Alert archive / Arizona / Flash Flood Warnings in 2004

Flash Flood Warning 26, NWS Tucson, AZ

August 4, 2004Graham County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 4, 2004, 3:25 PM MST for Graham County, Arizona. It was in force for 2 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
Aug 4, 2004, 3:25 PM MST (22:25 UTC)
Expired
Aug 4, 2004, 5:30 PM MST
In force
2 hr
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text

County Graham County, AZ

The radar

The Tucson radar (KEMX), 120 km from the middle of the area, began a volume at 22:25 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, 10.4 hours before the alert went out and 116 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 2004-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 265 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 2004-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -23 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
265 J/kg
Mixed-layer CIN
-212 J/kg
Mixed-layer LCL
1904 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-23 m²/s²
0-3 km storm-relative helicity
53 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 042225
FFWTWC
AZC009-050130-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
325 PM MST WED AUG 4 2004

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL GRAHAM COUNTY IN ARIZONA
    THIS INCLUDES THE CITIES OF PIMA AND THATCHER

* UNTIL 630 PM MST

* AT 320 PM MST...NATIONAL WEATHER SERVICE RADAR CONTINUED TO         
  INDICATE HEAVY RAIN OVER THE FIRE BURN AREAS ON MT GRAHAM...OR     
  10 MILES SOUTHWEST OF SAFFORD.  THE STORMS OVER MT GRAHAM HAVE     
  BEEN NEARLY STATIONARY. RADAR RAINFALL ESTIMATES OF UP TO 3 INCHES 
  OF RAIN HAS FALLEN OVER THE BURN AREA...INCLUDING THE FRYE AND 
  COTTONWOOD BASINS.

THIS IS A CONTINUATION OF THE FLASH FLOOD WARNING FOR THE SAME AREA 
ISSUED EARLIER THIS AFTERNOON.   

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 DITCHES OR STORM DRAINS.

LAT...LON 3265 11001 3265 10969 3295 10969 3295 11002

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 5:03 PM MSTSevere Thunderstorm WarningTWCCochise57 min
Aug 3, 5:48 PM MSTFlash Flood WarningTWCPima, Pinal57 min
Aug 4, 12:33 PM MSTFlash Flood WarningTWCGraham117 min

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; radar from the NEXRAD Level II archive.