Flash Flood Warning 20, NWS Salt Lake City, UT

825 
WGUS75 KSLC 272230
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
430 PM MDT Thu Jun 27 2024

UTC025-272345-
/O.CON.KSLC.FF.W.0020.000000T0000Z-240627T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane UT-
430 PM MDT Thu Jun 27 2024

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MDT THIS 
AFTERNOON FOR SOUTH CENTRAL KANE COUNTY...

At 430 PM MDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 0.5 and 1 inch of rain has 
fallen near Blue Pool Wash and Big Water. 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...
  Buckskin Gulch, The Wave, the Lower Paria River, Big Water, Blue 
  Pool Wash.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

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

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 3723 11171 3721 11155 3713 11148 3704 11143
      3700 11141 3700 11147 3700 11157 3700 11162
      3700 11163 3700 11200 3700 11203 3700 11209
      3717 11195

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

$$

ND

661 
WGUS75 KSLC 272343
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
543 PM MDT Thu Jun 27 2024

UTC025-272353-
/O.EXP.KSLC.FF.W.0020.000000T0000Z-240627T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane UT-
543 PM MDT Thu Jun 27 2024

...FLASH FLOOD WARNING WILL EXPIRE AT 545 PM MDT THIS AFTERNOON FOR 
SOUTH CENTRAL KANE COUNTY...

Flood waters have receded. A few thunderstorms may continue to 
produce heavy rain over the next hour or two. Please continue to 
heed remaining road closures.

&&

LAT...LON 3723 11171 3721 11155 3713 11148 3704 11143
      3700 11141 3700 11147 3700 11157 3700 11162
      3700 11163 3700 11200 3700 11203 3700 11209
      3717 11195

$$

ND

Area Forecast Discussion
National Weather Service Salt Lake City UT
419 AM MDT Thu Jun 27 2024

.SYNOPSIS...A trough will graze northern Utah through early
Friday, bringing the potential for strong thunderstorms over
eastern Utah and less warm temperatures for northern Utah. Dry
conditions will return Friday through the weekend with warming
temperatures and increasing winds, bringing the potential for
critical fire weather conditions.

&&

.SHORT TERM (Through 12Z/6AM Saturday)...A Pacific Northwest
trough is making its way into Idaho this morning, with this system
moving into the central United States by Friday. As it continues
its eastward trek, it will graze northern Utah during the day into
early tomorrow. A switch to westerly flow will bring drying to
western portions of the area today as deeper moisture remains in
place over eastern Utah. The position of the trough and
positioning of the associated jet will increase instability,
promoting the development of thunderstorms, and also increase
shear, with the HRRR indicating 25-35kts of shear widespread over
the forecast area by the afternoon. The cold front associated with
the passing trough is expected to move into central Utah by the
early evening, with this boundary acting as a potential focus for
convection for areas along and north of it that have not yet
experienced drying. These conditions look to be ripe for the
development of strong to severe thunderstorms this afternoon,
primarily for areas east of I-15, with gusty winds being the
primary threat. With the deep moisture in place, the potential for
heavy rain remains. Despite increased steering flow, will still
see the potential for flash flooding, especially for burn scars in
eastern Utah and the southeast Utah national parks.

Drying will spread across the area by Friday with the exit of the
trough and the building of high pressure over the area. Minimum RH
values in the 10-15% range are anticipated by the afternoon over
southwest Utah, with winds remaining elevated. Thus, the valleys
of southern Utah should see at least isolated critical fire
weather conditions, though winds look marginal for a more
widespread event.

.LONG TERM (After 12Z/6AM Saturday)...A period of shortwave ridging
across the region on Saturday and Sunday will result in clear, dry,
and hot conditions. Temperatures Saturday and Sunday will be the
hottest temperatures throughout the long term period with highs in
the mid to upper 90s across most valleys and 100-105 across far
southern Utah.

A trough will be approaching from the PNW on Sunday. Ahead of the
trough, southwesterly flow aloft will increase. Daytime heating will
create a well mixed boundary layer that will result in gusty
southwesterly winds 25-35 mph for much of the CWA. RH 10-15% Sunday
afternoon will bring an increased risk of fire weather for the
western half of the CWA. High pressure centered over Texas will
advect higher moisture content towards the four corners that will
result in an RH gradient from west to east with RH values closer to
20% across the eastern half of the CWA. Given the higher moisture
content further east and weak ascent ahead of the approaching
trough, some isolated diurnal convection is possible in the eastern
portion of the CWA. Inverted V sounding profiles suggest that any
storms that do develop will be high based with the potential for
microbursts.

By Monday afternoon the axis of the trough will be moving through
Utah. Winds will once again increase during the afternoon with
widespread gusts 25-30 mph. Additionally, more isolated storms are
possible across the eastern portion of the region with another
microburst threat. Across northern and central Utah cooler air will
move in and allow highs to remain near or slightly above normal
through the remainder of the period as the jet stream resides nearby
keeping a gradient of cooler air aloft close enough to prevent
temperatures from climbing too much during the day. Temperatures
stay a few degrees hotter than normal across southern Utah.
Northwest flow aloft will keep dry air in place throughout most of
next week which will aid in more efficient nighttime cooling with
lows getting below 70 for areas outside of far southern Utah.

&&

.AVIATION...KSLC...VFR conditions will persist for KSLC terminal
through the period. Early morning showers near and south of the
terminal will create gusty southerly outflow winds at times, but
these will dissipate through the morning. Afternoon convection will
mostly stay south of the terminal, but there remains a 40% chance of
a strong to severe thunderstorm impacting the terminal with high
cloud tops, gusty winds, hail, heavy rain.

.REST OF UTAH AND SOUTHWEST WYOMING...VFR conditions will persist
for the airspace. Showery activity in the morning will dissipate and
give way to widespread afternoon convection for the southern two
thirds of the airspace. These storms have the potential to be severe
with high cloud tops, gusty outflow winds, hail, frequent lightning
and heavy downpours.

&&

.FIRE WEATHER...As a Pacific Northwest trough grazes northern Utah
through early Friday, drier air will move in from west to east.
Significant moisture will remain in place over eastern Utah today
and will combine with heightened instability in associated with
the trough to result in scattered to numerous showers and
thunderstorms, with many capable of producing strong, gusty winds
this afternoon into the early evening. The potential for heavy
rain will also exist. The drying will continue in earnest late
Thursday into Friday, eliminating the threat of convection but as
winds increase, particularly through the weekend, this will bring
the potential for critical fire weather conditions. Another trough
moving by is expected to increase moisture over the area for the
beginning of the work week.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...None.
WY...None.
&&

SHORT TERM/FIRE WEATHER...Traphagan
LONG TERM/AVIATION...Mahan

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

Special Weather Statement
National Weather Service Salt Lake City UT
138 PM MDT Thu Jun 27 2024

UTZ117-125-126-272015-
Upper Sevier River Valleys UT-Southern Mountains UT-
Central Mountains UT-
138 PM MDT Thu Jun 27 2024

...A strong thunderstorm will impact portions of northeastern Piute,
northwestern Wayne and south central Sevier Counties through 215 PM
MDT
...

At 138 PM MDT, Doppler radar was tracking a strong thunderstorm 10
miles east of Marysvale, or 15 miles northeast of Junction, moving
east at 20 mph.

HAZARD...Wind gusts up to 50 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...
Koosharem and Greenwich.

This includes Utah Route 24 between mile markers 32 and 45.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
central and southern Utah.

&&

LAT...LON 3834 11212 3849 11214 3859 11178 3833 11171
TIME...MOT...LOC 1938Z 259DEG 19KT 3842 11207

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

STW

Special Weather Statement
National Weather Service Salt Lake City UT
141 PM MDT Thu Jun 27 2024

UTZ113-120-272015-
Wasatch Plateau/Book Cliffs UT-Castle Country UT-
141 PM MDT Thu Jun 27 2024

...A strong thunderstorm will impact portions of central Carbon
County through 215 PM MDT
...

At 141 PM MDT, Doppler radar was tracking a strong thunderstorm 8
miles northeast of Wellington, or 9 miles east of Price, moving east
at 20 mph.

HAZARD...Wind gusts up to 50 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...
Wellington, Sunnyside, and East Carbon.

This includes US Route 6 between mile markers 249 and 255.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
central and northern Utah.

&&

LAT...LON 3953 11070 3968 11072 3981 11032 3954 11020
TIME...MOT...LOC 1941Z 259DEG 19KT 3962 11062

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

STW

Preliminary Local Storm Report
National Weather Service Salt Lake City UT
152 PM MDT Thu Jun 27 2024

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

0151 PM     Flash Flood      1 E Capitol Reef Np     38.28N 111.18W
06/27/2024                   Wayne              UT   Dept of Highways

            Water over the road on SR-24 in Capitol Reef
            NP. Reported from UDOT.

&&

Preliminary Local Storm Report
National Weather Service Salt Lake City UT
154 PM MDT Thu Jun 27 2024

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

0154 PM     Flash Flood      8 ENE Fremont Jct       38.80N 111.27W
06/27/2024                   Emery              UT   Dept of Highways

            Flooding reported by UDOT on I-70 between
            MM96-103.

&&

Special Weather Statement
National Weather Service Salt Lake City UT
211 PM MDT Thu Jun 27 2024

UTZ125-128-272100-
South Central Utah UT-Southern Mountains UT-
211 PM MDT Thu Jun 27 2024

...A strong thunderstorm will impact portions of southwestern Kane
County through 300 PM MDT
...

At 210 PM MDT, Doppler radar was tracking a strong thunderstorm 14
miles north of Kanab, moving east at 20 mph. An additional cluster
of storms is located from east of Kanab onward along the state
border with similar storm motion.

HAZARD...Wind gusts up to 50 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...
Kanab, Stateline CG, and The Wave.

This includes US Route 89 near mile marker 26, and between mile
markers 32 and 64.

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.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
southern Utah.

&&

LAT...LON 3732 11252 3740 11214 3700 11189 3700 11253
TIME...MOT...LOC 2010Z 256DEG 19KT 3723 11246

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

STW

Special Weather Statement
National Weather Service Salt Lake City UT
213 PM MDT Thu Jun 27 2024

UTZ113-120-121-272100-
San Rafael Swell UT-Wasatch Plateau/Book Cliffs UT-Castle Country UT-
213 PM MDT Thu Jun 27 2024

...A strong thunderstorm will impact portions of north central Emery
and central Carbon Counties through 300 PM MDT
...

At 213 PM MDT, Doppler radar was tracking a strong thunderstorm near
Wellington, or 8 miles southeast of Price, moving northeast at 35
mph.

HAZARD...Wind gusts up to 50 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...
Wellington, Sunnyside, and East Carbon.

This includes the following highways...
 US Route 6 between mile markers 243 and 266.
 Utah Route 10 between mile markers 59 and 66.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
central Utah.

&&

LAT...LON 3935 11077 3952 11090 3978 11046 3949 11015
TIME...MOT...LOC 2013Z 236DEG 30KT 3948 11074

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

Church