Alert archive / Arizona / Flash Flood Warnings in 2005

Flash Flood Warning 49, NWS Phoenix, AZ

September 3, 2005Maricopa County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Sep 3, 2005, 3:50 PM MST for Maricopa County, Arizona. It was in force for 55 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Sep 3, 2005, 3:50 PM MST (22:50 UTC)
Expired: Sep 3, 2005, 4:45 PM MST
In force: 55 min
Issued by: NWS Phoenix, AZ
Area: Counties, with a storm outline in the text

County Maricopa County, AZ

The radar

The Phoenix radar (KIWA), 79 km from the middle of the area, began a volume at 22:51 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.

What was reported inside it

Time	Report	Where	Remark
Sep 3, 4:38 PM MST	FLASH FLOOD	11 Ne Cave Creek, AZ	SEVEN SPRINGS WASH STREAMFLOW GAUGE INDICATED FLOW HEIGHT INCREASED FROM ZERO FEET AT 418 PM TO 8.5 FEET AT 438 PM. FLOW PEAKED BETWEEN 10 AND 11 FEET BETWEEN 510 PM AND 530 PM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Phoenix, AZ (KPSR), launched 12:00Z, 10.8 hours before the alert went out and 59 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 132 J/kg
Mixed-layer CIN: -253 J/kg
Mixed-layer LCL: 2416 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 43 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS55 KPSR 032254
FFWPSR
AZC013-040045-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
350 PM MST SAT SEP 3 2005

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA
  INCLUDING SEVEN SPRINGS RECREATIONAL AREA

* UNTIL 545 PM MST

* AT 345 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN FROM A THUNDERSTORM OVER THE WARNED AREA. RAIN     
  GAGES AND RADAR INDICATED RAINFALL RATES OF 2 INCHES PER HOUR IN   
  THE VICININTY OF THE CAVE CREEK COMPLEX BURN AREA. 

* AREAS AFFECTED INCLUDE THE SEVEN SPRINGS WASH...THE CAVE CREEK WASH
  AND THE NEW RIVER WASH...OVER AND JUST SOUTH OF THE CAVE CREEK     
  COMPLEX BURN AREA.

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.

LAT...LON 3387 11207 3388 11172 3410 11173 3409 11208

$$

CJB

The office that day

Everything else NWS Phoenix, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 3, 2:02 PM MST	Severe Thunderstorm Warning	PSR	La Paz	58 min

Nearby

Flash Flood Warnings in Arizona, 2005 Every flash flood warning in 2005

Sources

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.