A strong ridge of high pressure over the Southern Plains expanded westward into the Desert Southwest, leading to excessive heat conditions across the region. Record high temperatures were set on the 5th (116 degrees) and the 6th (114 degrees) in Phoenix, while record warm low temperatures were set on the 2nd (93 degrees), 3rd (92 degrees), and 7th (91 degrees). According to the Maricopa County Department of Public Health, there were a total of 55 heat-associated fatalities during this heat event. One of the heat fatalities that occurred during this time include a 34-year-old woman who went hiking at Deem Hills Recreation Area during the morning of the 4th but was later found deceased in a remote area near a trail. Additionally, two heat-associated fatalities occurred in La Paz County during this time.

Heat in EAST VALLEY, ARIZONA
From 02-AUG-23 00:00:00 to 02-AUG-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Four heat-associated fatalities (2 direct and 2 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 NORTHWEST VALLEY, ARIZONA
From 04-AUG-23 10:00:00 to 07-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 DEER VALLEY, ARIZONA
From 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in CENTRAL PHOENIX, ARIZONA
From 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Fifteen heat-associated fatalities (10 direct and 5 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 SCOTTSDALE/PARADISE VALLEY, ARIZONA
From 04-AUG-23 10:00:00 to 07-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 NORTH PHOENIX/GLENDALE, ARIZONA
From 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Four 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 EAST VALLEY, ARIZONA
From 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Four 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 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Two 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 DEER VALLEY, ARIZONA
From 04-AUG-23 09:30:00 to 04-AUG-23 12:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A 34-year-old woman went hiking at the Deem Hills Recreation Area around 0830MST when temperatures were in the low 90s, according to a nearby observation. She was then reported missing around noon after failing to return from her hike. Midday temperatures in the area were around 100-105 degrees. Family and friends searched for the missing hiker with firefighters and police. Her body was later discovered around 1700MST in a remote area near a trail. According to the Maricopa County Office of the Medical Examiner, heat was a contributing factor in the hiker's death.

Excessive Heat in CENTRAL LA PAZ, ARIZONA
From 05-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Two direct fatalities were reported in La Paz County, with their details, such as age, gender, circumstances, and exact location unavailable.

Excessive Heat in APACHE JUNCTION/GOLD CANYON, ARIZONA
From 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in YUMA, ARIZONA
From 05-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in NEW RIVER MESA, ARIZONA
From 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in RIO VERDE/SALT RIVER, ARIZONA
From 04-AUG-23 10:00:00 to 07-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 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in SOUTHEAST VALLEY/QUEEN CREEK, ARIZONA
From 04-AUG-23 10:00:00 to 07-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 04-AUG-23 10:00:00 to 07-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 04-AUG-23 10:00:00 to 07-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 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in AGUILA VALLEY, ARIZONA
From 04-AUG-23 10:00:00 to 07-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 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in SUPERIOR, ARIZONA
From 04-AUG-23 10:00:00 to 07-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 04-AUG-23 10:00:00 to 07-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 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Heat in NORTH PHOENIX/GLENDALE, ARIZONA
From 01-AUG-23 00:00:00 to 01-AUG-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

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

Heat in BUCKEYE/AVONDALE, ARIZONA
From 01-AUG-23 00:00:00 to 01-AUG-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

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

Heat in CENTRAL PHOENIX, ARIZONA
From 02-AUG-23 00:00:00 to 02-AUG-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Five heat-associated fatalities (2 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.

Heat in CENTRAL PHOENIX, ARIZONA
From 03-AUG-23 00:00:00 to 03-AUG-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Five heat-associated fatalities (3 direct and 2 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 SONORAN DESERT NATL MONUMENT, ARIZONA
From 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in SAN CARLOS, ARIZONA
From 04-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in DRIPPING SPRINGS, ARIZONA
From 04-AUG-23 10:00:00 to 07-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 03-AUG-23 00:00:00 to 03-AUG-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

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

Heat in BUCKEYE/AVONDALE, ARIZONA
From 03-AUG-23 00:00:00 to 03-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 CENTRAL PHOENIX, ARIZONA
From 01-AUG-23 00:00:00 to 01-AUG-23 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Five heat-associated fatalities (1 direct and 4 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 PARKER VALLEY, ARIZONA
From 05-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in KOFA, ARIZONA
From 05-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in SOUTHEAST YUMA COUNTY, ARIZONA
From 05-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Excessive Heat in GILA RIVER VALLEY, ARIZONA
From 05-AUG-23 10:00:00 to 07-AUG-23 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official