Alert archive / Utah / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 21, NWS Salt Lake City, UT

May 13, 20264 counties in Utah; Uinta County, Wyoming

NWS Salt Lake City, UT issued this severe thunderstorm warning at May 13, 2026, 4:05 PM MDT for 4 counties in Utah; Uinta County, Wyoming. It was in force for 55 min. 6 reports 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
May 13, 2026, 4:05 PM MDT (22:05 UTC)
Expired
May 13, 2026, 5:00 PM MDT
In force
55 min
Issued by
NWS Salt Lake City, UT
Area
Storm-based polygon
Damage threat
Considerable
Hail
0.75 in
Wind
70.0 mph

Counties Duchesne County, UT, Morgan County, UT, Rich County, UT, Summit County, UT, Uinta County, WY

The radar

The Salt Lake City radar (KMTX), 133 km from the middle of the area, began a volume at 22:09 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

TimeReportWhereRemark
May 13, 4:28 PM MDTTSTM WND GST 693 W Evanston, WYASOS station KEVW Evanston-Uinta Cnty Airport.
May 13, 4:31 PM MDTTSTM WND GST 592 Sw Castle Rock, UTMesonet station UR400 2.4 SW Castle Rock.
May 13, 4:36 PM MDTTSTM WND GST 705 N Altamont, WYMesonet station KFIR First Divide.
May 13, 4:36 PM MDTTSTM WND GST 795 Ene Almy, WYMesonet station AV868 Medicine Butte Mountain.
May 13, 4:40 PM MDTTSTM WND GST 855 Ene Almy, WYMesonet station PC450 Evanston North.
May 13, 4:46 PM MDTTSTM WND GST 582 N Ragen, WYMesonet station WY33 Coal Road.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 13, 1:52 PM MDTSevere Thunderstorm WatchSPC6 hr

The text

As transmitted.

427 
WUUS55 KSLC 132205
SVRSLC
UTC013-029-033-043-WYC041-132300-
/O.NEW.KSLC.SV.W.0021.260513T2205Z-260513T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Salt Lake City UT
405 PM MDT Wed May 13 2026

The National Weather Service in Salt Lake City has issued a

* Severe Thunderstorm Warning for...
  Southeastern Rich County in northern Utah...
  Northwestern Duchesne County in northern Utah...
  Northeastern Morgan County in northern Utah...
  Summit County in northern Utah...
  Western Uinta County in southwestern Wyoming...

* Until 500 PM MDT.

* At 403 PM MDT, elevated thunderstorms with a history of producing 
  gusty and erratic outflow winds in excess of 70 mph were located 
  along a line extending from 8 miles east of Morgan to 6 miles 
  northwest of Mirror Lake, moving north at 45 mph.

  HAZARD...70 mph wind gusts. 

  SOURCE...Radar indicated. The Windy Peak weather station on the 
           north slope of the Uintas recorded a gust to 72 mph.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Evanston, Coalville, Oakley, Mirror Lake, Henefer, Hoytsville,
  Echo, Almy, Altamont, Echo Reservoir, Ragen, Wahsatch, Emory,
  Castle Rock, Croydon, Trial Lk, Piedmont, and Leroy.

This includes the following highways...
 Interstate 80 in Wyoming between mile markers 1 and 27.
 Interstate 84 between mile markers 108 and 119.
 Interstate 80 in Utah between mile markers 159 and 196.
 Mirror Lake Highway between mile markers 26 and 27, and between mile
markers 29 and 54.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4077 11062 4062 11113 4107 11163 4158 11104
      4158 11100 4135 11060 4104 11036
TIME...MOT...LOC 2203Z 192DEG 40KT 4108 11153 4074 11100 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

BW
2 follow-up statements
944 
WWUS55 KSLC 132237
SVSSLC

Severe Weather Statement
National Weather Service Salt Lake City UT
437 PM MDT Wed May 13 2026

UTC029-132246-
/O.CAN.KSLC.SV.W.0021.000000T0000Z-260513T2300Z/
Morgan UT-
437 PM MDT Wed May 13 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MORGAN COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM MDT for
northern Utah...and southwestern Wyoming.

LAT...LON 4071 11084 4068 11093 4142 11120 4158 11103
      4158 11100 4135 11060 4104 11036 4077 11062
TIME...MOT...LOC 2236Z 270DEG 40KT 4140 11140 4106 11087 

$$

UTC013-033-043-WYC041-132300-
/O.CON.KSLC.SV.W.0021.000000T0000Z-260513T2300Z/
Rich UT-Duchesne UT-Summit UT-Uinta WY-
437 PM MDT Wed May 13 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM MDT
FOR SOUTHEASTERN RICH...NORTHWESTERN DUCHESNE...CENTRAL SUMMIT AND
WESTERN UINTA COUNTIES...

At 436 PM MDT, severe thunderstorms were located along a line
extending from 15 miles southwest of Woodruff to 14 miles south of
Evanston, moving east at 45 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated. Evanston-Uinta County Airport reported a 
         gust of 69 mph.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Evanston, Mirror Lake, Wahsatch, Ragen, Almy, Altamont, Piedmont, and
Leroy.

This includes the following highways...
 Interstate 80 in Wyoming between mile markers 1 and 27.
 Interstate 80 in Utah between mile markers 191 and 196.
 Mirror Lake Highway between mile markers 30 and 54.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4071 11084 4068 11093 4142 11120 4158 11103
      4158 11100 4135 11060 4104 11036 4077 11062
TIME...MOT...LOC 2236Z 270DEG 40KT 4140 11140 4106 11087 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

BW
803 
WWUS55 KSLC 132256
SVSSLC

Severe Weather Statement
National Weather Service Salt Lake City UT
456 PM MDT Wed May 13 2026

UTC013-033-043-WYC041-132305-
/O.EXP.KSLC.SV.W.0021.000000T0000Z-260513T2300Z/
Rich UT-Duchesne UT-Summit UT-Uinta WY-
456 PM MDT Wed May 13 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN RICH...
NORTHWESTERN DUCHESNE...CENTRAL SUMMIT AND WESTERN UINTA COUNTIES
WILL EXPIRE AT 500 PM MDT...

The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 800 PM MDT for
northern Utah...and southwestern Wyoming.

Remember, a Severe Thunderstorm Warning still remains in effect for
eastern portions of Uinta County and far northern Duchesne County.

LAT...LON 4071 11084 4068 11093 4142 11120 4158 11103
      4158 11100 4135 11060 4104 11036 4077 11062
TIME...MOT...LOC 2255Z 192DEG 40KT 4157 11135 4123 11082 

$$

BW

The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 12, 11:59 PM MDTHigh Wind WarningSLCBox Elder, Salt Lake, Tooele, Utah27 hr
May 13, 1:07 PM MDTSpecial Weather StatementSLCSalt Lake38 min
May 13, 1:19 PM MDTSevere Thunderstorm WarningSLCBox Elder, Tooele41 min
May 13, 1:26 PM MDTSpecial Weather StatementSLCSalt Lake34 min
May 13, 1:36 PM MDTSpecial Weather StatementSLC24 min
May 13, 1:44 PM MDTSevere Thunderstorm WarningSLCDavis, Salt Lake31 min
May 13, 1:48 PM MDTSpecial Weather StatementSLCKane27 min
May 13, 1:54 PM MDTSevere Thunderstorm WarningSLCBox Elder, Tooele51 min
May 13, 2:24 PM MDTSevere Thunderstorm Warning Considerable damage threatSLCBox Elder, Davis, Tooele, Weber41 min
May 13, 2:25 PM MDTSpecial Weather StatementSLCGarfield50 min
May 13, 2:33 PM MDTSpecial Weather StatementSLCSevier42 min
May 13, 2:36 PM MDTSpecial Weather StatementSLCUtah24 min
May 13, 2:36 PM MDTSevere Thunderstorm WarningSLCBox Elder39 min
May 13, 2:48 PM MDTSpecial Weather StatementSLCRich27 min
May 13, 2:50 PM MDTSpecial Weather StatementSLCTooele40 min
May 13, 2:58 PM MDTSevere Thunderstorm WarningSLCUtah, Wasatch32 min
May 13, 3:01 PM MDTSevere Thunderstorm WarningSLCSalt Lake, Utah29 min
May 13, 3:04 PM MDTSevere Thunderstorm WarningSLCBox Elder, Cache, Davis, Morgan, Tooele, Weber41 min
May 13, 3:11 PM MDTSevere Thunderstorm WarningSLCDavis, Salt Lake, Tooele, Utah19 min
May 13, 3:12 PM MDTSpecial Weather StatementSLCEmery48 min
May 13, 3:17 PM MDTSevere Thunderstorm WarningSLCBox Elder28 min
May 13, 3:28 PM MDTSevere Thunderstorm WarningSLCDavis, Morgan, Salt Lake, Tooele17 min
May 13, 3:29 PM MDTSpecial Weather StatementSLCSummit, Wasatch46 min
May 13, 3:44 PM MDTSevere Thunderstorm Warning Considerable damage threatSLCBox Elder, Cache, Davis, Morgan, Weber26 min
May 13, 3:48 PM MDTSevere Thunderstorm WarningSLCCarbon, Duchesne, Emery, Sanpete, Utah, Wasatch27 min
May 13, 3:57 PM MDTSevere Thunderstorm WarningSLCJuab, Sanpete, Utah33 min
May 13, 4:08 PM MDTSevere Thunderstorm Warning Considerable damage threatSLCBox Elder, Cache, Davis, Morgan, Rich, Weber52 min
May 13, 4:25 PM MDTSpecial Weather StatementSLCSalt Lake35 min
May 13, 4:40 PM MDTSpecial Weather StatementSLCDuchesne, Wasatch50 min
May 13, 4:41 PM MDTSevere Thunderstorm Warning Considerable damage threatSLCRich, Summit49 min
May 13, 5:14 PM MDTSpecial Weather StatementSLCSanpete31 min
May 13, 5:42 PM MDTSpecial Weather StatementSLCSanpete33 min
May 13, 2:31 PM MDTSpecial Weather StatementSLCUinta44 min

Nearby

Severe Thunderstorm Warnings in Utah, 2026Severe Thunderstorm Warnings in Wyoming, 2026Every severe thunderstorm warning in 2026

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; radar from the NEXRAD Level II archive.