Alert archive / Arizona / Flash Flood Warnings in 2004

Flash Flood Warning 10, NWS Tucson, AZ

July 18, 2004Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 18, 2004, 6:43 PM MST for Pima County, Pinal County, Arizona. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 18, 2004, 6:43 PM MST (01:43 UTC)
Expired
Jul 18, 2004, 9:30 PM MST
In force
3 hr
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text

Counties Pima County, AZ, Pinal County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 1.7 hours before the alert went out and 28 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 00:00Z on 2004-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 249 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 00:00Z on 2004-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.1939Sfc1 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
249 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
3401 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
40 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 KTWC 190148
FFWTWC
AZC019-021-190545-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
643 PM MST SUN JUL 18 2004

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN PIMA COUNTY IN ARIZONA
    THIS INCLUDES THE CITY OF ORO VALLEY
  EXTREME SOUTHEASTERN PINAL COUNTY IN ARIZONA

* UNTIL 1030 PM MST

* AT 634 PM MST...AUTOMATED GAGES INDICATED VERY HEAVY RAIN IN THE   
  ASPEN BURN AREA THAT DRAINS INTO THE CANYON DEL ORO WASH. ONE 
  AUTOMATED GAGE RECORDED 1.50 INCHES OF RAIN IN 15 MINUTES.

EXPECT TO SEE A 2 FOOT RISE ON THE CDO AT RANCHO SOLANO BY AROUND 
730 PM. THE CDO WILL RISE ABOUT A FOOT AND A HALF AT GOLDER RANCH BY 
AROUND 830 PM MST. THIS WALL OF WATER WILL CONTINUE DOWN TOWARD THE 
LOW WATER CROSSINGS AT OVERTON ROAD AND LA CHOLLA BOULEVARD WITH AN 
ESTIMATED ARRIVAL TIME AROUND 930 PM.

NEVER DRIVE INTO A FLOODED AREA. THE ROAD AHEAD MAY BE UNDERMINED OR 
WASHED AWAY. ABANDON VEHICLES CAUGHT IN RISING WATER IMMEDIATELY.

LAT...LON 3234 11105 3230 11097 3255 11080 3254 11097

$$

JRG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 3:31 PM MSTFlash Flood WarningTWCSanta Cruz59 min
Jul 19, 4:34 PM MSTFlash Flood WarningTWCPima

Nearby

Flash Flood Warnings in Arizona, 2004Every flash flood warning in 2004

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.