Flash Flood Warning 60, NWS Salt Lake City, UT

403 
WGUS75 KSLC 291939
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
139 PM MDT Wed Jul 29 2026

UTC021-025-053-292115-
/O.CON.KSLC.FF.W.0060.000000T0000Z-260729T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Iron UT-Kane UT-Washington UT-
139 PM MDT Wed Jul 29 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 PM MDT THIS 
AFTERNOON FOR SOUTHEASTERN IRON, WEST CENTRAL KANE AND EAST CENTRAL 
WASHINGTON COUNTIES...

At 139 PM MDT, Zion National Park officials reported flash flooding 
in most slot canyons from thunderstorms producing heavy rain across 
the park. Between 0.25 and 1 inch of rain has fallen, with the 
highest amounts on the west side of the park, including over Kolob 
Canyon. Additional rainfall amounts up to 0.15 inches are possible 
in the warned area. Flash flooding is already occurring.

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

SOURCE...Emergency management reported.

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

Some locations that will experience flash flooding include...
  Zion National Park, Springdale and Kolob 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 3741 11303 3743 11281 3714 11269 3713 11296
      3733 11310 3737 11321 3746 11327 3749 11318

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

$$

JAC

271 
WGUS75 KSLC 292111
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
311 PM MDT Wed Jul 29 2026

UTC021-025-053-292121-
/O.EXP.KSLC.FF.W.0060.000000T0000Z-260729T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Iron UT-Kane UT-Washington UT-
311 PM MDT Wed Jul 29 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 315 PM MDT THIS AFTERNOON FOR 
SOUTHEASTERN IRON, WEST CENTRAL KANE AND EAST CENTRAL WASHINGTON 
COUNTIES...

The heavy rain has ended. Please continue to heed remaining road 
closures.

&&

LAT...LON 3741 11303 3743 11281 3714 11269 3713 11296
      3733 11310 3737 11321 3746 11327 3749 11318

$$

JAC

Area Forecast Discussion
National Weather Service Salt Lake City UT
608 AM MDT Wed Jul 29 2026

.KEY MESSAGES, Issued 1009 PM MDT Tue Jul 28 2026...

- Monsoon moisture will increase and spread northward for
  Wednesday, bringing a heightened threat of flash flooding,
  before building high pressure brings a drying trend Thursday
  through the weekend.

- There is a high chance that temperatures will become extremely
  hot by the weekend as the ridge continues to build, bring the
  potential for an increase in heat related illness.

&&

.DISCUSSION, Issued 1009 PM MDT Tue Jul 28 2026...
A broad ridge is centered over the central United
States this evening, allowing for a southerly flow to develop over
Utah and southwest Wyoming. The airmass over the area has remained
relatively moist, with satellite derived PW values in the 0.8 to
1.0 range across much of the area, highest over southern Utah.
Earlier showers and storms over southern Utah are decreasing in
coverage at this time. However, a series of weak shortwaves moving
north across Utah overnight will allow for some showers to
continue into the morning.

The southerly flow will allow moisture over the area to increase
and spread northward through tomorrow afternoon, with PW values of
an inch or more expected to spread over the vast majority of the
forecast area. Combined with the supplemental instability from the
shortwaves, this will bring another round of showers and
thunderstorms, and any storms that develop will be capable of
producing heavy rain that could lead to flash flooding. The
showers and associated cloud cover area expected to keep high
temperatures near to just below seasonal normals during the day.

Beginning Thursday, the broad ridge is expected to re-orient
itself over the west, with the center moving directly over Utah
for the weekend. This will add a westerly component to the flow
aloft that will draw a drier airmass into the area, decreasing the
threat of convection. As the ridge strengthens, temperatures will
become increasingly hot, peaking on Saturday with 700mb
temperatures expected to be in the lower 20s Celsius across the
entire area. This will result very hot temperatures that will
increase the risk of heat related illness, particularly for valley
locations. Some uncertainty remains with regard to how high the
HeatRisk will get on Friday, with Thursday nights lows potentially
getting low enough to keep the HeatRisk in the orange (moderate)
range for much of northern Utah during the day. For Saturday and
Sunday, confidence is higher than usual in the potential for very
hot maximum temperatures, but there remains a good amount of
spread in the ensembles with regard to low temperatures and
therefore how much overnight relief the area, northern Utah
in particular, will see. Therefore, have decided to hold off on
an Extreme Heat Watch at this time due to uncertainty about the
length of time of the event.

By early next week, the ridge is expected to weaken a bit and
shift south as a Pacific Northwest trough moves over the top of
it. This would provide some relief from the heat, at least for
northern portions of the area, though there remains a good amount
of spread in the guidance with regard to how much the trough will
act to weaken the ridge and therefore how much of a drop in
temperatures there might be. It does seem likely, however, that
the very hot weather will continue for at least southeast Utah.

&&

.AVIATION...
KSLC...There is a 30% chance for showers to impact the terminal with
variable winds between 12-15z. Otherwise, showers continue along the
high terrain east of the terminal through the evening. Showers and
thunderstorms moving in from the west after 00z have a 30% chance to
bring gusty and erratic outflow winds to 40-45 kts through around
04z. VIS reductions are also possible with storms this evening, with
potential to result in brief MVFR conditions. Convective activity
tapers thereafter, with generally light southeasterly winds
prevailing overnight.

REST OF UTAH AND SOUTHWEST WYOMING...Showers across central Utah
will continue spreading northeast through early this afternoon.
Additional development of showers and thunderstorms are expected
across southern Utah this afternoon and evening, moving into
northern Utah and southwest Wyoming later in the evening. Storms
today will be capable of producing gusty and erratic outflow winds
to 45 kts as well as brief heavy rainfall that could produce brief
VIS reductions to MVFR. Conditions quickly dry out areawide after
06z, with generally light terrain driven winds prevailing overnight.

&&

.FIRE WEATHER, Issued 214 AM MDT Wed Jul 29 2026...
Scattered showers and thunderstorms are expected to
develop early this morning across central Utah, spreading
northward through late morning. Another round of showers and
thunderstorms develops early this afternoon across southern Utah,
with coverage becoming more widespread across the state through
the remainder of the afternoon. Expect activity to taper off late
tonight. Storms today will be capable of producing locally heavy
rainfall, lightning, and gusty and erratic outflow winds upwards
of 40 to 50 mph. Monsoonal moisture is flushed out of the state
quickly on Thursday as high pressure strengthens across the
western US, introducing a much drier airmass through at least
early next week. This pattern will also result in temperatures
trending 5 to 10 degrees warmer this weekend. Given the
combination of unseasonable heat and relative humidity values
reaching critical values statewide by Friday, heightened fire
weather concerns will exist through the weekend especially across
the western half of the state.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Extreme Heat Watch from Friday afternoon through Sunday evening
     for UTZ123-124-128-131.

WY...None.
&&

PUBLIC...Traphagan
AVIATION...Whitlam
FIRE WEATHER...Whitlam

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

Special Weather Statement
National Weather Service Salt Lake City UT
1157 AM MDT Wed Jul 29 2026

UTZ122>125-291845-
Southwest Utah UT-Southern Mountains UT-Zion National Park UT-
Lower Washington County UT-
1157 AM MDT Wed Jul 29 2026

...A strong thunderstorm will impact portions of northeastern
Washington and south central Iron Counties through 1245 PM MDT
...

At 1156 AM MDT, Doppler radar was tracking a strong thunderstorm near
New Harmony, or 14 miles northwest of Zion National Park, moving
northeast at 30 mph.

HAZARD...Wind gusts of 50 to 55 mph and penny 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...
Cedar City, Zion National Park, Enoch, New Harmony, Kanarraville,
Hamilton Fort, Pintura, and Kolob Canyon.

This includes the following highways...
 Interstate 15 between mile markers 29 and 66.
 Utah Route 56 between mile markers 44 and 61.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3726 11315 3733 11347 3780 11328 3778 11303
      3771 11290
TIME...MOT...LOC 1756Z 202DEG 24KT 3740 11325

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH

Church