Alert archive / Arizona / Flash Flood Warnings in 2025

Flash Flood Warning 61, NWS Phoenix, AZ

September 26, 2025Pinal County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Sep 26, 2025, 3:37 PM MST for Pinal County, Arizona. It was in force for 3 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 26, 2025, 3:37 PM MST (22:37 UTC)
Expired: Sep 26, 2025, 6:37 PM MST
In force: 3 hr
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Pinal County, AZ

The radar

The Phoenix radar (KIWA), 52 km from the middle of the area, began a volume at 22:39 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.

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 10.6 hours before the alert went out and 262 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 309 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 869 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 223 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.4

Open this sounding in Storm Lab

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 26, 1:31 PM MST, 2 hours 6 minutes earlier.

Area forecast discussion, Sep 26, 1:31 PM MST, 2 hours 6 minutes before

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In the hours before

Local storm report, Sep 26, 3:10 PM MST, 27 minutes before

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Local storm report, Sep 26, 3:13 PM MST, 24 minutes before

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Special weather statement, Sep 26, 3:15 PM MST, 22 minutes before

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Local storm report, Sep 26, 3:24 PM MST, 13 minutes before

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Local storm report, Sep 26, 3:32 PM MST, 5 minutes before

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Local storm report, Sep 26, 3:37 PM MST, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 25, 5:13 PM MST	Areal Flood Advisory	PSR	Gila, Maricopa	3 hr
Sep 25, 6:09 PM MST	Special Weather Statement	PSR	Gila	36 min
Sep 25, 6:24 PM MST	Special Weather Statement	PSR	Gila	36 min
Sep 26, 5:17 AM MST	Special Weather Statement	PSR	Gila	4 hr
Sep 26, 9:41 AM MST	Special Weather Statement	PSR	Maricopa	34 min
Sep 26, 9:47 AM MST	Special Weather Statement	PSR	Maricopa	28 min
Sep 26, 10:02 AM MST	Severe Thunderstorm Warning	PSR	Maricopa	28 min
Sep 26, 10:13 AM MST	Severe Thunderstorm Warning	PSR	Maricopa	32 min
Sep 26, 10:19 AM MST	Special Weather Statement	PSR	Maricopa	4 hr
Sep 26, 10:22 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	6 hr
Sep 26, 11:01 AM MST	Severe Thunderstorm Warning	PSR	Maricopa	29 min
Sep 26, 11:16 AM MST	Severe Thunderstorm Warning	PSR	Maricopa	29 min
Sep 26, 11:25 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	6 hr
Sep 26, 11:35 AM MST	Severe Thunderstorm Warning	PSR	Pinal	25 min
Sep 26, 11:47 AM MST	Severe Thunderstorm Warning	PSR	Pinal	28 min
Sep 26, 11:57 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	6 hr
Sep 26, 12:00 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	30 min
Sep 26, 12:21 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	24 min
Sep 26, 12:23 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	52 min
Sep 26, 12:31 PM MST	Dust Storm Warning	PSR	Maricopa, Pinal	44 min
Sep 26, 12:33 PM MST	Areal Flood Advisory	PSR	Pinal	3 hr
Sep 26, 12:38 PM MST	Severe Thunderstorm Warning	PSR	Gila, Maricopa, Pinal	52 min
Sep 26, 12:53 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa, Pinal	5 hr
Sep 26, 1:02 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	43 min
Sep 26, 1:19 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	41 min
Sep 26, 1:32 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	43 min
Sep 26, 1:38 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	37 min
Sep 26, 1:43 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	2 hr
Sep 26, 1:47 PM MST	Severe Thunderstorm Warning	PSR	Gila, Maricopa, Pinal	43 min
Sep 26, 2:15 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	45 min
Sep 26, 2:20 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	40 min
Sep 26, 2:37 PM MST	Special Weather Statement	PSR	Gila	38 min
Sep 26, 2:39 PM MST	Special Weather Statement	PSR	Maricopa	36 min
Sep 26, 2:45 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Sep 26, 3:15 PM MST	Special Weather Statement	PSR	Gila	45 min
Sep 26, 3:31 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	29 min
Sep 26, 3:39 PM MST	Special Weather Statement	PSR	Maricopa	36 min
Sep 26, 3:57 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	33 min
Sep 26, 4:17 PM MST	Special Weather Statement	PSR		28 min
Sep 26, 4:24 PM MST	Areal Flood Warning	PSR	Maricopa	3 hr
Sep 26, 4:29 PM MST	Special Weather Statement	PSR	Pinal	46 min
Sep 26, 4:55 PM MST	Areal Flood Warning	PSR	Maricopa	15 hr
Sep 26, 2:36 PM MST	Areal Flood Advisory	PSR	Riverside	3 hr
Sep 26, 4:02 PM MST	Areal Flood Advisory	PSR	Imperial, Riverside	3 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.