Alert archive / Arizona / Flash Flood Warnings in 2003

Flash Flood Warning 63, NWS Tucson, AZ

August 25, 2003Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 25, 2003, 11:55 PM MST for Pima County, Arizona. It was in force for 65 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
Aug 25, 2003, 11:55 PM MST (06:55 UTC)
Expired
Aug 26, 2003, 1:00 AM MST
In force
65 min
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text

County Pima County, AZ

The radar

The Tucson radar (KEMX), 62 km from the middle of the area, began a volume at 06:56 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, 6.9 hours before the alert went out and 25 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 2003-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1036 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 2003-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
1036 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
2586 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

000 
WGUS55 KTWC 260700
FFWTWC
AZC019-260900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
1155 PM MST MON AUG 25 2003

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN PIMA COUNTY IN ARIZONA
    THIS INCLUDES AREAS NEAR THE CANADA DEL ORO WASH

* UNTIL 200 AM MST TUESDAY

* AT 1150 PM MST...LIGHT RAIN CONTINUED ACROSS NORTHEAST PIMA COUNTY.
  WITH HEAVY FLOW CONTINUING IN THE CDO FROM THE EXTREMELY HEAVY
  RAINFALL EARLIER IN THE EVENING...THE WARNING HAS BEEN EXTENDED
  UNTIL 2 AM.

FLASH FLOODING IS PARTICULARLY DANGEROUS AT NIGHT BECAUSE IT IS VERY
HARD TO SEE RISING WATER. IF WATER COVERS THE ROAD...TURN AROUND AND
TAKE ANOTHER ROUTE.

LAT...LON 3229 11106 3236 11076 3251 11061 3252 11108

MEYER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 8:05 PM MSTFlash Flood WarningTWCPinal25 min
Aug 25, 9:10 PM MSTFlash Flood WarningTWCPima, Pinal20 min
Aug 25, 9:17 PM MSTSevere Thunderstorm WarningTWCPima, Pinal73 min
Aug 25, 10:20 PM MSTFlash Flood WarningTWCPima, Pinal40 min
Aug 26, 1:57 PM MSTSevere Thunderstorm WarningTWCPima48 min
Aug 26, 3:35 PM MSTFlash Flood WarningTWCPima55 min
Aug 26, 4:07 PM MSTSevere Thunderstorm WarningTWCPima38 min
Aug 26, 4:16 PM MSTFlash Flood WarningTWCPinal29 min
Aug 26, 4:16 PM MSTSevere Thunderstorm WarningTWCPinal44 min
Aug 26, 4:41 PM MSTSevere Thunderstorm WarningTWCPima49 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.