Alert archive / Utah / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 61, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Aug 2, 2021, 3:24 PM MDT for Garfield County, Utah. It was in force for 66 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
- Aug 2, 2021, 3:24 PM MDT (21:24 UTC)
- Expired
- Aug 2, 2021, 4:30 PM MDT
- In force
- 66 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
County Garfield County, UT
The radar
The Cedar City radar (KICX), 167 km from the middle of the area, began a volume at 21:26 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
Grand Junction, CO (KGJT), launched 12:00Z, 9.4 hours before the alert went out and 255 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
- 22 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 1085 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
440
WUUS55 KSLC 022124
SVRSLC
UTC017-022230-
/O.NEW.KSLC.SV.W.0061.210802T2124Z-210802T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Salt Lake City UT
324 PM MDT Mon Aug 2 2021
The National Weather Service in Salt Lake City has issued a
* Severe Thunderstorm Warning for...
North central Garfield County in southern Utah...
* Until 430 PM MDT
* At 323 PM MDT, a severe thunderstorm was located 19 miles east of
Boulder, or 19 miles south of Fruita, moving southeast at 15 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 impact the Waterpocket Fold district
of Capitol Reef National Park including Notom Road and the Burr
Trail.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
&&
LAT...LON 3796 11114 3804 11116 3811 11094 3788 11069
3781 11108
TIME...MOT...LOC 2123Z 304DEG 14KT 3801 11109
HAIL...1.50IN
WIND...60MPH
$$
MPS2 follow-up statements
468
WWUS55 KSLC 022147
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
347 PM MDT Mon Aug 2 2021
UTC017-022230-
/O.CON.KSLC.SV.W.0061.000000T0000Z-210802T2230Z/
Garfield UT-
347 PM MDT Mon Aug 2 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM MDT
FOR CENTRAL GARFIELD COUNTY...
At 346 PM MDT, a severe thunderstorm was located 23 miles east of
Boulder, or 24 miles southeast of Capitol Reef National Park, moving
southeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe thunderstorm will impact the Waterpocket Fold district
of Capitol Reef National Park including Notom Road and the Burr
Trail.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 3802 11095 3788 11069 3781 11108 3795 11114
3800 11104
TIME...MOT...LOC 2146Z 304DEG 14KT 3796 11099
HAIL...1.00IN
WIND...60MPH
$$
MPS527
WWUS55 KSLC 022220
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
420 PM MDT Mon Aug 2 2021
UTC017-022230-
/O.EXP.KSLC.SV.W.0061.000000T0000Z-210802T2230Z/
Garfield UT-
420 PM MDT Mon Aug 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL GARFIELD COUNTY WILL
EXPIRE AT 430 PM MDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
LAT...LON 3802 11095 3788 11069 3781 11108 3795 11114
3800 11104
TIME...MOT...LOC 2220Z 304DEG 14KT 3789 11086
$$
MPSThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 6:01 PM MDT | Flash Flood Warning | SLC | Emery, Garfield, Wayne | 3 hr |
| Aug 1, 6:09 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Tooele | 51 min |
| Aug 1, 6:17 PM MDT | Special Weather Statement | SLC | Box Elder | 43 min |
| Aug 1, 6:27 PM MDT | Areal Flood Advisory | SLC | Tooele | 3 hr |
| Aug 1, 6:36 PM MDT | Special Weather Statement | SLC | Salt Lake | 39 min |
| Aug 1, 6:47 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Salt Lake, Tooele | 43 min |
| Aug 1, 7:00 PM MDT | Areal Flood Advisory | SLC | Salt Lake | 3 hr |
| Aug 1, 7:07 PM MDT | Areal Flood Advisory | SLC | Garfield, Iron | 113 min |
| Aug 1, 7:25 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Salt Lake | 35 min |
| Aug 1, 7:41 PM MDT | Areal Flood Advisory | SLC | Salt Lake | 3 hr |
| Aug 1, 7:58 PM MDT | Flash Flood Warning | SLC | Davis | 3 hr |
| Aug 1, 8:25 PM MDT | Areal Flood Advisory | SLC | Davis | 3 hr |
| Aug 1, 8:51 PM MDT | Areal Flood Advisory | SLC | Utah | 114 min |
| Aug 1, 9:06 PM MDT | Areal Flood Advisory | SLC | Davis, Weber | 3 hr |
| Aug 2, 2:04 AM MDT | Flash Flood Watch | SLC | Beaver, Box Elder, Cache, Carbon, Davis, Duchesne and 19 more | 18 hr |
| Aug 2, 1:16 PM MDT | Flash Flood Warning | SLC | Carbon | 3 hr |
| Aug 2, 1:27 PM MDT | Flash Flood Warning | SLC | Emery | 3 hr |
| Aug 2, 2:30 PM MDT | Flash Flood Warning | SLC | Wayne | 4 hr |
| Aug 2, 2:56 PM MDT | Flash Flood Warning | SLC | Garfield, Wayne | 3 hr |
| Aug 2, 3:32 PM MDT | Special Weather Statement | SLC | Emery | 43 min |
| Aug 2, 3:52 PM MDT | Flash Flood Warning | SLC | Garfield | 4 hr |
| Aug 2, 4:00 PM MDT | Special Weather Statement | SLC | Juab | 45 min |
| Aug 2, 4:14 PM MDT | Flash Flood Warning | SLC | Garfield, San Juan | 3 hr |
| Aug 2, 4:25 PM MDT | Special Weather Statement | SLC | 50 min | |
| Aug 2, 4:55 PM MDT | Special Weather Statement | SLC | 50 min | |
| Aug 2, 5:22 PM MDT | Special Weather Statement | SLC | Box Elder | 38 min |
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.