Alert archive / Arizona / Flash Flood Warnings in 2022

Flash Flood Warning 185, NWS Phoenix, AZ

August 18, 2022La Paz County, Arizona; Riverside County, California

NWS Phoenix, AZ issued this flash flood warning at Aug 18, 2022, 8:27 PM MST for La Paz County, Arizona; Riverside County, California. 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
Aug 18, 2022, 8:27 PM MST (03:27 UTC)
Expired
Aug 19, 2022, 12:30 AM MST
In force
4 hr
Issued by
NWS Phoenix, AZ
Area
Storm-based polygon
Damage threat
Considerable
Flood severity
None

Counties La Paz County, AZ, Riverside County, CA

The radar

The Yuma radar (KYUX), 141 km from the middle of the area, began a volume at 03:26 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 Aug 18, 4:54 PM MST, 3 hours 33 minutes earlier.

Area forecast discussion, Aug 18, 4:54 PM MST, 3 hours 33 minutes before
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In the hours before

Special weather statement, Aug 18, 6:09 PM MST, 2 hours 18 minutes before
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Special weather statement, Aug 18, 6:30 PM MST, 1 hour 57 minutes before
Special Weather Statement
National Weather Service Phoenix AZ
630 PM MST Thu Aug 18 2022

AZZ537-540-542>544-546-548>553-555-190215-
Fountain Hills/East Mesa AZ-Northwest Pinal County AZ-
Southeast Valley/Queen Creek AZ-East Valley AZ-
Apache Junction/Gold Canyon AZ-Superior AZ-North Phoenix/Glendale AZ-
South Mountain/Ahwatukee AZ-Scottsdale/Paradise Valley AZ-
Buckeye/Avondale AZ-Central Phoenix AZ-Deer Valley AZ-
Northwest Valley AZ-
630 PM MST Thu Aug 18 2022

...Strong thunderstorms will impact portions of Maricopa and Pinal
Counties through 715 PM MST...

At 630 PM MST, Doppler radar was tracking outflow winds from strong
thunderstorms along a line extending from North Mountain Park to
Mesa Riverview Mall to Superstition Springs Mall to near San Tan
Valley to near Florence. Movement was west at 20 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Phoenix, Mesa, Chandler, Glendale, Scottsdale, Gilbert, Tempe,
Peoria, Surprise, Avondale, Casa Grande, Apache Junction, El Mirage,
Florence, Paradise Valley, Coolidge, Tolleson, Youngtown, Waddell and
Laveen.

This includes the following highways...
AZ Interstate 10 between mile markers 129 and 195.
AZ Interstate 17 between mile markers 195 and 220.
AZ Route 51 between mile markers 1 and 15.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3352 11175 3348 11157 3333 11133 3311 11114
      3290 11145 3278 11159 3321 11204 3333 11225
      3361 11248 3377 11208
TIME...MOT...LOC 0130Z 069DEG 16KT 3357 11208 3344 11187 3339 11167
3320 11155 3299 11132

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
Special weather statement, Aug 18, 7:07 PM MST, 1 hour 20 minutes before
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Special weather statement, Aug 18, 7:09 PM MST, 1 hour 18 minutes before
Special Weather Statement
National Weather Service Phoenix AZ
709 PM MST Thu Aug 18 2022

AZZ531-533-536-538-539-190300-
Gila River Valley AZ-Kofa AZ-Tonopah Desert AZ-Gila Bend AZ-
Central La Paz AZ-
709 PM MST Thu Aug 18 2022

...Strong thunderstorms will impact portions of east central La Paz,
northeastern Yuma and Maricopa Counties through 800 PM MST...

At 709 PM MST, Doppler radar was tracking strong thunderstorms along
a line extending from 10 miles south of Vicksburg Junction to 11
miles northwest of Sundad to 15 miles northwest of Gila Bend.
Movement was south at 30 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Gila Bend, Vicksburg Junction, Sentinel, Paloma, Vicksburg, Palo
Verde Nuclear Generation Station, Sundad, Palm Canyon and Hyder.

This includes the following highways...
AZ Interstate 10 between mile markers 37 and 75.
AZ Interstate 8 between mile markers 84 and 114.
US Highway 60 between mile markers 39 and 51.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3328 11426 3286 11344 3281 11276 3334 11272
      3358 11332 3379 11380
TIME...MOT...LOC 0209Z 355DEG 25KT 3358 11372 3328 11339 3304 11294

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
Local storm report, Aug 18, 7:53 PM MST, 34 minutes before
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Special weather statement, Aug 18, 8:21 PM MST, 6 minutes before
Special Weather Statement
National Weather Service Phoenix AZ
821 PM MST Thu Aug 18 2022

AZZ537-538-540>544-546-559-190400-
Sonoran Desert Natl Monument AZ-Scottsdale/Paradise Valley AZ-
Buckeye/Avondale AZ-Cave Creek/New River AZ-Tonopah Desert AZ-
Central Phoenix AZ-Deer Valley AZ-Northwest Valley AZ-
North Phoenix/Glendale AZ-
821 PM MST Thu Aug 18 2022

...A strong thunderstorm will impact portions of Maricopa County
through 900 PM MST...

At 819 PM MST, Doppler radar was tracking clusters of strong
thunderstorms over Glendale and west parts of the Phoenix metro.
These storms were nearly stationary.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Phoenix, Glendale, Peoria, Surprise, Avondale, Goodyear, Buckeye, El
Mirage, Tolleson, Youngtown, Laveen, Sun City, Litchfield Park, Palo
Verde and Papago Park.

This includes the following highways...
AZ Interstate 10 between mile markers 101 and 150.
AZ Interstate 17 between mile markers 195 and 221.
AZ Route 51 between mile markers 1 and 15.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3379 11207 3349 11185 3318 11267 3345 11290
TIME...MOT...LOC 0319Z 095DEG 4KT 3355 11221

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 5:15 PM MSTSevere Thunderstorm WarningPSRMaricopa45 min
Aug 18, 5:18 PM MSTSevere Thunderstorm WarningPSRMaricopa21 min
Aug 18, 5:19 PM MSTSpecial Weather StatementPSR41 min
Aug 18, 5:39 PM MSTSevere Thunderstorm WarningPSRMaricopa14 min
Aug 18, 5:43 PM MSTSpecial Weather StatementPSR47 min
Aug 18, 6:09 PM MSTSpecial Weather StatementPSR51 min
Aug 18, 6:19 PM MSTFlash Flood Warning Considerable damage threatPSRMaricopa4 hr
Aug 18, 6:20 PM MSTFlash Flood Warning Considerable damage threatPSRMaricopa4 hr
Aug 18, 6:23 PM MSTDust Storm AdvisoryPSRMaricopa, Pinal67 min
Aug 18, 6:24 PM MSTSevere Thunderstorm WarningPSRLa Paz25 min
Aug 18, 6:30 PM MSTSpecial Weather StatementPSR45 min
Aug 18, 6:32 PM MSTSevere Thunderstorm WarningPSRMaricopa, Yuma43 min
Aug 18, 6:35 PM MSTSevere Thunderstorm WarningPSRMaricopa, Pinal25 min
Aug 18, 6:37 PM MSTSevere Thunderstorm WarningPSRMaricopa23 min
Aug 18, 6:40 PM MSTFlash Flood Warning Considerable damage threatPSRLa Paz, Maricopa4 hr
Aug 18, 6:46 PM MSTFlash Flood Warning Considerable damage threatPSRMaricopa4 hr
Aug 18, 6:52 PM MSTSevere Thunderstorm WarningPSRMaricopa23 min
Aug 18, 6:58 PM MSTFlash Flood Warning Considerable damage threatPSRMaricopa3 hr
Aug 18, 7:07 PM MSTSpecial Weather StatementPSRLa Paz53 min
Aug 18, 7:09 PM MSTSpecial Weather StatementPSR51 min
Aug 18, 7:41 PM MSTFlash Flood WarningPSRMaricopa3 hr
Aug 18, 7:42 PM MSTSevere Thunderstorm WarningPSRLa Paz48 min
Aug 18, 7:52 PM MSTFlash Flood Warning Considerable damage threatPSRLa Paz4 hr
Aug 18, 7:57 PM MSTFlash Flood Warning Considerable damage threatPSRLa Paz, Maricopa, Yuma3 hr
Aug 18, 7:58 PM MSTFlash Flood Warning Considerable damage threatPSRMaricopa, Yuma4 hr
Aug 18, 8:09 PM MSTFlash Flood WarningPSRMaricopa3 hr
Aug 18, 8:21 PM MSTSpecial Weather StatementPSRMaricopa39 min
Aug 18, 8:26 PM MSTSevere Thunderstorm WarningPSRLa Paz32 min
Aug 18, 8:32 PM MSTDust Storm WarningPSRLa Paz, Yuma88 min
Aug 18, 8:43 PM MSTSevere Thunderstorm WarningPSRMaricopa32 min
Aug 18, 8:45 PM MSTFlash Flood WarningPSRMaricopa4 hr
Aug 18, 8:46 PM MSTFlash Flood WarningPSRMaricopa3 hr
Aug 18, 8:56 PM MSTFlash Flood Warning Considerable damage threatPSRMaricopa4 hr
Aug 18, 9:00 PM MSTFlash Flood Warning Considerable damage threatPSRMaricopa, Yuma4 hr
Aug 18, 9:30 PM MSTDust Storm WarningPSRYuma60 min
Aug 18, 9:34 PM MSTFlash Flood Warning Considerable damage threatPSRYuma4 hr
Aug 18, 9:49 PM MSTFlash Flood Warning Considerable damage threatPSRMaricopa4 hr
Aug 18, 10:12 PM MSTSevere Thunderstorm WarningPSRLa Paz, Yuma33 min
Aug 18, 10:41 PM MSTSpecial Weather StatementPSR49 min
Aug 19, 1:57 AM MSTAreal Flood AdvisoryPSRGila3 hr
Aug 19, 11:17 AM MSTSpecial Weather StatementPSRGila43 min
Aug 19, 1:32 PM MSTSpecial Weather StatementPSRPinal43 min
Aug 19, 1:40 PM MSTSpecial Weather StatementPSRPinal50 min
Aug 19, 2:03 PM MSTSpecial Weather StatementPSR42 min
Aug 19, 2:14 PM MSTSpecial Weather StatementPSRPinal46 min
Aug 19, 2:31 PM MSTFlash Flood Warning Considerable damage threatPSRPinal119 min
Aug 19, 2:35 PM MSTSevere Thunderstorm WarningPSRMaricopa, Pinal28 min
Aug 19, 2:46 PM MSTDust Storm AdvisoryPSRMaricopa, Pinal29 min
Aug 19, 2:54 PM MSTSpecial Weather StatementPSRPinal51 min
Aug 19, 3:02 PM MSTSevere Thunderstorm WarningPSRMaricopa, Pinal28 min
Aug 19, 3:28 PM MSTDust Storm AdvisoryPSRMaricopa, Pinal47 min
Aug 19, 3:29 PM MSTFlash Flood Warning Considerable damage threatPSRPinal3 hr
Aug 19, 3:43 PM MSTFlash Flood Warning Considerable damage threatPSRMaricopa, Pinal3 hr
Aug 19, 3:48 PM MSTSevere Thunderstorm WarningPSRMaricopa42 min
Aug 19, 3:50 PM MSTSpecial Weather StatementPSR40 min
Aug 19, 3:58 PM MSTSpecial Weather StatementPSR47 min
Aug 19, 4:01 PM MSTDust Storm AdvisoryPSRMaricopa, Pinal59 min
Aug 19, 4:18 PM MSTSpecial Weather StatementPSR42 min
Aug 19, 4:42 PM MSTFlash Flood Warning Considerable damage threatPSRMaricopa, Pinal5 hr
Aug 19, 4:50 PM MSTFlash Flood Warning Considerable damage threatPSRMaricopa4 hr
Aug 19, 4:59 PM MSTSpecial Weather StatementPSR46 min
Aug 18, 11:25 PM MSTFlash Flood Warning Considerable damage threatPSRImperial4 hr

Nearby

Flash Flood Warnings in Arizona, 2022Flash Flood Warnings in California, 2022Every 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.