Flash Flood Warning 22, NWS Salt Lake City, UT

535 
WGUS75 KSLC 172329
FFSSLC

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

UTC031-180045-
/O.CON.KSLC.FF.W.0022.000000T0000Z-260718T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Piute UT-
529 PM MDT Fri Jul 17 2026

...FLASH FLOOD WARNING FOR THE SILVER KING BURN SCAR REMAINS IN 
EFFECT UNTIL 645 PM MDT THIS EVENING FOR NORTHWESTERN PIUTE COUNTY...

At 529 PM MDT, Piute County Emergency Management reported Flash 
Flooding and debris flows in upper Bullion Canyon with flood waters 
moving downstream Bullion Creek towards Marysvale. Between 0.5 and 
0.6 inches of rain have fallen from earlier thunderstorms. Flash 
flooding is already occurring.

Excessive rainfall over the burn scar will result in debris flow 
moving through the Bullion Canyon. 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 Silver King Burn
         Scar...specifically Bullion Canyon

SOURCE...Law enforcement reported.

IMPACT...Life threatening flash flooding of areas in and around
         the Silver King Burn Scar...specifically Bullion Canyon

Some locations that will experience flash flooding include...
  Miner's Park to Fireman's Park...Marysvale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a life threatening situation. Heavy rainfall will cause 
extensive and severe flash flooding of creeks...streams...and 
ditches in Bullion Canyon within the Silver King Burn Scar. Severe 
debris flows can also be anticipated across roads above Fireman's 
Park. 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.

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

&&

LAT...LON 3841 11227 3839 11234 3843 11236 3846 11223
      3845 11222

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

$$

GM

304 
WGUS75 KSLC 180011
FFSSLC

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

UTC031-180045-
/O.CON.KSLC.FF.W.0022.000000T0000Z-260718T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Piute UT-
611 PM MDT Fri Jul 17 2026

...FLASH FLOOD WARNING FOR THE SILVER KING BURN SCAR REMAINS IN 
EFFECT UNTIL 645 PM MDT THIS EVENING FOR NORTHWESTERN PIUTE COUNTY...

At 611 PM MDT, Piute County Emergency Management reported Flash 
Flooding and debris flows in upper Bullion Canyon. Flash flooding 
continued downstream Bullion Creek but has remained below bridges at 
HW 89. Between 0.5 and 0.6 inches of rain have fallen from earlier 
thunderstorms. Flash flooding is already occurring.

Excessive rainfall over the burn scar will result in debris flow 
moving through the Bullion Canyon. 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 Silver King Burn
         Scar...specifically Bullion Canyon

SOURCE...Law enforcement reported.

IMPACT...Life threatening flash flooding of areas in and around
         the Silver King Burn Scar...specifically Bullion Canyon

Some locations that will experience flash flooding include...
  Miner's Park to Fireman's Park...Marysvale.

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 Silver King 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 to higher ground now. Act quickly to protect your life.

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

&&

LAT...LON 3841 11227 3839 11234 3843 11236 3846 11223
      3845 11222

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

$$

GM

204 
WGUS75 KSLC 180044
FFSSLC

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

UTC031-180054-
/O.EXP.KSLC.FF.W.0022.000000T0000Z-260718T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Piute UT-
644 PM MDT Fri Jul 17 2026

...FLASH FLOOD WARNING FOR THE SILVER KING BURN SCAR WILL EXPIRE AT 
645 PM MDT THIS EVENING FOR NORTHWESTERN PIUTE COUNTY...

Flood waters continue to recede in Bullion Creek. 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 3841 11227 3839 11234 3843 11236 3846 11223
      3845 11222

$$

GM

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
1025 AM MDT Fri Jul 17 2026

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

0500 PM     Flash Flood      19 W Big Water          37.07N 112.00W
07/15/2026                   Kane               UT   Public

            Backcountry guide reported that Buckskin
            Gulch flashed at House Rock Valley Road and
            downstream to Buckskin Trailhead.

&&

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