Flash Flood Warning 67, NWS Salt Lake City, UT

109 
WGUS75 KSLC 100150
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
750 PM MDT Sun Aug 9 2026

UTC025-100345-
/O.CON.KSLC.FF.W.0067.000000T0000Z-260810T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane UT-
750 PM MDT Sun Aug 9 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM MDT THIS
EVENING FOR NORTH CENTRAL KANE COUNTY...

At 750 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 0.25 and 1 inch of rain has
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 normally dry washes, slot
         canyons, creeks, and streams.

Some locations that will experience flash flooding include...
  Willis Creek, Bull Valley Gorge, Sheep Creek and other nearby
  drainages.

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.

&&

LAT...LON 3754 11214 3749 11201 3743 11203 3741 11209
      3749 11226 3754 11222

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

$$

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901 
WGUS75 KSLC 100338
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
938 PM MDT Sun Aug 9 2026

UTC025-100348-
/O.EXP.KSLC.FF.W.0067.000000T0000Z-260810T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane UT-
938 PM MDT Sun Aug 9 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 945 PM MDT THIS EVENING FOR
NORTH CENTRAL KANE COUNTY...

The heavy rain has ended. Enhanced runoff will continue through the
overnight hours.  Use caution in this area.

&&

LAT...LON 3754 11214 3749 11201 3743 11203 3741 11209
      3749 11226 3754 11222

$$

CRK

Area Forecast Discussion
National Weather Service Salt Lake City UT
608 PM MDT Sun Aug 9 2026

.KEY MESSAGES, Issued 1211 PM MDT Sun Aug 9 2026...

- Dangerous heat will persist across portions of northern Utah and
  the low desert of southern Utah on Sunday before high
  temperatures trend lower.

- A marginal risk of excessive rainfall will continue across much
  of Utah through the next five days. Expect an increased threat
  of flash flooding, primarily across slot canyons, normally dry
  washes, slick rock areas, and recent burn scars.

&&

.DISCUSSION, Issued 1211 PM MDT Sun Aug 9 2026...
High pressure residing over the Four Corners
continues to allow monsoonal moisture to move into the region
from the south. This moisture is primarily limited to the mid-
levels currently, with dry low levels supporting the threat of
strong outflow winds as thunderstorms develop again this
afternoon. Convection will be fairly widespread today, with model
soundings suggesting MUCAPE around 200-500 J/kg coupled with
minimal shear and steep low-level lapse rates...a favorable dry
microburst environment. The HREF maximum suggests upper-end wind
gusts around 50-60 mph, particularly across western and southern
Utah where instability is the greatest.

Similar to yesterday, flash flooding remains a threat across the
area despite these dry low levels and slightly faster storm
motions today. The highest rainfall rates yesterday were up to
0.50"/hour, with high-res guidance suggesting similar rates today.
Although storm motions are faster, convective coverage is a bit
higher today, resulting in this increased threat of flash flooding
over sensitive areas.

Monsoonal moisture will continue to gradually increase through at
least Wednesday, with storms trending wetter alongside a higher
flash flood threat. Even after Wednesday, although confidence is
a bit lower, moisture is likely to remain elevated heading into
next weekend. A developing trough over the west coast is the
reason for this lower forecast confidence, which may nudge the
ridge and main moisture plume eastward.

As for heat across the region, although high temperatures have
decreased by a couple degrees today, nighttime cloud cover left minimum
temperatures this morning only dipping into the upper-70s along
the Wasatch Front and low- to mid-80s down in St. George. Heat
effects are cumulative, therefore have continued the going Extreme
Heat Warnings and Heat Advisories for these areas, which are set
to expire later this evening as high temperatures continue to
trend lower through the week. In fact, forecast highs are
currently down to the low-80s along the Wasatch Front by Friday as
that trough develops; this is 10-15 degrees below normal.

&&

.AVIATION...KSLC...The SLC terminal will see VFR conditions through
the day with some scattered clouds. Southerly winds are likely to
persist through the night and into Monday morning. However, there is
a 40 percent chance that outflow from nearby thunderstorms will
bring periods of gusty and erratic winds to the terminal, primarily
between 02-05z this evening, and a 30 percent chance of these
thunderstorms crossing within 5SM of the terminal. Northerly winds
are expected to develop around 19-20z Monday, but may become gusty
and erratic due to the potential (30% chance) for another round of
thunderstorms to impact the terminal between 19-23z.

REST OF UTAH AND SOUTHWEST WYOMING...Generally VFR conditions will
prevail across the airspace tonight into Monday. Scattered showers
and thunderstorms will taper off after 06z, then redevelop Monday
afternoon. Pockets of heavy rain and gusty winds may bring brief
MVFR conditions and ceilings that could result in temporary mountain
obscurations. Outside of showers and thunderstorms, generally light
diurnal winds can be expected. Locally reduced visibility in smoke
will occur near several large wildfires including near Richfield,
near Cedar City, near Morgan, and between Ephraim and Huntington.

&&

.FIRE WEATHER, Issued 1256 PM MDT Sun Aug 9 2026...
Monsoonal moisture will continue to gradually
increase statewide through at least Wednesday, resulting in
increasing coverage of showers and thunderstorms, particularly
across higher terrain. Today, storms will feature a mix of strong
outflow winds statewide and some wetting rains primarily across
southern Utah. Wind gusts could reach 50-60 mph with collapsing
storms. As moisture continues to increase this week, relative
humidities and wetting rain chances will increase alongside
decreasing temperatures. Daily afternoon showers and thunderstorms
will persist likely through the week, with fairly light winds
expected outside of any outflow.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Extreme Heat Warning until midnight MDT tonight for UTZ101-102-
     104-105.

     Heat Advisory until midnight MDT tonight for UTZ103-106-107-116.

     Extreme Heat Warning until 9 PM MDT this evening for UTZ123-124-
     131.

WY...Red Flag Warning until 9 PM MDT this evening for WYZ277.

&&

PUBLIC...Cunningham
AVIATION...Cheng
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
149 PM MDT Sun Aug 9 2026

UTZ125-127-128-092015-
South Central Utah UT-Bryce Canyon Country UT-Southern Mountains UT-
149 PM MDT Sun Aug 9 2026

...A strong thunderstorm will impact portions of southwestern
Garfield and north central Kane Counties through 215 PM MDT
...

At 149 PM MDT, Doppler radar was tracking a strong thunderstorm 8
miles west of Bryce Canyon National Park, or 36 miles north of Kanab,
moving east 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...
Bryce Canyon National Park.

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 3749 11245 3763 11240 3762 11216 3742 11224
TIME...MOT...LOC 1949Z 277DEG 13KT 3754 11233

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

HRM

Special Weather Statement
National Weather Service Salt Lake City UT
248 PM MDT Sun Aug 9 2026

UTZ112-092130-
Western Uinta Mountains UT-
248 PM MDT Sun Aug 9 2026

...A strong thunderstorm will impact portions of southwestern Summit
County through 330 PM MDT
...

At 248 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles northeast of Oakley, or 15 miles southeast of Coalville, moving
southeast at 10 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...
Trial Lake.

This includes Mirror Lake Highway between mile markers 37 and 39.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

&&

LAT...LON 4078 11129 4090 11113 4078 11084 4060 11108
TIME...MOT...LOC 2048Z 312DEG 7KT 4081 11114

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

CRK

Special Weather Statement
National Weather Service Salt Lake City UT
353 PM MDT Sun Aug 9 2026

UTZ125-128>130-092230-
Capitol Reef National Park and Vicinity UT-South Central Utah UT-
Western Canyonlands UT-Southern Mountains UT-
353 PM MDT Sun Aug 9 2026

...A strong thunderstorm will impact portions of central Garfield
County through 430 PM MDT
...

At 352 PM MDT, Doppler radar was tracking a strong thunderstorm 21
miles southeast of Capitol Reef National Park, moving east at 30 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.

This storm will remain over mainly rural areas of central Garfield
County.

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 3778 11118 3798 11120 3803 11074 3775 11071
TIME...MOT...LOC 2152Z 268DEG 28KT 3789 11101

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

HRM

Special Weather Statement
National Weather Service Salt Lake City UT
417 PM MDT Sun Aug 9 2026

UTZ101-115-092300-
Western Millard and Juab Counties UT-
Great Salt Lake Desert and Mountains UT-
417 PM MDT Sun Aug 9 2026

...Strong thunderstorms will impact portions of north central
Millard, central Juab and southwestern Tooele Counties through 500 PM
MDT
...

At 416 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 20 miles south of Wendover to 17 miles
northwest of Delta. Movement was northeast at 30 mph.

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

SOURCE...Mesonet indicated.

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

Locations impacted include...
Dugway Proving Ground Test Range, Fish Springs Wildlife Refuge, Utah
Test and Training Range South, Ibapah, Callao, Little Sahara State
Park, Sugarville, and Bonneville Salt Flats.

This includes the following highways...
 Interstate 80 in Utah between mile markers 8 and 25.
 US Route 6 between mile markers 110 and 117.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4066 11404 4086 11372 3963 11219 3930 11312
      3998 11405
TIME...MOT...LOC 2216Z 244DEG 31KT 4045 11416 3949 11285

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

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