Alert archive / South Carolina / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 113, NWS Columbia, SC

November 11, 2002Lexington County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Nov 11, 2002, 7:37 AM EST for Lexington County, South Carolina. It was in force for 53 min. 3 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
Nov 11, 2002, 7:37 AM EST (12:37 UTC)
Expired
Nov 11, 2002, 8:30 AM EST
In force
53 min
Issued by
NWS Columbia, SC
Area
Counties, with a storm outline in the text

County Lexington County, SC

The radar

The Columbia radar (KCAE), 19 km from the middle of the area, began a volume at 12:40 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Nov 11, 7:45 AM ESTThunderstorm Wind 50 MIrmo, SCNWS obs site at Flotilla Island recorded a 50kt gust.
Nov 11, 8:12 AM ESTThunderstorm Wind 50 ELexington, SCSKYWARN spotter reported trees down on Shull Island.
Nov 11, 8:15 AM ESTThunderstorm Wind 50 ECountywide, SCSheriff reported scattered trees down around 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Nov 11, 5:40 AM ESTTornado WatchSPC5 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 0.6 hours before the alert went out and 165 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, Charleston AFB, SC at 12:00Z on 2002-11-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1057 joules per kilogram.LCLLFCEL10008507005003002001001 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, Charleston AFB, SC at 12:00Z on 2002-11-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 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
1057 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
720 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
135 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.8

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KCAE 111237
SVRCAE
SCC063-111330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
736 AM EST MON NOV 11 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
    LEXINGTON COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 830 AM EST.

* AT 735 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES WEST OF RED BANK..MOVING EAST AT
  45 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
    RED BANK.
    LEXINGTON.
    OAK GROVE.
    SEVEN OAKS.

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. REMEMBER...SEVERE
THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCED
WARNING.

THIS STORM WILL PRODUCE DAMAGING WINDS IN EXCESS OF 55 MPH.

LAT...LON 3396 8153 3381 8149 3375 8132 3367 8118
          3377 8100 3406 8112 3420 8135

JB/GL

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 11, 5:27 AM ESTTornado WarningCAEMcCormick33 min
Nov 11, 6:11 AM ESTTornado WarningCAEMcCormick49 min
Nov 11, 6:36 AM ESTTornado WarningCAENewberry54 min
Nov 11, 7:05 AM ESTSevere Thunderstorm WarningCAEEdgefield55 min
Nov 11, 7:07 AM ESTSevere Thunderstorm WarningCAELancaster38 min
Nov 11, 7:12 AM ESTTornado WarningCAESaluda48 min
Nov 11, 7:20 AM ESTSevere Thunderstorm WarningCAEFairfield40 min
Nov 11, 7:26 AM ESTTornado WarningCAENewberry64 min
Nov 11, 7:26 AM ESTTornado WarningCAENewberry64 min
Nov 11, 7:50 AM ESTSevere Thunderstorm WarningCAERichland55 min
Nov 11, 7:59 AM ESTSevere Thunderstorm WarningCAELancaster46 min
Nov 11, 8:03 AM ESTSevere Thunderstorm WarningCAEFairfield27 min
Nov 11, 8:07 AM ESTSevere Thunderstorm WarningCAEFairfield23 min
Nov 11, 8:14 AM ESTSevere Thunderstorm WarningCAEKershaw46 min
Nov 11, 8:26 AM ESTSevere Thunderstorm WarningCAEChesterfield64 min
Nov 11, 8:49 AM ESTSevere Thunderstorm WarningCAESumter56 min
Nov 11, 8:53 AM ESTSevere Thunderstorm WarningCAELee52 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 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; radar from the NEXRAD Level II archive.