Alert archive / Alabama / Flash Flood Warnings in 1997

Flash Flood Warning 8, NWS Birmingham, AL

April 28, 1997Etowah County, Alabama

NWS Birmingham, AL issued this flash flood warning at Apr 28, 1997, 6:15 PM CDT for Etowah County, Alabama. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 28, 1997, 6:15 PM CDT (23:15 UTC)
Expired
Apr 28, 1997, 8:15 PM CDT
In force
2 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

County Etowah County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 11.3 hours before the alert went out and 118 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, Birmingham, AL at 12:00Z on 1997-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 263 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, Birmingham, AL at 12:00Z on 1997-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 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
263 J/kg
Mixed-layer CIN
-100 J/kg
Mixed-layer LCL
504 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
152 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBHM 282316
FFWBHM
ALC055-290115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
615 PM CDT MON APR 28 1997

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM AL HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 815 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHERN ALABAMA

   ...SOUTHERN ETOWAH
 
AT 610 PM CDT A STRONG THUNDERSTORM WAS PRODUCING VERY HEAVY RAINFALL
OVER SOUTHERN ETOWAH COUNTY AND WAS DRIFTING VERY SLOWLY NORTH.
LOCAL FLOODING OF SOME STREETS AND ROADS MAY OCCUR WITH THIS STORM.
RAINFALL AMOUNTS OF UP TO TWO INCHES HAVE ALREADY OCCURED OVER THIS
AREA.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY AND THE ROAD BENEATH MAY NOT BE INTACT. VEHICLES
CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. IT ONLY TAKES
A FOOT OR TWO OF FLOWING WATER TO WASH MOST CARS AWAY. REMEMBER...
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 28, 1:10 PM CDTSevere Thunderstorm WarningBMXSt. Clair30 min
Apr 28, 1:46 PM CDTSevere Thunderstorm WarningBMXTalladega34 min
Apr 28, 2:10 PM CDTSevere Thunderstorm WarningBMXCalhoun60 min
Apr 28, 2:52 PM CDTSevere Thunderstorm WarningBMXEtowah, St. Clair63 min
Apr 28, 3:53 PM CDTSevere Thunderstorm WarningBMXCherokee62 min
Apr 28, 4:16 PM CDTSevere Thunderstorm WarningBMXBlount49 min
Apr 28, 4:46 PM CDTSevere Thunderstorm WarningBMXEtowah64 min
Apr 28, 4:49 PM CDTSevere Thunderstorm WarningBMXMarshall56 min
Apr 28, 4:56 PM CDTSevere Thunderstorm WarningBMXCullman, Winston64 min
Apr 28, 5:02 PM CDTSevere Thunderstorm WarningBMXDeKalb58 min
Apr 28, 5:13 PM CDTSevere Thunderstorm WarningBMXLimestone, Madison62 min
Apr 28, 5:21 PM CDTSevere Thunderstorm WarningBMXSt. Clair49 min
Apr 28, 5:40 PM CDTSevere Thunderstorm WarningBMXBlount65 min
Apr 28, 5:51 PM CDTTornado WarningBMXDeKalb69 min
Apr 28, 6:08 PM CDTSevere Thunderstorm WarningBMXSt. Clair32 min
Apr 28, 6:15 PM CDTSevere Thunderstorm WarningBMXMarshall60 min
Apr 28, 6:27 PM CDTSevere Thunderstorm WarningBMXEtowah48 min
Apr 28, 6:31 PM CDTTornado WarningBMXMarshall59 min
Apr 28, 6:44 PM CDTSevere Thunderstorm WarningBMXCalhoun66 min

Nearby

Flash Flood Warnings in Alabama, 1997Every flash flood warning in 1997

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.