Extreme Heat WarningURGENT - WEATHER MESSAGE
National Weather Service Riverton WY
1110 AM MDT Sun Jul 12 2026
WYZ003>006-010-011-013-016>020-023-025>030-131300-
/O.EXT.KRIW.XH.W.0001.000000T0000Z-260715T0300Z/
Cody Foothills-North Bighorn Basin-Southwest Bighorn Basin-
Southeast Bighorn Basin-Northeast Johnson County-Southeast
Johnson County-Jackson Hole-Upper Wind River Basin-Wind River
Basin-Lander Foothills-Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Star Valley-Upper Green River
Basin Foothills-Upper Green River Basin-South Lincoln County-Rock
Springs and Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Buffalo, Shoshoni, Farson, Shell, Thayne,
Jackson, Cokeville, Clark, Dubois, Star Valley Ranch, Ten Sleep,
Riverton, La Barge, Alpine, Greybull, Worland, Afton, Powell, Rock
Springs, Cody, Green River, Jeffrey City, Kemmerer, Kaycee, Pinedale,
Casper, Lander, Lovell, Meeteetse, Big Piney, Wamsutter, Basin, and
Thermopolis
1110 AM MDT Sun Jul 12 2026
...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 9 PM MDT TUESDAY...
* WHAT...Dangerously hot conditions with temperatures from 100 to 110
degrees below 6,000 feet and 90 to 100 degrees between 6,000 and
7,000 feet each day.
* WHERE...Portions of central, north central, northwest, south
central, southwest, and west central Wyoming.
* WHEN...Until 9 PM MDT Tuesday.
* 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.
&&
$$
LoweURGENT - WEATHER MESSAGE
National Weather Service Salt Lake City UT
1049 AM MDT Sun Jul 12 2026
UTZ101>108-114-116-118>121-130800-
/O.CON.KSLC.XH.W.0001.000000T0000Z-260714T1200Z/
Great Salt Lake Desert and Mountains-Tooele and Rush Valleys-
Eastern Box Elder County-Northern Wasatch Front-Salt Lake Valley-
Utah Valley-Cache Valley/Utah Portion-Wasatch Back-Western Uinta
Basin-Eastern Juab/Millard Counties-Sanpete Valley-Sevier Valley-
Castle Country-San Rafael Swell-
Including the following locations - Tooele, Payson, Nephi,
Fillmore, Park City, Mt Pleasant, Emery, Logan, Price, Wendover,
Roosevelt, Salt Lake City, Ogden, Smithfield, Castle Dale, Goblin
Valley, Lehi, Grantsville, Sandy, Duchesne, Dugway, Salina,
Bountiful, Richfield, Heber City, Ephraim, Huntsville, Manti,
Provo, Green River, West Jordan, Vernon, Park Valley, Snowville,
Brigham City, and Scipio
1049 AM MDT Sun Jul 12 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 6 AM MDT TUESDAY...
* WHAT...Dangerously hot conditions with temperatures up to 107
possible for the valleys of northern Utah, including the Wasatch
Front and Cache Valley. Highs around 100 possible for the mountain
valleys of northern and central Utah, including the Wasatch Back,
along Castle Country, the Uinta Basin, and the San Rafael Swell.
* WHERE...Portions of central and northern Utah.
* WHEN...Until 6 AM MDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...There is high confidence that temperatures
will warm to values challenging daily, monthly, or even all-time
high temperature records Sunday through Monday. Overnight lows in
the lower to mid 70s for many valley locations will provide little
in the way of overnight relief.
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.
&&
$$URGENT - WEATHER MESSAGE
National Weather Service Salt Lake City UT
1049 AM MDT Sun Jul 12 2026
UTZ115-122-128>131-130800-
/O.CON.KSLC.XH.W.0001.000000T0000Z-260713T1200Z/
Western Millard and Juab Counties-Southwest Utah-South Central
Utah-Capitol Reef National Park and Vicinity-Western Canyonlands-
Glen Canyon Recreation Area/Lake Powell-
Including the following locations - Cedar City, Milford,
Hanksville, Escalante, Kanab, Loa, Beaver, Bullfrog, Torrey,
Little Sahara, Delta, and Big Water
1049 AM MDT Sun Jul 12 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 6 AM MDT MONDAY...
* WHAT...Dangerously hot conditions expected, with highs around 100
possible for most central and southern Utah valleys and up to 110
for Lower Washington County, Zion Canyon, and the Glen Canyon
Recreation Area.
* WHERE...Western Millard and Juab Counties, Capitol Reef National
Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South
Central Utah, Western Canyonlands, and Southwest Utah.
* WHEN...Until 6 AM MDT Monday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...There is high confidence that temperatures
will warm to values challenging daily and monthly high temperature
records Sunday. Overnight lows in the lower to mid 70s for many
valley locations, except low 80s for lower Washington County, will
provide little in the way of overnight relief.
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.
&&
$$URGENT - WEATHER MESSAGE
National Weather Service Salt Lake City UT
1049 AM MDT Sun Jul 12 2026
WYZ021-130800-
/O.CON.KSLC.XH.W.0001.000000T0000Z-260714T0300Z/
Southwest Wyoming-
Including the following locations - Lyman and Evanston
1049 AM MDT Sun Jul 12 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY...
* WHAT...Dangerously hot conditions with temperatures up to 98
degrees expected.
* WHERE...Southwest Wyoming.
* WHEN...Until 9 PM MDT Monday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...There is high confidence that temperatures
will warm to values challenging daily, monthly, or even all-time
high temperature records Sunday and Monday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
&&
$$
For more information from the National Weather Service visit
https://weather.gov/saltlakecity.
For information on potential travel impacts visit
http://udottraffic.utah.gov
BWURGENT - WEATHER MESSAGE
National Weather Service Grand Junction CO
1030 AM MDT Sun Jul 12 2026
COZ001-002-006-007-UTZ024-027-130600-
/O.CON.KGJT.XH.W.0001.000000T0000Z-260714T0600Z/
Lower Yampa River Basin-Central Yampa River Basin-Grand Valley-
Debeque to Silt Corridor-Eastern Uinta Basin-Arches/Grand Flat-
Including the cities of Rangely, Dinosaur, Dinosaur National
Monument, Craig, Hayden, Meeker, Grand Junction, Fruita, Palisade,
Colorado National Monument, Whitewater, Collbran, De Beque, New
Castle, Mesa, Parachute, Rifle, Silt, Vernal, Jensen, Ballard, Fort
Duchesne, Randlett, Moab, Arches National Park, Castle Valley, and
Thompson Springs
1030 AM MDT Sun Jul 12 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT MONDAY
NIGHT...
* WHAT...Dangerously hot conditions with afternoon temperatures as
high as 100 to 106 expected.
* WHERE...In Colorado, Central Yampa River Basin, Lower Yampa River
Basin, Debeque to Silt Corridor, and Grand Valley. In Utah,
Arches/Grand Flat and Eastern Uinta Basin.
* 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.
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.
&&
$$URGENT - WEATHER MESSAGE
National Weather Service Grand Junction CO
1030 AM MDT Sun Jul 12 2026
UTZ022-029-130600-
/O.CON.KGJT.XH.W.0001.000000T0000Z-260713T0600Z/
Southeast Utah-Canyonlands/Natural Bridges-
Including the cities of Blanding, Bluff, Mexican Hat, Dead Horse
Point State Park, Canyonlands National Park, Natural Bridges, and
Fry Canyon
1030 AM MDT Sun Jul 12 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...
* WHAT...Dangerously hot conditions with afternoon temperatures as
high as 100 to 106 expected.
* WHERE...Canyonlands/Natural Bridges and Southeast Utah.
* WHEN...Until midnight MDT tonight.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$URGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
221 AM MDT Sun Jul 12 2026
IDZ051>055-064-065-131200-
/O.CON.KPIH.XH.W.0001.000000T0000Z-260714T0300Z/
Shoshone/Lava Beds-Arco/Mud Lake Desert-Upper Snake River Plain-
Lower Snake River Plain-Eastern Magic Valley-Big Hole Mountains-
Teton Valley-
Including the cities of Rexburg, Driggs, Carey, Tetonia,
Richfield, Rupert, Craters of the Moon NM, Mud Lake, American
Falls, St. Anthony, Victor, Idaho Falls, Shoshone, Blackfoot,
Heyburn, INL, Burley, Fort Hall, Oakley, Pocatello, Shelley, and
Ashton
221 AM MDT Sun Jul 12 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY...
* WHAT...Dangerously hot conditions with temperatures in the upper
90s to mid 100s likely.
* WHERE...Big Hole Mountains, Teton Valley, Eastern Magic Valley,
Shoshone/Lava Beds, Arco/Mud Lake Desert, Lower Snake River Plain,
and Upper Snake River Plain.
* WHEN...Until 9 PM MDT Monday.
* 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.
&&
$$URGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
221 AM MDT Sun Jul 12 2026
IDZ056>059-131200-
/O.CON.KPIH.XH.W.0001.000000T0000Z-260714T0300Z/
Southern Hills/Albion Mountains-Raft River Region-Marsh and Arbon
Highlands-Franklin/Eastern Oneida Region-
Including the cities of Preston, Malad, McCammon, Lava Hot
Springs, Malta, Holbrook, Almo, Inkom, Thatcher, Downey, Albion,
and Rockland
221 AM MDT Sun Jul 12 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY...
* WHAT...Dangerously hot conditions with temperatures in the upper
90s to mid 100s likely.
* WHERE...Franklin/Eastern Oneida Region, Marsh and Arbon Highlands,
Raft River Region, and Southern Hills/Albion Mountains.
* WHEN...Until 9 PM MDT Monday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
Heat AdvisoryURGENT - WEATHER MESSAGE
National Weather Service Boise ID
1247 PM MDT Sun Jul 12 2026
IDZ012-014-ORZ064-130900-
/O.EXB.KBOI.HT.Y.0002.260713T2000Z-260714T0300Z/
Lower Treasure Valley-Upper Treasure Valley-Oregon Lower Treasure
Valley-
Including the cities of Nampa, Nyssa, Caldwell, Boise, and
Ontario
1247 PM MDT Sun Jul 12 2026 /1147 AM PDT Sun Jul 12 2026/
...HEAT ADVISORY IN EFFECT FROM 2 PM MDT /1 PM PDT/ TO 9 PM MDT /8
PM PDT/ MONDAY...
* WHAT...Temperatures up to 101 expected.
* WHERE...Treasure Valley Zones.
* WHEN...From 2 PM MDT /1 PM PDT/ to 9 PM MDT /8 PM PDT/ Monday.
* IMPACTS...Hot temperatures may cause heat illnesses, especially
for the young, elderly, and animals.
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.
&&
$$URGENT - WEATHER MESSAGE
National Weather Service Boise ID
1247 PM MDT Sun Jul 12 2026
IDZ016-030-130900-
/O.CON.KBOI.HT.Y.0002.000000T0000Z-260714T0300Z/
Western Magic Valley-Southern Twin Falls County-
Including the cities of Hollister, Twin Falls, and Rogerson
1247 PM MDT Sun Jul 12 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY...
* WHAT...Temperatures up to 99.
* WHERE...Southern Twin Falls County and Western Magic Valley.
* WHEN...Until 9 PM MDT Monday.
* IMPACTS...Hot temperatures may cause heat illnesses, especially
for the young, elderly, and animals.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
&&
$$
JMURGENT - WEATHER MESSAGE
National Weather Service Grand Junction CO
1030 AM MDT Sun Jul 12 2026
COZ020-021-130600-
/O.CON.KGJT.HT.Y.0001.000000T0000Z-260713T0600Z/
Paradox Valley/Lower Dolores River-Four Corners/Upper Dolores
River-
Including the cities of Gateway, Nucla, Norwood, Cortez, Dove Creek,
Mancos, Towaoc, and Mesa Verde National Park
1030 AM MDT Sun Jul 12 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT...
* WHAT...Dangerously hot conditions with afternoon temperatures as
high as 97 to 102 expected.
* WHERE...Four Corners/Upper Dolores River and Paradox Valley/Lower
Dolores River.
* WHEN...Until midnight MDT tonight.
* 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.
&&
$$
KAAURGENT - WEATHER MESSAGE
National Weather Service Elko NV
711 AM PDT Sun Jul 12 2026
NVZ031-034-035-038-039-130600-
/O.CON.KLKN.HT.Y.0001.000000T0000Z-260713T0600Z/
Northern Elko-Ruby Mountains and East Humboldt Range in Elko-
White Pine-Southwest Elko-South Central Elko-
Including the cities of Lee, McGill, Ruby Lake, Charleston, Ruth,
Jarbidge, Lamoille, Tuscarora, Cherry Creek, South Fork, Spring
Creek, Preston, Ryndon, Mountain City, Oasis, Elko, Lund, Ely,
Owyhee, Midas, Jiggs, Ely Airport, and Gibbs Ranch
711 AM PDT Sun Jul 12 2026
...A HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...
* WHAT...High temperatures of 97 to 102 degrees expected in the
valleys.
* WHERE...White Pine, Northern Elko, Ruby Mountains and East
Humboldt Range in Elko, South Central Elko, and Southwest Elko
Counties.
* WHEN...Until 11 PM PDT this evening.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, remain in an air-conditioned room, stay out
of the sun, and check on relatives and neighbors.
&&
$$URGENT - WEATHER MESSAGE
National Weather Service Elko NV
711 AM PDT Sun Jul 12 2026
NVZ033-130600-
/O.CON.KLKN.HT.Y.0001.000000T0000Z-260714T0600Z/
Southeastern Elko-
Including the cities of West Wendover
711 AM PDT Sun Jul 12 2026
...A HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT MONDAY
EVENING...
* WHAT...High temperatures 99 to 104 degrees expected.
* WHERE...Southeastern Elko County.
* WHEN...Until 11 PM PDT Monday evening.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, remain in an air-conditioned room, stay out
of the sun, and check on relatives and neighbors.
&&
$$
BSURGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
221 AM MDT Sun Jul 12 2026
IDZ060>063-066>068-070-075-131200-
/O.CON.KPIH.HT.Y.0001.000000T0000Z-260714T0300Z/
Bear River Range-Bear Lake Valley-Blackfoot Mountains-Caribou
Range-Centennial Mountains - Island Park-Beaverhead - Lemhi
Highlands-Lost River Valley-Challis/Pahsimeroi Valleys-Wood River
Foothills-
Including the cities of Georgetown, Grace, Emigration Summit,
Swan Valley, Bone, Chilly, Edie School, Henry, Dubois, Island
Park, Challis, St. Charles, Howe, Kilgore, Spencer, Picabo,
Bellevue, Small, Mackay, Arco, Soda Springs, Hailey, Montpelier,
and Wayan
221 AM MDT Sun Jul 12 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY...
* WHAT...Hot conditions with temperatures in the upper 90s to near
100 likely.
* WHERE...Challis/Pahsimeroi Valleys, Lost River Valley, Wood River
Foothills, Beaverhead - Lemhi Highlands, Centennial Mountains -
Island Park, Bear Lake Valley, Bear River Range, Blackfoot
Mountains, and Caribou Range.
* WHEN...Until 9 PM MDT Monday.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
Visit weather.gov/pocatello for more information.
13
Air Quality AlertCOC085-091-131500-
Montrose-Ouray-
410 PM MDT Sun Jul 12 2026
...AIR QUALITY HEALTH ADVISORY FOR WILDFIRE SMOKE FROM 900 AM
SUNDAY UNTIL 900 AM MONDAY...
The Colorado Department of Public Health and Environment has
issued the following...
WHAT...Air Quality Health Advisory for Wildfire Smoke.
WHERE...Montrose and Ouray Counties. Locations include, but are
not limited to, Montrose, Ridgway, and Ouray.
WHEN...900 AM Sunday July 12 to 900 AM Monday July 13
IMPACTS...Moderate to heavy smoke from the Gold Mountain Fire is
possible throughout the advisory area through at least Monday
morning. The heaviest smoke is expected along the Highway 550
corridor.
HEALTH INFORMATION...Public Health Recommendations: If smoke is
thick or becomes thick in your neighborhood you may want to remain
indoors. This is especially true for those with heart disease,
respiratory illnesses, the very young, and older adults. Consider
limiting outdoor activity when moderate to heavy smoke is present.
Consider relocating temporarily if smoke is present indoors and is
making you ill. If visibility is less than 5 miles in smoke in
your neighborhood, smoke has reached levels that are unhealthy.
$$
