Alert archive / Alabama / Flash Flood Warnings in 1991

Flash Flood Warning 36, NWS Birmingham, AL

December 1, 1991Jackson County, Madison County, Alabama

NWS Birmingham, AL issued this flash flood warning at Dec 1, 1991, 10:21 PM CST for Jackson County, Madison County, Alabama. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Dec 1, 1991, 10:21 PM CST (04:21 UTC)
Expired
Dec 2, 1991, 2:30 AM CST
In force
4 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

Counties Jackson County, AL, Madison County, AL

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 4.4 hours before the alert went out and 154 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 00:00Z on 1991-12-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 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 00:00Z on 1991-12-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 162 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
505 m above ground
0-6 km bulk shear
85 kt
0-1 km storm-relative helicity
162 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Dec 1, 8:26 PM CST, 1 hour 55 minutes before
ALZ004-020430-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
827 PM CST SUN DEC 1 1991

...FLASH FLOOD WATCH IS IN EFFECT FOR LAMAR...FAYETTE...MARION...
WALKER...AND WINSTON COUNTIES FOR TONIGHT...

     AT 825 PM CST NATIONAL WEATHER SERVICE RADAR INDICATED HEAVY RAIN
OCCURRING OVER MARION AND NORTHERN LAMAR COUNTIES.  ADDITIONAL HEAVY
RAIN WILL BE MOVING OUT OF MISSSISSIPPI INTO THESE COUNTIES AS WELL AS
WINSTON COUNTY DURING THE NEXT SEVERAL HOURS.

     THE COUNTIES OF LAMAR...MARION...AND WINSTON HAVE RECEIVED AROUND
TWO INCHES OF RAIN SINCE EARLY THIS MORNING.  WITH THE GROUND
SATURATED...ANY ADDITIONAL HEAVY RAIN WILL RUNOFF RAPIDLY SWELLING
STREAMS AND POSSIBLY FLOODING LOW PLACES ALONG SECONDARY ROADWAYS.  IF
YOU ARE DRIVING IN THESE THREE COUNTIES DURING THE NEXT COUPLE OF
HOURS...USE EXTREME CAUTION AND DO NOT DRIVE INTO FLOODED AREAS WHERE
WATER COVERS THE ROAD TO AN UNKNOWN DEPTH.

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 1, 7:52 PM CSTFlash Flood WarningBMXColbert, Lauderdale, Lawrence4 hr
Dec 1, 7:52 PM CSTFlash Flood WarningBMXFranklin4 hr
Dec 1, 10:21 PM CSTFlash Flood WarningBMXLimestone, Morgan4 hr
Dec 2, 12:03 AM CSTFlash Flood WarningBMXColbert, Franklin, Lauderdale, Lawrence7 hr
Dec 2, 12:03 AM CSTFlash Flood WarningBMXDeKalb, Jackson, Madison, Marshall, Morgan7 hr
Dec 2, 12:03 AM CSTFlash Flood WarningBMXLimestone7 hr
Dec 2, 6:46 AM CSTFlash Flood WarningBMXColbert, Franklin, Lauderdale, Lawrence, Limestone, Morgan4 hr
Dec 2, 6:46 AM CSTFlash Flood WarningBMXMadison4 hr
Dec 2, 8:54 AM CSTFlash Flood WarningBMXColbert, Lauderdale, Lawrence, Limestone4 hr
Dec 2, 8:54 AM CSTFlash Flood WarningBMXJackson, Madison4 hr
Dec 2, 8:54 AM CSTFlash Flood WarningBMXFranklin4 hr
Dec 2, 8:54 AM CSTFlash Flood WarningBMXMorgan4 hr
Dec 2, 5:53 PM CSTSevere Thunderstorm WarningBMXPickens52 min

Nearby

Flash Flood Warnings in Alabama, 1991Every flash flood warning in 1991

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.