Alert archive / Utah / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 46, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 29, 2021, 4:48 PM MDT for Garfield County, Iron County, Utah. It was in force for 27 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 29, 2021, 4:48 PM MDT (22:48 UTC)
- Expired
- Jul 29, 2021, 5:15 PM MDT
- In force
- 27 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Garfield County, UT, Iron County, UT
The radar
The Cedar City radar (KICX), 23 km from the middle of the area, began a volume at 22:50 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
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 10.8 hours before the alert went out and 275 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
- 156 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 1821 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
543
WUUS55 KSLC 292248
SVRSLC
UTC017-021-292315-
/O.NEW.KSLC.SV.W.0046.210729T2248Z-210729T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Salt Lake City UT
448 PM MDT Thu Jul 29 2021
The National Weather Service in Salt Lake City has issued a
* Severe Thunderstorm Warning for...
Southwestern Garfield County in southern Utah...
Southeastern Iron County in southern Utah...
* Until 515 PM MDT
* At 448 PM MDT, a severe thunderstorm was located 9 miles south of
Panguitch Lake, or 26 miles east of Cedar City, moving northwest 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.
* Locations impacted include...
Panguitch Lake.
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 3755 11251 3755 11264 3769 11279 3776 11257
TIME...MOT...LOC 2248Z 145DEG 11KT 3759 11260
HAIL...1.00IN
WIND...60MPH
$$
ND2 follow-up statements
366
WWUS55 KSLC 292301
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
501 PM MDT Thu Jul 29 2021
UTC017-021-292315-
/O.CON.KSLC.SV.W.0046.000000T0000Z-210729T2315Z/
Garfield UT-Iron UT-
501 PM MDT Thu Jul 29 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM MDT
FOR WESTERN GARFIELD AND SOUTHEASTERN IRON COUNTIES...
At 500 PM MDT, a severe thunderstorm was located near Panguitch Lake,
or 24 miles east of Cedar City, moving northwest at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Panguitch Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3758 11254 3757 11266 3769 11279 3776 11257
TIME...MOT...LOC 2300Z 145DEG 11KT 3762 11263
HAIL...1.00IN
WIND...60MPH
$$
ND193
WWUS55 KSLC 292312
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
512 PM MDT Thu Jul 29 2021
UTC017-021-292321-
/O.EXP.KSLC.SV.W.0046.000000T0000Z-210729T2315Z/
Garfield UT-Iron UT-
512 PM MDT Thu Jul 29 2021
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN GARFIELD AND
SOUTHEASTERN IRON COUNTIES WILL EXPIRE AT 515 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 heavy rain
is still possible with this thunderstorm.
LAT...LON 3758 11254 3757 11266 3769 11279 3776 11257
TIME...MOT...LOC 2311Z 145DEG 11KT 3764 11265
$$
NDThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 7:56 PM MDT | Special Weather Statement | SLC | Tooele | 49 min |
| Jul 28, 9:52 PM MDT | Special Weather Statement | SLC | Davis | 83 min |
| Jul 29, 2:38 AM MDT | Flash Flood Watch | SLC | Emery, Garfield, Kane, San Juan, Sevier, Washington and 1 more | 21 hr |
| Jul 29, 1:40 PM MDT | Special Weather Statement | SLC | Iron | 20 min |
| Jul 29, 2:00 PM MDT | Severe Thunderstorm Warning | SLC | Iron, Washington | 30 min |
| Jul 29, 2:17 PM MDT | Special Weather Statement | SLC | Piute | 28 min |
| Jul 29, 2:26 PM MDT | Special Weather Statement | SLC | Beaver | 34 min |
| Jul 29, 2:39 PM MDT | Severe Thunderstorm Warning | SLC | Beaver, Iron | 36 min |
| Jul 29, 2:50 PM MDT | Areal Flood Advisory | SLC | Beaver | 115 min |
| Jul 29, 3:13 PM MDT | Special Weather Statement | SLC | Beaver | 32 min |
| Jul 29, 3:33 PM MDT | Special Weather Statement | SLC | Iron | 27 min |
| Jul 29, 3:54 PM MDT | Special Weather Statement | SLC | Millard | 36 min |
| Jul 29, 4:11 PM MDT | Special Weather Statement | SLC | 34 min | |
| Jul 29, 4:22 PM MDT | Special Weather Statement | SLC | Juab | 23 min |
| Jul 29, 4:37 PM MDT | Special Weather Statement | SLC | Garfield | 23 min |
| Jul 29, 4:54 PM MDT | Severe Thunderstorm Warning | SLC | Piute, Sevier | 36 min |
| Jul 29, 5:18 PM MDT | Special Weather Statement | SLC | Garfield | 27 min |
| Jul 29, 5:42 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | 33 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.