Alert archive / Arizona / Flash Flood Warnings in 1996

Flash Flood Warning 4, NWS Tucson, AZ

July 6, 1996Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 6, 1996, 7:43 PM MST for Pima County, Arizona. It was in force for 92 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 6, 1996, 7:43 PM MST (02:43 UTC)
Expired
Jul 6, 1996, 9:15 PM MST
In force
92 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Pima County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 2.7 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 00:00Z on 1996-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 478 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 00:00Z on 1996-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 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
478 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
3390 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUS 070243
FFWTUS
AZC019-070345-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON ARIZONA
743 PM MST SAT JUL 6 1996
 
THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  915 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL ARIZONA
 
   ...SOUTHEASTERN PIMA COUNTY
 
RADAR INDICATES TORRENTIAL RAINFALL WITH THUNDERSTORMS IN THE
SOUTHEAST PART OF PIMA COUNTY. RAINFALL ESTIMATES INDICATE
AS MUCH OF 2 TO 3 INCHES OF RAIN SINCE 645 PM BETWEEN ARIVACA
AND ARIVACA JUNCTION ON ARAVACA ROAD.
 
RAPID RUNOFF WILL PRODUCE FLASH FLOODING.  AVOID LOW AREAS...
WASHES...AND DRAINAGES. MOTORISTS SHOULD BE ESPECIALLY
CAUTIOUS.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
 
DRB

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 6, 2:22 PM MST, 5 hours 21 minutes earlier.

Area forecast discussion, Jul 6, 2:22 PM MST, 5 hours 21 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
220 PM MST SAT JUL 6 1996

ECHOS POPD IN ZN 25 AS EARLY AS 17Z THIS MRNG WITH .5 INCH
HAIL BY 18Z. LTL CHG IN SYNOPTIC PATTERN. UPR HI REMAINS OVR
AZ/NM AREA WITH ELY FLOW AT H5.  MODELS SHOWG UPR WV MOVG WWD
ACRS MEXICO TO SRN BAJA AREA.  IF THIS INCRS CLD CVR OVR SRN
GLF CA...MAY BRING BACK GLF SURGE TYPE MSTR INFLUX.  ON SUN...
MODELS TRYG TO INCR LOW LVL CONVERGENCE OVR S|IERRA MADRES.
MON...AVN KEEPING 80-90 PCT RH AT H5 OVR ZN25. WILL GO WITH
SCT TSTMS IN FAR ERN ZNS. ALSO HGTS AND THKN DOWN A BIT. ALL
MOS GUIDANCE INCRG CLDS AND DROPPING MAX TEMPS 2-6 DEGREES. WILL
GO ALONG WITH THIS.

In the hours before

Local storm report, Jul 6, 6:22 PM MST, 1 hour 21 minutes before
LOCAL STORM REPORT...CORRECT DATE OF REPORT
NATIONAL WEATHER SERVICE TUCSON
620 PM MST SAT JUL 6 1996

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

 554 PM    5 EAST HUACHUCA CITY      AZ   62 MPH WIND MEASURED BY
           COCHISE                        AN AUTOMATED STATION IN
                                          SOUTHWEST COCHISE COUNTY
                                          JUST EAST" OF HUACHUCA CITY

 520 PM    BENSON                    AZ   6 INCH DIAMETER TREE LIMB
           COCHISE                        DOWN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 5:03 PM MSTSevere Thunderstorm WarningTWCCochise42 min
Jul 6, 5:50 PM MSTSevere Thunderstorm WarningTWCCochise, Pima, Santa Cruz40 min
Jul 6, 5:58 PM MSTFlash Flood WarningTWCCochise62 min
Jul 6, 6:36 PM MSTFlash Flood WarningTWCPima54 min
Jul 6, 6:36 PM MSTSevere Thunderstorm WarningTWCPima54 min
Jul 7, 3:30 PM MSTSevere Thunderstorm WarningTWCSanta Cruz30 min
Jul 7, 4:42 PM MSTFlash Flood WarningTWCPima48 min
Jul 7, 4:42 PM MSTSevere Thunderstorm WarningTWCPima48 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.