Black Canyon Hwy I17 Warnings, Watches and Advisories

Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Black Canyon Hwy I17.

Use the Radar Maps link provided to understand the trajectory of a storm.

Extreme Heat Warning issued July 8 at 2:54AM MST until July 9 at 8:00PM MST by NWS Tucson AZ

* WHAT...Dangerously hot conditions with afternoon temperatures 108 to 112. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...South Central Pinal County, Southeast Pinal County, Tohono O'odham Nation, Tucson Metro Area, Upper Gila River Valley, and Western Pima County. * WHEN...From 10 AM to 8 PM MST Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Extreme Heat Warning issued July 8 at 1:08AM PDT until July 9 at 8:00PM PDT by NWS Las Vegas NV

* WHAT...Dangerously hot conditions are expected on Wednesday. Afternoon high temperatures in the Colorado River Valley will be between 110 and 120 degrees. High temperatures in the lower elevations of southern Mohave County will be around 110 to 115 degrees. * WHERE...Lake Mead National Recreation Area, Lake Havasu and Fort Mohave, Arizona's Northwest Deserts, and San Bernardino County-Upper Colorado River Valley. * WHEN...From 10 AM PDT /10 AM MST/ to 8 PM PDT /8 PM MST/ Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Extreme Heat Warning issued July 8 at 12:03AM MST until July 10 at 8:00PM MST by NWS Phoenix AZ

* WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 118 expected. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...Central La Paz County, Parker Valley, Kofa, Yuma, Southeast Yuma County, and Gila River Valley. * WHEN...From 10 AM Wednesday to 8 PM MST Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Extreme Heat Warning issued July 8 at 12:03AM MST until July 10 at 8:00PM MST by NWS Phoenix AZ

* WHAT...Dangerously hot conditions. Afternoon temperatures 110 to 117 expected. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...The Northwest Valley of the Phoenix Metro Area, The East Valley of the Phoenix Metro Area, Buckeye/Avondale, Deer Valley, Central Phoenix, North Phoenix/Glendale, Scottsdale/Paradise Valley, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek. * WHEN...From 10 AM this morning to 8 PM MST Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free cooling center, transportation, water, and more.

Extreme Heat Warning issued July 8 at 12:03AM MST until July 10 at 8:00PM MST by NWS Phoenix AZ

* WHAT...Dangerously hot conditions. Afternoon temperatures 108 to 117 expected. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...Sonoran Desert National Monument, Aguila Valley, Tonopah Desert, Gila Bend, Northwest Pinal County, West Pinal County, and Apache Junction/Gold Canyon. * WHEN...From 10 AM this morning to 8 PM MST Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Heat Advisory issued July 8 at 12:03AM MST until July 9 at 8:00PM MST by NWS Phoenix AZ

* WHAT...Hot conditions with afternoon temperatures 98 to 110 expected. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...Mazatzal Mountains, Pinal/Superstition Mountains, and Southeast Gila County. * WHEN...From 10 AM to 8 PM MST Wednesday. * IMPACTS...Hot temperatures may cause heat illnesses.

Extreme Heat Warning issued July 8 at 12:03AM MST until July 9 at 8:00PM MST by NWS Phoenix AZ

* WHAT...Dangerously hot conditions. Afternoon temperatures 108 to 116 expected. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...Cave Creek/New River, Dripping Springs, Fountain Hills/East Mesa, Globe/Miami, New River Mesa, Rio Verde/Salt River, Superior, and Tonto Basin. * WHEN...From 10 AM to 8 PM MST Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Extreme Heat Warning issued July 8 at 12:03AM MST until July 10 at 8:00PM MST by NWS Phoenix AZ

* WHAT...Dangerously hot conditions. Afternoon temperatures 106 to 112 expected. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...San Carlos. * WHEN...From 10 AM this morning to 8 PM MST Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Extreme Heat Warning issued July 7 at 12:00PM MST until July 10 at 8:00PM MST by NWS Flagstaff AZ

* WHAT...Dangerously hot conditions below 4000 feet, with daytime temperatures ranging from 105 degrees at Havasupai Gardens, to 116 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...Until 8 PM MST Thursday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure.

Extreme Heat Warning issued July 7 at 12:00PM MST until July 9 at 8:00PM MST by NWS Flagstaff AZ

* WHAT...Dangerously hot conditions, with temperatures up to 112 expected below 4000 feet. * WHERE...Lower elevations of northern Gila and Yavapai counties. * WHEN...From 10 AM to 8 PM MST Wednesday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure.