Arizona, 2024

Heat in Arizona, September 10 to 12, 2024

September 10 to 12, 2024 · NWS TWC · 2 events in 2 counties and zones

Hot temperatures 5 to 8 degrees above normal were experienced across much of southeast Arizona September 10-12. The Pima County Medical Examiner confirmed that heat was the primary cause of death for two individuals, one in Sierra Vista and one in Sells.

Where it happened

Every event with a place to put it; 2 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
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The toll

Deaths
2
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

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 TWC wrote it up.

Hot temperatures 5 to 8 degrees above normal were experienced across much of southeast Arizona September 10-12. The Pima County Medical Examiner confirmed that heat was the primary cause of death for two individuals, one in Sierra Vista and one in Sells.

The radar

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

Open the radar archive at this moment

Event by event

2 heat. Local standard time, as filed.

Heat, Tohono O Odham Nation

When
September 10, 10:00 AM MST to 8:00 PM MST
Where
Tohono O Odham Nation forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
32.501, -111.567 (the zone’s center; the record gives no point)

Hot temperatures about 6 to 8 degrees above normal were experienced in the Tucson Metro Area September 10, causing the Moderate Heat Risk category to be reached. The Sells RAWS topped out at 106 degrees on September 10. The Pima County Medical Examiner confirmed that heat was the primary factor in the death in one individual.

Heat, Upper San Pedro River Valley

When
September 12, 10:00 AM MST to 8:00 PM MST
Where
Upper San Pedro River Valley forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
32.109, -110.569 (the zone’s center; the record gives no point)

Hot temperatures about 3 to 6 degrees above normal were experienced in Sierra Vista on September 12, causing the Moderate Heat Risk category to be reached. The Fort Huachuca ASOS topped out at 94 degrees on September 12. The Pima County Medical Examiner confirmed that heat was the primary factor in the death in one individual.

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
Heat, Tohono O Odham Nation2024-09-1054FemaleOutside/Open AreasDirect
Heat, Upper San Pedro River Valley2024-09-1284MaleOutside/Open AreasDirect

What these are

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 2024Every state in 2024This day in weather historyWarnings in Arizona, September 2024

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: 1217125, 1217126.