Alert archive / Alabama / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 189, NWS Birmingham, AL

March 28, 1997Lauderdale County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 28, 1997, 8:56 PM CST for Lauderdale County, Alabama. It was in force for 64 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 28, 1997, 8:56 PM CST (02:56 UTC)
Expired: Mar 28, 1997, 10:00 PM CST
In force: 64 min
Issued by: NWS Birmingham, AL
Area: Whole counties

County Lauderdale County, AL

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 2.9 hours before the alert went out and 167 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1331 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1544 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 223 m²/s²
0-3 km storm-relative helicity: 390 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 11.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KHSV 290257 RRA
SVRHSV
ALC077-290400-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
856 PM CST FRI MAR 28 1997
 
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH ALABAMA
 
   ...LAUDERDALE COUNTY
 
AT 855 PM CST WEATHER SERVICE RADAR IN HUNTSVILLE INDICATED A SEVERE
THUNDERSTORM NEAR THREET IN LAUDERDALE COUNTY. MOVEMENT WAS EAST AT 45
MILES AN HOUR.
 
THIS STORM WILL LIKELY CONTAIN LARGE HAIL AND DAMAGING WINDS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY JRAIN.
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.

Issued	Product	Office	Counties	Lasted
Mar 28, 10:32 PM CST	Severe Thunderstorm Warning	BMX	Lawrence	58 min
Mar 28, 10:47 PM CST	Severe Thunderstorm Warning	BMX	Morgan	58 min
Mar 29, 12:13 AM CST	Severe Thunderstorm Warning	BMX	Cullman	32 min
Mar 29, 12:20 AM CST	Severe Thunderstorm Warning	BMX	Walker	50 min
Mar 29, 12:25 AM CST	Severe Thunderstorm Warning	BMX	Blount	65 min
Mar 29, 12:39 AM CST	Severe Thunderstorm Warning	BMX	DeKalb	66 min
Mar 29, 1:04 AM CST	Severe Thunderstorm Warning	BMX	St. Clair	31 min
Mar 29, 1:10 AM CST	Severe Thunderstorm Warning	BMX	Etowah	65 min
Mar 29, 1:23 AM CST	Severe Thunderstorm Warning	BMX	Calhoun	62 min
Mar 29, 1:30 AM CST	Severe Thunderstorm Warning	BMX	Cherokee	35 min
Mar 29, 2:00 AM CST	Severe Thunderstorm Warning	BMX	St. Clair	20 min
Mar 29, 2:45 AM CST	Severe Thunderstorm Warning	BMX	Calhoun	30 min
Mar 29, 2:51 AM CST	Severe Thunderstorm Warning	BMX	Cleburne	64 min
Mar 29, 5:11 PM CST	Severe Thunderstorm Warning	BMX	Russell	49 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1997 Every 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.