Alert archive / Arizona / Flash Flood Warnings in 2004

Flash Flood Warning 13, NWS Tucson, AZ

July 19, 2004Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 19, 2004, 6:24 PM MST for Pima County, Arizona. It was in force for 6 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
Jul 19, 2004, 6:24 PM MST (01:24 UTC)
Expired
Jul 19, 2004, 6:30 PM MST
In force
6 min
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text

County Pima County, AZ

The radar

The Phoenix radar (KIWA), 123 km from the middle of the area, began a volume at 01:25 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 00:00Z, 1.4 hours before the alert went out and 94 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 2004-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 622 joules per kilogram.LCLEL10008507005003002001001 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 2004-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 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
622 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
3319 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
42 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 200129
FFWTWC
AZC019-200230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
624 PM MST MON JUL 19 2004

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL PIMA COUNTY IN ARIZONA

* UNTIL 730 PM MST

* AT 620 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED SEVERAL 
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN NORTH OF SELLS. STORMS ARE 
  MOVING TO THE NORTH AROUND 10 MPH.

DOPPLER RADAR INDICATED THAT ONE TO TWO INCHES...WITH LOCAL AMOUNTS 
OF 3 TO 4 INCHES...MAY HAVE FALLEN IN A MOSTLY REMOTE AREA NORTH OF 
SELLS IN THE TOHONO OODHAM NATION. RADAR INDICATED THAT THE HEAVIEST 
RAINFALL MAY HAVE OCCURRED NEAR COMOBABI AND VAYA CHIN.

SMALL STREAMS...SECONDARY ROADS...AND NORMALLY DRY WASHES WILL FLOOD
QUICKLY. DO NOT DRIVE INTO FLOODED AREAS. MOVE TO HIGHER GROUND.

LAT...LON 3201 11202 3202 11164 3249 11165 3247 11216

$$

JRG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 7:16 PM MSTFlash Flood WarningTWCPima74 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.