Alert archive / Arizona / Flash Flood Warnings in 2022

Flash Flood Warning 273, NWS Phoenix, AZ

September 9, 2022Maricopa County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Sep 9, 2022, 7:32 PM MST for Maricopa 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 9, 2022, 7:32 PM MST (02:32 UTC)
Expired: Sep 9, 2022, 10:45 PM MST
In force: 3 hr
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Maricopa County, AZ

The radar

The Phoenix radar (KIWA), 77 km from the middle of the area, began a volume at 02:34 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 9, 2:50 PM MST, 4 hours 42 minutes earlier.

Area forecast discussion, Sep 9, 2:50 PM MST, 4 hours 42 minutes before

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In the hours before

Local storm report, Sep 9, 2:04 PM MST, 5 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
204 PM MST FRI SEP 9 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0151 PM     FLASH FLOOD      1 W DIXIELAND           32.79N 115.80W
09/09/2022                   IMPERIAL           CA   LAW ENFORCEMENT

            CHP REPORTS VEHICLE WASHED OFF EVAN HAWES
            HIGHWAY.

&&

PI

Local storm report, Sep 9, 2:07 PM MST, 5 hours 25 minutes before

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  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Special weather statement, Sep 9, 3:10 PM MST, 4 hours 22 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
310 PM MST Fri Sep 9 2022

AZZ550-551-553-554-559-092300-
South Mountain/Ahwatukee AZ-Sonoran Desert Natl Monument AZ-
Northwest Pinal County AZ-Southeast Valley/Queen Creek AZ-
West Pinal County AZ-
310 PM MST Fri Sep 9 2022

...Strong thunderstorms will impact portions of Maricopa and Pinal
Counties through 400 PM MST...

At 309 PM MST, Doppler radar was tracking strong thunderstorms
extending from 12 miles southeast of Maricopa to 7 miles north of
Casa Grande to Randolph. Movement was northwest at 20 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs, blow around
         unsecured objects, and generate blowing dust.

Locations impacted include...
Chandler, Casa Grande, Coolidge, Sun Lakes, Maricopa, Queen Creek,
Arizona City, La Palma, San Tan Valley, Bapchule, Estrella Sailport,
Olberg, Arizola, San Tan Mountain Park, Randolph, Blackwater,
Chandler Heights, Toltec, Magma and Coolidge Airport.

This includes the following highways...
AZ Interstate 10 between mile markers 167 and 204.
AZ Interstate 8 between mile markers 150 and 178.
AZ Route 87 between mile markers 124 and 160.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3309 11237 3323 11206 3322 11153 3296 11137
      3273 11167 3273 11174 3280 11178 3279 11187
      3277 11189 3276 11205 3273 11205 3272 11209
TIME...MOT...LOC 2209Z 154DEG 16KT 3290 11193 3300 11175 3292 11148

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

SDB

Special weather statement, Sep 9, 4:00 PM MST, 3 hours 32 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
400 PM MST Fri Sep 9 2022

AZZ538>540-550-553-554-559-092345-
South Mountain/Ahwatukee AZ-Sonoran Desert Natl Monument AZ-
Buckeye/Avondale AZ-Northwest Pinal County AZ-Tonopah Desert AZ-
Gila Bend AZ-West Pinal County AZ-
400 PM MST Fri Sep 9 2022

...Strong thunderstorms will impact portions of Maricopa and Pinal
Counties through 445 PM MST...

At 359 PM MST, Doppler radar was tracking strong thunderstorms
extending from Casa Grande to near Estrella Sailport to near Palo
Verde. Movement was northwest at 25 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs, blow around
         unsecured objects, and generate blowing dust.

Locations impacted include...
Avondale, Goodyear, Buckeye, Casa Grande, Gila Bend, Tonopah,
Maricopa, Estrella, Arizona City, Palo Verde, Big Horn, Cotton
Center, Liberty, Bapchule, Estrella Sailport, Olberg, Arizola,
Estrella Mountain Park, Palo Verde Nuclear Generation Station and
Wintersburg.

This includes the following highways...
AZ Interstate 10 between mile markers 79 and 118, and between mile
markers 168 and 204.
AZ Interstate 8 between mile markers 111 and 178.
AZ Route 87 between mile markers 152 and 157.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3288 11279 3357 11321 3346 11256 3332 11225
      3317 11177 3281 11155 3273 11167 3273 11174
      3280 11178 3276 11205 3272 11207 3271 11215
TIME...MOT...LOC 2259Z 134DEG 23KT 3290 11175 3306 11222 3331 11269

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

SDB

Special weather statement, Sep 9, 4:51 PM MST, 2 hours 41 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
451 PM MST Fri Sep 9 2022

AZZ533-534-537>540-543-544-546-548-550-551-553-554-559-100030-
Sonoran Desert Natl Monument AZ-Aguila Valley AZ-
Northwest Pinal County AZ-Southeast Valley/Queen Creek AZ-
Tonopah Desert AZ-East Valley AZ-West Pinal County AZ-
North Phoenix/Glendale AZ-South Mountain/Ahwatukee AZ-
Scottsdale/Paradise Valley AZ-Buckeye/Avondale AZ-Gila Bend AZ-
Central Phoenix AZ-Central La Paz AZ-Northwest Valley AZ-
451 PM MST Fri Sep 9 2022

...Strong thunderstorms will impact portions of northeastern La Paz,
northeastern Yuma, Maricopa and Pinal Counties through 530 PM MST...

At 451 PM MST, Doppler radar was tracking strong thunderstorms
extending from 8 miles south of Gladden to Estrella Mountain Park to
Arizola. Movement was northwest at 25 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs, blow around
         unsecured objects, and generate blowing dust.

Locations impacted include...
Phoenix, Mesa, Chandler, Glendale, Gilbert, Tempe, Surprise,
Avondale, Goodyear, Buckeye, Casa Grande, El Mirage, Florence,
Coolidge, Tolleson, Youngtown, Gila Bend, Waddell, Sun City and
Wittmann.

This includes the following highways...
AZ Interstate 10 between mile markers 57 and 204.
AZ Interstate 17 between mile markers 195 and 206.
AZ Interstate 8 between mile markers 108 and 178.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 3404 11333 3400 11333 3400 11289 3347 11198
      3300 11130 3273 11167 3273 11174 3280 11178
      3276 11205 3273 11206 3283 11277 3356 11355
      3407 11390
TIME...MOT...LOC 2351Z 123DEG 21KT 3378 11335 3331 11237 3283 11173

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

SDB

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 9, 5:01 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz, Maricopa	4 hr
Sep 9, 5:30 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	6 hr
Sep 9, 5:37 PM MST	Dust Storm Advisory	PSR	Maricopa	38 min
Sep 9, 5:43 PM MST	Special Weather Statement	PSR	Maricopa	47 min
Sep 9, 5:54 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	36 min
Sep 9, 6:00 PM MST	Special Weather Statement	PSR	La Paz	45 min
Sep 9, 6:30 PM MST	Special Weather Statement	PSR	Maricopa	45 min
Sep 9, 6:42 PM MST	Flash Flood Warning Considerable damage threat	PSR	Pinal	4 hr
Sep 9, 6:45 PM MST	Special Weather Statement	PSR	Maricopa	45 min
Sep 9, 7:59 PM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	3 hr
Sep 9, 8:41 PM MST	Special Weather Statement	PSR	Maricopa	49 min
Sep 9, 10:59 PM MST	Areal Flood Advisory	PSR	Pinal	3 hr
Sep 9, 11:37 PM MST	Areal Flood Warning	PSR	Maricopa	4 hr
Sep 9, 11:52 PM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	3 hr
Sep 10, 3:46 AM MST	Areal Flood Warning	PSR	Maricopa	3 hr
Sep 10, 9:11 AM MST	Flash Flood Warning Considerable damage threat	PSR	Imperial, Riverside	3 hr
Sep 10, 3:12 PM MST	Areal Flood Advisory	PSR	Imperial, Riverside	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.