Alert archive / South Carolina / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 58, NWS Columbia, SC

May 25, 2000Sumter County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 25, 2000, 9:33 PM EDT for Sumter County, South Carolina. It was in force for 27 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: May 25, 2000, 9:33 PM EDT (01:33 UTC)
Expired: May 25, 2000, 10:00 PM EDT
In force: 27 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 01:31 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

Time	Report	Where	Remark
May 25, 9:45 PM EDT	Thunderstorm Wind 50 E	Sumter, SC	Sheriff reported trees down on west end of 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.

Issued	Product	Office	Lasted
May 25, 3:45 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 1.6 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-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: 5760 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1089 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 2.6
Supercell composite: 19.9

Open this sounding in Storm Lab

The text

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

112 
WUUS52 KCAE 260134
SVRCAE
SCC085-260200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
933 PM EDT THU MAY 25 2000

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

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

* UNTIL 1000 PM EDT.

* AT 926 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM ABOUT 13 MILES SOUTHWEST OF SUMTER...MOVING 
  EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MILLWOOD...SOUTH SUMTER...SUMTER AT 945 PM EDT
  EAST SUMTER...MULBERRY AT 950 PM EDT

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

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

CDL/BC

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 May 25, 8:55 PM EDT, 38 minutes earlier.

Area forecast discussion, May 25, 8:55 PM EDT, 38 minutes before

SCZ015-016-018-020>022-025>031-035>038-041-GAZ040-063>065-077-261243-

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA, SC
855 PM EDT THU MAY 25 2000

WEAK LOW PRESSURE MOVING EAST ALONG A TROUGH OF LOW PRESSURE PROVIDED
THE FOCUS FOR WIDESPREAD CONVECTION DURING THE LATE AFTERNOON AND
EVENING. SHORTWAVE ALOFT EXPECTED TO MOVE EAST AROUND MIDNIGHT AS
AIRMASS SLOWLY STABILIZES. WILL CARRY SCATTERED SHOWERS AND
THUNDERSTORMS UNTIL MIDNIGHT THEN PARTLY CLOUDY. TEMPERATURES LOOK
OK.

FCSTID = 30
CAE   70  90  66  92 /  50  20  20  20
AGS   70  91  66  93 /  40  30  20  20
SSC   70  90  66  92 /  50  20  20  20
OGB   70  91  66  93 /  50  30  20  20

.CAE...
GA...NONE.
SC...NONE.

RCC

In the hours before

Local storm report, May 25, 5:23 PM EDT, 4 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA, SC
523 PM EDT THU MAY 25 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

520 PM     PAXVILLE                  SC   .75 INCH HAIL
05/25/00   CLARENDON                      REPORT BY HAM RADIO
                                          SPOTTER

BC

Local storm report, May 25, 6:26 PM EDT, 3 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA, SC
626 PM EDT THU MAY 25 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

610 PM     AMITY                     GA   .75 INCH HAIL
05/25/00   LINCOLN                        REPORT FROM SHERIFF DEPT.

BC

Local storm report, May 25, 6:43 PM EDT, 2 hours 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA, SC
643 PM EDT THU MAY 25 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

615 PM     8 NW APPLING              GA   .75 INCH HAIL
05/25/00   COLUMBIA                       REPORT FROM HAM RADIO
                                          SPOTTER AT WINFIELD HILL

BC

Local storm report, May 25, 8:15 PM EDT, 1 hour 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA, SC
815 PM EDT THU MAY 25 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

755 PM     2 MI N OF KERSHAW         SC   .75 INCH HAIL
05/25/00   LANCASTER                      REPORT FROM SHERIFF DEPT.

BLP

Local storm report, May 25, 8:22 PM EDT, 1 hour 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA, SC
822 PM EDT THU MAY 25 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

818 PM     3 MI NNW HANCOCK          SC   .88 INCH HAIL
05/25/00   LANCASTER                      REPORT FROM SKYWARN
                                          SPOTTER

BLP

Local storm report, May 25, 9:29 PM EDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA, SC
929 PM EDT THU MAY 25 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

925 PM     3 S COLUMBIA              SC   WIND DAMAGE
05/25/00   RICHLAND                       NUMEROUS TREES DOWN.
                                          REPORTED BY RICHLAND
                                          COUNTY SHERIFF DEPT.

BC

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 9:10 PM EDT	Severe Thunderstorm Warning	CAE	Richland	35 min
May 25, 9:57 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Sumter	48 min
May 25, 9:57 PM EDT	Severe Thunderstorm Warning	CAE	Orangeburg	48 min
May 26, 7:52 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Orangeburg	38 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2000 Every 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.