Alert archive / Arizona / Flash Flood Warnings in 1992

Flash Flood Warning 4, NWS Tucson, AZ

July 23, 1992Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 23, 1992, 7:08 PM MST for Pima County, Arizona. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Jul 23, 1992, 7:08 PM MST (02:08 UTC)
Expired
Jul 23, 1992, 8:15 PM MST
In force
67 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Pima County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 2.1 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 1992-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 140 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 1992-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.193958Sfc1 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
140 J/kg
Mixed-layer CIN
-182 J/kg
Mixed-layer LCL
1717 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
44 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 240204
FFWTUS
AZC019-240315-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON ARIZONA
708 PM MST THU JUL 23 1992
 
THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL  815 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL ARIZONA
 
   ...CENTRAL PIMA COUNTY
 
AT 705 PM...WEATHER SERVICE RADAR INDICATED FOUR VERY STRONG
THUNDERSTORMS IN CENTRAL PIMA COUNTY FROM NEAR SAN MIGUEL TO SELLS TO
NEAR GU ACHI. THE THUNDERSTORMS APPEARED TO BE MOVING SLOWLY NORTH.
 
 
 
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...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.
 
SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WIND...HEAVY RAIN...AND
LARGE HAIL.  PERSONS IN THE VICINITY SHOULD TAKE IMMEDIATE COVER.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 7:08 PM MSTSevere Thunderstorm WarningTWCPima67 min

Nearby

Flash Flood Warnings in Arizona, 1992Every flash flood warning in 1992

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.