Alert archive / Arizona / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 69, NWS Phoenix, AZ

September 12, 2023Gila County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Sep 12, 2023, 3:10 PM MST for Gila County, Arizona. It was in force for 50 min. 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 12, 2023, 3:10 PM MST (22:10 UTC)
Expired: Sep 12, 2023, 4:00 PM MST
In force: 50 min
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Gila County, AZ

The radar

The Flagstaff radar (KFSX), 93 km from the middle of the area, began a volume at 22:09 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 severe thunderstorm 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 severe thunderstorm warning went out at Sep 12, 2:28 PM MST, 42 minutes earlier.

Area forecast discussion, Sep 12, 2:28 PM MST, 42 minutes before

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In the hours before

Special weather statement, Sep 12, 1:59 PM MST, 1 hour 11 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
159 PM MST Tue Sep 12 2023

AZZ553-554-559-122145-
Sonoran Desert Natl Monument AZ-Northwest Pinal County AZ-
West Pinal County AZ-
159 PM MST Tue Sep 12 2023

...A strong thunderstorm will impact portions of Maricopa and Pinal
Counties through 245 PM MST...

At 159 PM MST, Doppler radar was tracking a strong thunderstorm 10
miles east of Freeman, or 23 miles west of Casa Grande, moving
northeast at 10 mph.

HAZARD...Winds in excess of 40 mph and penny 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...
Maricopa, Freeman, Stanfield, and Ak-Chin Village.

This includes the following highways...
AZ Interstate 8 between mile markers 142 and 172.
AZ Route 347 between mile markers 161 and 173.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3287 11232 3311 11198 3279 11175 3279 11187
      3277 11189 3276 11205 3273 11205 3272 11214
      3269 11216
TIME...MOT...LOC 2059Z 241DEG 7KT 3279 11213

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

JL

Special weather statement, Sep 12, 2:26 PM MST, 44 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 12, 1:59 PM MST	Special Weather Statement	PSR		46 min
Sep 12, 2:14 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	46 min
Sep 12, 2:26 PM MST	Special Weather Statement	PSR	Gila	49 min
Sep 12, 3:08 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	52 min
Sep 12, 3:09 PM MST	Areal Flood Advisory	PSR	Pinal	2 hr
Sep 12, 3:47 PM MST	Special Weather Statement	PSR	Maricopa, Yuma	5 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2023 Every severe thunderstorm warning in 2023

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.