Alert archive / Alabama / Flash Flood Warnings in 1992

Flash Flood Warning 3, NWS Birmingham, AL

June 12, 1992Lawrence County, Morgan County, Alabama

NWS Birmingham, AL issued this flash flood warning at Jun 12, 1992, 9:55 AM CDT for Lawrence County, Morgan County, Alabama. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jun 12, 1992, 9:55 AM CDT (14:55 UTC)
Expired
Jun 12, 1992, 2:00 PM CDT
In force
4 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

Counties Lawrence County, AL, Morgan County, AL

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 2.9 hours before the alert went out and 177 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, Centreville/Bibb, AL at 12:00Z on 1992-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 862 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, Centreville/Bibb, AL at 12:00Z on 1992-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
862 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
563 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
35 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 KHSV 121456
FFWHSV
ALC079-103-121900-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
955 AM CDT FRI JUN 12 1992
 
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  200 PM CDT
 
 
IN NORTH ALABAMA
 
   ...LAWRENCE COUNTY...MORGAN COUNTY
 
AT 950 AM CDT RADAR AT HUNTSVILLE INDICATED THUNDERSHOWERS AND RAIN
SHOWERS WITH VERY HEAVY RAIN IN LAWRENCE AND MORGAN COUNTIES OF
ALABAMA. MOVEMENT WAS EAST SOUTHEAST AT AROUND 10 MILES AN HOUR.
THE PRECIPITATION WILL MOVE INTO SOUTH MADISON AND NORTHWEST MARSHALL
COUNTIES LATER TODAY.
 
THE EMERGENCY MANAGEMENT OFFICES IN LAWRENCE AND MORGAN COUNTIES
REPORTED STREET FLOODING IN DECATUR...TOWN CREEK AND COURTLAND.
 
 
 
 
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.

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.