Arizona, 2024

Flash Flood and Damaging Winds in Arizona, June 20, 2024

June 20, 2024 · NWS TWC · 3 events in 2 counties and zones

The first active convective day of the 2024 monsoon produced several thunderstorms that resulted in strong winds and flash flooding. Notably, a 61 MPH wind gust occurred at Pioneer Airfield at Fort Huachuca and separately, Flash Flooding and severe wind gusts were observed in the town of Pima in Graham County.

Where it happened

Every event with a place to put it. 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
0
Injuries
0
Property damage
$11,000
Crop damage
None recorded
Events
3

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.

The first active convective day of the 2024 monsoon produced several thunderstorms that resulted in strong winds and flash flooding. Notably, a 61 MPH wind gust occurred at Pioneer Airfield at Fort Huachuca and separately, Flash Flooding and severe wind gusts were observed in the town of Pima in Graham County.

The radar

The Tucson radar (KEMX), 136 km away, was scanning. The volume nearest the first event began at 01:27 UTC.

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Event by event

2 thunderstorm wind, 1 flash flood. Local standard time, as filed.

Flash Flood, Graham

When
June 20, 6:30 PM MST to 11:00 PM MST
Where
Graham County, 0.97 mi NE of Glenbar to 2.25 mi ESE of Bryce
Cause
Heavy Rain
Property damage
$1,000
Reported by
Law Enforcement
Coordinates
32.931, -109.860

Several rounds of thunderstorms moved over the Pima area from 6 PM until after 10 PM in the evening. This caused extensive street flooding and flash flooding with water running curb to curb on numerous streets.

Thunderstorm Wind, Cochise

When
June 20, 8:40 PM MST
Where
Cochise County, 4.93 mi WNW of (Fhu)ft Huachuca Afb
Measured
53 kt (61 mph) measured gust
Reported by
ASOS
Coordinates
31.603, -110.429

Measured wind gust to 61 mph at Pioneer Airfield.

Thunderstorm Wind, Graham

When
June 20, 9:45 PM MST to 9:50 PM MST
Where
Graham County, Pima
Measured
56 kt (64 mph) estimated gust
Property damage
$10,000
Reported by
Newspaper
Coordinates
32.880, -109.820

Numerous large trees downed along with a railroad crossing arm damaged due to severe wind gusts in Pima, AZ.

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

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, June 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: 1176716, 1176704, 1176727.