Alert archive / Arizona / Flash Flood Warnings in 1996

Flash Flood Warning 34, NWS Tucson, AZ

July 25, 1996Pinal County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 25, 1996, 8:45 PM MST for Pinal County, Arizona. It was in force for 75 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 25, 1996, 8:45 PM MST (03:45 UTC)
Expired: Jul 25, 1996, 10:00 PM MST
In force: 75 min
Issued by: NWS Tucson, AZ
Area: Whole counties

County Pinal County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 3.8 hours before the alert went out and 92 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: 488 J/kg
Mixed-layer CIN: -257 J/kg
Mixed-layer LCL: 2309 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUS 260348
FFWTUS
AZC021-260445-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON ARIZONA
845 PM MST THU JUL 25 1996
 
THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  1000 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL ARIZONA
 
   ...EASTERN PINAL COUNTY
 
AT 840 PM A SPOTTER NEAR WINKELMAN REPORTED FLOODING IN THE AREA...WITH
DEER CREEK OVER ITS BANKS. TOWNS AFFECTED BY THE FLASH FLOOD WARNING IN
EASTERN PINAL COUNTY INCLUDE WINKELMAN AND KEARNY.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDG8ES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
 
MEYER

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tucson, AZ wrote its last area forecast discussion before this flash flood warning went out at Jul 25, 8:34 PM MST, 11 minutes earlier.

Area forecast discussion, Jul 25, 8:34 PM MST, 11 minutes before

SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
840 PM MST THU JUL 25 1996

SCT TSTMS AND ASSOCD RAINFALL TREND DECRG IN INTENSITY. MAIN
AREAS INCLUDE ERN ZN21...ZNS22/23 AND ZN26. SOME AREAS HAVE
STABLIZED BUT LOTS OF BOUNDARIES BOUNCING AROUND OUT THERE...A
FEW MODIFICATIONS TO 1ST PD. EXPECT THINGS TO LINGER AWHILE WITH
A LTL HANGING ON MUCH OF THE NIGHT.

OTRW...NOT MUCH ELSE TO CHG. LOW LVL MSTR SURGE WITH HIGH CTR
SHIFTING NWD TO MORE FAVORABLE POSN FOR SUSTAINED INFLUX OF MSTR
FM SE. A QUICK LOOK AT THE 00Z ETA SHOWS ANOTHER VERY UNSTABLE
AND MOIST FCST SOUNDING FOR TUS TMW. MID SHIFT WILL HAVE TO STUDY
CLD CONDS TO TRY AND DETERMINE TIMING AND AVBL HEATING F.OR
TMW...ALONG WITH COMPLETE PROG PACKAGE. CURRENT MORE ACTIVE AND
WIDESPREAD FCST TREND LOOKS GOOD. MEYER

In the hours before

Local storm report, Jul 25, 5:29 PM MST, 3 hours 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON
526 PM MST THU JUL 25 1996

TIME(MST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0220 PM    BENSON                    AZ   1 INCH HAIL
07/25/96   COCHISE

0350 PM    10 SW TUCSON              AZ   74 MPH TSTM GUST
07/25/96   PIMA                           RYAN AIR FIELD

0350 PM    15 W TUCSON               AZ   1.75 INCH HAIL
07/25/96   PIMA                           NEAR THE TOWN OF
                                          THREE POINTS

0400 PM    8 SW TUCSON               AZ   1.75 INCH HAIL
07/25/96   PIMA                           TUCSON ESTATES

0405 PM    6 SW TUCSON               AZ   .75 INCH HAIL
07/25/96   PIMA                           4 MILES EAST OF RYAN FIELD

0405 PM    8 SW TUCSON               AZ   WIND DAMAGE
07/25/96   PIMA                           REPORTED BY LAW
                                          ENFORCEMENT

0410 PM    10 SW TUCSON              AZ   FLOODING
07/25/96   PIMA                           FLASH FLOODING REPORTEXD
                                          NEAR KINNEY ROAD 1 MILE
                                          NORTH OF AJO ROAD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 5:00 PM MST	Flash Flood Warning	TWC	Pima	30 min

Nearby

Flash Flood Warnings in Arizona, 1996 Every flash flood warning in 1996

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.