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Excessive Heat Warning — Glen Canyon Recreation Area/Lake Powell, UT, Eastern Juab/Millard Counties, UT, Sanpete Valley, UT, Sevier Valley, UT, Castle Country, UT, Great Salt Lake Desert and Mountains, UT, Tooele and Rush Valleys, UT, Western Uinta Basin, UT, Eastern Box Elder County, UT, Northern Wasatch Front, UT, Salt Lake Valley, UT, Utah Valley, UT, Cache Valley/Utah Portion, UT, Zion National Park, UT, South Central Utah, UT, Western Canyonlands, UT
Issued
Expires
1:00 AM CDT · Tue, Jul 28 2026
Issuing Office
NWS KSLC

Affected Areas

Glen Canyon Recreation Area/Lake Powell, UT Eastern Juab/Millard Counties, UT Sanpete Valley, UT Sevier Valley, UT Castle Country, UT Great Salt Lake Desert and Mountains, UT Tooele and Rush Valleys, UT Western Uinta Basin, UT Eastern Box Elder County, UT Northern Wasatch Front, UT Salt Lake Valley, UT Utah Valley, UT Cache Valley/Utah Portion, UT Zion National Park, UT South Central Utah, UT Western Canyonlands, UT

Official Bulletin

297
WWUS75 KSLC 261727
NPWSLC

URGENT - WEATHER MESSAGE
National Weather Service Salt Lake City UT
1127 AM MDT Sun Jul 26 2026

UTZ131-270830-
/O.CON.KSLC.XH.W.0002.000000T0000Z-260728T0600Z/
Glen Canyon Recreation Area/Lake Powell-
Including the following locations - Big Water and Bullfrog
1127 AM MDT Sun Jul 26 2026

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT MONDAY
NIGHT...

* WHAT...Dangerously hot conditions with high temperatures in the
  mid to upper 100s expected. Low temperatures around 80 degrees
  will provide little relief from the heat. HeatRisk will be in the
  purple (extreme) range to the red (major) range through the
  weekend.

* WHERE...Glen Canyon Recreation Area/Lake Powell.

* WHEN...Until midnight MDT Monday Night.

* 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.

Stay cool, stay hydrated, stay informed.

&&

$$

UTZ116-118>120-270830-
/O.EXB.KSLC.HT.Y.0004.260726T1800Z-260727T1200Z/
Eastern Juab/Millard Counties-Sanpete Valley-Sevier Valley-Castle
Country-
Including the following locations - Emery, Fillmore, Richfield,
Salina, Nephi, Mt Pleasant, Manti, Price, Castle Dale, Ephraim,
and Scipio
1127 AM MDT Sun Jul 26 2026

...HEAT ADVISORY IN EFFECT UNTIL 6 AM MDT MONDAY...

* WHAT...Daytime high temperatures up to 100 expected alongside
  overnight low temperatures only down to 70 to 75 degrees by 7AM,
  especially for the Castle County area and areas along I-15 near
  Fillmore.

* WHERE...Castle Country, Eastern Juab/Millard Counties, Sanpete
  Valley, and Sevier Valley.

* WHEN...Until 6 AM MDT Monday.

* 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.

&&

$$

UTZ101-102-114-270830-
/O.CON.KSLC.HT.Y.0004.000000T0000Z-260728T0600Z/
Great Salt Lake Desert and Mountains-Tooele and Rush Valleys-
Western Uinta Basin-
Including the following locations - Vernon, Roosevelt, Tooele,
Grantsville, Park Valley, Duchesne, Dugway, and Wendover
1127 AM MDT Sun Jul 26 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT MONDAY NIGHT...

* WHAT...High temperatures up to the lower 100s for northwest Utah
  and Tooele Valley with low temperatures in the mid 70s providing
  little overnight relief. High temperatures in the upper 90s for
  the Uinta Basin with low temperatures in the upper 60s. HeatRisk
  will be in the red (major) range through the weekend.

* WHERE...Great Salt Lake Desert and Mountains, Tooele and Rush
  Valleys, and Western Uinta Basin.

* WHEN...Until midnight MDT Monday Night.

* 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.

&&

$$

UTZ103>106-270830-
/O.CON.KSLC.HT.Y.0004.000000T0000Z-260728T0600Z/
Eastern Box Elder County-Northern Wasatch Front-Salt Lake Valley-
Utah Valley-
Including the following locations - Bountiful, West Jordan,
Provo, Payson, Snowville, Lehi, Brigham City, Ogden, Sandy, and
Salt Lake City
1127 AM MDT Sun Jul 26 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT MONDAY NIGHT...

* WHAT...High temperatures up to the lower 100s. Low temperatures in
  the mid to upper 70s will provide little relief overnight.
  HeatRisk will be in the red (major) range through the weekend.

* WHERE...The Wasatch Front.

* WHEN...Until midnight MDT Monday Night.

* 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.

If you do not have air conditioning in your home or lack shelter,
you can call 211 or visit 211utah.org for assistance locating
appropriate shelter from the heat.

&&

$$

UTZ107-270830-
/O.CON.KSLC.HT.Y.0004.000000T0000Z-260728T0600Z/
Cache Valley/Utah Portion-
Including the following locations - Logan and Smithfield
1127 AM MDT Sun Jul 26 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT MONDAY NIGHT...

* WHAT...High temperatures of up to 100 degrees, with low
  temperatures in the lower to mid 70s providing little relief
  overnight. HeatRisk will be in the red (major) range through the
  weekend.

* WHERE...Cache Valley/Utah Portion.

* WHEN...Until midnight MDT Monday Night.

* 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.

If you do not have air conditioning in your home or lack shelter,
you can call 211 or visit 211utah.org for assistance locating
appropriate shelter from the heat.

&&

$$

UTZ124-128-130-270830-
/O.CON.KSLC.HT.Y.0004.000000T0000Z-260728T0600Z/
Zion National Park-South Central Utah-Western Canyonlands-
Including the following locations - Springdale, Kanab, Escalante,
and Hanksville
1127 AM MDT Sun Jul 26 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT MONDAY NIGHT...

* WHAT...High temperatures in the lower 100s for south central Utah
  and western Canyonlands. High temperatures in the upper 100s for
  Zion National Park. Low temperatures in the lower to mid 70s will
  provide little relief from the heat. HeatRisk will be in the red
  (major) range through the weekend.

* WHERE...South Central Utah, Western Canyonlands, and Zion National
  Park.

* WHEN...Until midnight MDT Monday Night.

* 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.

&&

$$

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