Flash Flood Warning 24, NWS Salt Lake City, UT

495 
WGUS75 KSLC 180202
FFSSLC

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

UTC053-180300-
/O.CON.KSLC.FF.W.0024.000000T0000Z-260718T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington UT-
802 PM MDT Fri Jul 17 2026

...FLASH FLOOD WARNING FOR THE FORSYTH BURN SCAR REMAINS IN EFFECT 
UNTIL 9 PM MDT THIS EVENING FOR CENTRAL WASHINGTON COUNTY...

At 802 PM MDT, Doppler radar indicated thunderstorms producing heavy 
rain over the Forsyth Burn Scar. Between 1 and 3 inches of rain have 
fallen. Flooding impacts will continue, but no additional rainfall 
is expected. Flash flooding is ongoing or expected to begin shortly.

Excessive rainfall over the burn scar will result in debris flow 
moving through the Forsyth burn scar and the Santa Clara River. The 
debris flow can consist of rock, mud, vegetation and other loose 
materials.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding in and around the Forsyth Burn Scar.

SOURCE...Radar.

IMPACT...Life threatening flash flooding of areas in and around
         the Forsyth Burn Scar.

Some locations that will experience flash flooding include...
  Pine Valley and Veyo, mainly along the Santa Clara River to just 
  below Baker Dam.

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 Forsyth Burn Scar. 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 away from recently burned areas. Life-threatening flooding of 
creeks, roads and normally dry washes is likely. The heavy rains 
will likely trigger rockslides, mudslides and debris flows in steep 
terrain, especially in and around these areas.

&&

LAT...LON 3736 11350 3739 11352 3740 11356 3740 11360
      3737 11363 3734 11366 3735 11367 3739 11365
      3742 11362 3742 11356 3741 11351 3744 11349
      3746 11346 3747 11343 3745 11338 3742 11338
      3738 11339 3736 11341 3733 11345

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

$$

JAC

120 
WGUS75 KSLC 180257
FFSSLC

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

UTC053-180307-
/O.EXP.KSLC.FF.W.0024.000000T0000Z-260718T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington UT-
857 PM MDT Fri Jul 17 2026

...FLASH FLOOD WARNING FOR THE FORSYTH BURN SCAR WILL EXPIRE AT 9 PM 
MDT THIS EVENING FOR CENTRAL WASHINGTON COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat.

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

&&

LAT...LON 3736 11350 3739 11352 3740 11356 3740 11360
      3737 11363 3734 11366 3735 11367 3739 11365
      3742 11362 3742 11356 3741 11351 3744 11349
      3746 11346 3747 11343 3745 11338 3742 11338
      3738 11339 3736 11341 3733 11345

$$

JAC

Area Forecast Discussion
National Weather Service Salt Lake City UT
1228 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, Issued 1214 PM MDT Fri Jul 17 2026...
KSLC, Issued 1214 PM MDT Fri Jul 17 2026...
Light southerly winds will gradually transition
to northwesterly between 18-19Z. Showers are expected to develop
along the high terrain around 21Z forward. There is around a 30-40%
chance that showers/ thunderstorms move off the terrain and over the
airfield after 23Z, with potential continuing through around 04Z.
These storms will be capable of producing gusty and erratic outflow
winds with gusts to 30 kts. VFR conditions are expected to prevail
through the period, however, any showers moving over the area may
drop VIS to the MVFR category and CIGS to below 6000 feet.

REST OF UTAH AND SOUTHWEST WYOMING...Widespread showers and
thunderstorms are expected across the airspace this afternoon and
evening. Greatest coverage will favor southwest and south-central
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. Otherwise, storms taper off late this evening
across the airspace with generally light winds prevailing areawide.

&&

.FIRE WEATHER...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...Whitlam
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
106 PM MDT Fri Jul 17 2026

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

0500 PM     Flash Flood      6 E Trial Lk            40.69N 110.90W
07/16/2026                   Summit             UT   Public

            Video received via social media of muddy
            flows at Bald Mountain Pass. 1.81 inches of
            total rain fell at the nearby Bald Mountain
            Pass UDOT RWIS sensor, with 1.59 inches of
            rain falling in an hour. Time approximate.

&&

AD

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

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

0127 PM     Flash Flood      4 SSE Marysvale         38.39N 112.23W
07/17/2026                   Piute              UT   Dept of Highways

            UDOT traffic reported debris on roadway on
            US-89 at milepost 175, road closed in both
            directions.

&&

DEC

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

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

0800 PM     Flash Flood      3 SSE Pine Vly          37.38N 113.48W
07/16/2026                   Washington         UT   Other Federal

            The USGS stream gauge on the Santa Clara
            river recorded a flood wave with flows that
            increased from approximately 4 cfs to 240
            cfs in about 1 hour. Time is coincident with
            observed peak flow.

&&

AD

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

WYZ021-172145-
Southwest Wyoming WY-
252 PM MDT Fri Jul 17 2026

...A strong thunderstorm will impact portions of northwestern Uinta
County through 345 PM MDT
...

At 252 PM MDT, Doppler radar was tracking a strong thunderstorm 14
miles northeast of Evanston, moving northwest at 10 mph.

HAZARD...Half inch hail.

SOURCE...Radar indicated.

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

This storm will remain over mainly rural areas of northwestern Uinta
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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4142 11070 4136 11080 4149 11104 4159 11085
      4158 11073
TIME...MOT...LOC 2052Z 144DEG 7KT 4143 11079

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

JCW

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