Alert archive / Alabama / Flash Flood Warnings in 1993

Flash Flood Warning 1, NWS Birmingham, AL

March 23, 1993Jackson County, Alabama

NWS Birmingham, AL issued this flash flood warning at Mar 23, 1993, 10:39 AM CST for Jackson County, Alabama. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Mar 23, 1993, 10:39 AM CST (16:39 UTC)
Expired
Mar 23, 1993, 12:45 PM CST
In force
2 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

County Jackson County, AL

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 4.7 hours before the alert went out and 160 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, Nashville Metro, TN at 12:00Z on 1993-03-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 100 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, Nashville Metro, TN at 12:00Z on 1993-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.19395878Sfc1 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
100 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
543 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
112 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 231647 COR
FFWHSV
ALC071-231845-

BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1045 AM CST TUE MAR 23 1993

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1245 PM CST
...

IN NORTH ALABAMA

   ...JACKSON COUNTY

A FLASH FLOOD WATCH IS IN EFFECT FOR JACKSON MARSHALL AND DE KALB
COUNTIES THIS AFTERNOON.

THE EMERGENCY MANAGEMENT OFFICE REPORTED TWO HOUSES FLOODED IN
WOODVILLE.  A HOUSE WAS FLOODED IN GARTH AND THREE SPRING SCHOOL
IS FLOODED.

AT 1038 AM CST RADAR AT HUNTSVILLE SHOWED THUNDERSHOWERS IN JACKSON
AND DE KALB COUNTIES MOVING NORTHEAST AT 20 MILES AN HOUR.

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.

Nearby

Flash Flood Warnings in Alabama, 1993Every flash flood warning in 1993

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.