Alert archive / Arizona / Flash Flood Warnings in 2003

Flash Flood Warning 25, NWS Tucson, AZ

July 29, 2003Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 29, 2003, 6:00 PM MST for Pima County, Pinal County, Arizona. It was in force for . 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 29, 2003, 6:00 PM MST (01:00 UTC)
Expired: Jul 29, 2003, 6:00 PM MST
In force
Issued by: NWS Tucson, AZ
Area: Counties, with a storm outline in the text

Counties Pima County, AZ, Pinal County, AZ

The radar

The Tucson radar (KEMX), 73 km from the middle of the area, began a volume at 01:01 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, 1.0 hours before the alert went out and 39 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 40 J/kg
Mixed-layer CIN: -200 J/kg
Mixed-layer LCL: 1662 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 38 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 300057
FFWTWC
AZC019-021-300200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
600 PM MST TUE JUL 29 2003

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EXTREME NORTHEASTERN PIMA COUNTY IN ARIZONA
    THIS INCLUDES THE CITIES OF...ORO VALLEY...MARANA
  SOUTHEASTERN PINAL COUNTY IN ARIZONA
    THIS INCLUDES THE CITIES OF ORACLE AND SAN MANUEL.

* UNTIL 700 PM MST

* AT 555 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN OVER SAN MANUEL...OR ABOUT 20 MILES NORTHEAST OF ORO VALLEY...
  MOVING WEST AT 20 MPH.

* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE NEAR...
   ORACLE AT 605 PM MST
   ORO VALLEY AT 620 PM MST

A STRONG THUNDERSTORM THAT IS CAPABLE OF PRODUCING VERY HEAVY RAIN 
IN A BRIEF PERIOD OF TIME WILL MOVE WEST ALONG THE PIMA COUNTY AND 
PINAL COUNTY BORDER. THIS STORM WILL LIKELY PRODUCE RAINFALL 
AMOUNTS IN EXCESS OF ONE INCH PER HOUR WITH SOME AREAS LIKELY TO 
RECEIVE AMOUNTS NEAR TWO INCHES IN AN HOUR OR LESS. 

THIS WARNING REPLACES THE PREVIOUSLY ISSUED FLASH FLOOD WARNING FOR 
PORTIONS OF PIMA COUNTY.

LAT...LON 3236 11052 3270 11053 3289 11141 3230 11132

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 5:33 PM MST	Severe Thunderstorm Warning	TWC	Pima	57 min
Jul 29, 5:34 PM MST	Severe Thunderstorm Warning	TWC	Pima	56 min
Jul 29, 6:02 PM MST	Severe Thunderstorm Warning	TWC	Graham, Pinal	28 min
Jul 29, 6:37 PM MST	Severe Thunderstorm Warning	TWC	Pima	53 min
Jul 30, 4:17 PM MST	Flash Flood Warning	TWC	Pinal

Nearby

Flash Flood Warnings in Arizona, 2003 Every 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.