Alert archive / Alabama / Flash Flood Warnings in 1992

Flash Flood Warning 13, NWS Birmingham, AL

December 16, 1992Clay County, Alabama

NWS Birmingham, AL issued this flash flood warning at Dec 16, 1992, 11:49 PM CST for Clay County, Alabama. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Dec 16, 1992, 11:49 PM CST (05:49 UTC)
Expired
Dec 17, 1992, 2:00 AM CST
In force
2 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

County Clay County, AL

The nearest sounding before it

Athens Municipal, GA (KAHN), launched 00:00Z, 5.8 hours before the alert went out and 249 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, Athens Municipal, GA at 00:00Z on 1992-12-17Temperature 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, Athens Municipal, GA at 00:00Z on 1992-12-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 399 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
534 m above ground
0-6 km bulk shear
84 kt
0-1 km storm-relative helicity
399 m²/s²
0-3 km storm-relative helicity
383 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 KBHM 170550
FFWBHM
ALC027-170800-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1149 PM CST WED DEC 16 1992
 
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  200 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH ALABAMA
 
   ...CLAY COUNTY
 
THE FLASH FLOOD WARNING FOR CLAY COUNTY HAS BEEN EXTENDED. THE CLAY
COUNTY EMA DIRECTOR CONTINUED TO REPORT ROADS COVERED WITH WATER IN THE
CLAIRMONT SPRINGS AND SHADY GROVE AREAS. IN ADDITION SOME FLOODING WAS
REPORTED ALONG HIGHWAY 7 AND HIGHWAY 64 NEAR HATCHET CREEK.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
 
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 16, 9:52 PM CSTFlash Flood WarningBMXClay2 hr

Nearby

Flash Flood Warnings in Alabama, 1992Every flash flood warning in 1992

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.