Flash Flood Warning 176, NWS Phoenix, AZ

Issued

Aug 14, 2021, 12:33 AM MST (07:33 UTC)

Expired

Aug 14, 2021, 4:45 AM MST

In force

4 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), 37 km from the middle of the area, began a volume at 07:33 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.

716 
WGUS55 KPSR 140733
FFWPSR
AZC013-021-141145-
/O.NEW.KPSR.FF.W.0176.210814T0733Z-210814T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
1233 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...
  Pinal County in southeastern Arizona...

* Until 445 AM MST.

* At 1233 AM MST, Doppler radar and rain gages indicated 
  thunderstorms producing heavy rain across the warned area. Between 
  1 and 2 inches of rain have fallen. Additional rainfall amounts up 
  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...
  Phoenix, Chandler, Sun Lakes, Maricopa, Bapchule, Estrella 
  Sailport, Olberg, Tumbleweed Park, Firebird Lake, Ak-Chin Village, 
  Santan and Sacaton.

This includes the following highways...
	AZ Interstate 10 between mile markers 164 and 173.
	AZ Route 202 between mile markers 48 and 50.
	AZ Route 347 between mile markers 172 and 181.
	AZ Route 87 between mile markers 154 and 163.
	AZ Route 238 between mile markers 35 and 44.

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 3310 11227 3321 11225 3327 11219 3332 11215
      3332 11205 3326 11206 3327 11195 3331 11185
      3320 11178 3314 11176 3306 11186 3303 11206
      3306 11220

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

$$

Iniguez

421 
WGUS75 KPSR 140915 RRB
FFSPSR

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

AZC013-021-141145-
/O.CON.KPSR.FF.W.0176.000000T0000Z-210814T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Maricopa AZ-Pinal AZ-
215 AM MST Sat Aug 14 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 AM MST EARLY THIS 
MORNING FOR MARICOPA AND PINAL COUNTIES...

At 215 AM MST, Doppler radar and automated rain gauges 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 and automated gauges.

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

Some locations that will experience flash flooding include...
  Phoenix, Chandler, Sun Lakes, Maricopa, Ak-Chin Village, Santan 
  and Sacaton.

This includes the following highways...
	AZ Interstate 10 between mile markers 164 and 173.
	AZ Route 202 between mile markers 48 and 50.
	AZ Route 347 between mile markers 172 and 181.
	AZ Route 87 between mile markers 154 and 163.
	AZ Route 238 between mile markers 35 and 44.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3310 11227 3321 11225 3327 11219 3332 11215
      3332 11205 3326 11206 3327 11195 3331 11185
      3320 11178 3314 11176 3306 11186 3303 11206
      3306 11220

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

$$

Iniguez

250 
WGUS75 KPSR 141140
FFSPSR

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

AZC013-021-141150-
/O.EXP.KPSR.FF.W.0176.000000T0000Z-210814T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Maricopa AZ-Pinal AZ-
440 AM MST Sat Aug 14 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 445 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 3310 11227 3321 11225 3327 11219 3332 11215
      3332 11205 3326 11206 3327 11195 3331 11185
      3320 11178 3314 11176 3306 11186 3303 11206
      3306 11220

$$

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.