Flash Flood Warning 25, NWS Salt Lake City, UT

909 
WGUS75 KSLC 180256
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
856 PM MDT Fri Jul 17 2026

UTC053-180400-
/O.CON.KSLC.FF.W.0025.000000T0000Z-260718T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington UT-
856 PM MDT Fri Jul 17 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS 
EVENING FOR CENTRAL WASHINGTON COUNTY...

At 856 PM MDT, Doppler radar indicated earlier thunderstorms 
produced heavy rain across Red Cliffs Recreation Area and Leeds 
Creek. Between 0.75 and 1.75 inches of rain have fallen. Flooding 
impacts will continue, but no additional rainfall is expected. Flash 
flooding is ongoing or expected to begin shortly.

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

SOURCE...Radar.

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

Some locations that will experience flash flooding include...
  Washington, Toquerville and Leeds.

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 3728 11350 3734 11343 3729 11331 3717 11346
      3723 11352

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

$$

JAC

385 
WGUS75 KSLC 180355
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
955 PM MDT Fri Jul 17 2026

UTC053-180405-
/O.EXP.KSLC.FF.W.0025.000000T0000Z-260718T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington UT-
955 PM MDT Fri Jul 17 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 10 PM MDT THIS EVENING FOR 
CENTRAL WASHINGTON COUNTY...

The heavy rain has ended. 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 for portions of 
southern and southwest Utah.

&&

LAT...LON 3728 11350 3734 11343 3729 11331 3717 11346
      3723 11352

$$

JAC

Area Forecast Discussion
National Weather Service Salt Lake City UT
637 PM MDT Fri Jul 17 2026

.KEY MESSAGES, Issued 1210 PM MDT Fri Jul 17 2026...

- 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 exists 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. A Slight Risk (2/4) of exceeding flash flood guidance exists
across southwest UT this afternoon and Saturday.

- A Flash Flood Watch remains in effect for southern UT and portions
of Central UT this afternoon, ending around midnight. Another Flash
Flood Watch has been issued for tomorrow afternoon, encompassing the
same areas.

&&

.DISCUSSION, Issued 1210 PM MDT Fri Jul 17 2026...
 A favorable monsoon pattern persists across the
southwest as large-scale ridging remains overhead. Beneath this
ridge, moisture continues to advect north across UT raising PWATs
areawide in excess of 1" of water across nearly all valley locations
with lower Washington county potentially seeing PWATs in excess of
1.6" this afternoon. This pattern is forecast to persist over the
next week or so, keeping chances for rain and thunderstorms each
afternoon in the forecast for most locations across the state with a
particular emphasis on southern UT. Chances for rain and
thunderstorms begin to increase across northern UT today, increasing
more near the end of the week as deeper moisture continues to advect
north.

With PWAT anomalies statewide ranging from 0.5" to nearly 1" this
afternoon, the threat for flash flooding is expected to continue.
The threat remains elevated due to weak steering flow aloft yielding
storm motions generally around 10kts or less. While this has
increased somewhat over the past couple days, deeper moisture
coupled with a taller, skinnier CAPE profile (potentially in excess
of 1000J/kg) with a deeper warm cloud layer supports another round
of efficient rainmakers with heavy rain expected from mature storms.
The stronger instability axis with CAPE values >= 1000J/kg currently
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. The main concern with a more elevated flooding threat
further southeast would be cold pool development as storms propagate
west potentially raising CIN across southeastern UT. If initiation
were to occur earlier, however, a locally higher flooding threat may
develop across southeastern UT this afternoon. A nearly identical
threat exists Saturday as well given similar synoptics and moisture
quality across the region.

From Sunday on, some uncertainty develops regarding storm motions
which would potentially inhibit the flash flood threat. While
quality moisture remains in place, storm motions may potentially see
a slight uptick beginning Sunday as the aforementioned ridge slowly
shifts east. Slightly stronger southwest flow continues to push in
each afternoon from Monday on, potentially inhibiting this further
as storms may tend to move off terrain quicker instead of training
over one location. These details may be difficult to iron out fully
until the day before, though isolated flash flooding is expected at
a minimum each day going forward from Sunday on.

&&

.AVIATION...KSLC...A general easterly wind can be expected this
evening, transitioning to southeasterly after around 03-04z where
they will generally remain for the rest of the night. Typical
northwesterly diurnal winds are expected again around 18z Saturday.
There is a 30 percent chance or less of rain showers through around
03z this evening, with less than a 20 percent chance of lightning.
There is a 30% chance of showers and thunderstorms Saturday
afternoon which could briefly drop VIS into the MVFR category.
Otherwise, VFR conditions are expected to prevail.

REST OF UTAH AND SOUTHWEST WYOMING...Scattered showers and
thunderstorms will continue across the airspace this evening before
gradually diminishing. Greatest coverage will favor southwest Utah
and northeast Utah, with potential to produce heavy rainfall that
may drop VIS into MVFR. Across the northern portion of the airspace,
storms will be capable of producing gusty and erratic outflow winds
to 30 kts through this evening. Scattered to numerous showers and
thunderstorms can be expected to develop again Saturday afternoon.

&&

.FIRE WEATHER, Issued 1228 PM MDT Fri Jul 17 2026...
Currently, monsoonal moisture continues to surge north
into UT increasing humidities and raising chances for showers and
thunderstorms across the state, both serving to moderate fire
weather conditions. Chances for showers and thunderstorms remain
highest across southwest UT, high terrain from southern to northern
UT, and the Uintas generally ranging from 60-90%. Additionally,
these locations are where a wetting rain is favored this afternoon.
Moisture continues to surge into northern UT into this weekend,
keeping chances for showers and thunderstorms elevated into next
week each afternoon.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Flood Watch until midnight MDT tonight for UTZ122>128.

     Flood Watch from Saturday afternoon through Saturday evening for
     UTZ122>128.

WY...None.
&&

PUBLIC...Worster
AVIATION...Cheng
FIRE WEATHER...Worster

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

Special Weather Statement
National Weather Service Salt Lake City UT
426 PM MDT Fri Jul 17 2026

UTZ122-125-172300-
Southwest Utah UT-Southern Mountains UT-
426 PM MDT Fri Jul 17 2026

...A strong thunderstorm will impact portions of northern Washington
and southwestern Iron Counties through 500 PM MDT
...

At 426 PM MDT, Doppler radar was tracking a strong thunderstorm 17
miles northeast of Beaver Dam, moving southeast at 5 mph.

HAZARD...Half inch hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Enterprise.

This includes Utah Route 18 near mile marker 40, and between mile
markers 46 and 49.

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 3758 11395 3772 11388 3769 11363 3757 11370
      3751 11379
TIME...MOT...LOC 2226Z 301DEG 5KT 3764 11377

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

JAC

Special Weather Statement
National Weather Service Salt Lake City UT
531 PM MDT Fri Jul 17 2026

UTZ101-105-106-111-180015-
Salt Lake Valley UT-Utah Valley UT-
Great Salt Lake Desert and Mountains UT-Wasatch Mountains South of I-
80 UT-
531 PM MDT Fri Jul 17 2026

...A strong thunderstorm will impact portions of south central Salt
Lake and northwestern Utah Counties through 615 PM MDT
...

At 531 PM MDT, Doppler radar was tracking a strong thunderstorm near
Bluffdale, or 10 miles southwest of Sandy, moving northeast at 10
mph.

HAZARD...Pea size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
South Jordan, Lehi, Draper, Riverton, American Fork, Herriman, Eagle
Mountain, Alpine, Bluffdale, Camp Williams, Saratoga Springs, and
Highland.

This includes Interstate 15 between mile markers 280 and 290.

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 4033 11195 4041 11210 4055 11202 4050 11184
      4043 11175
TIME...MOT...LOC 2331Z 217DEG 9KT 4043 11194

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...<40 MPH

JAC

Preliminary Local Storm Report
National Weather Service Salt Lake City UT
617 PM MDT Fri Jul 17 2026

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

0430 PM     Flash Flood      1 SW Marysvale          38.43N 112.27W
07/17/2026                   Piute              UT   Emergency Mngr

            Mayrsvale EM reported debris flow in Bullion
            canyon with flash flood waters making it
            US-89 under the bridge level.

&&

DEC

Special Weather Statement
National Weather Service Salt Lake City UT
617 PM MDT Fri Jul 17 2026

UTZ107-180045-
Cache Valley/Utah Portion UT-
617 PM MDT Fri Jul 17 2026

...A strong thunderstorm will impact portions of northwestern Cache
County through 645 PM MDT
...

At 616 PM MDT, Doppler radar was tracking a strong thunderstorm near
Cache, or 7 miles northwest of Logan, moving northeast at 10 mph.

HAZARD...Pea size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Logan, Cache, Smithfield, Trenton, Benson, Peter, Newton, and Amalga.

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 4191 11188 4186 11180 4184 11179 4174 11192
      4178 11201 4179 11199 4185 11204 4193 11202
TIME...MOT...LOC 0016Z 205DEG 10KT 4183 11193

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...<40 MPH

JAC

Preliminary Local Storm Report
National Weather Service Salt Lake City UT
625 PM MDT Fri Jul 17 2026

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

0326 PM     Flash Flood      5 SE Eagle Point Ski Re 38.27N 112.31W
07/17/2026                   Piute              UT   Law Enforcement

            Sheriff reported flash flood in City Creek
            that remained within its banks.

&&

DEC

Preliminary Local Storm Report
National Weather Service Salt Lake City UT
628 PM MDT Fri Jul 17 2026

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

0430 PM     Flash Flood      4 SSE Marysvale         38.39N 112.23W
07/17/2026                   Piute              UT   Emergency Mngr

            A secondary flood wave moved down Cottonwood
            Creek reaching US-89. The highway was
            reportedly closed for at least 3 hours.

&&

DEC