Alert archive / Alabama / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 4, NWS Birmingham, AL

January 4, 1997Limestone County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jan 4, 1997, 11:09 PM CST for Limestone County, Alabama. It was in force for 66 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: Jan 4, 1997, 11:09 PM CST (05:09 UTC)
Expired: Jan 5, 1997, 12:15 AM CST
In force: 66 min
Issued by: NWS Birmingham, AL
Area: Whole counties

County Limestone County, AL

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 4, 8:15 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 5.2 hours before the alert went out and 151 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: 153 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 789 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 426 m²/s²
0-3 km storm-relative helicity: 479 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KHSV 050509 RRA
SVRHSV
ALC083-050615-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1109 PM CST SAT JAN 4 1997
 
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1215 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH ALABAMA
 
   ...LIMESTONE COUNTY
 
AT 1106 AM CST WEATHER SERVICE RADAR IN HUNTSVILLE INDICATED A LINE OF
SEVERE THUNDERSTORMS EXTENDING FROM NORTHEAST LIMESTONE TO NEAR TANNER
IN LIMESTONE COUNTY. THE STRONGEST STORM WAS LOCATED JUST SOUTHWEST OF T
N 
MOVEMENT OF THE THUNDERSTORMS WAS EAST SOUTHEAST AT 35 MILES AN HOUR.
 
 
 
 
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 COVEJRS THE ROAD.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 4, 9:47 PM CST	Severe Thunderstorm Warning	BMX	Colbert	58 min
Jan 4, 9:57 PM CST	Severe Thunderstorm Warning	BMX	Lauderdale	48 min
Jan 4, 10:14 PM CST	Severe Thunderstorm Warning	BMX	Franklin	61 min
Jan 4, 11:16 PM CST	Severe Thunderstorm Warning	BMX	Morgan	59 min
Jan 4, 11:22 PM CST	Severe Thunderstorm Warning	BMX	Madison	68 min
Jan 4, 11:26 PM CST	Severe Thunderstorm Warning	BMX	Madison	64 min
Jan 5, 12:07 AM CST	Severe Thunderstorm Warning	BMX	Jackson	68 min
Jan 5, 12:34 AM CST	Severe Thunderstorm Warning	BMX	Marshall	56 min
Jan 5, 12:44 AM CST	Severe Thunderstorm Warning	BMX	DeKalb	61 min
Jan 5, 12:59 AM CST	Severe Thunderstorm Warning	BMX	Hale, Tuscaloosa	46 min
Jan 5, 1:05 AM CST	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Shelby	40 min
Jan 5, 1:08 AM CST	Flash Flood Warning	BMX	Marshall	2 hr
Jan 5, 1:13 AM CST	Severe Thunderstorm Warning	BMX	Etowah, St. Clair	47 min
Jan 5, 1:29 AM CST	Severe Thunderstorm Warning	BMX	Cherokee	46 min
Jan 5, 1:37 AM CST	Severe Thunderstorm Warning	BMX	Perry	53 min
Jan 5, 1:43 AM CST	Severe Thunderstorm Warning	BMX	Bibb, Shelby	47 min
Jan 5, 1:53 AM CST	Severe Thunderstorm Warning	BMX	Talladega	52 min
Jan 5, 3:00 AM CST	Severe Thunderstorm Warning	BMX	Clay, Randolph	45 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.