An upper level ridge of high pressure strengthened over the Intermountain West going into the latter part of August, leading to excessive heat conditions across south-central Arizona. Afternoon high temperatures observed at Phoenix Sky Harbor climbed between 111-115 degrees during the August 15-17th timeframe. On the 16th, the high temperature of 115 degrees tied the record high for the date set back in 2020. According to the Maricopa County Department of Public Health, there were 20 heat-associated fatalities that occurred during this event. Additionally, one heat-associated fatality occurred in La Paz County during this time.

Excessive Heat in YUMA, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in APACHE JUNCTION/GOLD CANYON, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in SONORAN DESERT NATL MONUMENT, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in CAVE CREEK/NEW RIVER, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in DEER VALLEY, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in FOUNTAIN HILLS/EAST MESA, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in SOUTH MOUNTAIN/AHWATUKEE, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in PARKER VALLEY, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in NORTHWEST PINAL COUNTY, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in WEST PINAL COUNTY, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Heat in CENTRAL PHOENIX, ARIZONA
From 15-AUG-23 00:00:00 to 15-AUG-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

One direct fatality was reported by the Maricopa County Department of Public Health, with their details, such as age, gender, circumstances, and exact location unavailable.

Heat in NORTH PHOENIX/GLENDALE, ARIZONA
From 15-AUG-23 00:00:00 to 15-AUG-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

One direct fatality was reported by the Maricopa County Department of Public Health, with their details, such as age, gender, circumstances, and exact location unavailable.

Excessive Heat in SCOTTSDALE/PARADISE VALLEY, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

One direct fatality was reported by the Maricopa County Department of Public Health, with their details, such as age, gender, circumstances, and exact location unavailable.

Excessive Heat in AGUILA VALLEY, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in EAST VALLEY, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Three direct fatalities were reported by the Maricopa County Department of Public Health, with their details, such as age, gender, circumstances, and exact location unavailable.

Excessive Heat in BUCKEYE/AVONDALE, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

One direct fatality was reported by the Maricopa County Department of Public Health, with their details, such as age, gender, circumstances, and exact location unavailable.

Excessive Heat in NORTHWEST VALLEY, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in TONOPAH DESERT, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in GILA BEND, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Heat in EAST VALLEY, ARIZONA
From 15-AUG-23 00:00:00 to 15-AUG-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

One direct fatality was reported by the Maricopa County Department of Public Health, with their details, such as age, gender, circumstances, and exact location unavailable.

Excessive Heat in CENTRAL PHOENIX, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Eleven heat-associated fatalities (8 direct and 3 indirect) were reported by the Maricopa County Department of Public Health, with their details, such as age, gender, circumstances, and exact location unavailable.

Excessive Heat in NORTH PHOENIX/GLENDALE, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

One direct fatality was reported by the Maricopa County Department of Public Health, with their details, such as age, gender, circumstances, and exact location unavailable.

Heat in CENTRAL LA PAZ, ARIZONA
From 16-AUG-23 00:00:00 to 16-AUG-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

One direct fatality was reported in La Paz County, with their details, such as age, gender, circumstances, and exact location unavailable.

Excessive Heat in SOUTHEAST VALLEY/QUEEN CREEK, ARIZONA
From 16-AUG-23 10:00:00 to 17-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official