Alert archive / Utah / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 39, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 12, 2026, 9:18 PM MDT for Iron County, Washington 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 12, 2026, 9:18 PM MDT (03:18 UTC)
- Expired
- Jul 12, 2026, 9:45 PM MDT
- In force
- 27 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Iron County, UT, Washington County, UT
The radar
The Cedar City radar (KICX), 47 km from the middle of the area, began a volume at 03:19 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 3.3 hours before the alert went out and 277 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
- 50 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 2182 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -73 m²/s²
- 0-3 km storm-relative helicity
- -13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
517
WUUS55 KSLC 130318
SVRSLC
UTC021-053-130345-
/O.NEW.KSLC.SV.W.0039.260713T0318Z-260713T0345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Salt Lake City UT
918 PM MDT Sun Jul 12 2026
The National Weather Service in Salt Lake City has issued a
* Severe Thunderstorm Warning for...
Central Washington County in southwestern Utah...
South central Iron County in southern Utah...
* Until 945 PM MDT.
* At 918 PM MDT, severe thunderstorms were located along a line
extending from 6 miles east of New Harmony to La Verkin, moving
west at 20 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Zion National Park, Hurricane, La Verkin, New Harmony, Quail Creek
State Park, Toquerville, Leeds, Virgin, Pintura, Pinto, Pine
Valley, and Kolob Canyon.
This includes Interstate 15 between mile markers 19 and 45.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3759 11353 3721 11357 3716 11316 3733 11310
3750 11310
TIME...MOT...LOC 0318Z 097DEG 18KT 3749 11319 3721 11324
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Webber2 follow-up statements
904
WWUS55 KSLC 130332
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
932 PM MDT Sun Jul 12 2026
UTC021-053-130345-
/O.CON.KSLC.SV.W.0039.000000T0000Z-260713T0345Z/
Washington UT-Iron UT-
932 PM MDT Sun Jul 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM MDT
FOR CENTRAL WASHINGTON AND SOUTH CENTRAL IRON COUNTIES...
At 931 PM MDT, severe thunderstorms were located along a line
extending from near New Harmony to near La Verkin, moving northwest
at 5 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Zion National Park, La Verkin, New Harmony, Toquerville, Leeds,
Virgin, Pintura, and Kolob Canyon.
This includes Interstate 15 between mile markers 22 and 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3757 11347 3751 11317 3733 11315 3721 11318
3724 11351
TIME...MOT...LOC 0331Z 125DEG 5KT 3749 11324 3721 11329
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Webber754
WWUS55 KSLC 130343
SVSSLC
Severe Weather Statement
National Weather Service Salt Lake City UT
943 PM MDT Sun Jul 12 2026
UTC021-053-130353-
/O.EXP.KSLC.SV.W.0039.000000T0000Z-260713T0345Z/
Washington UT-Iron UT-
943 PM MDT Sun Jul 12 2026
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL WASHINGTON AND SOUTH
CENTRAL IRON COUNTIES WILL EXPIRE AT 945 PM MDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
LAT...LON 3757 11347 3751 11317 3733 11315 3721 11318
3724 11351
TIME...MOT...LOC 0343Z 097DEG 18KT 3749 11324 3721 11329
$$
WebberWhat 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 Jul 12, 1:23 PM MDT, 7 hours 55 minutes earlier. Its key messages:
- High temperatures across the region peak today, with many daily, monthly, and all- time records being challenged, particularly over northern portions of the area.
- Temperatures will gradually become less hot during the upcoming week as monsoonal moisture moves into the area. This will increase the threat of precipitation and thus flash flooding, particularly over southern Utah, for much of this week.
Area forecast discussion, Jul 12, 1:23 PM MDT, 7 hours 55 minutes before
Area Forecast Discussion
National Weather Service Salt Lake City UT
123 PM MDT Sun Jul 12 2026
.KEY MESSAGES...
- High temperatures across the region peak today, with many
daily, monthly, and all- time records being challenged,
particularly over northern portions of the area.
- Temperatures will gradually become less hot during the upcoming
week as monsoonal moisture moves into the area. This will
increase the threat of precipitation and thus flash flooding,
particularly over southern Utah, for much of this week.
&&
.DISCUSSION...We are on record temperature watch this afternoon
and evening across Utah and southwest Wyoming as an anomalously
strong ridge of high pressure amplifies across the Rockies. 700
mb temperatures are forecast to maximize around 20-22C late this
afternoon; to put this in context, the highest 700 mb temperature
ever recorded from an upper air sounding at KSLC stands at 20.2C,
observed on 7/13/2002. Also of note, the current 20.2C record
coincides with one of the most significant and widespread
heatwaves for our area, and resulted in SLC recording its second
occurrence on record of an all- time high temperature of 107
degrees. Other locations such as Logan and Evanston are also
likely (over 90% chance) to see highs shatter their current all-
time records of 103 and 95, respectively. Park City will also near
its all-time record of 99 today, but with lower probability to
meet or exceed it, around a 30% chance.
Extreme Heat Warnings continue through Monday morning for most of
the region, but will be allowed to drop off across southern Utah
as a surge of monsoonal moisture begins to move into the area and
limits daytime highs due to increasing cloud cover. The Extreme
Heat Warnings continue Monday into Tuesday morning for the
remainder of Utah and southwest Wyoming given highs only cool a
couple degrees through Monday. Overnight lows also remain warm, around
the mid-70s for most locations, exacerbating heat impacts through
this period.
We will see inklings of this monsoonal surge today as isolated
high-based showers and thunderstorms develop across southwest Utah
this afternoon and evening. Given lower-levels remain dry today,
main impacts from any cells that develop include gusty and erratic
outflow winds to 50 mph as well as dry lightning strikes.
Otherwise, monsoonal moisture becomes widespread across central
and southern Utah on Monday with PWATs approaching 1" across the
area. Deep moisture will continue to become more widespread the
remainder of Utah on Tuesday and linger through the remainder of
the week. When coupled with overall light upper-level steering
flow, this pattern will result in an increased flash flooding
risk through this week, particularly for central and southern
Utah. Areal coverage of storms will vary each day, resulting in
varying levels of flash flood risk through the week. Regardless,
conditions will be favorable for the threat of flash flooding
especially for slot canyons, normally dry washes, and recent burn
scars.
&&
.AVIATION...
KSLC...VFR conditions with diurnally normal winds persist. There is
a 20-30% chance of southerly gusts 20-25 kts or so between 07-14Z
Monday. Winds then expected to shift northwesterly between ~18-20Z
Monday. There will then be potential for southerly outflow wind
gusts between, with timing most likely between 23Z Monday to 04Z
Tuesday.
REST OF UTAH AND SOUTHWEST WYOMING...Isolated to scattered afternoon
showers and thunderstorms will develop across portions of southern
and central Utah. This will bring potential for gusty and erratic
outflow winds, with decreasing threat noted at areas further north
nearer the Idaho border. Aside from this, winds largely anticipated
to follow a typically diurnal pattern, with modest gusts 20-25 kts
or so at typically breezy or exposed terminals. Conditions expected
to remain VFR, though any stronger storm directly atop a terminal
may result in brief reductions to CIGS/VIS.
&&
.FIRE WEATHER...An anomalously strong area of high pressure moves
overhead today, resulting in record heat and very dry conditions
across the region. Some increasing mid-level moisture ahead of
our main monsoonal moisture push will result in isolated high-
based showers and thunderstorms this afternoon and evening across
southwest Utah, capable of producing gusty and erratic outflow
winds and dry lightning strikes. Monsoonal moisture overspreads
most of central and southern Utah on Monday, allowing for more
scattered storm coverage with potential for heavy rainfall under
stronger cores. Showers and thunderstorm become widespread across
the state by Tuesday, bringing flash flood concerns and increasing
chances for wetting rains through the remainder of the week.
&&
.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Extreme Heat Warning until 6 AM MDT Tuesday for UTZ101>108-114-
116-118>121.
Extreme Heat Warning until 6 AM MDT Monday for UTZ115-122-
128>131.
WY...Extreme Heat Warning until 9 PM MDT Monday for WYZ021.
&&
PUBLIC...
AVIATION...
FIRE WEATHER...
For more information from NOAA's National Weather Service visit...
http://weather.gov/saltlakecityIn the hours before
Special weather statement, Jul 12, 7:40 PM MDT, 1 hour 38 minutes before
Special Weather Statement
National Weather Service Salt Lake City UT
740 PM MDT Sun Jul 12 2026
UTZ125-128-130215-
South Central Utah UT-Southern Mountains UT-
740 PM MDT Sun Jul 12 2026
...A strong thunderstorm will impact portions of northwestern Kane
County through 815 PM MDT
...
At 740 PM MDT, Doppler radar was tracking a strong thunderstorm 17
miles north of Kanab, moving northwest at 15 mph.
HAZARD...Wind gusts of 50 to 55 mph and pea 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...
Orderville, Glendale, and Mt Carmel.
This includes US Route 89 between mile markers 79 and 96.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3732 11244 3716 11255 3726 11289 3752 11273
TIME...MOT...LOC 0140Z 120DEG 12KT 3728 11258
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...55 MPH
WebberLocal storm report, Jul 12, 8:16 PM MDT, 1 hour 2 minutes before
Preliminary Local Storm Report
National Weather Service Salt Lake City UT
816 PM MDT Sun Jul 12 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0724 PM Tstm Wnd Gst 2 NW Cedar City 37.70N 113.10W
07/12/2026 M67 MPH Iron UT ASOS
ASOS station KCDC Cedar City Municipal
Airport.
0620 PM Tstm Wnd Gst 2 SW Cove Ft 38.58N 112.60W
07/12/2026 M62 MPH Millard UT Mesonet
Mesonet station UTI70 I-70 at I-15.
0800 PM Tstm Wnd Gst 2 SSW Enoch 37.73N 113.05W
07/12/2026 M58 MPH Iron UT Mesonet
Mesonet station UTNCC I-15 at MP 62 N Cedar
City.
&&Special weather statement, Jul 12, 8:17 PM MDT, 1 hour 1 minute before
Special Weather Statement
National Weather Service Salt Lake City UT
817 PM MDT Sun Jul 12 2026
UTZ124-125-128-130245-
South Central Utah UT-Southern Mountains UT-Zion National Park UT-
817 PM MDT Sun Jul 12 2026
...A strong thunderstorm will impact portions of east central
Washington, northwestern Kane and south central Iron Counties through
845 PM MDT
...
At 816 PM MDT, Doppler radar was tracking a strong thunderstorm 18
miles southeast of Cedar Breaks National Monument, or 18 miles east
of Zion National Park, moving west at 15 mph.
HAZARD...Wind gusts of 50 to 55 mph and pea 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...
Zion National Park and Glendale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3745 11257 3726 11268 3735 11309 3761 11298
TIME...MOT...LOC 0216Z 108DEG 15KT 3739 11271
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...55 MPH
WebberLocal storm report, Jul 12, 9:03 PM MDT, 15 minutes before
Preliminary Local Storm Report
National Weather Service Salt Lake City UT
903 PM MDT Sun Jul 12 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0818 PM Tstm Wnd Dmg 2 NNE Springdale 37.21N 112.99W
07/12/2026 Washington UT Park/Forest Srvc
12 inch diameter tree branch broke off a
Cottonwood tree due to winds and was
blocking a road in Zion National Park.
&&
mtThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 7:35 PM MDT | Severe Thunderstorm Warning | SLC | Iron, Washington | 25 min |
| Jul 12, 7:40 PM MDT | Special Weather Statement | SLC | 35 min | |
| Jul 12, 8:17 PM MDT | Special Weather Statement | SLC | 28 min | |
| Jul 12, 8:47 PM MDT | Severe Thunderstorm Warning | SLC | Iron, Kane, Washington | 28 min |
| Jul 13, 4:39 PM MDT | Flash Flood Warning | SLC | Piute | 3 hr |
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.