Alert archive / Utah / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 105, NWS Salt Lake City, UT

August 30, 2026Utah County, Wasatch County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Aug 30, 2026, 7:51 AM MDT for Utah County, Wasatch County, Utah. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 30, 2026, 7:51 AM MDT (13:51 UTC)
Expired
Aug 30, 2026, 8:15 AM MDT
In force
24 min
Issued by
NWS Salt Lake City, UT
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Utah County, UT, Wasatch County, UT

The radar

The Salt Lake City radar (KMTX), 144 km from the middle of the area, began a volume at 13:53 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, 1.9 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.

Skew-T log-pSkew-T log-p diagram, Salt Lake City I, UT at 12:00Z on 2026-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 457 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 12:00Z on 2026-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
457 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
1263 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
23 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Salt Lake City, UT wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 30, 6:47 AM MDT, 1 hour 4 minutes earlier.

Area forecast discussion, Aug 30, 6:47 AM MDT, 1 hour 4 minutes before
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In the hours before

Special weather statement, Aug 30, 4:46 AM MDT, 3 hours 5 minutes before
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Special weather statement, Aug 30, 5:15 AM MDT, 2 hours 36 minutes before
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Local storm report, Aug 30, 7:27 AM MDT, 24 minutes before
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Local storm report, Aug 30, 7:29 AM MDT, 22 minutes before
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Local storm report, Aug 30, 7:30 AM MDT, 21 minutes before
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Special weather statement, Aug 30, 7:36 AM MDT, 15 minutes before
Special Weather Statement
National Weather Service Salt Lake City UT
736 AM MDT Sun Aug 30 2026

UTZ106-108-111>113-301415-
Wasatch Back UT-Wasatch Plateau/Book Cliffs UT-Utah Valley UT-
Western Uinta Mountains UT-Wasatch Mountains South of I-80 UT-
736 AM MDT Sun Aug 30 2026

...A strong thunderstorm will impact portions of southeastern Salt
Lake, northern Wasatch, southwestern Summit and north central Utah
Counties through 815 AM MDT
...

At 736 AM MDT, Doppler radar was tracking a strong thunderstorm near
Lindon, or 9 miles north of Provo, moving east at 50 mph.

HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Provo, Park City, Heber City, Orem, Lehi, Draper, Pleasant Grove,
American Fork, Heber, Lindon, Alpine, Kamas, Oakley, Francis, Daniel,
Vineyard, Wasatch Mountain State Park, Samak, Timber Lakes, and
Little Cottonwood Canyon.

This includes the following highways...
 Interstate 15 between mile markers 269 and 279.
 US Route 40 between mile markers 6 and 34.
 Utah Route 35 between mile markers 0 and 21.
 Mirror Lake Highway between mile markers 0 and 17.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4026 11184 4050 11183 4086 11100 4032 11101
TIME...MOT...LOC 1336Z 254DEG 44KT 4038 11165

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH

CRK

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 7:01 PM MDTSpecial Weather StatementSLCDuchesne29 min
Aug 29, 7:09 PM MDTSpecial Weather StatementSLCSalt Lake36 min
Aug 29, 8:30 PM MDTSpecial Weather StatementSLCJuab30 min
Aug 29, 8:38 PM MDTSevere Thunderstorm WarningSLCJuab, Millard37 min
Aug 29, 9:11 PM MDTSevere Thunderstorm WarningSLCJuab, Millard34 min
Aug 29, 9:41 PM MDTSpecial Weather StatementSLCJuab34 min
Aug 30, 1:34 AM MDTSpecial Weather StatementSLCTooele26 min
Aug 30, 4:09 AM MDTSpecial Weather StatementSLCTooele36 min
Aug 30, 4:46 AM MDTSpecial Weather StatementSLCSalt Lake29 min
Aug 30, 5:15 AM MDTSpecial Weather StatementSLCSalt Lake30 min
Aug 30, 7:36 AM MDTSpecial Weather StatementSLCWasatch39 min
Aug 30, 8:14 AM MDTSpecial Weather StatementSLCWasatch46 min
Aug 30, 10:22 AM MDTSpecial Weather StatementSLCEmery38 min
Aug 30, 12:11 PM MDTAreal Flood AdvisorySLCKane2 hr
Aug 30, 12:16 PM MDTSpecial Weather StatementSLCKane44 min
Aug 30, 12:45 PM MDTSevere Thunderstorm WarningSLCKane45 min
Aug 30, 1:12 PM MDTFlash Flood Warning Considerable damage threatSLCKane3 hr
Aug 30, 1:26 PM MDTSpecial Weather StatementSLC49 min
Aug 30, 1:31 PM MDTSpecial Weather StatementSLCSevier44 min
Aug 30, 1:52 PM MDTSpecial Weather StatementSLCMillard53 min
Aug 30, 1:58 PM MDTSpecial Weather StatementSLCKane47 min
Aug 30, 2:00 PM MDTSevere Thunderstorm WarningSLCMillard, Sevier30 min
Aug 30, 2:01 PM MDTSevere Thunderstorm WarningSLCMillard, Sevier29 min
Aug 30, 2:03 PM MDTFlash Flood Warning Considerable damage threatSLCGarfield, Kane, San Juan6 hr
Aug 30, 2:15 PM MDTSpecial Weather StatementSLC45 min
Aug 30, 2:16 PM MDTFlash Flood Warning Considerable damage threatSLCEmery, Wayne3 hr
Aug 30, 2:19 PM MDTFlash Flood Warning Considerable damage threatSLCKane5 hr
Aug 30, 2:28 PM MDTFlash Flood Warning Considerable damage threatSLCKane7 hr
Aug 30, 2:33 PM MDTSevere Thunderstorm WarningSLCKane42 min
Aug 30, 2:46 PM MDTFlash Flood Warning Considerable damage threatSLCGarfield, Kane5 hr
Aug 30, 2:56 PM MDTFlash Flood Warning Considerable damage threatSLCKane5 hr
Aug 30, 2:56 PM MDTSpecial Weather StatementSLC49 min
Aug 30, 3:05 PM MDTSevere Thunderstorm WarningSLCKane, San Juan25 min
Aug 30, 3:09 PM MDTSpecial Weather StatementSLCEmery51 min
Aug 30, 3:14 PM MDTSpecial Weather StatementSLCUtah46 min
Aug 30, 3:37 PM MDTFlash Flood Warning Considerable damage threatSLCWayne4 hr
Aug 30, 3:37 PM MDTSpecial Weather StatementSLCSan Juan38 min
Aug 30, 3:38 PM MDTSpecial Weather StatementSLC52 min
Aug 30, 3:39 PM MDTSpecial Weather StatementSLCJuab51 min
Aug 30, 4:00 PM MDTSpecial Weather StatementSLCUtah45 min
Aug 30, 4:15 PM MDTSpecial Weather StatementSLCKane45 min
Aug 30, 4:23 PM MDTSevere Thunderstorm WarningSLCUtah37 min
Aug 30, 4:25 PM MDTSpecial Weather StatementSLCJuab50 min
Aug 30, 4:50 PM MDTSevere Thunderstorm WarningSLCWayne40 min
Aug 30, 5:24 PM MDTSpecial Weather StatementSLCWayne51 min
Aug 30, 5:32 PM MDTSpecial Weather StatementSLCWasatch43 min
Aug 30, 5:38 PM MDTSpecial Weather StatementSLCUtah52 min

Nearby

Severe Thunderstorm Warnings in Utah, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.