Alert archive / Alabama / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 79, NWS Mobile, AL

March 29, 1997Clarke County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 29, 1997, 7:21 PM CST for Clarke County, Alabama. It was in force for 69 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, 7:21 PM CST (01:21 UTC)
Expired
Mar 29, 1997, 8:30 PM CST
In force
69 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Clarke County, AL

What was reported inside it

TimeReportWhereRemark
Mar 29, 7:25 PM CSTHail 0.88Grove Hill, 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, 1.4 hours before the alert went out and 194 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 1997-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 1997-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2435 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
72 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 KMOB 300122 RRA
SVRMOB
ALC025-300230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
721 PM CST SAT MAR 29 1997
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  830 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST ALABAMA
 
   ...CLARKE COUNTY
 
MOBILE DOPPLER WEATHER RADAR SHOWS A DEVELOPING SEVERE THUNDERSTORM NEAR
GROVE HILL. THIS STORM WILL LIKELY CONTAIN LARGE HAIL. THE STORM WILL
MOVE ACROSS GROVE HILL BY 730 PM. THE STORM WAS MOVING EAST AT 15 MPH.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 6:59 PM CSTSevere Thunderstorm WarningMOBButler61 min
Mar 29, 9:54 PM CSTSevere Thunderstorm WarningMOBCrenshaw66 min
Mar 30, 2:28 PM CSTSevere Thunderstorm WarningMOBMonroe62 min
Mar 30, 3:17 PM CSTSevere Thunderstorm WarningMOBClarke, Monroe58 min
Mar 30, 3:41 PM CSTSevere Thunderstorm WarningMOBWilcox64 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1997Every 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.