Alert archive / Arizona / Flash Flood Warnings in 2025

Flash Flood Warning 30, NWS Phoenix, AZ

September 3, 2025Gila County, Maricopa County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Sep 3, 2025, 3:49 PM MST for Gila County, Maricopa County, Arizona. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 3, 2025, 3:49 PM MST (22:49 UTC)
Expired: Sep 3, 2025, 6:12 PM MST
In force: 2 hr
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Gila County, AZ, Maricopa County, AZ

The radar

The Phoenix radar (KIWA), 32 km from the middle of the area, began a volume at 22:49 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Phoenix, AZ wrote its last area forecast discussion before this flash flood warning went out at Sep 3, 3:46 PM MST, 3 minutes earlier.

Area forecast discussion, Sep 3, 3:46 PM MST, 3 minutes before

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In the hours before

Special weather statement, Sep 3, 3:32 PM MST, 17 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
332 PM MST Wed Sep 3 2025

AZZ552-556-558-032315-
Tonto Basin AZ-Superior AZ-Pinal/Superstition Mountains AZ-
332 PM MST Wed Sep 3 2025

...STRONG THUNDERSTORMS WILL IMPACT GILA...MARICOPA AND PINAL
COUNTIES THROUGH 415 PM MST...

At 332 PM MST, Doppler radar was tracking a cluster of strong
thunderstorms near Top-Of-The-World, or near Superior, moving north
at 5 mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Superior, Top Of The World, Boyce Thompson Arboretum, and
Top-Of-The-World.

This includes the following highways...
US Highway 60 between mile markers 222 and 239.
AZ Route 177 between mile markers 165 and 167.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3326 11093 3323 11117 3345 11124 3352 11094
TIME...MOT...LOC 2232Z 171DEG 5KT 3332 11106

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

TW

The office that day

Everything else NWS Phoenix, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 2, 5:14 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	46 min
Sep 2, 7:03 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	57 min
Sep 3, 1:30 PM MST	Flood Watch	PSR	Gila, La Paz, Maricopa, Pinal, Yuma	35 hr
Sep 3, 3:32 PM MST	Special Weather Statement	PSR	Gila	43 min

Nearby

Flash Flood Warnings in Arizona, 2025 Every flash flood warning in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.