Alert archive / Arizona / Flash Flood Warnings in 2003

Flash Flood Warning 76, NWS Tucson, AZ

September 7, 2003Pima County, Santa Cruz County, Arizona

NWS Tucson, AZ issued this flash flood warning at Sep 7, 2003, 2:33 PM MST for Pima County, Santa Cruz County, Arizona. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 7, 2003, 2:33 PM MST (21:33 UTC)
Expired
Sep 7, 2003, 3:30 PM MST
In force
57 min
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text

Counties Pima County, AZ, Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 33 km from the middle of the area, began a volume at 21:34 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.

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 9.6 hours before the alert went out and 43 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-pSkew-T log-p diagram, Tuscon, AZ at 12:00Z on 2003-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 792 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 12:00Z on 2003-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
792 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
1502 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS55 KTWC 072135
FFWTWC
AZC019-023-072330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
233 PM MST SUN SEP 7 2003

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN PIMA COUNTY IN ARIZONA
    THIS INCLUDES THE CITY OF GREEN VALLEY
  NORTH CENTRAL SANTA CRUZ COUNTY IN ARIZONA 
    THIS INCLUDES THE CITY OF AMADO

* UNTIL 430 PM MST

* AT 224 PM MST...AUTOMATED GAGE AT ELEPHANT HEAD INDICATED VERY     
  HEAVY RAIN 8 MILES SOUTH OF GREEN VALLEY...MOVING EAST AT 5 MPH. 
  RADAR RAINFALL ESTIMATES INDICATED 2 TO 3 INCHES IN ONE HOUR.

MOST FLASH FLOOD DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
FLOWING WATER...EVEN A SMALL ONE...ON FOOT. DO NOT ALLOW CHILDREN TO
PLAY NEAR DICTHES OR STORM DRAINS.

LAT...LON 3188 11109 3164 11109 3164 11074 3188 11074

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 5:26 PM MSTFlash Flood WarningTWCPinal34 min
Sep 6, 5:37 PM MSTFlash Flood WarningTWCCochise

Nearby

Flash Flood Warnings in Arizona, 2003Every flash flood warning in 2003

Sources

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.