Alert archive / Arizona / Flash Flood Warnings in 1992

Flash Flood Warning 5, NWS Tucson, AZ

July 29, 1992Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 29, 1992, 8:44 PM MST for Pima County, Arizona. It was in force for 86 min.

The area

The counties it named.

The facts

Issued
Jul 29, 1992, 8:44 PM MST (03:44 UTC)
Expired
Jul 29, 1992, 10:10 PM MST
In force
86 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Pima County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 3.7 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 1992-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1352 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 1992-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
1352 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
2273 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
177 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 300345
FFWTUS
AZC019-300545-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON ARIZONA
844 PM MST WED JUL 29 1992
 
THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL 1045 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL ARIZONA
 
   ...EASTERN PIMA COUNTY
 
AT 840 PM MST TUCSON RADAR...FLOOD ALERT SYSTEM AND LOCAL SPOTTER
REPORTS INDICATED A SEVERE THUNDERSTORM OVER NORTH CENTRAL AND
NORTHWEST TUCSON. ALSO REPORTS OF URBAN FLOODING HAVE BEEN RECIEVED.
 
ALSO ADDITIONAL THUNDERSTORMS ARE INDICATED BY RADAR DEVELOPING JUST S
OF THE METRO AREA.  THESE THUNDERSTORMS WILL LIKELY AFFECT THE AREA
WITH STRONG POSSIBLY DAMAGING WINDS...HEAVY RAIN WITH LOCALIZED
FLOODING FOR THE NEXT ONE TO TWO HOURS.
 
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.
 
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 PJRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.

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, Jul 29, 5:07 PM MST, 3 hours 37 minutes before
AZC003-019-023-300200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
505 PM MST TUE JUL 7 1992

...A FLASH FLOOD WATCH IS IN AFFECT UNTIL 10PM...

AT 455 PM MST...NATIONAL WEATHER SERVICE RADAR...SATELLITE PICTURES
AND LIGHTNING DETECTION DEVICES INDICATED STRONG THUNDERSTORMS
IN THE VICINITY OF NOGALES.  THESE STORMS WERE OVER AND JUST NORTH OF
THE NOGALES AREA ALONG I-19.  OTHER STRONG THUNDERSTORMS WERE ALONG
A LINE FROM SAFFORD OVER BENSON TO NOGALES AND IN THE VICINITY OF THE
ORGAN PIPE NATIONAL MONUMENT.

REPORTS FROM DPS OFFICERS IN THE VICINITY OF NOGALES AND BENSON
INDICATE HEAVY RAINS RESTRICTING VISIBILITY WERE OCCURRING ALONG I-19
AND I-10 IN THE VICINITY OZF THESE CITIES.  MOTORIST SHOULD TAKE
PRECAUTIONS AS DRIVING CONDITIONS WILL BECOME QUITE HAZARDOUS IN
SOUTHEASTERN ARIZONA TONIGHT.  DO NOT CROSS FLOODED ROADWAYS.
>
END...NORDQUIST
Special weather statement, Jul 29, 5:14 PM MST, 3 hours 30 minutes before
AZC003-019-023-300200-

SPECIAL WEATHER STATEMENT...CORRECTION FOR DATE...
NATIONAL WEATHER SERVICE TUCSON ARIZONA
505 PM MST WED JUL 29 1992

...A FLASH FLOOD WATCH IS IN AFFECT UNTIL 10PM...

AT 455 PM MST...NATIONAL WEATHER SERVICE RADAR...SATELLITE PICTURES
AND LIGHTNING DETECTION DEVICES INDICATED STRONG THUNDERSTORMS
IN THE VICINITY OF NOGALES.  THESE STORMS WERE OVER AND JUST NORTH OF
THE NOGALES AREA ALONG I-19.  OTHER STRONG THUNDERSTORMS WERE ALONG
A LINE FROM SAFFORD OVER BENSON TO NOGALES AND IN THE VICINITY OF THE
ORGAN PIPE NATIONAL MONUMENT.

REPORTS FROM DPS OFFICERS IN THE VICINITY OF NOGALES AND BENSON
INDICATE HEAVY RAINS RESTRICTING VISIBILITY WERE OCCURRING ALONG I-f19
AND I-10 IN THE VICINITY OF THESE CITIES.  MOTORIST SHOULD TAKE
PRECAUTIONS AS DRIVING CONDITIONS WILL BECOME QUITE HAZARDOUS IN
SOUTHEASTERN ARIZONA TONIGHT.  DO NOT CROSS FLOODED ROADWAYS.
>
END...NORDQUIST

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 7:32 PM MSTSevere Thunderstorm WarningTWCPima118 min
Jul 29, 8:44 PM MSTSevere Thunderstorm WarningTWCPima86 min
Jul 29, 9:16 PM MSTSevere Thunderstorm WarningTWCPima

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.