Alert archive / Alabama / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 194, NWS Birmingham, AL

March 29, 1997Blount County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 29, 1997, 12:25 AM CST for Blount County, Alabama. It was in force for 65 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: Mar 29, 1997, 12:25 AM CST (06:25 UTC)
Expired: Mar 29, 1997, 1:30 AM CST
In force: 65 min
Issued by: NWS Birmingham, AL
Area: Whole counties

County Blount County, AL

What was reported inside it

Time	Report	Where	Remark
Mar 29, 12:59 AM CST	Hail 1	Remlap, 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 nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 6.4 hours before the alert went out and 91 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: 1329 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 1429 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 275 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 8.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBHM 290626 RRA
SVRBHM
ALC009-290730-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1225 AM CST SAT MAR 29 1997

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM AL HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 130 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHERN ALABAMA

   ...BLOUNT
 
AT 1223 AM CST...A SEVERE THUNDERSTORM WAS INDICATED BY WEATHER
RADAR 9 MILES WEST OF BLOUNT SPRINGS MOVING EAST AT 45 MPH.

SOME LOCATIONS IN THE PATH OF THIS STORM ARE...
BLOUNT SPRINGS              AROUND 1234 AM CST
HAYDEN                      AROUND 1236 AM CST
NECTAR                      AROUND 1246 AM CST
BLOUNTSVILLE                AROUND 1251 AM CST
ONEONTA                     AROUND 1258 AM CST
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL... DEADLY LIGHTNING... AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST zFLOOR OF
YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DONT
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, 8:56 PM CST	Severe Thunderstorm Warning	BMX	Lauderdale	64 min
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, 12:39 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.