Flash Flood Warning 86, NWS Salt Lake City, UT

011 
WGUS75 KSLC 250122
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
722 PM MDT Mon Aug 24 2026

UTC025-250500-
/O.CON.KSLC.FF.W.0086.000000T0000Z-260825T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane UT-
722 PM MDT Mon Aug 24 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 11 PM MDT THIS EVENING
FOR SOUTH CENTRAL KANE COUNTY...

At 722 PM MDT, the public reported high flows on upper reaches of the
Paria River south of Tropic several hours ago. This flood wave will
continue to move downstream past Highway 89 and into the Lower Paria
River Canyon. Flash flooding is already occurring.

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

SOURCE...National Park Service reported.

IMPACT...Life threatening flash flooding of creeks, streams, slot
         canyons, and normally dry washes.

Some locations that will experience flash flooding include...
  Areas along the Paria River in South Central Kane County, including
  the Lower Paria River Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for flooding even in locations not receiving rain. Dry
washes, streams, and rivers can become raging killer currents in a
matter of minutes, even from distant rainfall.

Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.

&&

LAT...LON 3723 11192 3700 11184 3700 11188 3720 11195

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

$$

CRK

814 
WGUS55 KSLC 250422
FFWSLC
UTC025-250700-
/O.EXT.KSLC.FF.W.0086.000000T0000Z-260825T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Salt Lake City UT
1022 PM MDT Mon Aug 24 2026

The National Weather Service in Salt Lake City has extended the

* Flash Flood Warning for...
  South Central Kane County in southern Utah...

* Until 100 AM MDT.

* At 1022 PM MDT, gauge reports indicate a large flood wave on the
  Paria River just crossed under US-89 and will continue to travel
  south toward the Arizona border along the Paria River. Flash
  flooding is already occurring.

  HAZARD...Life threatening flash flooding.

  SOURCE...Gauges reported.

  IMPACT...Life threatening flash flooding of the Paria River.

* Some locations that will experience flash flooding include...
  Areas along the Paria River in South Central Kane County, including
  the Lower Paria River Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for flooding even in locations not receiving rain. Dry
washes, streams, and rivers can become raging killer currents in a
matter of minutes, even from distant rainfall.

Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.

&&

LAT...LON 3723 11192 3700 11184 3700 11188 3720 11195

FLASH FLOOD...GAUGE INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

CRK

663 
WGUS75 KSLC 250658
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
1258 AM MDT Tue Aug 25 2026

UTC025-250708-
/O.EXP.KSLC.FF.W.0086.000000T0000Z-260825T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane UT-
1258 AM MDT Tue Aug 25 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 1 AM MDT EARLY THIS MORNING FOR
SOUTH CENTRAL KANE 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.

&&

LAT...LON 3723 11192 3700 11184 3700 11188 3720 11195

$$

HM

Area Forecast Discussion
National Weather Service Salt Lake City UT
102 PM MDT Mon Aug 24 2026

.KEY MESSAGES, Issued 1242 PM MDT Mon Aug 24 2026...

- Scattered showers and thunderstorms will develop this afternoon
  and evening, with the greatest chance for gusty outflow winds
  expected over northern Utah and southwest Wyoming.

- Daily afternoon thunderstorms will persist through much of the
  week, primarily over higher terrain. An isolated flash flood
  threat today will continue to trend lower.

- Another round of more widespread thunderstorms is increasing in
  likelihood for Friday into early next weekend.

&&

.DISCUSSION, Issued 1242 PM MDT Mon Aug 24 2026...
Utah and southwest Wyoming remain on the western
periphery of a fairly stagnant ridge centered over NM/CO, with a
bit of lingering mid-level moisture resulting in scattered
showers and thunderstorms this afternoon. The main threats will be
a mix of gusty outflow winds and moderate-heavy rainfall, thus an
isolated flash flood threat still exists. Compared to yesterday,
there is a bit less shear and instability, thus the severe
thunderstorm wind threat is lower. Still, storms will be capable
of producing outflow winds in excess of 50-60 mph, particularly
across northern Utah and southwest Wyoming.

Tomorrow, as this mid-level moisture slowly decreases, shower
activity will be lower, with a lower flash flood threat
accordingly. Storms will largely form and remain over higher
terrain through the week, though drier conditions on Thursday and
maybe Friday could limit this potential.

Model guidance is trending towards some increase in moisture as
early as Friday as southwesterly flow increases across the area.
Deterministic guidance suggests a grazing shortwave trough
potentially bringing a cold front as far south as northern Utah
late this weekend, though ensemble guidance as a whole isn't as
forward with the trough. If this does occur, this could increase
the chances for severe thunderstorms, flash flooding, and/or fire
weather concerns, depending on how exactly it plays out and how
much moisture increases across the area.

&&

.AVIATION, Issued 1242 PM MDT Mon Aug 24 2026...

KSLC...VFR conditions will persist for the KSLC terminal through the
period. Dry conditions will continue through the early afternoon
before isolated convection develops after 20z with ~40% chance of
impacting the terminal. This activity becomes less convective and
more showery overnight. Winds are expected to shift to northerlies
between 19-20z, with a 20% chance of southwesterlies persisting a
bit past 20z, aside from variable and gusty winds associated with
precipitation near the terminal.

REST OF UTAH AND SOUTHWEST WYOMING...VFR conditions will persist for
the entire airspace through the period. Dry conditions will persist
through the early afternoon before more convection develops across
most of the airspace. This activity will transition to more showery
precipitation across the northern airspace overnight. Winds will
remain light before becoming breezy out of the southwest this
afternoon.

&&

.FIRE WEATHER...High pressure will remain largely stagnant over the
Four Corners through the week, with lingering moisture resulting
in daily thunderstorms over higher terrain, despite a slow drying
trend. Overnight RH recoveries will remain good through at least
Wednesday, with daytime RH approaching critical across western
valleys and far southern Utah (St. George through Lake Powell and
up to Canyonlands). The driest days will likely be Thursday and
potentially Friday, too.

Southwesterly winds will begin to increase towards the end of the
week as a stronger low pressure system moves into the PNW.
Model guidance is also trending towards an increase in moisture
heading into the weekend, though uncertainty in the magnitude of this
moisture still raises questions regarding fire weather concerns.
Another wildcard is the potential for a grazing wave later this
weekend which could produce a cold front moving through northern
Utah. Forecast confidence remains very low at this time.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...None.
WY...None.
&&

PUBLIC...Cunningham
AVIATION...Verzella
FIRE WEATHER...Cunningham

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

Special Weather Statement
National Weather Service Salt Lake City UT
133 PM MDT Mon Aug 24 2026

UTZ101-242000-
Great Salt Lake Desert and Mountains UT-
133 PM MDT Mon Aug 24 2026

...A strong thunderstorm will impact portions of west central Box
Elder County through 200 PM MDT
...

At 132 PM MDT, Doppler radar was tracking a strong thunderstorm 26
miles north of Montello, moving northeast at 25 mph.

HAZARD...Wind gusts up to 50 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...
Grouse Creek and Etna.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4183 11404 4165 11374 4153 11404
TIME...MOT...LOC 1932Z 229DEG 20KT 4164 11407

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

JAC

Special Weather Statement
National Weather Service Salt Lake City UT
300 PM MDT Mon Aug 24 2026

UTZ115>119-242200-
Sanpete Valley UT-Western Millard and Juab Counties UT-
Sevier Valley UT-Central Mountains UT-
Eastern Juab/Millard Counties UT-
300 PM MDT Mon Aug 24 2026

...Strong thunderstorms will impact portions of southwestern Sanpete,
northern Millard, southeastern Juab and north central Sevier Counties
through 400 PM MDT
...

At 300 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 27 miles southeast of Garrison to near
Richfield. Movement was northeast at 25 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Delta, Fillmore, Moroni, Scipio, Gunnison, Meadow, Wales, Fayette,
Centerfield, Levan, Hinckley, Oak City, Holden, Leamington, Lynndyl,
Abraham, Flowell, Greenwood, Mc Cornick, and Yuba Lake State Park.

This includes the following highways...
 Interstate 15 between mile markers 151 and 211.
 Interstate 70 between mile markers 44 and 46.
 US Route 6 between mile markers 35 and 107.
 US Route 50 between mile markers 90 and 155.
 US Route 89 between mile markers 238 and 243.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

These storms 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 3954 11309 3956 11150 3882 11202 3880 11362
TIME...MOT...LOC 2100Z 218DEG 22KT 3875 11357 3881 11205

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

JCW

Special Weather Statement
National Weather Service Salt Lake City UT
324 PM MDT Mon Aug 24 2026

UTZ101-242215-
Great Salt Lake Desert and Mountains UT-
324 PM MDT Mon Aug 24 2026

...Strong thunderstorms will impact portions of southwestern Box
Elder and northwestern Tooele Counties through 415 PM MDT
...

At 323 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 11 miles east of Oasis to 10 miles north of
West Wendover. Movement was northeast at 20 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Lucin.

This includes Utah Route 30 between mile markers 1 and 4.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

These storms 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 4084 11404 4146 11404 4108 11356 4081 11403
      4083 11405
TIME...MOT...LOC 2123Z 223DEG 19KT 4108 11427 4091 11405

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

JCW

Special Weather Statement
National Weather Service Salt Lake City UT
330 PM MDT Mon Aug 24 2026

UTZ101-242215-
Great Salt Lake Desert and Mountains UT-
330 PM MDT Mon Aug 24 2026

...Strong thunderstorms will impact portions of southwestern Box
Elder and northwestern Tooele Counties through 415 PM MDT
...

At 330 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Wendover to 15 miles southeast of West
Wendover. Movement was northeast at 15 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Wendover, Utah Test and Training Range South, and Bonneville Salt
Flats.

This includes Interstate 80 in Utah between mile markers 1 and 26.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

These storms 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 4082 11404 4109 11356 4066 11353 4047 11405
TIME...MOT...LOC 2130Z 221DEG 13KT 4082 11400 4058 11397

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

JCW