Flash Flood Warning 178, NWS Phoenix, AZ

Issued

Aug 14, 2021, 1:04 AM MST (08:04 UTC)

Expired

Aug 14, 2021, 5:15 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, Maricopa County, AZ, Yuma County, AZ

The Yuma radar (KYUX), 142 km from the middle of the area, began a volume at 08:04 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.

666 
WGUS55 KPSR 140804
FFWPSR
AZC012-013-027-141215-
/O.NEW.KPSR.FF.W.0178.210814T0804Z-210814T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
104 AM MST Sat Aug 14 2021

The National Weather Service in Phoenix has issued a

* Flash Flood Warning for...
  Maricopa County in south central Arizona...
  Northeastern Yuma County in southwestern Arizona...
  East Central La Paz County in west central Arizona...

* Until 515 AM MST.

* At 104 AM MST, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain across the warned area. Up to 2 
  inches of rain have fallen. Additional rainfall amounts up to 2 
  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 and automated gauges.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses. This
           includes Columbus Wash, 4th of July Wash, Deadman
           Wash, Red Raven Wash, Hoodoo Wash, and others within
           the warned area.

* Some locations that will experience flash flooding include...
  Sundad, Hyder and Palm Canyon.

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.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3343 11396 3348 11391 3355 11369 3357 11351
      3354 11336 3348 11322 3346 11308 3344 11299
      3330 11281 3324 11285 3310 11294 3305 11300
      3296 11332 3295 11345 3296 11349 3300 11377
      3317 11404 3331 11406 3342 11397

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

$$

Iniguez

369 
WGUS75 KPSR 140915
FFSPSR

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

AZC012-013-027-141215-
/O.CON.KPSR.FF.W.0178.000000T0000Z-210814T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
La Paz AZ-Maricopa AZ-Yuma AZ-
215 AM MST Sat Aug 14 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 AM MST EARLY THIS 
MORNING FOR MARICOPA, NORTHEASTERN YUMA AND EAST CENTRAL LA PAZ 
COUNTIES...

At 215 AM MST, Doppler radar indicated up to 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. This
         includes Columbus Wash, 4th of July Wash, Deadman Wash,
         Red Raven Wash, Hoodoo Wash, and others within the
         warned area.

Some locations that will experience flash flooding include...
  Sundad, Hyder and Palm Canyon.

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.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3343 11396 3348 11391 3355 11369 3357 11351
      3354 11336 3348 11322 3346 11308 3344 11299
      3330 11281 3324 11285 3310 11294 3305 11300
      3296 11332 3295 11345 3296 11349 3300 11377
      3317 11404 3331 11406 3342 11397

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

$$

Iniguez

020 
WGUS75 KPSR 141210
FFSPSR

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

AZC012-013-027-141220-
/O.EXP.KPSR.FF.W.0178.000000T0000Z-210814T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
La Paz AZ-Maricopa AZ-Yuma AZ-
510 AM MST Sat Aug 14 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 515 AM MST EARLY THIS MORNING 
FOR MARICOPA, NORTHEASTERN YUMA AND EAST CENTRAL LA PAZ 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 3343 11396 3348 11391 3355 11369 3357 11351
      3354 11336 3348 11322 3346 11308 3344 11299
      3330 11281 3324 11285 3310 11294 3305 11300
      3296 11332 3295 11345 3296 11349 3300 11377
      3317 11404 3331 11406 3342 11397

$$

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.