Alert archive / Alabama / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 428, NWS Birmingham, AL

July 13, 1997Limestone County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jul 13, 1997, 2:26 PM CDT for Limestone County, Alabama. It was in force for 64 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: Jul 13, 1997, 2:26 PM CDT (19:26 UTC)
Expired: Jul 13, 1997, 3:30 PM CDT
In force: 64 min
Issued by: NWS Birmingham, AL
Area: Whole counties

County Limestone County, AL

What was reported inside it

Time	Report	Where	Remark
Jul 13, 2:45 PM CDT	Thunderstorm Wind	Cairo, AL	Trees were blown down near Elk Creek, in the western part of the county.

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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.4 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: 5 J/kg
Mixed-layer CIN: -281 J/kg
Mixed-layer LCL: 1307 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 54 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 131924 RRA
SVRHSV
ALC083-132030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
226 PM CDT SUN JUL 13 1997
 
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH ALABAMA
 
   ...LIMESTONE COUNTY
 
AT 225 PM CDT WEATHER SERVICE RADAR IN HUNTSVILLE INDICATED A RAPIDLY
DEVELOPING SEVERE THUNDERSTORM OVER WESTERN LIMESTONE COUNTY.
 
MOVEMENT WAS SOUTH AT 15 MPH.
 
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.

Issued	Product	Office	Counties	Lasted
Jul 13, 2:00 PM CDT	Severe Thunderstorm Warning	BMX	Franklin	60 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.