Flash Flood Warning 33, NWS Salt Lake City, UT

308 
WGUS75 KSLC 192311
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
511 PM MDT Sun Jul 19 2026

UTC001-200230-
/O.CON.KSLC.FF.W.0033.000000T0000Z-260720T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Beaver UT-
511 PM MDT Sun Jul 19 2026

...FLASH FLOOD WARNING FOR THE COTTONWOOD BURN SCAR IN BEAVER COUNTY 
REMAINS IN EFFECT UNTIL 830 PM MDT THIS EVENING FOR SOUTHEASTERN 
BEAVER COUNTY...

At 511 PM MDT, Flood waters from the large flash flood and debris 
flow has now inundated I-15 and both directions have been closed 
between mile markers 109-111. This flood will continue downstream 
the Beaver River flood plain to Minersville Reservoir. Between 0.5 
and 1.5 inches of rain fell across the majority of basins in the 
headwaters of the Beaver River. Flash flooding is already occurring.

Excessive rainfall over the burn scar has resulted in a debris flow 
moving through the  Beaver River from Beaver City to Minersville 
reservoir. The debris flow can consist of rock, mud, vegetation and 
other loose materials.

HAZARD...Life threatening flash flooding. Flash flooding which
         will continue well downstream of the Cottonwood Burn
         Scar in Beaver County all the way to Minersville
         Reservoir.

SOURCE...Law enforcement reported.

IMPACT...Life threatening flash flooding along the Beaver River
         from Beaver City to Minersville Reservoir

Some locations that will experience flash flooding include...
  Beaver, Adamsville and Minersville Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a life threatening situation. Heavy rainfall will cause 
extensive and severe flash flooding of creeks...streams...and 
ditches in the Cottonwood Burn Scar in Beaver County. Severe debris 
flows can also be anticipated across roads. Roads and driveways may 
be washed away in places. If you encounter flood waters...climb to 
safety.

Move to higher ground now. Act quickly to protect your life.

Be aware of your surroundings and do not drive on flooded roads.

Stay away or be swept away. River banks and culverts can become 
unstable and unsafe.

&&

LAT...LON 3824 11274 3825 11280 3826 11277 3826 11270
      3827 11264 3826 11264 3824 11269

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

GM

553 
WGUS75 KSLC 200102
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
702 PM MDT Sun Jul 19 2026

UTC001-200230-
/O.CON.KSLC.FF.W.0033.000000T0000Z-260720T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Beaver UT-
702 PM MDT Sun Jul 19 2026

...FLASH FLOOD WARNING FOR THE COTTONWOOD BURN SCAR IN BEAVER COUNTY 
REMAINS IN EFFECT UNTIL 830 PM MDT THIS EVENING FOR SOUTHEASTERN 
BEAVER COUNTY...THIS WARNING UPDATE IS SPECIFICALLY FOR AREAS FROM 
BEAVER DOWNSTREAM ALONG THE BEAVER RIVER TO MINERSVILLE RESERVOIR...

At 702 PM MDT, I-15 remains closed as inundation of flood water 
continues between mile markers 109-111. Flash flooding continues to 
move downstream west of I-15 along the Beaver River and is expected 
to reach Minersville Reservoir imminently.

Excessive rainfall over the burn scar has resulted in a debris flow 
moving through the  Beaver River from Beaver City to Minersville 
reservoir. The debris flow can consist of rock, mud, vegetation and 
other loose materials.

The following information is being relayed by Beaver County...
"BEAVER COUNTY ALERT: All of Beaver is now in READY status, prepare 
to evacuate if notified. Please stay out of flood-impacted areas 
unless you are an official responder. Extra traffic and bystanders 
are blocking critical access routes and delaying rescue crews. Help 
us to help others by avoiding flood zones. Thank you!".

HAZARD...Life threatening flash flooding. Flash flooding which
         will continue well downstream of the Cottonwood Burn
         Scar in Beaver County all the way to Minersville
         Reservoir.

SOURCE...Law enforcement reported.

IMPACT...Life threatening flash flooding along the Beaver River
         from Beaver City to Minersville Reservoir

Some locations that will experience flash flooding include...
  Beaver, Adamsville and Minersville Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Follow the orders of Beaver County emergency officials.

Move to higher ground now. Act quickly to protect your life.

Be aware of your surroundings and do not drive on flooded roads.

Stay away or be swept away. River banks and culverts can become 
unstable and unsafe.

&&

LAT...LON 3824 11274 3825 11280 3826 11277 3826 11270
      3827 11264 3826 11264 3824 11269

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

GM

228 
WGUS75 KSLC 200222
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
822 PM MDT Sun Jul 19 2026

UTC001-200232-
/O.EXP.KSLC.FF.W.0033.000000T0000Z-260720T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Beaver UT-
822 PM MDT Sun Jul 19 2026

...FLASH FLOOD WARNING FOR THE COTTONWOOD BURN SCAR IN BEAVER COUNTY 
WILL EXPIRE AT 830 PM MDT THIS EVENING FOR SOUTHEASTERN BEAVER 
COUNTY...

Refer to the latest Flood Warning valid for the next 24 hours, and 
Local Emergency Alerts issued by Beaver County for the latest on 
this major flood event.

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

&&

LAT...LON 3824 11274 3825 11280 3826 11277 3826 11270
      3827 11264 3826 11264 3824 11269

$$

STW

Area Forecast Discussion
National Weather Service Salt Lake City UT
1255 PM MDT Sun Jul 19 2026

.KEY MESSAGES...

- Scattered showers and thunderstorms are expected to develop across
portions of central, southern, northeast UT, and southwest WY each
afternoon within this forecast as monsoonal moisture continues
making its way north.

- The risk for flash flooding continues across the majority of the
forecast area, highlighted by WPC with a Marginal Risk (1/4) of
exceeding flash flood guidance each day encompassing nearly all of
UT through at least Thursday. A Slight Risk (2/4) of exceeding flash
flood guidance exists across southern and central UT this afternoon,
Tuesday afternoon across southwest UT, and Wednesday across northern
UT and southwest WY.

- A Flash Flood Watch remains in effect for southern UT and portions
of Central UT this afternoon, ending around midnight.

- Hazardous temperatures look to develop across northern UT tomorrow
afternoon, particularly along the I-15 corridor and West Desert. As
such, a heat advisory has been issued.

&&

.DISCUSSION... Monsoonal moisture return continues across the
southwest as ridging remains overhead. Beneath this ridge, PWATs in
excess of 1" continue to push north across most valley locations
with locations across southern UT potentially exceeding 1.6" PWATs
once again this afternoon. Daily chances for showers, thunderstorms,
and potentially flash flooding continue through at least Thursday
across southern and central UT with this pattern in place. Modest
moisture return continues to push across northern UT, though most
storms have remained anchored to the terrain further east each
afternoon due to drier PBL conditions across northwest UT valleys
and considerably weaker steering flow. This brings great
uncertainty to the forecast through Tuesday morning, keeping PoPs
somewhat lower across most of the Wasatch Front and northwest UT
compared to higher elevation locations. Deeper moisture looks to
advect further north as some stronger synoptic forcing moves in
from the west, increasing PoPs starting Tuesday afternoon with the
highest confidence of heavy rainfall and Thunderstorms occurring
Wednesday afternoon.

Thunderstorm development across central and southern UT will be
somewhat delayed closer to 3pm today due to an early shortwave
traversing the region, leaving some localized subsidence in its
wake. PWAT anomalies across southern and central UT once again range
from 0.5-1" of water as monsoonal moisture lingers this afternoon.
CAPE profiles potentially in excess of 1000J/kg with deep warm cloud
layers up to 3km continue to support the development of efficient
rainmakers with heavy rain expected from well established storms.
The stronger instability axis with CAPE values >= 1000J/kg once
again resides across southwestern UT, supported by both SPC
Mesoanalysis and current CAM guidance, with storms expected to
initiate along higher terrain and propagate down terrain toward the
instability gradients.

As the ridge builds overhead, temperatures on Monday are forecast to
reach into the upper 90s to low 100s across most valley locations
across northwest UT. This has resulted in widespread "major"
HeatRisk values, primarily within valley locations along the I-15
corridor and Great Salt Lake Desert, with a few areas reaching
"major". Overnight relief following warmer temperatures today are
forecast to increase the threat with overnight lows tonight
generally ranging from the upper 60s to mid 70s. As such, a heat
advisory has been issued for the aforementioned locations.

Forecast guidance continues to bring daily chances of rain across
much of UT through at least Friday, though guidance is now in better
agreement with drier mid-level air pushing into the Great Basin as
we head into the weekend. This dry punch is associated with a mid-
level trough that is forecast to impact the pacific northwest later
this week bringing prolonged dry westerly flow through the end of
the forecast period. This will serve to greatly limit precipitation
chances across the forecast area as we enter the weekend, keeping
any chances more than likely confined to higher terrain.

Lastly, some severe potential exists on Wednesday across northern UT
and southwest WY as a shortwave trough traverses the Great Basin in
the afternoon hours. Confidence regarding timing and location of
this shortwave remain highly uncertain at this time, though the
broad synoptic pattern associated with this would support a
potential damaging wind threat if it were to materialize.

&&

.AVIATION...

KSLC...There is less than a 20% chance of afternoon convection
directly impacting the terminal. Indirectly, any convection in
reasonable proximity will bring potential for gusty, erratic outflow
winds, primarily from the east as in past days with a lesser
potential from the south. In general though, anticipate VFR
conditions to persist with winds returning to SE Sunday evening
between 03-04Z.

REST OF UTAH AND SOUTHWEST WYOMING...Similar pattern evolution
expected today, with convective initiation delayed by 1-2 hours when
compared to recent days, particularly over southern Utah.
Highest coverage expected along and adjacent to Utah's high terrain.
Stronger activity directly over area terminals will bring around a
20-40% chance of brief MVFR conditions, and indirectly will result
in gusty and erratic outflow winds. Look for convection to then wane
gradually during the evening hours.

&&

.FIRE WEATHER...Monsoonal moisture remains across UT increasing
humidities while raising chances for showers and thunderstorms
across the state moderating fire weather conditions overall. Chances
for showers and thunderstorms remain elevated across central and
southern UT, and the Uintas ranging from 50-80%. A wetting rain
remains favored this afternoon across each mentioned location.
Expect showers and thunderstorms to develop along higher terrain
parallel to I-15 each afternoon over the next several days around
1200-1400 with gusty outflow winds, heavy rainfall, and lightning.
Winds will generally remain light terrain driven / diurnal over the
next several days.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Heat Advisory from noon Monday to midnight MDT Monday night for
     UTZ101>105.

     Flood Watch until midnight MDT tonight for UTZ122>128.

WY...None.
&&

PUBLIC...Worster
AVIATION...ADeSmet
FIRE WEATHER...Worster

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

Preliminary Local Storm Report
National Weather Service Salt Lake City UT
1149 AM MDT Sun Jul 19 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0823 PM     Flash Flood      1 S Hildale             37.00N 112.97W
07/18/2026                   Washington         UT   County Official

            Webcams and social media posts showed Short
            Creek overtopping its banks and the culvert
            at Hildale Street.

&&

AD

Preliminary Local Storm Report
National Weather Service Salt Lake City UT
1156 AM MDT Sun Jul 19 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0243 PM     Flash Flood      7 W Hiawatha            39.51N 111.16W
07/18/2026                   Emery              UT   Emergency Mngr

            Emery County Emergency Management reported a
            flash flood and associated closure of SR31
            at Huntington Canyon or milepost 29.

&&

AD

Preliminary Local Storm Report
National Weather Service Salt Lake City UT
116 PM MDT Sun Jul 19 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 PM     Flash Flood      14 SW Green River       38.86N 110.37W
07/17/2026                   Emery              UT   Other Federal

            USGS stream gauge on the Green River at San
            Rafael recorded a flood wave as flow
            increased from 0 cfs to 693 cfs in less than
            3 hours. Flows originated from slot canyons
            and washes on an earlier flash flood warned
            storm upstream over the San Rafael Swell.

&&

AD

Special Weather Statement
National Weather Service Salt Lake City UT
228 PM MDT Sun Jul 19 2026

UTZ125-192115-
Southern Mountains UT-
228 PM MDT Sun Jul 19 2026

...A strong thunderstorm will impact portions of western Garfield and
southeastern Iron Counties through 315 PM MDT
...

At 227 PM MDT, Doppler radar was tracking a strong thunderstorm near
Hatch, or 31 miles east of Cedar City. This storm was nearly
stationary.

HAZARD...Half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Parowan, Cedar Breaks National Monument, Panguitch Lake, and Brian
Head.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3757 11288 3783 11286 3784 11284 3775 11247
      3763 11246 3761 11247
TIME...MOT...LOC 2027Z 078DEG 3KT 3768 11250

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<40 MPH

JCW

Special Weather Statement
National Weather Service Salt Lake City UT
358 PM MDT Sun Jul 19 2026

UTZ122-125-192230-
Southwest Utah UT-Southern Mountains UT-
358 PM MDT Sun Jul 19 2026

...A strong thunderstorm will impact portions of northern Washington
and southwestern Iron Counties through 430 PM MDT
...

At 358 PM MDT, Doppler radar was tracking a strong thunderstorm 20
miles northeast of Beaver Dam, moving southwest at 10 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.

This storm will remain over mainly rural areas of northern Washington
and southwestern Iron Counties.

This includes the following highways...
 Utah Route 18 near mile marker 50.
 Utah Route 56 near mile marker 4, and between mile markers 13 and
24.

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.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3781 11374 3770 11365 3750 11383 3776 11401
TIME...MOT...LOC 2158Z 057DEG 7KT 3771 11377

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

JCW