Alert archive / Alabama / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 10, NWS Birmingham, AL

January 5, 1997DeKalb County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jan 5, 1997, 12:44 AM CST for DeKalb County, Alabama. It was in force for 61 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jan 5, 1997, 12:44 AM CST (06:44 UTC)
Expired: Jan 5, 1997, 1:45 AM CST
In force: 61 min
Issued by: NWS Birmingham, AL
Area: Whole counties

County DeKalb County, AL

What was reported inside it

Time	Report	Where	Remark
Jan 5, 12:44 AM CST	Thunderstorm Wind	Henagar, AL

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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, 11:15 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 6.7 hours before the alert went out and 168 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: 826 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 864 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 174 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KHSV 050644 RRA
SVRHSV
ALC049-050745-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1244 AM CST SUN JAN 5 1997
 
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  145 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH ALABAMA
 
   ...DEKALB COUNTY
 
AT 1243 AM CST WEATHER SERVICE RADAR IN HUNTSVILLE INIDCATED A LINE OF
SEVERE THUNDERSTORMS MOVING OUT OF JACKSON AND MARSHALL COUNTIES INTO
WESTERN DEKALB COUNTY.
 
MOVEMENT WAS EAST AT 35 TO 40 MILES AN HOUR.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOlR 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
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, 11:09 PM CST	Severe Thunderstorm Warning	BMX	Limestone	66 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, 12:59 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.