Arizona, 2018

Excessive Heat and Heat in Arizona, September 14 to 17, 2018

September 14 to 17, 2018 · NWS PSR · 17 events in 15 counties and zones

High pressure over the region allowed for temperatures to reach excessive heat warning conditions. Eight direct heat/excessive heat fatalities were reported by the Maricopa County Department of Public Health.

Where it happened

Every event with a place to put it; 17 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

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The toll

Deaths
8
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
17

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.

High pressure over the region allowed for temperatures to reach excessive heat warning conditions. Eight direct heat/excessive heat fatalities were reported by the Maricopa County Department of Public Health.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

16 excessive heat, 1 heat. Local standard time, as filed.

Excessive Heat, Central Phoenix

When
September 14, 10:00 AM MST to September 15, 8:00 PM MST
Where
Central Phoenix forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
33.349, -112.491 (the zone’s center; the record gives no point)

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

Excessive Heat, Buckeye/Avondale

When
September 14, 10:00 AM MST to September 15, 8:00 PM MST
Where
Buckeye/Avondale forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
33.349, -112.491 (the zone’s center; the record gives no point)

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

Excessive Heat, Scottsdale/Paradise Valley

When
September 14, 10:00 AM MST to September 15, 8:00 PM MST
Where
Scottsdale/Paradise Valley forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
33.349, -112.491 (the zone’s center; the record gives no point)

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

Excessive Heat, Northwest Valley

When
September 14, 10:00 AM MST to September 15, 8:00 PM MST
Where
Northwest Valley forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
33.349, -112.491 (the zone’s center; the record gives no point)

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

Excessive Heat, North Phoenix/Glendale

When
September 14, 10:00 AM MST to September 15, 8:00 PM MST
Where
North Phoenix/Glendale forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
33.349, -112.491 (the zone’s center; the record gives no point)

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

Excessive Heat, Tonto Basin

When
September 14, 10:00 AM MST to September 15, 8:00 PM MST
Where
Tonto Basin forecast zone
Reported by
County Official
Coordinates
33.800, -110.812 (the zone’s center; the record gives no point)

Excessive Heat, Cave Creek/New River

When
September 14, 10:00 AM MST to September 15, 8:00 PM MST
Where
Cave Creek/New River 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 14, 10:00 AM MST to September 15, 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, East Valley

When
September 14, 10:00 AM MST to September 15, 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 14, 10:00 AM MST to September 15, 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 14, 10:00 AM MST to September 15, 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 14, 10:00 AM MST to September 15, 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, Superior

When
September 14, 10:00 AM MST to September 15, 8:00 PM MST
Where
Superior forecast zone
Reported by
County Official
Coordinates
32.904, -111.345 (the zone’s center; the record gives no point)

Excessive Heat, Northwest Pinal County

When
September 14, 10:00 AM MST to September 15, 8:00 PM MST
Where
Northwest Pinal County forecast zone
Reported by
County Official
Coordinates
32.904, -111.345 (the zone’s center; the record gives no point)

Excessive Heat, Apache Junction/Gold Canyon

When
September 14, 10:00 AM MST to September 15, 8:00 PM MST
Where
Apache Junction/Gold Canyon forecast zone
Reported by
County Official
Coordinates
32.904, -111.345 (the zone’s center; the record gives no point)

Heat, East Valley

When
September 16, 10:00 AM MST to 8:00 PM MST
Where
East Valley forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
33.349, -112.491 (the zone’s center; the record gives no point)

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

Excessive Heat, Central Phoenix

When
September 17, 10:00 AM MST to 8:00 PM MST
Where
Central Phoenix forecast zone
Deaths
2 direct, 0 indirect
Reported by
County Official
Coordinates
33.349, -112.491 (the zone’s center; the record gives no point)

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

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Excessive Heat, Central Phoenix2018-09-14UnknownDirect
Excessive Heat, Buckeye/Avondale2018-09-14UnknownDirect
Excessive Heat, Scottsdale/Paradise Valley2018-09-14UnknownDirect
Excessive Heat, Northwest Valley2018-09-14UnknownDirect
Excessive Heat, North Phoenix/Glendale2018-09-14UnknownDirect
Heat, East Valley2018-09-16UnknownDirect
Excessive Heat, Central Phoenix2018-09-17UnknownDirect
Excessive Heat, Central Phoenix2018-09-17UnknownDirect

What these are

Excessive Heat
Heat at or above the local excessive heat warning criteria, or heat that caused deaths.
Heat
Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Arizona in 2018Every state in 2018This day in weather historyWarnings in Arizona, September 2018

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: 867295, 867296, 867297, 867298, 867299, 867302, 867305, 867306, 867309, 867310, 867311, 867312, 867313, 867314, 867315, 867300, 867301.