Grand Canyon National Park, Arizona
Regional Weather Alerts
| Alert: | Blowing Dust Advisory |
| Area(s): | 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: | 21aaeor38aa -> 21apeor0ap |
| Onset: | 21apeor0ap -> 21apeor0ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Tucson AZ on 21aaeor38aa |
| Headline: | Blowing Dust Advisory issued August 21 at 9:38AM MST until August 21 at 9:00PM MST by NWS Tucson AZ |
| Description: |
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with temperatures ranging from 105 to 110 across much of Pima and southeastern Pinal counties leading to Major Heat Risk. In other areas of southeastern Arizona, high temperatures will range from 100 to 105 degrees. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected. * WHERE...South Central Pinal County, Southeast Pinal County, Tohono O'odham Nation, and Tucson Metro Area. * WHEN...The Extreme Heat Warning is in effect now until 8 PM MST Friday. The Blowing Dust Advisory will be in effect from 4 PM this afternoon to 9 PM MST this evening. * IMPACTS...Hazardous driving conditions due to reduced visibility. Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Major Heat Risk is when heat will affect anyone without cooling or hydration as well as health systems and industries. |
| Alert: | Extreme Heat Warning |
| Area(s): | Western Pima County Including Ajo/Organ Pipe Cactus National Monument; Upper Santa Cruz River and Altar Valleys including Nogales; Upper San Pedro River Valley including Sierra Vista/Benson; Upper Gila River and Aravaipa Valleys including Clifton/Safford |
| Effective: | 21aaeor38aa -> 22apeor0ap |
| Onset: | 21aaeor38aa -> 21apeor0ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Tucson AZ on 21aaeor38aa |
| Headline: | Extreme Heat Warning issued August 21 at 9:38AM MST until August 22 at 8:00PM MST by NWS Tucson AZ |
| Description: |
* WHAT...Dangerously hot conditions with temperatures ranging from 105 to 110 across much of Pima and southeastern Pinal counties leading to Major Heat Risk. In other areas of southeastern Arizona, high temperatures will range from 100 to 105 degrees. * WHERE...Upper Gila River Valley, Upper San Pedro River Valley, Upper Santa Cruz River Valley/Altar Valley, and Western Pima County. * WHEN...Until 8 PM MST Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Major Heat Risk is when heat will affect anyone without cooling or hydration as well as health systems and industries. |
| Alert: | Extreme Heat Warning |
| Area(s): | 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: | 21aaeor38aa -> 22apeor0ap |
| Onset: | 21aaeor38aa -> 21apeor0ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Tucson AZ on 21aaeor38aa |
| Headline: | Extreme Heat Warning issued August 21 at 9:38AM MST until August 22 at 8:00PM MST by NWS Tucson AZ |
| Description: |
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with temperatures ranging from 105 to 110 across much of Pima and southeastern Pinal counties leading to Major Heat Risk. In other areas of southeastern Arizona, high temperatures will range from 100 to 105 degrees. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected. * WHERE...South Central Pinal County, Southeast Pinal County, Tohono O'odham Nation, and Tucson Metro Area. * WHEN...The Extreme Heat Warning is in effect now until 8 PM MST Friday. The Blowing Dust Advisory will be in effect from 4 PM this afternoon to 9 PM MST this evening. * IMPACTS...Hazardous driving conditions due to reduced visibility. Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Major Heat Risk is when heat will affect anyone without cooling or hydration as well as health systems and industries. |
| Alert: | Blowing Dust Advisory |
| Area(s): | South Mountain/Ahwatukee; Southeast Valley/Queen Creek |
| Effective: | 21aaeor27aa -> 21apeor0ap |
| Onset: | 21apeor0ap -> 21apeor30ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 21aaeor27aa |
| Headline: | Blowing Dust Advisory issued August 21 at 9:27AM MST until August 21 at 9:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...For the Extreme Heat Warning, dangerously hot conditions. Afternoon temperatures 110 to 113. Major Heat Risk. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected. * WHERE...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 4 PM this afternoon to 9 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. |
| Alert: | Extreme Heat Warning |
| Area(s): | South Mountain/Ahwatukee; Southeast Valley/Queen Creek |
| Effective: | 21aaeor27aa -> 22apeor0ap |
| Onset: | 21aaeor27aa -> 21apeor30ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 21aaeor27aa |
| Headline: | Extreme Heat Warning issued August 21 at 9:27AM MST until August 22 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...For the Extreme Heat Warning, dangerously hot conditions. Afternoon temperatures 110 to 113. Major Heat Risk. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected. * WHERE...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 4 PM this afternoon to 9 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. |
| Alert: | Extreme Heat Warning |
| Area(s): | Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley |
| Effective: | 21aaeor27aa -> 22apeor0ap |
| Onset: | 21aaeor27aa -> 21apeor30ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 21aaeor27aa |
| Headline: | Extreme Heat Warning issued August 21 at 9:27AM MST until August 22 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 116. Major Heat Risk. * WHERE...Portions of southwest Arizona and southeast and southern 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: | Extreme Heat Warning |
| Area(s): | Northwest Pinal County; West Pinal County |
| Effective: | 21aaeor27aa -> 22apeor0ap |
| Onset: | 21aaeor27aa -> 21apeor30ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 21aaeor27aa |
| Headline: | Extreme Heat Warning issued August 21 at 9:27AM MST until August 22 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...For the Extreme Heat Warning, dangerously hot conditions. Afternoon temperatures 107 to 114. Major Heat Risk. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected. * WHERE...Northwest Pinal County and West Pinal County. * WHEN...For the Extreme Heat Warning, until 8 PM MST Friday. For the Blowing Dust Advisory, from 4 PM this afternoon to 9 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. |
| Alert: | Extreme Heat Warning |
| Area(s): | Aguila Valley; Tonopah Desert; Gila Bend; Cave Creek/New River; New River Mesa; Rio Verde/Salt River; Fountain Hills/East Mesa; Superior; Apache Junction/Gold Canyon; Tonto Basin; Sonoran Desert Natl Monument; San Carlos; Globe/Miami |
| Effective: | 21aaeor27aa -> 22apeor0ap |
| Onset: | 21aaeor27aa -> 21apeor30ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 21aaeor27aa |
| Headline: | Extreme Heat Warning issued August 21 at 9:27AM MST until August 22 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...Dangerously hot conditions. Afternoon temperatures 106 to 115. Major Heat Risk. * WHERE...A portion of south central Arizona. * 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): | Northwest Valley; Buckeye/Avondale; Deer Valley; Central Phoenix; North Phoenix/Glendale; Scottsdale/Paradise Valley; East Valley |
| Effective: | 21aaeor27aa -> 22apeor0ap |
| Onset: | 21aaeor27aa -> 21apeor30ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 21aaeor27aa |
| Headline: | Extreme Heat Warning issued August 21 at 9:27AM MST until August 22 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...Dangerously hot conditions. Afternoon temperatures 109 to 115. Major Heat Risk. * 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, 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. |
| Alert: | Blowing Dust Advisory |
| Area(s): | Northwest Pinal County; West Pinal County |
| Effective: | 21aaeor27aa -> 21apeor0ap |
| Onset: | 21apeor0ap -> 21apeor30ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 21aaeor27aa |
| Headline: | Blowing Dust Advisory issued August 21 at 9:27AM MST until August 21 at 9:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...For the Extreme Heat Warning, dangerously hot conditions. Afternoon temperatures 107 to 114. Major Heat Risk. For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected. * WHERE...Northwest Pinal County and West Pinal County. * WHEN...For the Extreme Heat Warning, until 8 PM MST Friday. For the Blowing Dust Advisory, from 4 PM this afternoon to 9 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. |
| Alert: | Air Quality Alert |
| Area(s): | Maricopa, AZ |
| Effective: | 21aaeor12aa |
| Onset: | 21aaeor12aa -> 22apeor0ap |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Phoenix AZ on 21aaeor12aa |
| Headline: | Air Quality Alert issued August 21 at 9:12AM MST by NWS Phoenix AZ |
| Description: |
AQAPSR The Arizona Department of Environmental Quality (ADEQ) has extended an Ozone High Pollution Advisory for the Phoenix Metro Area through Friday. This means that forecast weather conditions combined with existing ozone levels are expected to result in local maximum 8-hour ozone concentrations that pose a health risk. Adverse health effects increase as air quality deteriorates. Ozone is an air contaminant which can cause breathing difficulties for children, older adults, as well as persons with respiratory problems. A decrease in physical activity is recommended. You are urged to car pool, telecommute or use mass transit. The use of gasoline-powered equipment should be reduced or done late in the day. For details on this High Pollution Advisory, visit the ADEQ internet site at www.azdeq.gov/forecast/phoenix or call 602-771-2300. |
| Alert: | Extreme Heat Warning |
| Area(s): | Northwest Plateau; Lake Havasu and Fort Mohave; Northwest Deserts; Lake Mead National Recreation Area; Owens Valley; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Lincoln County; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Lake Mead National Recreation Area; Southern Clark County |
| Effective: | 21aaeor39aa -> 24aaeor0aa |
| Onset: | 21aaeor39aa -> 22aaeor0aa |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Las Vegas NV on 21aaeor39aa |
| Headline: | Extreme Heat Warning issued August 21 at 2:39AM PDT until August 23 at 11:00PM PDT by NWS Las Vegas NV |
| Description: |
* WHAT...Dangerously hot conditions with temperatures around 105 in Kingman, Golden Valley, Dolan Springs; around 110 in Las Vegas, Pahrump, Barstow, Yucca Valley, Twentynine Palms; around 115 in Laughlin, Bullhead City, Needles, Lake Havasu City; around 120 at Furnace Creek in Death Valley National Park. Expect minimal overnight relief. Major-to-Extreme Heat Risk. In the Owens Valley, temperatures will be around 100 to 105, yielding Moderate Heat Risk. * WHERE...Portions of northwest Arizona, southeast California, and south central and southern Nevada. * WHEN...Until 11 PM PDT /11 PM MST/ Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. |
| Alert: | Extreme Heat Warning |
| Area(s): | Grand Canyon Country |
| Effective: | 21aaeor48aa -> 22apeor0ap |
| Onset: | 21aaeor48aa -> 22aaeor0aa |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Flagstaff AZ on 21aaeor48aa |
| Headline: | Extreme Heat Warning issued August 21 at 12:48AM MST until August 22 at 8:00PM MST by NWS Flagstaff AZ |
| Description: |
* WHAT...Dangerously hot conditions below 4000 feet, with daytime temperatures ranging from 104 degrees at Havasupai Gardens, to 114 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...Until 8 PM MST Friday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure. |
| Alert: | Air Quality Alert |
| Area(s): | Maricopa, AZ |
| Effective: | 20aaeor35aa |
| Onset: | 20aaeor35aa -> 21apeor0ap |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Phoenix AZ on 20aaeor35aa |
| Headline: | Air Quality Alert issued August 20 at 8:35AM MST by NWS Phoenix AZ |
| Description: |
AQAPSR The Arizona Department of Environmental Quality (ADEQ) has issued an Ozone High Pollution Advisory for the Phoenix Metro Area on Thursday. This means that forecast weather conditions combined with existing ozone levels are expected to result in local maximum 8-hour ozone concentrations that pose a health risk. Adverse health effects increase as air quality deteriorates. Ozone is an air contaminant which can cause breathing difficulties for children, older adults, as well as persons with respiratory problems. A decrease in physical activity is recommended. You are urged to car pool, telecommute or use mass transit. The use of gasoline-powered equipment should be reduced or done late in the day. For details on this High Pollution Advisory, visit the ADEQ internet site at www.azdeq.gov/forecast/phoenix or call 602-771-2300. |