Alert archive / Alabama / Flash Flood Warnings in 1991

Flash Flood Warning 45, NWS Birmingham, AL

December 2, 1991Franklin County, Alabama

NWS Birmingham, AL issued this flash flood warning at Dec 2, 1991, 8:54 AM CST for Franklin County, Alabama. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Dec 2, 1991, 8:54 AM CST (14:54 UTC)
Expired
Dec 2, 1991, 1:00 PM CST
In force
4 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

County Franklin County, AL

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 2.9 hours before the alert went out and 182 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 1991-12-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 502 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 1991-12-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 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
502 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
539 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
212 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.7

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.

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 WarningBMXJackson, Madison4 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 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.