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Extreme Heat Warning — Lower Washington County, UT, Zion National Park, UT, South Central Utah, UT, Capitol Reef National Park and Vicinity, UT, Western Canyonlands, UT, Glen Canyon Recreation Area/Lake Powell, UT
Issued
1:00 PM CDT · Fri, Jul 31 2026
Expires
10:00 PM CDT · Sun, Aug 2 2026
Issuing Office
NWS KSLC

Affected Areas

Lower Washington County, UT Zion National Park, UT South Central Utah, UT Capitol Reef National Park and Vicinity, UT Western Canyonlands, UT Glen Canyon Recreation Area/Lake Powell, UT

Official Bulletin

703
WWUS75 KSLC 291817
NPWSLC

URGENT - WEATHER MESSAGE
National Weather Service Salt Lake City UT
1217 PM MDT Wed Jul 29 2026

UTZ123-124-128>131-300930-
/O.CON.KSLC.XH.W.0003.260731T1800Z-260803T0300Z/
Lower Washington County-Zion National Park-South Central Utah-
Capitol Reef National Park and Vicinity-Western Canyonlands-Glen
Canyon Recreation Area/Lake Powell-
Including the following locations - Kanab, Springdale, Ivins,
Loa, Big Water, Torrey, Escalante, St George, Hurricane,
Hanksville, and Bullfrog
1217 PM MDT Wed Jul 29 2026

...EXTREME HEAT WARNING REMAINS IN EFFECT FROM NOON FRIDAY TO 9 PM
MDT SUNDAY...

* WHAT...Dangerously hot conditions with temperatures up to 107
  expected. Warm overnight lows in the upper 60s to low 70s will
  offer little relief.

* WHERE...Capitol Reef National Park and Vicinity, Glen Canyon
  Recreation Area/Lake Powell, South Central Utah, Western
  Canyonlands, Lower Washington County, and Zion National Park.

* WHEN...From noon Friday to 9 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

&&

$$

UTZ115-122-300930-
/O.EXA.KSLC.HT.Y.0005.260801T1800Z-260803T0300Z/
Western Millard and Juab Counties-Southwest Utah-
Including the following locations - Delta, Beaver, Cedar City,
Milford, and Little Sahara
1217 PM MDT Wed Jul 29 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 9 PM MDT SUNDAY...

* WHAT...Temperatures up to 105 expected. Overnight temperatures are
  expected to recover into the mid- to upper-60s, providing
  temporary relief from daytime heat.

* WHERE...Western Millard and Juab Counties and Southwest Utah.

* WHEN...From noon Saturday to 9 PM MDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

&&

$$

UTZ101-116-120-121-300930-
/O.CON.KSLC.HT.Y.0005.260801T1800Z-260803T0300Z/
Great Salt Lake Desert and Mountains-Eastern Juab/Millard
Counties-Castle Country-San Rafael Swell-
Including the following locations - Nephi, Goblin Valley, Green
River, Castle Dale, Scipio, Price, Wendover, Park Valley,
Fillmore, Dugway, and Emery
1217 PM MDT Wed Jul 29 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM NOON SATURDAY TO 9 PM MDT
SUNDAY...

* WHAT...Temperatures up to 106 expected, with warm overnight lows
  in the upper 60s to low 70s offering little relief.

* WHERE...Castle Country, Eastern Juab/Millard Counties, San Rafael
  Swell, and Great Salt Lake Desert and Mountains.

* WHEN...From noon Saturday to 9 PM MDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

&&

$$

UTZ102-104>106-114-300930-
/O.CON.KSLC.XH.A.0004.260801T1800Z-260803T0300Z/
Tooele and Rush Valleys-Northern Wasatch Front-Salt Lake Valley-
Utah Valley-Western Uinta Basin-
Including the following locations - Bountiful, Lehi, Salt Lake
City, Payson, Duchesne, Provo, Grantsville, West Jordan, Vernon,
Sandy, Roosevelt, Ogden, and Tooele
1217 PM MDT Wed Jul 29 2026

...EXTREME HEAT WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SUNDAY EVENING...

* WHAT...Dangerously hot conditions with temperatures up to 105
  possible and overnight lows in the low to mid-70s.

* WHERE...Northern Wasatch Front, Salt Lake Valley, Tooele and Rush
  Valleys, Utah Valley, and Western Uinta Basin.

* WHEN...From Saturday afternoon through Sunday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Monitor the latest forecasts and warnings for updates.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/saltlakecity.

For information on potential travel impacts visit
http://udottraffic.utah.gov

Webber