Alert archive / Arizona / Flash Flood Warnings in 1990

Flash Flood Warning 4, NWS Tucson, AZ

July 15, 1990Santa Cruz County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 15, 1990, 7:20 PM MST for Santa Cruz County, Arizona. It was in force for 85 min.

The area

The counties it named.

The facts

Issued
Jul 15, 1990, 7:20 PM MST (02:20 UTC)
Expired
Jul 15, 1990, 8:45 PM MST
In force
85 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Santa Cruz County, AZ

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 2.3 hours before the alert went out and 72 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 1990-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 133 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 1990-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 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
133 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
1452 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
-40 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 160220
FFWTUS
AZC023-160345-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING 
NATIONAL WEATHER SERVICE TUCSON AZ
720 PM MST SUN JUL 15 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 845 PM MST FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE EXTREME SOUTH PART OF ARIZONA
      WESTERN SANTA CRUZ

AT 710 PM REPORTS FROM THE SANTA CRUZ COUNTY EMERGENCY SERVICES
INDICATED THAT WASHES IN THE VICINITY OF RIO RICO WERE FLOODING.
ALSO A REPORT OF ONE INCH OF ADDITIONAL RAIN IN JUST 15 MINUTES
IN THE IMMEDIATE VICINITY INDICATE ADDITIONAL FLOODING IS
PROBABLE.

IF YOU ARE IN THE WARNED COUNTY IN AN AREA SUBJECT TO FLOODING
MOVE ;TO HIGHER GROUND.

DO NOT ATTEMPT TO DRIVE OVER ROADS COVERED BY FLOOD WATERS OR
ACROSS FLOODED HIGHWAY DIPS.

 NORDQUIST

Nearby

Flash Flood Warnings in Arizona, 1990Every flash flood warning in 1990

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.