Arizona, 2025Excessive Heat in Arizona, August 20 to 22, 2025
August 20 to 22, 2025 · NWS TWC · 4 events in 2 counties and zones
Temperatures in Southeastern Arizona were 6 degrees above normal with Moderate to Major HeatRisk. The Pima County Medical Examiner found that the cause of death for 8 individuals.
Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
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- Hail
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- Heat and drought
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- Deaths
- 8
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 4
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.
Temperatures in Southeastern Arizona were 6 degrees above normal with Moderate to Major HeatRisk. The Pima County Medical Examiner found that the cause of death for 8 individuals. Six were heat contributed, three in Tucson, one in Oro Valley, one in Marana, and one in Safford. Two individuals deaths were heat caused, one in Tucson and one in Green Valley. An Extreme Heat Warning was in effect for all the lower elevations, excluding eastern Cochise County each day.
What forecasters said that day
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 20, 8:30 AM MST, 1 hour 30 minutes earlier.
Area forecast discussion, Aug 20, 8:30 AM MST, 1 hour 30 minutes before
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</html>Excessive Heat, Tucson Metro Area
- When
- August 20, 10:00 AM MST to 8:00 PM MST
- Where
- Tucson Metro Area forecast zone
- Deaths
- 0 direct, 2 indirect
- Reported by
- County Official
- Coordinates
- 32.097, -111.790 (the zone’s center; the record gives no point)
High temperatures in Southeastern Arizona were 6 degrees above normal, causing Moderate HeatRisk. The Tucson International Airport reached a high temperature of 105 degrees Fahrenheit. The Pima County Medical Examiner found that heat was a contributing factor in the cause of death for two individuals in Marana and Green Valley.
Excessive Heat, Tucson Metro Area
- When
- August 21, 10:00 AM MST to 8:00 PM MST
- Where
- Tucson Metro Area forecast zone
- Deaths
- 2 direct, 2 indirect
- Reported by
- County Official
- Coordinates
- 32.097, -111.790 (the zone’s center; the record gives no point)
High temperatures in Southeastern Arizona were 6 degrees above normal, causing Moderate HeatRisk. The Tucson International Airport reached a high temperature of 105 degrees Fahrenheit. The Pima County Medical Examiner found that heat was a contributing factor in the cause of death for two individuals in Tucson and was the primary factor for two individuals, one in Green Valley and one in Tucson.
Excessive Heat, Tucson Metro Area
- When
- August 22, 10:00 AM MST to 8:00 PM MST
- Where
- Tucson Metro Area forecast zone
- Deaths
- 0 direct, 1 indirect
- Reported by
- County Official
- Coordinates
- 32.097, -111.790 (the zone’s center; the record gives no point)
High temperatures in Southeastern Arizona were 6 degrees above normal, causing Major HeatRisk. The Tucson International Airport reached a high temperature of 105 degrees Fahrenheit. The Pima County Medical Examiner found that heat was a contributing factor in the cause of death for an individual in Tucson.
Excessive Heat, Upper Gila River and Aravaipa Valleys
- When
- August 22, 10:00 AM MST to 8:00 PM MST
- Where
- Upper Gila River and Aravaipa Valleys forecast zone
- Deaths
- 0 direct, 1 indirect
- Reported by
- County Official
- Coordinates
- 33.074, -109.563 (the zone’s center; the record gives no point)
High temperatures in Southeastern Arizona were 6 degrees above normal, causing Major HeatRisk. The Safford Agriculture Center reached a high temperature of 102 degrees Fahrenheit. The Pima County Medical Examiner found that heat was a contributing factor in the cause of death for an individual in Safford.
- Excessive Heat
- Heat at or above the local excessive heat warning criteria, or heat that caused deaths.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- High Surf in Illinois, August 20, 20251 death · 1 event
- Damaging Wind and Lightning Strike in Tennessee, August 20, 2025$250,000 · 52 kt wind · 2 events
- Flash Flooding and Flood in Alabama, August 20, 2025$33,000 · 52 kt wind · 24 events
- Flash Flood and Damaging Winds in Alabama, August 20, 20251 injured · $3,000 · 50 kt wind · 6 events
- Marine Tropical Storm in North Atlantic Coastal Waters, August 20 to 22, 20259 events
- Excessive Heat in California, August 20 to 23, 20257 events
- Flash Flood and Damaging Winds in Louisiana, August 20, 202552 kt wind · 7 events
- Excessive Heat in Nevada, August 20 to 23, 20256 events
- Excessive Heat in Arizona, August 20 to 23, 20254 events
- Tropical Storm and Storm Surge in North Carolina, August 20 to 22, 20254 events
- Drought in Colorado, August 20 to 31, 20253 events
- Heat in Oklahoma, August 20, 20252 events
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 2026-10-01. Each event’s entry at NCEI: 1291533, 1291534, 1291535, 1291536.