Flash Flood Warning 72, NWS Phoenix, AZ

Issued

Sep 7, 2012, 12:52 PM MST (19:52 UTC)

Expired

Sep 7, 2012, 2:45 PM MST

In force

113 min

Issued by

NWS Phoenix, AZ

Area

Storm-based polygon

Flood severity

None

County Maricopa County, AZ

The Phoenix radar (KIWA), 104 km from the middle of the area, began a volume at 19:53 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.

267 
WGUS55 KPSR 071952
FFWPSR
AZC013-072145-
/O.NEW.KPSR.FF.W.0072.120907T1952Z-120907T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
1252 PM MST FRI SEP 7 2012

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA...THIS       
  INCLUDES THE SAND TANK WASH WHICH FLOWS NORTHWEST TOWARD GILA      
  BEND...

* UNTIL 245 PM MST

* AT 1240 PM MST...THUNDERSTORMS HAD PRODUCED LOCALLY HEAVY RAIN
  JUST SOUTHEAST OF GILA BEND DURING THE PAST HOUR. RADAR INDICATES
  THAT UP TO ONE AND ONE HALF INCHES OF RAIN FELL OVER THE SAND TANK 
  WASH SOUTHEAST OF GILA BEND SINCE NOON. AN ALERT RAIN GAUGE IN THE
  SAND TANK WASH RECORDED 1.5 INCHES OF RAIN DURING THAT TIME. THE
  SAND TANK WASH WILL EXPERIENCE HEAVY STREAM FLOW...WITH WATER      
  FLOWING TOWARD THE NORTHWEST TOWARD INTERSTATE 8 AND GILA BEND.  

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GILA BEND
  AUXILIARY FIELD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT PEOPLE ALONG THE BANKS OF WASHES AND
CREEKS SHOULD MOVE TO HIGHER GROUND IMMEDIATELY. NORMALLY DRY WASHES
AND STREAMS WILL SUDDENLY HAVE RUNNING WATER AND MAKE UNBRIDGED
CROSSINGS IMPASSABLE. STREETS...UNDERPASSES...AND LOW SPOTS WILL
BECOME INUNDATED MAKING DRIVING HAZARDOUS IN THE WARNED AREA.

&&

LAT...LON 3279 11267 3286 11273 3298 11275 3292 11254
      3277 11257

$$

DG

690 
WGUS75 KPSR 072130
FFSPSR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
230 PM MST FRI SEP 7 2012

AZC013-072145-
/O.CON.KPSR.FF.W.0072.000000T0000Z-120907T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARICOPA AZ-
230 PM MST FRI SEP 7 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 PM MST FOR
SOUTHWESTERN MARICOPA COUNTY...

AT 222 PM MST...HEAVY STREAMFLOW WAS OCCURRING THROUGH THE SAND TANK 
WASH NEAR GILA BEND. ACCORDING TO INFORMATION PROVIDED BY THE FLOOD 
CONTROL DISTRICT OF MARICOPA COUNTY...STREAMFLOW MEASURED BY A GAUGE 
LOCATED NEAR INTERSTATE 8 WAS THE SECOND GREATEST ON RECORD...AND 
DATA FOR THAT GAUGE EXIST SINCE 2001. THIS RUNOFF WAS TRIGGERED BY 
THUNDERSTORMS WHICH PRODUCED ONE AND ONE HALF INCHES OF RAIN JUST 
SOUTHEAST OF GILA BEND BETWEEN NOON AND 1 PM THIS AFTERNOON. 
ELEVATED FLOW WILL PERSIST THROUGH THE SAND TANK WASH FOR A COUPLE 
MORE HOURS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT PEOPLE ALONG THE BANKS OF WASHES AND
CREEKS SHOULD MOVE TO HIGHER GROUND IMMEDIATELY. NORMALLY DRY WASHES
AND STREAMS WILL SUDDENLY HAVE RUNNING WATER AND MAKE UNBRIDGED
CROSSINGS IMPASSABLE. STREETS...UNDERPASSES...AND LOW SPOTS WILL
BECOME INUNDATED MAKING DRIVING HAZARDOUS IN THE WARNED AREA.

&&

LAT...LON 3279 11267 3286 11273 3298 11275 3292 11254
      3277 11257

$$

DG

Flash Flood Warnings in Arizona, 2012Every flash flood warning in 2012

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.