Alert archive / Arizona / Flash Flood Warnings in 1994

Flash Flood Warning 1, NWS Tucson, AZ

August 25, 1994Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 25, 1994, 7:41 PM MST for Cochise County, Arizona. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Aug 25, 1994, 7:41 PM MST (02:41 UTC)
Expired
Aug 25, 1994, 8:45 PM MST
In force
64 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Cochise County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 2.7 hours before the alert went out and 113 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 1994-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 553 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 1994-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
553 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
2202 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
127 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 260241
FFWTUS
AZC003-260345-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON ARIZONA
741 PM MST THU AUG 25 1994
 
THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  845 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST ARIZONA
 
   ...SOUTHWESTERN COCHISE COUNTY
 
TUCSON WEATHER RADAR AND SPOTTER REPORTS INDICATES VERY HEAVY RAINFALL
IN SOUTHWESTERN COCHISE COUNTY. THE INTERSECTION OF HIGHWAY 82 AND
HIGHWAY 90 WAS BEGINNING TO RUN WITH WATER AND MOTORISTS WERE PULLING
OFF THE HIGHWAY AND PARKING DUE TO VERY REDUCED VISIBILTY IN THE HEAVY
RAIN.
 
RAINFALL OF THIS INTENSITY CAN CREATE FLOODING SITUATIONS IN A VERY
SHORT TIME AND PERSONS IN THE AREA SHOULD BE ALERT TO RAPIDLY RISING
WATER IN FLOOD PRONE AREAS AND SEEK HIGHER GROUND IF NECESSARY.
 
 
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT.  IT'S
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS.  CAMPERS SHOULD
AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.
 
 
 
BARTOLOME

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.

In the hours before

Special weather statement, Aug 25, 2:02 PM MST, 5 hours 39 minutes before
AZZ009-010-252300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
202 PM MST THU AUG 25 1994

...THUNDERSTORMS INCREASING...

AT 155 PM MST WEATHER RADAR AND LIGHTNING DETECTORS INDICATED THAT
THUNDERSTORM COVERAGE IN SOUTHEAST ARIZONA WAS ON THE INCREASE.  THE
STORNGEST STORMS WERE NEAR ARIVACA IN SOUTHERN PIMA COUNTY...A FEW MILES
EAST OF PATAGONIA IN SANTA CRUZ COUNTY...AND SOUTH OF I-10 NEAR THE
PIMA/COCHISE COUNTY LINE.  INDIVIDUAL CELL MOVEMENT WAS TO THE SOUTHWEST
AT ABOUT 10 MPH.

RAINSHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP IN SOUTHEAST
ARIZONA THROUGHOUT THE REST OF THE AFTERNOON AND INTO THE EVENING HOURS.
SOME OF THESE STORMS MAY END UP BEING QUITE STRONG.

MEYER

Nearby

Flash Flood Warnings in Arizona, 1994Every flash flood warning in 1994

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.