC | Garfield, Wayne | 3 hr |
| Jul 22, 3:14 PM MDT | Flash Flood Warning | SLC | Garfield, Kane | 5 hr |
| Jul 22, 3:14 PM MDT | Special Weather Statement | SLC | Washington | 46 min |
| Jul 22, 3:30 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | |
| Jul 22, 3:46 PM MDT | Flash Flood Warning | SLC | Garfield, Kane | 7 hr |
| Jul 22, 4:02 PM MDT | Severe Thunderstorm Warning | SLC | Iron | 28 min |
| Jul 22, 4:15 PM MDT | Special Weather Statement | SLC | Box Elder | 30 min |
| Jul 22, 4:28 PM MDT | Severe Thunderstorm Warning | SLC | Iron | 32 min |
| Jul 22, 4:48 PM MDT | Special Weather Statement | SLC | Washington | 27 min |
| Jul 22, 5:51 PM MDT | Special Weather Statement | SLC | 39 min | |
| Jul 22, 5:58 PM MDT | Flash Flood Warning | SLC | Utah | 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.