Alert archive / Alabama / Flash Flood Warnings in 1997

Flash Flood Warning 24, NWS Birmingham, AL

June 22, 1997Shelby County, Alabama

NWS Birmingham, AL issued this flash flood warning at Jun 22, 1997, 7:27 AM CDT for Shelby 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
Jun 22, 1997, 7:27 AM CDT (12:27 UTC)
Expired
Jun 22, 1997, 9:30 AM CDT
In force
2 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

County Shelby County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 0.5 hours before the alert went out and 14 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 1997-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 191 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 1997-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.1939Sfc1 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
191 J/kg
Mixed-layer CIN
-100 J/kg
Mixed-layer LCL
520 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
118 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 221228
FFWBHM
ALC117-221430-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
727 AM CDT SUN JUN 22 1997
 
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  930 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL ALABAMA
 
   ...EASTERN SHELBY COUNTY...
 
AN AREA OF THUNDERSTORMS IS MOVING ACROSS SHELBY COUNTY...THESE STORMS
WILL PRODUCE 1 TO 2 INCHES OF RAIN IN LESS THAN AN HOUR. THIS RAIN ON
ALREADY SATURATED GROUND WILL PRODUCE FLOODING OF LOW LYING AREAS...AN
SOME STREAMS.
 
THE FLOODING POTENTIAL IS ESPECIALLY HIGH IN THE AREA OF THE COUNTY THAT
HAD NEARLY SIX INCHES OF RAIN YESTERDAY...NEAR VINCENT...VANDIVER...AND
STERRETT.
 
AFTER THE THUNDERSTORMS MOVE THROUGH A LARGE AREA OF MODERATE RAIN WILL
FALL OVER THE AREA THROUGH 10 AM.
 
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOT<S IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A
SMALL ONE...ON FOOT.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:04 PM CDTSevere Thunderstorm WarningBMXSumter31 min
Jun 22, 4:21 AM CDTFlash Flood WarningBMXBlount, St. Clair, Talladega4 hr
Jun 22, 5:08 AM CDTFlash Flood WarningBMXCullman4 hr
Jun 22, 5:43 AM CDTFlash Flood WarningBMXClay3 hr
Jun 22, 6:23 AM CDTFlash Flood WarningBMXMarion, Winston117 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.