Alert archive / Alabama / Flash Flood Warnings in 1991

Flash Flood Warning 5, NWS Birmingham, AL

February 18, 1991Franklin County, Alabama

NWS Birmingham, AL issued this flash flood warning at Feb 18, 1991, 9:25 PM CST for Franklin County, Alabama. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Feb 18, 1991, 9:25 PM CST (03:25 UTC)
Expired
Feb 19, 1991, 3:30 AM CST
In force
6 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

County Franklin County, AL

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 00:00Z, 3.4 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 00:00Z on 1991-02-19Temperature 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 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 00:00Z on 1991-02-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 367 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
807 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
367 m²/s²
0-3 km storm-relative helicity
490 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 18, 9:25 PM CSTFlash Flood WarningBMXColbert, Lauderdale, Lawrence, Limestone6 hr
Feb 18, 9:25 PM CSTFlash Flood WarningBMXMadison, Morgan6 hr
Feb 19, 3:30 AM CSTFlash Flood WarningBMXLawrence, Limestone, Morgan3 hr
Feb 19, 3:30 AM CSTFlash Flood WarningBMXColbert, Lauderdale3 hr
Feb 19, 4:56 AM CSTFlash Flood WarningBMXMadison3 hr
Feb 19, 6:29 AM CSTFlash Flood WarningBMXColbert, Lauderdale4 hr
Feb 19, 7:21 AM CSTFlash Flood WarningBMXLawrence, Limestone, Morgan3 hr
Feb 19, 7:21 AM CSTFlash Flood WarningBMXMadison3 hr
Feb 19, 10:35 AM CSTFlash Flood WarningBMXColbert, Franklin, Lawrence6 hr
Feb 19, 10:35 AM CSTFlash Flood WarningBMXLimestone, Madison, Morgan6 hr
Feb 19, 10:35 AM CSTFlash Flood WarningBMXLauderdale6 hr
Feb 19, 12:05 PM CSTSevere Thunderstorm WarningBMXJefferson40 min
Feb 19, 4:24 PM CSTFlash Flood WarningBMXLimestone, Madison, Morgan4 hr
Feb 19, 4:24 PM CSTFlash Flood WarningBMXDeKalb, Jackson, Marshall4 hr

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.