Flash Flood Warning 6, NWS Phoenix, AZ

Issued

Jul 29, 2001, 9:10 PM MST (04:10 UTC)

Expired

Jul 29, 2001, 10:00 PM MST

In force

50 min

Issued by

NWS Phoenix, AZ

Area

Whole counties; the outline is the Mesonet’s reconstruction

Counties Gila County, AZ, Maricopa County, AZ

The Phoenix radar (KIWA), 58 km from the middle of the area, began a volume at 04:09 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.

000 
FNUS55 KPSR 300412
FFWPSR
AZC007-013-300600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
910 PM MST SUN JUL 29 2001

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA
  EXTREME NORTHEASTERN MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA

* UNTIL 1100 PM MST

* AT 910 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY
  HEAVY RAIN HAD OCCURRED OR WAS FALLING IN WEST CENTRAL GILA
  COUNTY AND EXTREME NORTHEAST MARICOPA COUNTY...INCLUDING THE
  SALT RIVER LAKES RECREATIONAL AREA...SUNFLOWER AND PUNKIN CENTER.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS...ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
PHOENIX.

LAT...LON 3351 11106 3368 11116 3380 11110 3399 11145
          3349 11161

NWS Phoenix, AZ wrote its last area forecast discussion before this flash flood warning went out at Jul 29, 9:10 PM MST, 0 minutes earlier.

AZZ020>028-CAZ030>033-301045-

SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PHOENIX AZ
910 PM MST SUN JUL 29 2001

.SYNOPSIS...
THE RIDGE OF HIGH PRESSURE OVER CENTRAL AND NORTHERN ARIZONA...MOVES
SLOWLY TO THE EAST TONIGHT.  A VERY MOIST MONSOON FLOW...IS ANCHORED
OVER SOUTH CENTRAL AND SOUTHWEST ARIZONA.  SLIGHTLY DRIER SOUTHWEST
WINDS...PREVAIL OVER SOUTHEAST CALIFORNIA.  TONIGHT THERE IS A
CHANCE FOR BRIEF HEAVY RAINFALL...TO THE EAST AND SOUTHEAST OF
PHOENIX.  THE CHANCE FOR SHOWERS AND THUNDERSTORMS CONTINUE UNTIL
MID WEEK...THEN A TROUGH OF LOW PRESSURE OVER CALIFORNIA...WILL
BRING DRIER AIR INTO THE REGION BY THE END OF THE WEEK.

.DISCUSSION...
AIRMASS OVER SOUTH CENTRAL AZ VERY MOIST AND HAS AND IS CONTINUING
AT THIS TIME TO PRODUCE HEAVY RAIN AND AREAS OF FLASH FLOODING OVER
PORTIONS OF SOUTHERN GILA COUNTY. ACTIVITY SLOWLY SHIFTING WEST.
CURRENT FORECAST FOR TONIGHT LOOKS GOOD AS SHOWERS/THUNDERSTORMS
SHOULD CONTINUE WELL INTO TONIGHT AND MONDAY MORNING. NEW ETA/NGM
KEEP UPPER HIGH CENTERED EAST OF AZ WITH LIGHT SOUTHERLY FLOW NEXT
COUPLE DAYS. BOTH MODELS ALSO KEEP 700 MB VERY MOIST THROUGH 48
HOURS OVER SOUTH CENTRAL AZ. BOTH MODELS ALSO SHOW A VORTMAX OVER
NORTHWEST MEXICO BUT HANDLE IT A LITTLE DIFFERENT. ETA BRINGS A
PIECE OF IT UP THROUGH SOUTH CENTRAL AZ MONDAY WHERE AS NGM KEEPS IT
NEARLY STATIONARY...ALTHOUGH DOES SHOW SOME ELONGATION INTO SOUTH
CENTRAL AZ. IN EITHER CASE...THIS MAY GIVE A LITTLE MORE DYNAMICS TO
THE ALREADY VERY MOIST AIRMASS FOR CONTINUED CHANCE OF
SHOWERS/THUNDERSTORMS MONDAY OVER SOUTH CENTRAL AZ. MOISTURE SLIDES
SLOWLY WEST MONDAY TO GIVE SW AZ AND PART OF SE CA A SLIGHT CHANCE
FOR SHOWERS MONDAY/MONDAY NIGHT. JOSHUA TREE SHOULD REMAIN FAR
ENOUGH NORTH TO REMAIN UNDER THE WEST COAST TROUGH'S SOUTHWESTERLY
FLOW FOR MOSTLY SUNNY TO PARTLY CLOUDY SKIES MONDAY. DKS

Flash Flood Warnings in Arizona, 2001Every flash flood warning in 2001

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.