Arizona, 2025

Heat in Arizona, May 21, 2025

May 21, 2025 · NWS PSR · 1 event in 1 county or zone

A female hiker hiking the McDowell Sonoran Preserve in North Scottsdale was found deceased at the trail. A report filed by the Maricopa County Medical Examiner a month later determined the cause of death was due to environmental heat exposure.

Where it happened

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The toll

Deaths
1
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

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.

A female hiker hiking the McDowell Sonoran Preserve in North Scottsdale was found deceased at the trail. A report filed by the Maricopa County Medical Examiner a month later determined the cause of death was due to environmental heat exposure. In terms of the overall weather observed at the time of the incident, skies were clear with a temperature of near 100 degrees according to an observation from nearby weather station.

The radar

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

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Event by event

1 heat. Local standard time, as filed.

Heat, Cave Creek/New River

When
May 21, 12:00 PM MST
Where
Cave Creek/New River forecast zone
Deaths
1 direct, 0 indirect
Reported by
Broadcast Media
Coordinates
33.349, -112.491 (the zone’s center; the record gives no point)

A female hiker hiking the McDowell Sonoran Preserve was found deceased at the trail. A report filed by the Maricopa County Medical Examiner a month later determined the cause of death was due to environmental heat exposure.

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, Cave Creek/New River2025-05-2131FemaleOutside/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 2025Every state in 2025This day in weather historyWarnings in Arizona, May 2025

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 2026-09-24. Each event’s entry at NCEI: 1261503.