Alert archive / Arizona / Flash Flood Warnings in 2003

Flash Flood Warning 20, NWS Tucson, AZ

July 28, 2003Pima County, Santa Cruz County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 28, 2003, 4:45 PM MST for Pima County, Santa Cruz County, Arizona. It was in force for 30 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 28, 2003, 4:45 PM MST (23:45 UTC)
Expired
Jul 28, 2003, 5:15 PM MST
In force
30 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 23:47 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, 11.8 hours before the alert went out and 37 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 2003-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 371 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 2003-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
371 J/kg
Mixed-layer CIN
-169 J/kg
Mixed-layer LCL
1621 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
101 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 282347
FFWTWC
AZC019-023-290115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
445 PM MST MON JUL 28 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
  NORTHERN SANTA CRUZ COUNTY IN ARIZONA

* UNTIL 615 PM MST

* AT 445 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED            
  THUNDERSTORMS WITH VERY HEAVY RAIN FROM TUBAC NORTH ALONG I-19 TO
  GREEN VALLEY AND SAHAURITA.

LAT...LON 3208 11132 3152 11136 3156 11090 3173 11047
          3208 11047

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 5:55 PM MSTFlash Flood WarningTWCSanta Cruz30 min
Jul 27, 6:30 PM MSTSevere Thunderstorm WarningTWCPima60 min
Jul 27, 7:33 PM MSTSevere Thunderstorm WarningTWCPima42 min
Jul 27, 7:55 PM MSTSevere Thunderstorm WarningTWCPima35 min
Jul 27, 8:31 PM MSTSevere Thunderstorm WarningTWCPima44 min
Jul 28, 3:37 PM MSTSevere Thunderstorm WarningTWCPima23 min
Jul 28, 3:56 PM MSTSevere Thunderstorm WarningTWCSanta Cruz34 min
Jul 28, 4:55 PM MSTSevere Thunderstorm WarningTWCPima50 min

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.