Alert archive / Alabama / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 13, NWS Mobile, AL

March 12, 2002Covington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 12, 2002, 11:55 AM CST for Covington County, Alabama. It was in force for 35 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Mar 12, 2002, 11:55 AM CST (17:55 UTC)
Expired
Mar 12, 2002, 12:30 PM CST
In force
35 min
Issued by
NWS Mobile, AL
Area
Counties, with a storm outline in the text

County Covington County, AL

What was reported inside it

TimeReportWhereRemark
Mar 12, 11:55 AM CSTHail 1.75Red Level, ALGolfball hail was reported near Red level. No damage was reported.
Mar 12, 12:00 PM CSTThunderstorm Wind 50 EAndalusia, ALTrees and power lines were blown down near Andalusia. The high winds also damaged a couple of outbuildings.

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

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 5.9 hours before the alert went out and 102 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, Eglin AFB/Valpar, FL at 12:00Z on 2002-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 261 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Eglin AFB/Valpar, FL at 12:00Z on 2002-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 square meters per square second.1939587897Sfc1 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
261 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
449 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
171 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 
WUUS54 KMOB 121755
SVRMOB
ALC039-121830-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1154 AM CST TUE MAR 12 2002

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA

* UNTIL 1230 PM CST

* AT 1154 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR AND PUBLIC 
  REPORTS INDICATED A SEVERE THUNDERSTORM 2 MILES EAST OF            
  SOUTH...MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CLEARVIEW...EODA BY NOON CST
  ROSE HILL BY 1205 PM CST

STRONG DAMAGING WIND...LARGE HAIL...AND HEAVY RAIN ARE LIKELY WITH
THIS STORM.  IF IN THE PATH OF THIS STORM...TAKE COVER IN A STURDY 
SHELTER UNTIL THE STORM HAS PASSED.

LAT...LON 3142 8665 3115 8647 3138 8623 3149 8645
          3151 8658

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 12, 10:09 AM CSTSpecial Marine WarningMOB2 hr
Mar 12, 10:09 AM CSTSpecial Marine WarningMOB2 hr
Mar 12, 12:03 PM CSTSevere Thunderstorm WarningMOBCrenshaw27 min
Mar 12, 12:42 PM CSTSevere Thunderstorm WarningMOBCovington18 min
Mar 12, 1:37 PM CSTSpecial Marine WarningMOB23 min
Mar 12, 1:57 PM CSTSevere Thunderstorm WarningMOBMobile48 min
Mar 12, 2:22 PM CSTSpecial Marine WarningMOB68 min
Mar 12, 2:30 PM CSTSevere Thunderstorm WarningMOBBaldwin30 min
Mar 12, 2:55 PM CSTSevere Thunderstorm WarningMOBBaldwin50 min
Mar 12, 3:52 PM CSTSpecial Marine WarningMOB113 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2002Every severe thunderstorm warning in 2002

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.