Excessive Heat, Aguila Valley
- When
- September 17, 10:00 AM MST to 8:00 PM MST
- Where
- Aguila Valley forecast zone
- Reported by
- County Official
- Coordinates
- 33.349, -112.491 (the zone’s center; the record gives no point)
Excessive Heat in Arizona, September 17, 2020
Strong high pressure over the Desert Southwest led to excessive heat conditions on the 17th. A record high temperature of 109 degrees was set in Phoenix on this date.
Where it happened
Every event with a place to put it; 11 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
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 11
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.
What happened
The episode as NWS PSR wrote it up.
Strong high pressure over the Desert Southwest led to excessive heat conditions on the 17th. A record high temperature of 109 degrees was set in Phoenix on this date. No heat-associated fatalities were reported by the Maricopa County Department of Health during this event.
The radar
The national radar mosaic for the moment the first event began.
Event by event
11 excessive heat. Local standard time, as filed.
Excessive Heat, Northwest Valley
- When
- September 17, 10:00 AM MST to 8:00 PM MST
- Where
- Northwest Valley forecast zone
- Reported by
- County Official
- Coordinates
- 33.349, -112.491 (the zone’s center; the record gives no point)
Excessive Heat, Buckeye/Avondale
- When
- September 17, 10:00 AM MST to 8:00 PM MST
- Where
- Buckeye/Avondale forecast zone
- Reported by
- County Official
- Coordinates
- 33.349, -112.491 (the zone’s center; the record gives no point)
Excessive Heat, Deer Valley
- When
- September 17, 10:00 AM MST to 8:00 PM MST
- Where
- Deer Valley forecast zone
- Reported by
- County Official
- Coordinates
- 33.349, -112.491 (the zone’s center; the record gives no point)
Excessive Heat, North Phoenix/Glendale
- When
- September 17, 10:00 AM MST to 8:00 PM MST
- Where
- North Phoenix/Glendale forecast zone
- Reported by
- County Official
- Coordinates
- 33.349, -112.491 (the zone’s center; the record gives no point)
Excessive Heat, Scottsdale/Paradise Valley
- When
- September 17, 10:00 AM MST to 8:00 PM MST
- Where
- Scottsdale/Paradise Valley forecast zone
- Reported by
- County Official
- Coordinates
- 33.349, -112.491 (the zone’s center; the record gives no point)
Excessive Heat, East Valley
- When
- September 17, 10:00 AM MST to 8:00 PM MST
- Where
- East Valley forecast zone
- Reported by
- County Official
- Coordinates
- 33.349, -112.491 (the zone’s center; the record gives no point)
Excessive Heat, Fountain Hills/East Mesa
- When
- September 17, 10:00 AM MST to 8:00 PM MST
- Where
- Fountain Hills/East Mesa forecast zone
- Reported by
- County Official
- Coordinates
- 33.349, -112.491 (the zone’s center; the record gives no point)
Excessive Heat, South Mountain/Ahwatukee
- When
- September 17, 10:00 AM MST to 8:00 PM MST
- Where
- South Mountain/Ahwatukee forecast zone
- Reported by
- County Official
- Coordinates
- 33.349, -112.491 (the zone’s center; the record gives no point)
Excessive Heat, Southeast Valley/Queen Creek
- When
- September 17, 10:00 AM MST to 8:00 PM MST
- Where
- Southeast Valley/Queen Creek forecast zone
- Reported by
- County Official
- Coordinates
- 33.349, -112.491 (the zone’s center; the record gives no point)
Excessive Heat, Yuma
- When
- September 17, 10:00 AM MST to 8:00 PM MST
- Where
- Yuma forecast zone
- Reported by
- County Official
- Coordinates
- 32.769, -113.906 (the zone’s center; the record gives no point)
What these are
- 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.
The same day elsewhere
- Flood in Washington, September 17 to 18, 2020
- Flood and Hail in Oregon, September 17 to 18, 2020
- Heavy Rain in Virginia, September 17 to 18, 2020
- Flash Flooding and Damaging Winds in South Carolina, September 17, 2020
- Tornadoes in South Carolina, September 17, 2020
- Tornadoes in North Carolina, September 17, 2020
- Tornado and Damaging Wind in Georgia, September 17, 2020
- Tornado and Damaging Wind in South Carolina, September 17, 2020
- Tornadoes in North Carolina, September 17 to 18, 2020
- Heavy Rain in North Carolina, September 17 to 18, 2020
- Excessive Heat in California, September 17 to 18, 2020
- Marine Thunderstorm Winds and Waterspout in South Atlantic Coastal Waters, September 17, 2020
More
Every storm in Arizona in 2020Every state in 2020This day in weather historyWarnings in Arizona, September 2020
Sources
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: 993432, 993433, 993434, 993435, 993436, 993437, 993438, 993439, 993440, 993441, 993442.