Alert archive / Utah / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 21, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jun 6, 2025, 2:57 PM MDT for Carbon County, Emery County, Utah. It was in force for 33 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 6, 2025, 2:57 PM MDT (20:57 UTC)
- Expired
- Jun 6, 2025, 3:30 PM MDT
- In force
- 33 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Carbon County, UT, Emery County, UT
The radar
The Grand Junction radar (KGJX), 178 km from the middle of the area, began a volume at 21:00 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 6, 3:20 PM MDT | HAIL 1 | 1 E Sunnyside, UT | Penny to quarter hail in Sunnyside. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Grand Junction, CO (KGJT), launched 12:00Z, 9.0 hours before the alert went out and 152 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
- 15 J/kg
- Mixed-layer CIN
- -184 J/kg
- Mixed-layer LCL
- 1145 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
583
WUUS55 KSLC 062057
SVRSLC
UTC007-015-062130-
/O.NEW.KSLC.SV.W.0021.250606T2057Z-250606T2130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Salt Lake City UT
257 PM MDT Fri Jun 6 2025
The National Weather Service in Salt Lake City has issued a
* Severe Thunderstorm Warning for...
Northeastern Emery County in central Utah...
Southeastern Carbon County in central Utah...
* Until 330 PM MDT.
* At 257 PM MDT, a severe thunderstorm was located over Sunnyside, or
19 miles east of Price, moving southeast at 25 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...
Sunnyside and East Carbon.
This includes US Route 6 between mile markers 256 and 260.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3929 11016 3953 11059 3969 11047 3954 11004
3950 11002 3947 11002
TIME...MOT...LOC 2057Z 300DEG 22KT 3958 11044
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JCW1 follow-up statement
174
WWUS55 KSLC 062123
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
323 PM MDT Fri Jun 6 2025
UTC007-015-062130-
/O.CON.KSLC.SV.W.0021.000000T0000Z-250606T2130Z/
Emery UT-Carbon UT-
323 PM MDT Fri Jun 6 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM MDT
FOR NORTHEASTERN EMERY AND SOUTHEASTERN CARBON COUNTIES...
At 323 PM MDT, a severe thunderstorm was located 8 miles southeast of
Sunnyside, or 29 miles east of Price, moving southeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Sunnyside and East Carbon.
This includes US Route 6 between mile markers 259 and 260.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 3950 11054 3961 11046 3950 11002 3947 11002
3929 11016
TIME...MOT...LOC 2123Z 300DEG 22KT 3950 11026
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JCWThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 7:20 PM MDT | Flash Flood Warning | SLC | Washington | 115 min |
| Jun 6, 1:10 PM MDT | Special Weather Statement | SLC | Kane | 35 min |
| Jun 6, 1:27 PM MDT | Special Weather Statement | SLC | Carbon | 33 min |
| Jun 6, 1:47 PM MDT | Flash Flood Warning | SLC | Garfield | 3 hr |
| Jun 6, 2:03 PM MDT | Special Weather Statement | SLC | Carbon | 42 min |
| Jun 6, 2:14 PM MDT | Special Weather Statement | SLC | Garfield | 46 min |
| Jun 6, 2:16 PM MDT | Special Weather Statement | SLC | Beaver | 44 min |
| Jun 6, 2:40 PM MDT | Special Weather Statement | SLC | Wayne | 50 min |
| Jun 6, 2:44 PM MDT | Special Weather Statement | SLC | Carbon | 46 min |
| Jun 6, 2:53 PM MDT | Flash Flood Warning | SLC | Wayne | 3 hr |
| Jun 6, 3:29 PM MDT | Special Weather Statement | SLC | Carbon | 46 min |
| Jun 6, 3:30 PM MDT | Areal Flood Advisory | SLC | Carbon, Emery | 2 hr |
| Jun 6, 3:50 PM MDT | Special Weather Statement | SLC | Wayne | 40 min |
| Jun 6, 3:53 PM MDT | Special Weather Statement | SLC | Iron | 52 min |
| Jun 6, 4:09 PM MDT | Severe Thunderstorm Warning | SLC | Emery | 17 min |
Nearby
Severe Thunderstorm Warnings in Utah, 2025Every severe thunderstorm warning in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.