Alert archive / Alabama / Flash Flood Warnings in 1992

Flash Flood Warning 4, NWS Mobile, AL

November 12, 1992Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Nov 12, 1992, 11:37 AM CST for Mobile County, Alabama. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Nov 12, 1992, 11:37 AM CST (17:37 UTC)
Expired
Nov 12, 1992, 1:45 PM CST
In force
2 hr
Issued by
NWS Mobile, AL
Area
Whole counties

County Mobile County, AL

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 5.6 hours before the alert went out and 152 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, Slidell Radar S, LA at 12:00Z on 1992-11-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 306 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 1992-11-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 square meters per square second.193958Sfc1 km3 km6 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
306 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
548 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 121737
FFWMOB
ALC097-121945-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1137 AM CST THU NOV 12 1992
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  145 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST ALABAMA
 
   ...MOBILE COUNTY
 
AT 1130 AM VERY HEAVY RAIN CONTINUES TO FALL OVER THE CITY OF MOBILE AND
MOBILE COUNTY IN SOUTHWEST ALABAMA. AT MOBILE BATES FIELD MUNICIPAL
AIRPORT 2.50 INCHES OF RAIN HAS FALL SINCE 10 AM AND HEVY RAIN CONTINUES
TO FALL.
 
 
MOST DEATHS IN FLASH FLOODING 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.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD $BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
 
 
&

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 12, 1:25 PM CSTTornado WarningMOBDale65 min
Nov 12, 1:53 PM CSTTornado WarningMOBCrenshaw, Pike67 min
Nov 12, 2:34 PM CSTSevere Thunderstorm WarningMOBDale, Henry, Houston56 min
Nov 12, 2:51 PM CSTTornado WarningMOBHouston54 min

Nearby

Flash Flood Warnings in Alabama, 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.