Alert archive / Arizona / Flash Flood Warnings in 2022

Flash Flood Warning 316, NWS Phoenix, AZ

October 3, 2022Pinal County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Oct 3, 2022, 5:18 PM MST for Pinal County, Arizona. It was in force for 4 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: Oct 3, 2022, 5:18 PM MST (00:18 UTC)
Expired: Oct 3, 2022, 9:30 PM MST
In force: 4 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 00:17 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 Oct 3, 4:51 PM MST, 27 minutes earlier.

Area forecast discussion, Oct 3, 4:51 PM MST, 27 minutes before

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In the hours before

Special weather statement, Oct 3, 4:11 PM MST, 1 hour 7 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
411 PM MST Mon Oct 3 2022

AZZ531-533-536-538-539-040000-
Gila River Valley AZ-Kofa AZ-Tonopah Desert AZ-Gila Bend AZ-
Central La Paz AZ-
411 PM MST Mon Oct 3 2022

...A strong thunderstorm will impact portions of east central La Paz,
northeastern Yuma and Maricopa Counties through 500 PM MST...

At 410 PM MST, Doppler radar was tracking strong thunderstorms 10
miles southeast of Sundad, or 26 miles west of Gila Bend. This storm
was nearly stationary.

HAZARD...Wind gusts of 50 to 55 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...
Gila Bend, Sentinel, Paloma, Sundad and Hyder.

This includes the following highways...
AZ Interstate 10 between mile markers 73 and 87.
AZ Interstate 8 between mile markers 71 and 76.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3281 11349 3344 11382 3361 11309 3295 11281
TIME...MOT...LOC 2310Z 261DEG 4KT 3306 11313

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...55 MPH

SDB

Special weather statement, Oct 3, 4:14 PM MST, 1 hour 4 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
414 PM MST Mon Oct 3 2022

AZZ530-533-CAZ569-570-040000-
Parker Valley AZ-Central La Paz AZ-Palo Verde Valley CA-
Chuckwalla Valley CA-
414 PM MST Mon Oct 3 2022

...A strong thunderstorm will impact portions of northwestern La Paz,
San Bernardino and Riverside Counties through 500 PM MST/500 PM
PDT/...

At 413 PM MST/413 PM PDT/, Doppler radar was tracking a strong
thunderstorm 12 miles southwest of Big River, or 14 miles southwest
of Parker. This storm was nearly stationary.

HAZARD...Winds in excess of 40 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...
Parker, Midland and Poston.

This includes the following highways...
AZ Route 95 between mile markers 118 and 142.
CA Route 95 between mile markers 13 and 36.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3380 11417 3371 11494 3403 11508 3408 11467
      3408 11444 3412 11438 3414 11423
TIME...MOT...LOC 2313Z 261DEG 3KT 3398 11445

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

SDB

Special weather statement, Oct 3, 4:22 PM MST, 56 minutes before

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Local storm report, Oct 3, 4:47 PM MST, 31 minutes before

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Local storm report, Oct 3, 4:52 PM MST, 26 minutes before

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Local storm report, Oct 3, 4:57 PM MST, 21 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
Oct 3, 5:05 PM MST	Dust Storm Warning	PSR	Maricopa, Pinal	40 min
Oct 3, 5:34 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	26 min
Oct 3, 5:42 PM MST	Special Weather Statement	PSR	Maricopa	33 min
Oct 3, 5:44 PM MST	Special Weather Statement	PSR	Pinal	46 min
Oct 3, 5:57 PM MST	Special Weather Statement	PSR	Yuma	48 min
Oct 3, 6:04 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	56 min
Oct 3, 6:27 PM MST	Dust Storm Warning	PSR	Maricopa, Pinal	48 min
Oct 3, 6:30 PM MST	Areal Flood Advisory	PSR	Maricopa	3 hr
Oct 4, 4:00 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila, Pinal	3 hr

Nearby

Flash Flood Warnings in Arizona, 2022 Every flash flood warning in 2022

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.