Alert archive / Alabama / Flash Flood Warnings in 1990

Flash Flood Warning 2, NWS Birmingham, AL

February 3, 1990Lawrence County, Alabama

NWS Birmingham, AL issued this flash flood warning at Feb 3, 1990, 5:53 PM CST for Lawrence County, Alabama. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Feb 3, 1990, 5:53 PM CST (23:53 UTC)
Expired
Feb 3, 1990, 10:00 PM CST
In force
4 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

County Lawrence County, AL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 11.9 hours before the alert went out and 181 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 1990-02-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 48 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 1990-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 202 square meters per square second.1939587897Sfc1 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
48 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
609 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
202 m²/s²
0-3 km storm-relative helicity
252 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 032354
FFWHSV
ALC079-083-089-103-040400-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
553 PM CST SAT FEB 3 1990
 
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1000 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTH ALABAMA
          ...LAWRENCE...LIMESTONE...MADISON...MORGAN
 
AT 5:50 PM... HUNTSVILLE RADAR INDICATED A BAND OF THUNDERSTORMS
PRODUCING HEAVY RAIN FROM WESTERN LIMESTONE COUNTY DOWN ACROSS MUCH OF
LAWRENCE COUNTY. THE AREA WAS MOVING TO THE EAST-NORTHEAST AND
WILL PASS ACROSS MORGAN... LIMESTONE... MADISON AND LAWRENCE COUNTIES
DURING THE NEXT 1 TO 2 HOURS.
 
 
BE ESPEC*IALLY 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 3, 5:02 PM CSTSevere Thunderstorm WarningBMXPickens43 min
Feb 3, 5:53 PM CSTFlash Flood WarningBMXLimestone, Madison, Morgan4 hr
Feb 3, 5:58 PM CSTTornado WarningBMXPickens47 min

Nearby

Flash Flood Warnings in Alabama, 1990Every flash flood warning in 1990

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.