Alert archive / South Carolina / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 55, NWS Columbia, SC

May 25, 2000Lancaster County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 25, 2000, 7:32 PM EDT for Lancaster County, South Carolina. It was in force for 28 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: May 25, 2000, 7:32 PM EDT (23:32 UTC)
Expired: May 25, 2000, 8:00 PM EDT
In force: 28 min
Issued by: NWS Columbia, SC
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Lancaster County, SC

The radar

The Columbia radar (KCAE), 92 km from the middle of the area, began a volume at 23:30 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, 7:55 PM EDT	Hail 0.75	Kershaw, SC	Sheriff reported dime size hail.

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 12:00Z, 11.5 hours before the alert went out and 207 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: 2013 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 827 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -28 m²/s²
0-3 km storm-relative helicity: -30 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.

500 
WUUS52 KCAE 252333
SVRCAE
SCC057-260000-

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

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

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

* UNTIL 800 PM EDT.

* AT 725 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER ELGIN...OR ABOUT 7 MILES SOUTHEAST OF
  LANCASTER...MOVING EAST AT 30 MPH.

THIS IS A DANGEROUS STORM WITH LARGE HAIL. 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.

LAT...LON 3480 8085 3458 8072 3455 8054 3463 8042
          3473 8050

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, 2:20 PM EDT, 5 hours 12 minutes earlier.

Area forecast discussion, May 25, 2:20 PM EDT, 5 hours 12 minutes before

SCZ015-016-018-020>022-025>031-035>038-041-GAZ040-063>065-077-260620-

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

TROUGH OVR WRN NC TO NRN GA WILL MOVE SWD TONIGHT INTO THE CWA. 12Z
REAL TIME SOUNDINGS FOR FFC AND CHS AS WELL AS FCST SOUNDINGS FOR
OUR CWA SHOW SOME LOW LVL MOISTURE WITH MID LEVEL DRYING ABOVE. EVEN
WHEN MODIFIED THE SOUNDINGS HAVE CAPES FROM 2000-3000... LI FROM -6
TO -8...AND DECENT TOTALS AND SWEAT INDICES. HOWEVERE THESE
SOUNDINGS DO HAVE A RATHER STRONG LOW LEVEL CAP WHICH WILL HAVE TO
BE OVERCOME BY GOOD LIFT. BELIEVE ENOUGH SFC CONVERGENCE AND LIFT
WILL BE PROVIDED BY THE SFC TROUGH AND PERHAPS AIDED BY SOME OUTFLOW
BOUNDARIES FROM ACTIVITY IN SOUTHERN NC. ALL OF THESE FAVORABLE
CONVECTIVE PARAMETERS AS WELL AS DECENT COOLING ALOFT ARE MOST
PREVALENT IN THE NRN PTN OF OUR CWA FOR SCT TSTMS THIS EVENING.

THE LATEST ETA RUN SHOWS TROF REMAINING ACROSS SRN CWA ON FRIDAY
THEN MOVING N OF THE AREA ON FRIDAY NIGHT. THIS WILL FAVOR BEST
CHANCE OF CONVECTION OVER SOUTHER PTN OF CWA FRIDAY. BY LATE FRIDAY
THE MID LEVEL RIDGE BUILDS ALONG WITH WARMING TEMPS ALOFT.

WILL GENERALLY ACCEPT ETA MODEL GUIDANCE TEMPS WITH SLIGHT COOLING
ADJ FOR SFC BOUNDARY MOVING THRU NRN PTN OF THE CWA.

FOR THE EXTENDED PERIOD UPPER RIDGE IN OUR AREA WILL BE REPLACED BY
TROUGH/GOOD SHORT WAVE AND SFC FNT ON SUNDAY AND MONDAY EXITING EWD
ON TUESDAY.

FCSTID = 24
CAE   70  90  66  92 /  30  20  20  20
AGS   70  91  66  93 /  30  30  20  20
SSC   70  90  66  92 /  30  20  20  20
OGB   70  91  66  93 /  30  30  20  20

.CAE...
GA...SEVERE THUNDERSTORM WATCH UNTIL 800 PM EDT THURSDAY FOR ZONES
GAZ040.
SC...SEVERE THUNDERSTORM WATCH UNTIL 800 PM EDT THURSDAY FOR ZONES
SCZ018-020-025-026.

BLP

In the hours before

Local storm report, May 25, 5:05 PM EDT, 2 hours 27 minutes before

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

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

447 PM     20 SE COLUMBIA            SC   1.00 INCH HAIL
05/25/00   RICHLAND                       REPORTED BY CONGAREE
                                          SWAMP NATIONAL MONUMENT
                                          HQ

BC

Local storm report, May 25, 5:17 PM EDT, 2 hours 15 minutes before

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

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

507 PM     MANNING                   SC   .75 INCH HAIL
05/25/00   CLARENDON                      REPORT BY CLARENDON
                                          COUNTY SHERIFF DEPT.

502 PM     TURBEVILLE                SC   1.00 INCH HAIL
05/25/00   CLARENDON                      REPORT BY CLARENDON
                                          COUNTY SHERIFF DEPT.

BC

Local storm report, May 25, 5:19 PM EDT, 2 hours 13 minutes before

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

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

516 PM     ALCOLU                    SC   1.00 INCH HAIL
05/25/00   CLARENDON                      REPORT BY CLARENDON
                                          COUNTY EPD

BC

Local storm report, May 25, 5:23 PM EDT, 2 hours 9 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, 1 hour 6 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, 49 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

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 3:23 PM EDT	Severe Thunderstorm Warning	CAE	Lee	37 min
May 25, 3:42 PM EDT	Severe Thunderstorm Warning	CAE	Lancaster	33 min
May 25, 4:14 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon	46 min
May 25, 4:21 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield	24 min
May 25, 4:42 PM EDT	Severe Thunderstorm Warning	CAE	Richland, Sumter	48 min
May 25, 4:53 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon	37 min
May 25, 5:28 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon	47 min
May 25, 7:54 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield	36 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.