Alert archive / Utah / Flash Flood Warnings in 2026

Flash Flood Warning 80, NWS Salt Lake City, UT

August 14, 2026Washington County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Aug 14, 2026, 9:23 AM MDT for Washington County, Utah. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 14, 2026, 9:23 AM MDT (15:23 UTC)
Expired
Aug 14, 2026, 1:30 PM MDT
In force
4 hr
Issued by
NWS Salt Lake City, UT
Area
Storm-based polygon
Damage threat
Considerable
Flood severity
None

County Washington County, UT

The radar

The Cedar City radar (KICX), 63 km from the middle of the area, began a volume at 15:21 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

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 161 minutes after it went out.

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

Las Vegas, NV (KVEF), launched 12:00Z, 3.4 hours before the alert went out and 240 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, Las Vegas, NV at 12:00Z on 2026-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 233 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, Las Vegas, NV at 12:00Z on 2026-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 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
233 J/kg
Mixed-layer CIN
-123 J/kg
Mixed-layer LCL
2555 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

108 
WGUS55 KSLC 141523
FFWSLC
UTC053-141830-
/O.NEW.KSLC.FF.W.0080.260814T1523Z-260814T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Salt Lake City UT
923 AM MDT Fri Aug 14 2026

The National Weather Service in Salt Lake City has issued a

* Flash Flood Warning for...
  Southeastern Washington County in southwestern Utah...

* Until 1230 PM MDT.

* At 923 AM MDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 0.25 and 0.5 inches of
  rain have fallen. Flash flooding is ongoing or expected to begin
  shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms producing
           flash flooding.

  SOURCE...Radar indicated.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Water Canyon into the Hildale area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3700 11310 3709 11294 3707 11290 3705 11290
      3700 11293

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

JCW
3 follow-up statements
084 
WGUS75 KSLC 141627
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
1027 AM MDT Fri Aug 14 2026

UTC053-141830-
/O.CON.KSLC.FF.W.0080.000000T0000Z-260814T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington UT-
1027 AM MDT Fri Aug 14 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 PM MDT THIS
AFTERNOON FOR SOUTHEASTERN WASHINGTON COUNTY...

At 1027 AM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1 and 1.5 inches of rain have
fallen. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Radar indicated.

IMPACT...Life threatening flash flooding of creeks and streams, urban
         areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
Water Canyon into the Hildale area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3700 11310 3709 11294 3707 11290 3705 11290
      3700 11293

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

JCW
652 
WGUS55 KSLC 141707
FFWSLC
UTC053-141930-
/O.EXT.KSLC.FF.W.0080.000000T0000Z-260814T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Salt Lake City UT
1107 AM MDT Fri Aug 14 2026

The National Weather Service in Salt Lake City has extended the

* Flash Flood Warning for...
  Southeastern Washington County in southwestern Utah...

* Until 130 PM MDT.

* At 1107 AM MDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 1 and 1.5 inches of rain
  have fallen. Flash flooding is ongoing or expected to begin
  shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms producing
           flash flooding.

  SOURCE...Radar and automated gauges. The North Fork Virgin River
           near Springdale has spiked, indicating a flood wave may be
           progressing down the Virgin River with impacts along SR-9
           expected over the next 1-2 hours.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Water Canyon into the Hildale area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3700 11310 3709 11294 3707 11290 3705 11290
      3700 11293

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

JCW
456 
WGUS75 KSLC 141921
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
121 PM MDT Fri Aug 14 2026

UTC053-141931-
/O.EXP.KSLC.FF.W.0080.000000T0000Z-260814T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington UT-
121 PM MDT Fri Aug 14 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 130 PM MDT THIS AFTERNOON FOR
SOUTHEASTERN WASHINGTON COUNTY...

The heavy rain has ended. Flood waters have receded. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.

A Flood Watch remains in effect until 1200 AM MDT Saturday for
portions of central, southern, and southwest Utah.

&&

LAT...LON 3700 11310 3709 11294 3707 11290 3705 11290
      3700 11293

$$

JCW

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Aug 14, 5:22 AM MDT, 4 hours 1 minute earlier.

Area forecast discussion, Aug 14, 5:22 AM MDT, 4 hours 1 minute before
Area Forecast Discussion
National Weather Service Salt Lake City UT
522 AM MDT Fri Aug 14 2026

.KEY MESSAGES, Issued 139 AM MDT Fri Aug 14 2026...

- A flood watch for flash flooding is now in effect through Friday
  evening for portions of central and southern Utah. Flash
  flooding is most likely in normally dry washes, slot canyons,
  slick rock areas, and recent burn scars.

- Much drier conditions will build into the region this weekend
  into early next week. Elevated to locally critical fire weather
  conditions will occur across portions of central and southern
  Utah Tuesday and Wednesday.

&&

.DISCUSSION, Issued 1050 PM MDT Thu Aug 13 2026...
The forecast area remains sandwiched between an area of high
pressure to the east and a broad area of low pressure off to the
west, with shortwave energy continuing to lift through the region
this evening. The pairing of the shortwave energy and the
monsoonal moisture on the western periphery of the ridge continues
to support shower and thunderstorm activity across the region,
with a rather widespread area of stratiform rain across a portion
of northern Utah. Isolated thunderstorms continue to build in
west-central and southwest Utah this evening, with isolated to
widely scattered storms expected to continue into the early
morning hours across this same region. As such, the threat for
heavy rainfall and flash flooding will remain somewhat elevated
through early Friday morning, with primary concern areas being the
Cottonwood burn scar and Widemouth 2 scar.

Moisture remains in place through the day tomorrow with another
subtle shortwave trough lifting through the region which will help
to bring another round of showers and thunderstorms across the
forecast area. As has been the case for the past several days, the
increase in atmospheric moisture and instability in place across
the region will bring the potential for heavy rainfall and flash
flooding with developing thunderstorms if they end up in the wrong
place (i.e. burn scars, slot canyons, dry washes, and poor
drainage / urbanized areas).

Increasing subsidence in the wake of this shortwave will spread
over the region over the weekend, helping to decrease the overall
coverage of showers and thunderstorms areawide. That said,
moisture will still remain in place and allow for at least
isolated showers and thunderstorms to develop over the high
terrain features, particularly in southern Utah and in the Uinta
Mountains. Coverage of precipitation will decrease further into
Monday and Tuesday as mid-level moisture wanes, however, we'll
increase chances once again on Wednesday as the northern stream
becomes more active.

&&

.AVIATION...

KSLC...Expect southerly winds to continue at the terminal through
the morning, shifting to the northwest around 20-21Z. Another
round of showers and thunderstorms will shift north into the
terminal area near 00Z, with gusty winds and ceilings around 5000
feet or so. Expect any remnant convection to largely end by 03Z.

REST OF UTAH AND SOUTHWEST WYOMING...Another round of showers and
thunderstorms will develop across central and southern Utah after
18Z, reaching the southern-most portion of the Wasatch Front after
21Z...and then shifting north with time. Activity will wane after
03Z. Very heavy rain, gusty and erratic winds and periods of MVFR
conditions will occur with the stronger thunderstorms.

&&

.FIRE WEATHER, Issued 139 AM MDT Fri Aug 14 2026...
One more day of widespread showers and
thunderstorms is expected as this monsoon surge comes to an end.
High pressure will shift eastward, with Utah transitioning to a
dry southwest to west flow through at least midweek. Minimum
humidities will fall to critical levels for most valley locations
Sunday into Monday.

A system crossing to the north may bump winds enough on Tuesday
and Wednesday to bring elevated to locally critical fire weather
conditions to portions of central and southern Utah each afternoon
and evening.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Flood Watch through this evening for UTZ116-117-122>129.

WY...None.
&&

Kruse/Webber

For more information from NOAA's National Weather Service visit...
http://weather.gov/saltlakecity

In the hours before

Special weather statement, Aug 14, 8:15 AM MDT, 1 hour 8 minutes before
Special Weather Statement
National Weather Service Salt Lake City UT
815 AM MDT Fri Aug 14 2026

UTZ123>125-141500-
Southern Mountains UT-Zion National Park UT-
Lower Washington County UT-
815 AM MDT Fri Aug 14 2026

...A strong thunderstorm will impact portions of southeastern
Washington County through 900 AM MDT
...

At 815 AM MDT, Doppler radar was tracking a strong thunderstorm over
Quail Creek State Park, or 22 miles west of Zion National Park,
moving northeast at 15 mph.

HAZARD...Wind gusts up to 50 mph and half inch 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, Washington, Hurricane, La Verkin, Quail Creek
State Park, Sand Hollow State Park, Toquerville, Leeds, Virgin, and
Pintura.

This includes Interstate 15 between mile markers 17 and 35.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3720 11350 3744 11333 3729 11305 3712 11337
TIME...MOT...LOC 1415Z 216DEG 14KT 3720 11342

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

JCW
Special weather statement, Aug 14, 8:27 AM MDT, 56 minutes before
Special Weather Statement
National Weather Service Salt Lake City UT
827 AM MDT Fri Aug 14 2026

UTZ123-125-141500-
Southern Mountains UT-Lower Washington County UT-
827 AM MDT Fri Aug 14 2026

...Strong thunderstorms will impact portions of southwestern
Washington County through 900 AM MDT
...

At 826 AM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Virgin River Campground to near Virgin
River Gorge. Movement was north at 25 mph.

HAZARD...Wind gusts up to 50 mph and half inch 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...
St George, Washington, Santa Clara, Gunlock State Park, Ivins,
Bloomington, and Snow Canyon State Park.

This includes the following highways...
 Interstate 15 between mile markers 1 and 13.
 Utah Route 18 between mile markers 0 and 14.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3700 11401 3721 11398 3733 11336 3700 11359
TIME...MOT...LOC 1426Z 202DEG 20KT 3695 11371 3692 11387

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

JCW

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 6:07 PM MDTSevere Thunderstorm Warning Considerable damage threatSLCSalt Lake, Tooele, Utah53 min
Aug 13, 6:22 PM MDTFlash Flood Warning Considerable damage threatSLCTooele3 hr
Aug 13, 6:59 PM MDTSpecial Weather StatementSLCUtah, Wasatch46 min
Aug 13, 7:11 PM MDTAreal Flood AdvisorySLCSalt Lake64 min
Aug 13, 7:53 PM MDTSpecial Weather StatementSLCSummit, Wasatch52 min
Aug 14, 8:15 AM MDTSpecial Weather StatementSLCWashington45 min
Aug 14, 8:27 AM MDTSpecial Weather StatementSLCWashington33 min
Aug 14, 8:43 AM MDTSevere Thunderstorm WarningSLCWashington21 min
Aug 14, 9:08 AM MDTFlash Flood Warning Considerable damage threatSLCKane, Washington4 hr
Aug 14, 9:33 AM MDTFlash Flood Warning Considerable damage threatSLCWashington4 hr
Aug 14, 2:15 PM MDTSpecial Weather StatementSLCSalt Lake45 min
Aug 14, 2:40 PM MDTSpecial Weather StatementSLCJuab50 min
Aug 14, 3:08 PM MDTSpecial Weather StatementSLCSalt Lake52 min
Aug 14, 3:18 PM MDTAreal Flood AdvisorySLCSalt Lake117 min
Aug 14, 3:55 PM MDTSpecial Weather StatementSLCSalt Lake50 min
Aug 14, 3:57 PM MDTAreal Flood AdvisorySLCSalt Lake63 min
Aug 14, 4:06 PM MDTSpecial Weather StatementSLCTooele39 min
Aug 14, 4:08 PM MDTSpecial Weather StatementSLCTooele52 min
Aug 14, 4:27 PM MDTSpecial Weather StatementSLCIron48 min
Aug 14, 4:34 PM MDTSpecial Weather StatementSLCJuab41 min
Aug 14, 4:48 PM MDTSpecial Weather StatementSLCTooele42 min

Nearby

Flash Flood Warnings in Utah, 2026Every flash flood 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.