Alert archive / Alabama / Flash Flood Warnings in 1990

Flash Flood Warning 4, NWS Birmingham, AL

February 10, 1990Colbert County, Franklin County, Lawrence County, Alabama

NWS Birmingham, AL issued this flash flood warning at Feb 10, 1990, 1:30 AM CST for Colbert County, Franklin County, Lawrence County, Alabama. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Feb 10, 1990, 1:30 AM CST (07:30 UTC)
Expired
Feb 10, 1990, 6:30 AM CST
In force
5 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

Counties Colbert County, AL, Franklin County, AL, 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 00:00Z, 7.5 hours before the alert went out and 189 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 00:00Z on 1990-02-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 897 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Centreville/Bibb, AL at 00:00Z on 1990-02-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 282 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
897 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
603 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
282 m²/s²
0-3 km storm-relative helicity
340 m²/s²
Significant tornado parameter
1.5
Supercell composite
7.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KHSV 100732
FFWHSV
ALC033-049-059-071-077-079-083-089-095-103-101230-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
130 AM CST SAT FEB 10 1990
 
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  630 AM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTH ALABAMA
          ...COLBERT...DEKALB...FRANKLIN...JACKSON...LAUDERDALE
          ...LAWRENCE...LIMESTONE...MADISON...MARSHALL...MORGAN
 
AT 1:30 AM CST RADAR INDICATED A LARGE AREA OF MODERATE TO HEAVY
RAIN OVER NORTHWEST ALABAMA. LIGHT TO OCASIONALLY MODERATE RAIN
WAS ALREADY INDICATED OVER ALL OF THE TENNESSEE VALLEY AREA.
 
THE GROUND IN NORTH ALABAMA IS SATURATED FROM HEAVY RAINS AND
FLOODING WHICH HAS OCCURRED DURING THE PAST FEW WEEKS.
 
FLOODING HAS BEEN REPORTED IN MANY AREAS ALREADY AND WILL LIKELY
BECOME MORE WIDESPREAD THROUGH THE EARLY MORNING HOURS
AS THE HEAVY RAIN MOVES ACROSS THE REST OF NORTH ALABAMA.
 
BE ESPECIALLY 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.
 
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 TFO HIGHER GROUND.
 
N

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 9, 8:29 PM CSTSevere Thunderstorm WarningBMXLauderdale61 min
Feb 9, 8:45 PM CSTTornado WarningBMXLamar30 min
Feb 9, 8:56 PM CSTTornado WarningBMXFayette34 min
Feb 9, 9:23 PM CSTTornado WarningBMXLamar37 min
Feb 9, 9:30 PM CSTTornado WarningBMXFayette30 min
Feb 9, 9:43 PM CSTTornado WarningBMXWalker47 min
Feb 9, 10:08 PM CSTTornado WarningBMXLimestone27 min
Feb 9, 10:22 PM CSTTornado WarningBMXMadison68 min
Feb 9, 10:53 PM CSTTornado WarningBMXJackson, Madison37 min
Feb 9, 11:02 PM CSTTornado WarningBMXWalker28 min
Feb 9, 11:16 PM CSTFlash Flood WarningBMXColbert, Lauderdale4 hr
Feb 9, 11:28 PM CSTTornado WarningBMXCullman, Winston47 min
Feb 9, 11:35 PM CSTTornado WarningBMXWalker40 min
Feb 9, 11:35 PM CSTTornado WarningBMXLamar40 min
Feb 10, 12:53 AM CSTTornado WarningBMXWalker22 min
Feb 10, 12:53 AM CSTTornado WarningBMXJefferson37 min
Feb 10, 1:06 AM CSTSevere Thunderstorm WarningBMXPickens69 min
Feb 10, 1:22 AM CSTSevere Thunderstorm WarningBMXGreene68 min
Feb 10, 1:30 AM CSTFlash Flood WarningBMXLimestone, Madison, Marshall, Morgan5 hr
Feb 10, 1:30 AM CSTFlash Flood WarningBMXLauderdale5 hr
Feb 10, 1:30 AM CSTFlash Flood WarningBMXDeKalb, Jackson5 hr
Feb 10, 1:33 AM CSTSevere Thunderstorm WarningBMXTuscaloosa57 min
Feb 10, 1:53 AM CSTSevere Thunderstorm WarningBMXHale67 min
Feb 10, 2:00 AM CSTTornado WarningBMXGreene, Hale35 min
Feb 10, 2:06 AM CSTSevere Thunderstorm WarningBMXMarengo29 min
Feb 10, 2:19 AM CSTSevere Thunderstorm WarningBMXJefferson56 min
Feb 10, 2:20 AM CSTSevere Thunderstorm WarningBMXBibb55 min
Feb 10, 2:32 AM CSTSevere Thunderstorm WarningBMXShelby58 min
Feb 10, 2:39 AM CSTSevere Thunderstorm WarningBMXChilton51 min
Feb 10, 2:40 AM CSTTornado WarningBMXJefferson, Shelby30 min
Feb 10, 2:50 AM CSTTornado WarningBMXSt. Clair55 min
Feb 10, 2:54 AM CSTTornado WarningBMXTalladega66 min
Feb 10, 3:11 AM CSTTornado WarningBMXClay64 min
Feb 10, 3:11 AM CSTTornado WarningBMXCalhoun64 min
Feb 10, 3:33 AM CSTSevere Thunderstorm WarningBMXCleburne, Randolph37 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.