Phoenix, Arizona
Regional Weather Alerts
| Alert: | Extreme Heat Warning |
| Area(s): | Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Death Valley National Park; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Southern Clark County; Lake Mead - NV side; Lake Mohave - NV side |
| Effective: | 2026-08-19 @ 6:11 am -> 2026-08-20 @ 7:00 am |
| Onset: | 2026-08-19 @ 6:11 am -> 2026-08-21 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Las Vegas NV on 2026-08-19 @ 6:11 am |
| Headline: | Extreme Heat Warning issued August 19 at 4:11AM PDT until August 21 at 8:00PM PDT by NWS Las Vegas NV |
| Description: |
* WHAT...Dangerously hot conditions with temperatures up to 115 to 118 degrees expected through Death Valley and the lower Colorado River Valley, with highs between 107 to 110 degrees elsewhere. * WHERE...Portions of northwest Arizona, southeast California, and southern Nevada. * WHEN...Until 8 PM PDT /8 PM MST/ Friday. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events. |
| Alert: | Blowing Dust Advisory |
| Area(s): | Tonopah Desert; Gila Bend; Northwest Pinal County; West Pinal County; Sonoran Desert Natl Monument |
| Effective: | 2026-08-19 @ 2:14 am -> 2026-08-19 @ 5:30 pm |
| Onset: | 2026-08-19 @ 7:00 pm -> 2026-08-20 @ 12:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 2026-08-19 @ 2:14 am |
| Headline: | Blowing Dust Advisory issued August 19 at 12:14AM MST until August 19 at 10:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...For the Extreme Heat Warning, dangerously hot conditions. Afternoon temperatures 106 to 113. Major Heat Risk. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected. * WHERE...Gila Bend, Northwest Pinal County, Sonoran Desert Natl Monument, Tonopah Desert, and West Pinal County. * WHEN...For the Extreme Heat Warning, until 8 PM MST Friday. For the Blowing Dust Advisory, from 5 PM this afternoon to 10 PM MST this evening. * IMPACTS...Hazardous driving conditions due to reduced visibility. Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free cooling center, transportation, water and more. https://www.maricopa.gov/heat |
| Alert: | Extreme Heat Warning |
| Area(s): | Aguila Valley; Cave Creek/New River; Fountain Hills/East Mesa; Apache Junction/Gold Canyon |
| Effective: | 2026-08-19 @ 2:14 am -> 2026-08-19 @ 5:30 pm |
| Onset: | 2026-08-19 @ 2:14 am -> 2026-08-21 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 2026-08-19 @ 2:14 am |
| Headline: | Extreme Heat Warning issued August 19 at 12:14AM MST until August 21 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...Dangerously hot conditions. Afternoon temperatures 104 to 111 expected. Major Heat Risk. * WHERE...Aguila Valley, Apache Junction/Gold Canyon, Cave Creek/New River, and Fountain Hills/East Mesa. * WHEN...Until 8 PM MST Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free cooling center, transportation, water and more. https://www.maricopa.gov/heat |
| Alert: | Extreme Heat Warning |
| Area(s): | San Carlos |
| Effective: | 2026-08-19 @ 2:14 am -> 2026-08-19 @ 5:30 pm |
| Onset: | 2026-08-19 @ 2:14 am -> 2026-08-21 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 2026-08-19 @ 2:14 am |
| Headline: | Extreme Heat Warning issued August 19 at 12:14AM MST until August 21 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...Dangerously hot conditions. Afternoon temperatures 102 to 108 expected. Major Heat Risk. * WHERE...San Carlos. * WHEN...Until 8 PM MST Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. |
| Alert: | Extreme Heat Warning |
| Area(s): | Buckeye/Avondale; South Mountain/Ahwatukee; Southeast Valley/Queen Creek |
| Effective: | 2026-08-19 @ 2:14 am -> 2026-08-19 @ 5:30 pm |
| Onset: | 2026-08-19 @ 2:14 am -> 2026-08-21 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 2026-08-19 @ 2:14 am |
| Headline: | Extreme Heat Warning issued August 19 at 12:14AM MST until August 21 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...For the Extreme Heat Warning, dangerously hot conditions. Afternoon temperatures 109 to 112. Major Heat Risk. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected. * WHERE...Buckeye/Avondale, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek. * WHEN...For the Extreme Heat Warning, until 8 PM MST Friday. For the Blowing Dust Advisory, from 5 PM this afternoon to 10 PM MST this evening. * IMPACTS...Hazardous driving conditions due to reduced visibility. Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free cooling center, transportation, water and more. https://www.maricopa.gov/heat |
| Alert: | Extreme Heat Warning |
| Area(s): | Tonopah Desert; Gila Bend; Northwest Pinal County; West Pinal County; Sonoran Desert Natl Monument |
| Effective: | 2026-08-19 @ 2:14 am -> 2026-08-19 @ 5:30 pm |
| Onset: | 2026-08-19 @ 2:14 am -> 2026-08-21 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 2026-08-19 @ 2:14 am |
| Headline: | Extreme Heat Warning issued August 19 at 12:14AM MST until August 21 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...For the Extreme Heat Warning, dangerously hot conditions. Afternoon temperatures 106 to 113. Major Heat Risk. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected. * WHERE...Gila Bend, Northwest Pinal County, Sonoran Desert Natl Monument, Tonopah Desert, and West Pinal County. * WHEN...For the Extreme Heat Warning, until 8 PM MST Friday. For the Blowing Dust Advisory, from 5 PM this afternoon to 10 PM MST this evening. * IMPACTS...Hazardous driving conditions due to reduced visibility. Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free cooling center, transportation, water and more. https://www.maricopa.gov/heat |
| Alert: | Extreme Heat Warning |
| Area(s): | Northwest Valley; Deer Valley; Central Phoenix; North Phoenix/Glendale; Scottsdale/Paradise Valley; East Valley |
| Effective: | 2026-08-19 @ 2:14 am -> 2026-08-19 @ 5:30 pm |
| Onset: | 2026-08-19 @ 2:14 am -> 2026-08-21 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 2026-08-19 @ 2:14 am |
| Headline: | Extreme Heat Warning issued August 19 at 12:14AM MST until August 21 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...Dangerously hot conditions. Afternoon temperatures 108 to 111. Major Heat Risk. * WHERE...Central Phoenix, Deer Valley, East Valley, North Phoenix/Glendale, Northwest Valley, and Scottsdale/Paradise Valley. * WHEN...Until 8 PM MST Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free cooling center, transportation, water and more. https://www.maricopa.gov/heat |
| Alert: | Extreme Heat Warning |
| Area(s): | Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Imperial County Southwest; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley |
| Effective: | 2026-08-19 @ 2:14 am -> 2026-08-19 @ 5:30 pm |
| Onset: | 2026-08-19 @ 2:14 am -> 2026-08-21 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 2026-08-19 @ 2:14 am |
| Headline: | Extreme Heat Warning issued August 19 at 12:14AM MST until August 21 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...Dangerously hot and humid conditions. Afternoon temperatures 106 to 114 expected. Major Heat Risk. * WHERE...Portions of southwest Arizona and southeast California. * WHEN...Until 8 PM MST /8 PM PDT/ Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. |
| Alert: | Blowing Dust Advisory |
| Area(s): | Buckeye/Avondale; South Mountain/Ahwatukee; Southeast Valley/Queen Creek |
| Effective: | 2026-08-19 @ 2:14 am -> 2026-08-19 @ 5:30 pm |
| Onset: | 2026-08-19 @ 7:00 pm -> 2026-08-20 @ 12:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 2026-08-19 @ 2:14 am |
| Headline: | Blowing Dust Advisory issued August 19 at 12:14AM MST until August 19 at 10:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...For the Extreme Heat Warning, dangerously hot conditions. Afternoon temperatures 109 to 112. Major Heat Risk. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected. * WHERE...Buckeye/Avondale, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek. * WHEN...For the Extreme Heat Warning, until 8 PM MST Friday. For the Blowing Dust Advisory, from 5 PM this afternoon to 10 PM MST this evening. * IMPACTS...Hazardous driving conditions due to reduced visibility. Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free cooling center, transportation, water and more. https://www.maricopa.gov/heat |
| Alert: | Blowing Dust Advisory |
| Area(s): | Upper Santa Cruz River and Altar Valleys including Nogales |
| Effective: | 2026-08-19 @ 1:28 am -> 2026-08-20 @ 12:00 am |
| Onset: | 2026-08-19 @ 5:00 pm -> 2026-08-20 @ 12:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Tucson AZ on 2026-08-19 @ 1:28 am |
| Headline: | Blowing Dust Advisory issued August 18 at 11:28PM MST until August 19 at 10:00PM MST by NWS Tucson AZ |
| Description: |
* WHAT...Strong thunderstorms with organized outflow wind gusts of 45-55 mph will result in blowing dust, reducing visibility between one-quarter mile and one mile at times. Dense blowing dust will initially develop across southeast Pima and western Santa Cruz counties during the late afternoon and spread west to northwest across the Tohono O'odham Nation and into western Pima and southeast Pinal counties through the evening. * WHERE...Upper Santa Cruz River Valley/Altar Valley. * WHEN...From 3 PM to 10 PM MST Wednesday. * IMPACTS...Blowing dust can restrict visibilities below a mile posing a significant hazard to motorists. In addition, strong and gusty winds will likely suspend dust into the air that people and animals breathe. Individuals with heart disease and respiratory sensitivities may want to reduce their level of exertion to limit the dust they breathe into their lungs, especially if they are near dust prone locations. Those most at risk may feel better if they avoid outside exercise today, keeping windows and doors closed to help reduce exposure. |
| Alert: | Blowing Dust Advisory |
| Area(s): | Western Pima County Including Ajo/Organ Pipe Cactus National Monument; Tohono O'odham Nation including Sells; Tucson Metro Area including Tucson/Green Valley/Marana/Vail; South Central Pinal County including Eloy/Picacho Peak State Park; Southeast Pinal County including Kearny/Mammoth/Oracle |
| Effective: | 2026-08-19 @ 1:28 am -> 2026-08-20 @ 12:00 am |
| Onset: | 2026-08-19 @ 5:00 pm -> 2026-08-20 @ 12:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Tucson AZ on 2026-08-19 @ 1:28 am |
| Headline: | Blowing Dust Advisory issued August 18 at 11:28PM MST until August 19 at 10:00PM MST by NWS Tucson AZ |
| Description: |
* WHAT...Strong thunderstorms with organized outflow wind gusts of 45-55 mph will result in blowing dust, reducing visibility between one-quarter mile and one mile at times. Haboob formation is possible. Dense blowing dust will initially develop across southeast Pima and western Santa Cruz counties during the late afternoon and spread west to northwest across the Tohono O'odham Nation and into western Pima and southeast Pinal counties through the evening. Dangerously hot conditions with high temperatures ranging between 103 to 110 degrees and low temperatures 79 to 85 degrees. Major HeatRisk is expected. * WHERE...Pinal County, Tohono O'odham Nation, Tucson Metro Area, and Western Pima County. * WHEN...For the Extreme Heat Warning, until 8 PM MST Friday. For the Blowing Dust Advisory, from 3 PM to 10 PM MST Wednesday. * IMPACTS...Blowing dust can restrict visibilities below a mile posing a significant hazard to motorists. In addition, strong and gusty winds will likely suspend dust into the air that people and animals breathe. Individuals with heart disease and respiratory sensitivities may want to reduce their level of exertion to limit the dust they breathe into their lungs, especially if they are near dust prone locations. Those most at risk may feel better if they avoid outside exercise today, keeping windows and doors closed to help reduce exposure. For the Extreme Heat Warning...heat related illnesses increase significantly during extreme heat events. |
| Alert: | Extreme Heat Warning |
| Area(s): | Upper Gila River and Aravaipa Valleys including Clifton/Safford |
| Effective: | 2026-08-19 @ 1:28 am -> 2026-08-20 @ 12:00 am |
| Onset: | 2026-08-19 @ 1:28 am -> 2026-08-21 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Tucson AZ on 2026-08-19 @ 1:28 am |
| Headline: | Extreme Heat Warning issued August 18 at 11:28PM MST until August 21 at 8:00PM MST by NWS Tucson AZ |
| Description: |
* WHAT...Dangerously hot conditions with high temperatures ranging between 103 to 110 degrees and low temperatures 79 to 85 degrees. Major HeatRisk is expected. * WHERE...Portions of Graham and southern Greenlee counties including the Upper Gila River Valley. * WHEN...Until 8 PM MST Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. |
| Alert: | Extreme Heat Warning |
| Area(s): | Western Pima County Including Ajo/Organ Pipe Cactus National Monument; Tohono O'odham Nation including Sells; Tucson Metro Area including Tucson/Green Valley/Marana/Vail; South Central Pinal County including Eloy/Picacho Peak State Park; Southeast Pinal County including Kearny/Mammoth/Oracle |
| Effective: | 2026-08-19 @ 1:28 am -> 2026-08-20 @ 12:00 am |
| Onset: | 2026-08-19 @ 1:28 am -> 2026-08-21 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Tucson AZ on 2026-08-19 @ 1:28 am |
| Headline: | Extreme Heat Warning issued August 18 at 11:28PM MST until August 21 at 8:00PM MST by NWS Tucson AZ |
| Description: |
* WHAT...Strong thunderstorms with organized outflow wind gusts of 45-55 mph will result in blowing dust, reducing visibility between one-quarter mile and one mile at times. Haboob formation is possible. Dense blowing dust will initially develop across southeast Pima and western Santa Cruz counties during the late afternoon and spread west to northwest across the Tohono O'odham Nation and into western Pima and southeast Pinal counties through the evening. Dangerously hot conditions with high temperatures ranging between 103 to 110 degrees and low temperatures 79 to 85 degrees. Major HeatRisk is expected. * WHERE...Pinal County, Tohono O'odham Nation, Tucson Metro Area, and Western Pima County. * WHEN...For the Extreme Heat Warning, until 8 PM MST Friday. For the Blowing Dust Advisory, from 3 PM to 10 PM MST Wednesday. * IMPACTS...Blowing dust can restrict visibilities below a mile posing a significant hazard to motorists. In addition, strong and gusty winds will likely suspend dust into the air that people and animals breathe. Individuals with heart disease and respiratory sensitivities may want to reduce their level of exertion to limit the dust they breathe into their lungs, especially if they are near dust prone locations. Those most at risk may feel better if they avoid outside exercise today, keeping windows and doors closed to help reduce exposure. For the Extreme Heat Warning...heat related illnesses increase significantly during extreme heat events. |
| Alert: | Extreme Heat Warning |
| Area(s): | Grand Canyon Country |
| Effective: | 2026-08-18 @ 3:40 pm -> 2026-08-20 @ 10:00 pm |
| Onset: | 2026-08-18 @ 3:40 pm -> 2026-08-20 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Flagstaff AZ on 2026-08-18 @ 3:40 pm |
| Headline: | Extreme Heat Warning issued August 18 at 1:40PM MST until August 20 at 8:00PM MST by NWS Flagstaff AZ |
| Description: |
* WHAT...Dangerously hot conditions expected below 4000 feet, with daytime temperatures ranging from 96 to 102 degrees at Havasupai Gardens, and 107 to 111 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. |