Flash Flood Warning 174, NWS Phoenix, AZ

Issued

Aug 13, 2021, 11:31 PM MST (06:31 UTC)

Expired

Aug 14, 2021, 4:30 AM MST

In force

5 hr

Issued by

NWS Phoenix, AZ

Area

Storm-based polygon

Damage threat

Considerable

Flood severity

None

Counties Maricopa County, AZ, Pinal County, AZ

The Phoenix radar (KIWA), 25 km from the middle of the area, began a volume at 06:30 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

051 
WGUS55 KPSR 140631
FFWPSR
AZC013-021-141130-
/O.NEW.KPSR.FF.W.0174.210814T0631Z-210814T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
1131 PM MST Fri Aug 13 2021

The National Weather Service in Phoenix has issued a

* Flash Flood Warning for...
  Maricopa County in south central Arizona...
  Pinal County in southeastern Arizona...

* Until 430 AM MST.

* At 1131 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to 1.5 inches of rain have 
  fallen. Additional rainfall amounts up to 1.5 inches are possible 
  in the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Mesa, Chandler, Gilbert, Florence, Superior, Queen Creek, Florence 
  Junction, Queen Valley, Magma, San Tan Valley, San Tan Mountain 
  Park, Boyce Thompson Arboretum, Phoenix Mesa Gateway Airport, 
  Chandler Heights, Seville, San Tan Village Mall, Gilbert City 
  Hall, Chandler City Hall and Higley.

This includes the following streams and drainages...
  Queen Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3332 11185 3338 11171 3318 11147 3329 11136
      3336 11133 3340 11136 3339 11121 3340 11112
      3321 11101 3318 11105 3308 11119 3304 11127
      3306 11151 3311 11173

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

Rogers

227 
WGUS75 KPSR 140902
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
202 AM MST Sat Aug 14 2021

AZC013-021-141130-
/O.CON.KPSR.FF.W.0174.000000T0000Z-210814T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Maricopa AZ-Pinal AZ-
202 AM MST Sat Aug 14 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 AM MST EARLY THIS 
MORNING FOR MARICOPA AND PINAL COUNTIES...

At 202 AM MST, Doppler radar indicated between 1 and 2 inches of 
rain have fallen. Flash flooding is ongoing or expected to begin 
shortly.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Radar.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Mesa, Chandler, Gilbert, Florence, Superior, Queen Creek, Florence 
  Junction, Queen Valley, Magma, and San Tan Valley.

This includes the following streams and drainages...
  Queen Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3332 11185 3338 11171 3318 11147 3329 11136
      3336 11133 3340 11136 3339 11121 3340 11112
      3321 11101 3318 11105 3308 11119 3304 11127
      3306 11151 3311 11173

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

Iniguez

509 
WGUS75 KPSR 141125
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
425 AM MST Sat Aug 14 2021

AZC013-021-141135-
/O.EXP.KPSR.FF.W.0174.000000T0000Z-210814T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Maricopa AZ-Pinal AZ-
425 AM MST Sat Aug 14 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 430 AM MST EARLY THIS MORNING 
FOR MARICOPA AND PINAL COUNTIES...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

A Flash Flood Watch remains in effect until 500 PM MST Sunday for a 
portion of south central Arizona.

LAT...LON 3332 11185 3338 11171 3318 11147 3329 11136
      3336 11133 3340 11136 3339 11121 3340 11112
      3321 11101 3318 11105 3308 11119 3304 11127
      3306 11151 3311 11173

$$

CK

Flash Flood Warnings in Arizona, 2021Every flash flood warning in 2021

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.