Alert archive / Alabama / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 184, NWS Birmingham, AL

March 25, 1997Colbert County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 25, 1997, 6:20 PM CST for Colbert County, Alabama. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 25, 1997, 6:20 PM CST (00:20 UTC)
Expired
Mar 25, 1997, 6:45 PM CST
In force
25 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Colbert County, AL

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.3 hours before the alert went out and 193 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, Nashville Metro, TN at 00:00Z on 1997-03-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 68 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, Nashville Metro, TN at 00:00Z on 1997-03-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 177 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
68 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1403 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
177 m²/s²
0-3 km storm-relative helicity
211 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 KHSV 260020 RRA
SVRHSV
ALC033-260045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
620 PM CST TUE MAR 25 1997
 
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  645 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH ALABAMA
 
   ...COLBERT COUNTY
 
AT 620 PM...NATIONAL WEATHER SERVICE RADAR IN HUNTSVILLE INDICATED A
SEVERE THUNDERSTORM IN EASTERN COLBERT COUNTY BETWEEN LEIGHTON AND
MUSCLE SHOALS. MOVEMENT WAS TO THE EAST AT 35 MPH.
 
LARGE HAIL AND STRAIGHT LINE WINDS ARE THE PRIMARY THREATS FROM THIS
STORM.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 25, 6:42 PM CSTSevere Thunderstorm WarningBMXFayette, Lamar48 min
Mar 25, 6:54 PM CSTTornado WarningBMXFayette31 min
Mar 25, 7:33 PM CSTSevere Thunderstorm WarningBMXJefferson62 min
Mar 25, 7:49 PM CSTTornado WarningBMXJefferson46 min
Mar 25, 8:18 PM CSTSevere Thunderstorm WarningBMXSt. Clair62 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1997Every severe thunderstorm 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.