Hot temperatures typically 7 to 11 degrees above normal were experienced across southeast Arizona August 3 and 4. The Pima County Medical Examiner confirmed that heat was the primary cause of death for two individuals in Tucson on August 3 and one individual found in the desert near Arivaca on August 4.
Every event with a place to put it; 9 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS TWC wrote it up.
Hot temperatures typically 7 to 11 degrees above normal were experienced across southeast Arizona August 3 and 4. The Pima County Medical Examiner confirmed that heat was the primary cause of death for two individuals in Tucson on August 3 and one individual found in the desert near Arivaca on August 4.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tucson, AZ wrote its last area forecast discussion before the first event at Aug 3, 3:00 AM MST, 7 hours earlier.
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</html>Preliminary Local Storm Report
National Weather Service Tucson AZ
956 AM MST Sat Aug 3 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0602 PM Tstm Wnd Dmg 8 SSE Tucson 32.10N 110.84W
08/02/2024 Pima AZ Trained Spotter
Delayed report. Numerous reports of
thunderstorm related tree damage and damage
to mobile homes. Reports near the
intersection of I-10 and Kolb Rd.
0652 PM Tstm Wnd Dmg 5 ESE Marana 32.39N 111.09W
08/02/2024 Pima AZ Public
Delayed report. Report of tree damage due to
thunderstorm winds near intersection of Twin
Peaks Rd and Oasis Rd.
&&
ALC/TGDThe national radar mosaic for the moment the first event began.
6 excessive heat, 3 heat. Local standard time, as filed.
Hot temperatures about 7 to 11 degrees above normal were experienced in western Pima County, causing the Major Heat Risk category to be reached.
Hot temperatures about 7 to 11 degrees above normal were experienced on the Tohono O'odham Nation, causing the Major Heat Risk category to be reached.
Hot temperatures about 4 to 7 degrees above normal were experienced in the Arivaca and Sasabe areas, causing the moderate Heat Risk category to be reached. The Pima County Medical Examiner determined that heat was the primary cause of death for one individual found in the desert near Arivaca on August 4.
Hot temperatures about 7 to 11 degrees above normal were experienced in the Tucson Metro area, causing the Major Heat Risk category to be reached. The Pima County Medical Examiner determined that heat was the primary cause of death for two individuals in Tucson on August 3.
Hot temperatures about 7 to 11 degrees above normal were experienced in south central Pinal County, causing the Major Heat Risk category to be reached.
Hot temperatures about 7 to 11 degrees above normal were experienced in southeast Pinal County, causing the Major Heat Risk category to be reached.
Hot temperatures about 7 to 11 degrees above normal were experienced in the upper San Pedro River Valley, causing the Major Heat Risk category to be reached.
Hot temperatures about 7 to 11 degrees above normal were experienced in eastern Cochise County, causing the Major Heat Risk category to be reached.
Hot temperatures about 7 to 11 degrees above normal were experienced in the Safford area, causing the Major Heat Risk category to be reached.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Heat, Upper Santa Cruz River and Altar Valleys | 2024-08-04 | 30 | Male | Outside/Open Areas | Direct |
| Excessive Heat, Tucson Metro Area | 2024-08-03 | 57 | Male | Mobile/Trailer Home | Direct |
| Excessive Heat, Tucson Metro Area | 2024-08-03 | 77 | Male | Mobile/Trailer Home | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2024Every state in 2024This day in weather historyWarnings in Arizona, August 2024
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1202246, 1202247, 1202249, 1202253, 1202254, 1202255, 1202256, 1202258, 1202259.