Alert archive / Utah / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 6, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at May 16, 2021, 3:24 PM MDT for Tooele County, Utah. It was in force for 51 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
- May 16, 2021, 3:24 PM MDT (21:24 UTC)
- Expired
- May 16, 2021, 4:15 PM MDT
- In force
- 51 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Tooele County, UT
The radar
The Salt Lake City radar (KMTX), 71 km from the middle of the area, began a volume at 21:25 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, 9.4 hours before the alert went out and 74 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
- 528 J/kg
- Mixed-layer CIN
- -208 J/kg
- Mixed-layer LCL
- 1618 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
966
WUUS55 KSLC 162124
SVRSLC
UTC045-162215-
/O.NEW.KSLC.SV.W.0006.210516T2124Z-210516T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Salt Lake City UT
324 PM MDT Sun May 16 2021
The National Weather Service in Salt Lake City has issued a
* Severe Thunderstorm Warning for...
North central Tooele County in northern Utah...
* Until 415 PM MDT
* At 324 PM MDT, a severe thunderstorm was located 9 miles north of
Skull Valley, or 15 miles west of Grantsville, 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...
Delle and Skull Valley.
This includes Interstate 80 in Utah between mile markers 51 and 59,
and between mile markers 63 and 74.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4060 11262 4052 11276 4074 11309 4088 11276
TIME...MOT...LOC 2124Z 150DEG 12KT 4061 11276
HAIL...1.00IN
WIND...60MPH
$$
Webber2 follow-up statements
452
WWUS55 KSLC 162146
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
346 PM MDT Sun May 16 2021
UTC045-162215-
/O.CON.KSLC.SV.W.0006.000000T0000Z-210516T2215Z/
Tooele UT-
346 PM MDT Sun May 16 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM MDT
FOR NORTH CENTRAL TOOELE COUNTY...
At 346 PM MDT, a severe thunderstorm was located 7 miles south of
Delle, or 19 miles west of Grantsville, moving northwest at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Delle.
This includes Interstate 80 in Utah between mile markers 51 and 59,
and between mile markers 63 and 73.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4064 11267 4057 11284 4074 11309 4088 11276
TIME...MOT...LOC 2146Z 144DEG 13KT 4067 11283
HAIL...1.00IN
WIND...60MPH
$$
Webber437
WWUS55 KSLC 162221
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
421 PM MDT Sun May 16 2021
UTC045-162231-
/O.EXP.KSLC.SV.W.0006.000000T0000Z-210516T2215Z/
Tooele UT-
421 PM MDT Sun May 16 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL TOOELE COUNTY
HAS EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been allowed to expire.
LAT...LON 4064 11267 4057 11284 4074 11309 4088 11276
TIME...MOT...LOC 2221Z 150DEG 12KT 4076 11290
$$
WebberThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 6:30 PM MDT | Special Weather Statement | SLC | 45 min | |
| May 16, 1:07 PM MDT | Special Weather Statement | SLC | Salt Lake | 38 min |
| May 16, 1:22 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Salt Lake, Tooele | 23 min |
| May 16, 1:52 PM MDT | Special Weather Statement | SLC | Davis | 38 min |
| May 16, 1:55 PM MDT | Special Weather Statement | SLC | Salt Lake | 35 min |
| May 16, 1:58 PM MDT | Special Weather Statement | SLC | Weber | 47 min |
| May 16, 2:03 PM MDT | Severe Thunderstorm Warning | SLC | Morgan, Weber | 27 min |
| May 16, 2:07 PM MDT | Special Weather Statement | SLC | 38 min | |
| May 16, 2:20 PM MDT | Special Weather Statement | SLC | Salt Lake | 40 min |
| May 16, 2:29 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Weber | 31 min |
| May 16, 2:31 PM MDT | Special Weather Statement | SLC | Davis | 44 min |
| May 16, 2:50 PM MDT | Special Weather Statement | SLC | 55 min | |
| May 16, 3:00 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Weber | 30 min |
| May 16, 3:04 PM MDT | Special Weather Statement | SLC | Tooele | 41 min |
| May 16, 3:30 PM MDT | Special Weather Statement | SLC | Cache | 45 min |
| May 16, 3:32 PM MDT | Special Weather Statement | SLC | Weber | 43 min |
| May 16, 4:15 PM MDT | Special Weather Statement | SLC | Box Elder | 45 min |
| May 16, 4:19 PM MDT | Special Weather Statement | SLC | Box Elder | 41 min |
| May 16, 4:39 PM MDT | Special Weather Statement | SLC | Box Elder | 51 min |
| May 16, 5:07 PM MDT | Special Weather Statement | SLC | Box Elder | 53 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.