Flash Flood Warning 198, NWS Phoenix, AZ

Issued

Aug 17, 2021, 12:09 AM MST (07:09 UTC)

Expired

Aug 17, 2021, 7:47 AM MST

In force

8 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), 56 km from the middle of the area, began a volume at 07:11 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.

402 
WGUS55 KPSR 170709
FFWPSR
AZC013-021-171515-
/O.NEW.KPSR.FF.W.0198.210817T0709Z-210817T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
1209 AM MST Tue Aug 17 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 815 AM MST Tuesday.

* At 1209 AM MST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 0.5 and 1.5 inches of 
  rain have fallen. Additional rainfall amounts of 0.5 to 1 inch 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...
  Chandler, Casa Grande, Sun Lakes, Maricopa, Estrella Sailport, 
  Olberg, Bapchule, Freeman, Blackwater, Ak-Chin Village, Mobile, 
  Santan and Sacaton.

This includes the following highways...
	AZ Interstate 10 between mile markers 169 and 178.
	AZ Route 347 near mile marker 161...and
	between mile markers 164 and 172.
	AZ Interstate 8 between mile markers 141 and 150.
	AZ Route 87 between mile markers 142 and 151.
	AZ Route 238 between mile markers 19 and 28.

This includes the following streams and drainages...
  Queen Creek, West Prong Waterman Wash, Vekol Wash and Waterman 
  Wash.

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 3280 11226 3289 11236 3309 11242 3320 11234
      3321 11176 3313 11167 3310 11155 3296 11172
      3292 11206 3277 11200 3277 11205 3272 11205
      3272 11215 3268 11215 3268 11220

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

$$

Hirsch

024 
WGUS75 KPSR 171447
FFSPSR

Flash Flood Statement
National Weather Service Phoenix AZ
747 AM MST Tue Aug 17 2021

AZC013-021-171457-
/O.CAN.KPSR.FF.W.0198.000000T0000Z-210817T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Maricopa AZ-Pinal AZ-
747 AM MST Tue Aug 17 2021

...FLASH FLOOD WARNING IS CANCELLED 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.

LAT...LON 3280 11226 3289 11236 3309 11242 3320 11234
      3321 11176 3313 11167 3310 11155 3296 11172
      3292 11206 3277 11200 3277 11205 3272 11205
      3272 11215 3268 11215 3268 11220

$$

Hirsch

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.