Alert archive / South Carolina / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 32, NWS Columbia, SC

April 8, 2000Sumter County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Apr 8, 2000, 3:09 PM EDT for Sumter County, South Carolina. It was in force for 51 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
Apr 8, 2000, 3:09 PM EDT (19:09 UTC)
Expired
Apr 8, 2000, 4:00 PM EDT
In force
51 min
Issued by
NWS Columbia, SC
Area
Whole counties

County Sumter County, SC

The radar

The Columbia radar (KCAE), 68 km from the middle of the area, began a volume at 19:12 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
Apr 8, 3:30 PM EDTThunderstorm Wind 60 ESumter, SCSheriff reported widespread trees and powerlines down. SKYWARN spotter reported tower blown down.

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

Charleston AFB, SC (KCHS), launched 12:00Z, 7.2 hours before the alert went out and 118 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 2000-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 394 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 2000-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.193958Sfc1 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
394 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
560 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
85 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 
WUUS52 KCAE 081911
SVRCAE
SCC085-082000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
309 PM EDT SAT APR 8 2000

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SUMTER COUNTY.

* UNTIL 400 PM EDT.

* AT 307 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM MOVING INTO WESTERN SUMTER COUNTY. THIS STORM
  IS MOVING EAST AT 50 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  MILLWOOD...SUMTER AT 320 PM EDT.
  MULBERRY AT 325 PM EDT.
  EAST SUMTER...SOUTH SUMTER AT 330 PM EDT.

THIS IS A DANGEROUS STORM WITH DAMAGING WINDS. STAY INDOORS AWAY FROM
WINDOEWS.

REPORT ANY HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY SHERIFF
OR TO THE NATIONAL WEATHER SERVICE.

MWC

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Columbia, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 8, 3:00 PM EDT, 9 minutes earlier.

Area forecast discussion, Apr 8, 3:00 PM EDT, 9 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA SC
300 PM SAT APR 8 2000

FRONT CONTS TO MOVE ENE AT AROUND 30 KT ACROSS THE CWA ATTM. NARROW
LINE OF SHRA AND A RUMBLE OR TWO OF THUNDER WILL CONT TO MOVE INTO
MORE UNSTABLE ATMS E OF THE CWA. PK WIND OF 49 MPH HERE AT THE
AIRPORT WITH ABOUT 15 MINS OF HEAVY RAIN IS ALL WE GOT HERE. ALMOST
.25 IN OF RAIN WITH THE STORM. WILL GO WITH CLEARING CONDS AND
COOLING TEMPS AS AGS HAS DROPPED INTO THE UPPER 50S ALREADY BEHIND
FRONT. STRONGEST CAA WILL OCCUR OVERNIGHT. TEMPS WILL STAY UP
OVERNIGHT AS WINDS WILL BE IN THE 15 TO 25 KT RANGE FOR MOST OF THE
NIGHT. WAA WILL BEGIN LATE SUN AND INTO SUN NIGHT, SO FREEZING TEMPS
ARE NOT IN THE PICTURE. MON HAS A REBOUND OF TEMPS AS FLOW BECOMES
ZNL AS RETURN SFC FLOW FROM THE S WILL INC.

EXTENDED...
MRF A LITTLE SLOWER WITH FRONT MOVING IN HERE ON LATE WED PM.
CANADIAN PUSHES IT OFF THE CST AS THE MRF, UKMET AND NOGAPS TRY TO
STALL THE FRONT OVER HEAD ON THURS. ECMWF STALLS THE FRONT SOUTH OF
US, WHICH CLIMO WOULD CONCUR WITH. WILL KEEP THE CHANCE OF SHRA IN
HERE ON THURS.

PRELIM CCF...
CAE UU 39/64/42/75/49 00000
AGS UU 36/67/38/77/47 00000

.CAE...WIND ADVISORY FOR AREA LAKES TONIGHT.

BARLOW

In the hours before

Special weather statement, Apr 8, 11:20 AM EDT, 3 hours 49 minutes before
SCZ015-016-018-020-021-022-025-026-027-028-029-030-031-035-036-
037-038-041-GAZ040-063-064-065-077-082215-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
1120 AM EDT SAT APR 8 2000

THE SEVERE WEATHER OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES
IN SOUTH CAROLINA:

AIKEN         BAMBERG       BARNWELL      CALHOUN       CHESTERFIELD
CLARENDON     EDGEFIELD     FAIRFIELD     KERSHAW       LANCASTER
LEE           LEXINGTON     MCCORMICK     NEWBERRY      ORANGEBURG
RICHLAND      SALUDA        SUMTER

THE SEVERE WEATHER OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES
IN GEORGIA:

BURKE         COLUMBIA      LINCOLN       MCDUFFIE      RICHMOND

...A FEW THUNDERSTORMS THIS AFTERNOON...
A COLD FRONT CROSSING THE AREA THIS AFTERNOON WILL TRIGGER SHOWERS
AND A FEW THUNDERSTORMS. THE GREATEST THREAT FROM THE STORMS WILL
BE WIND GUSTS TO 45 MPH AND HAIL BETWEEN NOON AND 5 PM. THE FRONT
WILL BE MOVE OF THE AREA BY 5 PM...THEREFORE ENDING THE THREAT OF
STORMS.

CURRENT DATA DOES NOT FAVOR SEVERE THUNDERSTORM DEVELOPMENT.
THEREFORE...EMERGENCY MANAGEMENT AND SPOTTER ACTIVATION SHOULD
NOT BE REQUIRED.

PLEASE SEE THE SHORT TERM FORECAST FROM NATIONAL WEATHER SERVICE
IN COLUMBIA FOR THE LATEST SHORT TERM FORECAST INFORMATION.
THE NWWS ID IS CAENOWCAE AND THE WMO HEADER IS FPUS72 KCAE.

LM

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 2:52 PM EDTSevere Thunderstorm WarningCAECalhoun, Orangeburg38 min
Apr 8, 2:52 PM EDTSevere Thunderstorm WarningCAERichland38 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2000Every severe thunderstorm warning in 2000

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.