Alert archive / Arizona / Flash Flood Warnings in 1996

Flash Flood Warning 40, NWS Tucson, AZ

July 29, 1996Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 29, 1996, 4:41 PM MST for Pima County, Arizona. It was in force for 64 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 29, 1996, 4:41 PM MST (23:41 UTC)
Expired
Jul 29, 1996, 5:45 PM MST
In force
64 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Pima County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 11.7 hours before the alert went out and 84 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 1996-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 659 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 1996-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 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
659 J/kg
Mixed-layer CIN
-157 J/kg
Mixed-layer LCL
2078 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
-5 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 
TTAA00 KTUS 292340
FFWTUS
AZC019-300045-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON ARIZONA
441 PM MST MON JUL 29 1996
 
THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  545 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL ARIZONA
 
   ...EASTERN PIMA COUNTY
 
TUCSON DOPPLER RADAR INDICATED THAT THE STRONG THUNDERSTORM
OVER THE CATALINA MOUNTAINS IS STILL PRODUCING VERY HEAVY
RAIN.  RADAR HAS ESTIMATED UP TO THREE INCHES OF RAINFALL AND
AND A RAIN GAGE HAS RECORD ONE AND A HALF INCHES. WITH THE
GROUND WET FROM PREVIOUS STORMS OVER THE WEEKEND...WATER MAY BE
RUNNING RAPIDLY IN STREAMS AND CREEKS...ESPECIALLY SABINO
CANYON.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY. BE CAUTIOUS FOR MUD AND DEBRIS ON THE ROADWAYS.

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 29, 2:18 PM MST, 2 hours 23 minutes earlier.

Area forecast discussion, Jul 29, 2:18 PM MST, 2 hours 23 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
200 PM MST MON JUL 29 1996

TSTMS FIRING ON ALL THE MTNS AND DEWPOINT FALLING OFF BUT WE MAY
STILL GET A FEW OFF OF MTNS. DONT SEE A LOT TO CHANGE THINGS NEXT
FEW DAYS SO HAVE BROAD BRUSHED FCST. GYM WAS WET THIS MORNING AND
IF WE CAN GET ANOTHER GULF SURGE GOING THINGS MAY PICK UP AGAIN.
STILL NEED  MRF PICKS OUR POPS UP AGAIN BY FRI AND ACCEPT THIS
SCENARIO. STILL WITH HI VERY CLOSE TO US SOME SUPRESSION WILL
TAKE PLACE.

72HR FCST FOR HRCN DUG LUKS INTERESTING...MAY HELP INITIATE GULF
SURGE. TUS 3232. HOLBROOK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 2:33 PM MSTSevere Thunderstorm WarningTWCPima, Santa Cruz57 min
Jul 29, 3:21 PM MSTSevere Thunderstorm WarningTWCPima69 min
Jul 29, 3:45 PM MSTFlash Flood WarningTWCPima60 min

Nearby

Flash Flood Warnings in Arizona, 1996Every 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.