Alert archive / South Carolina / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 27, NWS Greenville-Spartanburg, SC

May 2, 2000Laurens County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 2, 2000, 6:12 PM EDT for Laurens County, South Carolina. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 2, 2000, 6:12 PM EDT (22:12 UTC)
Expired: May 2, 2000, 7:00 PM EDT
In force: 48 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

County Laurens County, SC

The radar

The Greer radar (KGSP), 49 km from the middle of the area, began a volume at 22:08 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.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.2 hours before the alert went out and 261 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1669 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 49 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 KGSP 022212
SVRGSP
SCC059-022300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
612 PM EDT TUE MAY 2 2000

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN LAURENS COUNTY IN UPSTATE SOUTH CAROLINA

* UNTIL 700 PM EDT

* AT 612 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 14 MILES NORTH OF
  LAURENS...OR ABOUT 9 MILES NORTH OF ORA...MOVING SOUTH AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GRAY COURT AT 620 PM EDT
  ORA AT 625 PM EDT
  HICKORY TAVERN AT 645 PM EDT-
  LAURENS AT 650 PM EDT

PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FOR
LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY
RAIN CAN OCCUR WITH ANY SEVERE THUNDERSTORM.

$$
RB

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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at May 2, 1:50 PM EDT, 4 hours 22 minutes earlier.

Area forecast discussion, May 2, 1:50 PM EDT, 4 hours 22 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
150 PM EDT TUE MAY 2 2000

LOCATION OF SFC FRONT AGREES WELL WITH THE 12Z ETA. FRONT IS PROGGED
TO DEVELOP ALONG BARRIER COMPONENT AND SLIDE JUST S AND W OF THE
CWA BY WED MORNING. HIGH CONTINUES TO BUILD INTO THE REGION...
PUSHING SFC CONVERGENCE WELL W OF THE AREA WED AFTN THROUGH THU.
THIS RAISES SOME INTERESTING QUESTIONS AS THERE ARE RATHER LARGE
MODEL DIFFERENCES IN THE QPF FIELDS.

THE FIRST PERIOD LOOKS REASONABLE AS THE ETA GENERATES CONVECTIVE
PCPN ALONG ZONE OF STRONG SFC CONVERGENCE AS THE BACK DOOR FRONT
DROPS INTO THE NC PIEDMONT. THIS CONVECTION MOVES SE...ALONG THE
SFC BNDRY...OVERNIGHT. WEAK H5 MINOR WAVE AND RETREATING H3 JET
LEND SUPPORT FROM SOME KIND OF RELATIVELY WEAK MCS. LAPSE RATES ARE
NOT VERY STEEP...THOUGH LVLV MOISTURE IS INCREASING. CAPES AVERAGING
AROUND 1000 OVER MOST OF THE CWA ATTM. THUS...SOME CONVECTION IS
POSSIBLE ALMOST ANYWHERE THIS EVENING. WL KEEP AN EYE ON TRENDS...BUT
PLAN TO HAVE HIGHEST POPS ERN ZONES...AND LOWER POPS W.

BY WED MOST OF THE BNDRY LAYER FLOW OVER THE CWA IS E TO ENE...AND
RATHER BRISK IF THE ETA IS CORRECT. HARD TO IMAGINE MUCH CONVECTION
WL DEVELOP WHERE THERE IS NO SFC CONVERGENCE AND PRACTICALLY NO
FORCING ALOFT AS UPPER RIDGE ROLLS OVER THE AREA. THINK MOST
CONVECTION WOULD DEVELOP ON SFC CONVERGENCE WELL W OF THE CWA. THE
MTNS...HOWEVER...SHOULD SEE SOME TSRA DEVELOP W/DIFFERENTIAL HEATING
AND AS THEY WL BE ABOVE THS COLD POOL. ETA HAS LLVL DWPTS POOL
ALONG AND N OF THE BNDRY W/M60 DWPTS FEEDING ANYTHING THAT DOES GO
IN THE HIGHER ELEVATIONS. WL UNDERCUT TEMPS AS WE WL HAVE NE FLOW
AND A CLOUD DECK OVER THE COLD POOL. 12Z SFC TRAJECTORIES HAVE THE
SOURCE REGION FOR THE AIRMASS NOT TOO FAR TO THE N...SO WL ONLY
UNDERCUT RAFS BY 5 OR 6 DEG UNLESS OTHER OFFICES OBJECT.

ETA DEVELOPS A HUGE AREA OF RAIN OVER THE SW CWA WED NGHT AND KEEPS
IT THERE THROUGH THU. WE/D BE LOOKING AT 2 INCHES OF RAIN IF IT WAS
RIGHT. THE AVN IS FURTHER SW AND THE UKMET SIMPLY HAS A LOT LESS
PCPN. AGAIN...THINK MOST CONVECTION WL FORM ALONG SFC CONVERGENCE W
OF CWA...WITH ONLY THE MTN ELEVATIONS REALLY SEEING ANY SIG PCPN.
HARD TO COMPLETELY ARGUE AGAINST THE ETA HOWEVER...AND WL BUMP POPS
UP TO GOOD CHANCE SW HALF OF CWA WED NGHT AND THU.

STILL LOOKS WARM WITH AFTN AND EVENING TSRA IN THE EXTENDED.

PRELIMINARY NUMBERS:

AVL 53/72/54/73/56 3355
CLT 57/73/59/76/59 5333
GSP 58/74/60/77/60 3344

.GSP...NONE.

MCAVOY

In the hours before

Local storm report, May 2, 5:16 PM EDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
516 PM EDT TUE MAY 02 2000

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

512 PM     LYMAN AND DUNCAN          SC   .50 INCH HAIL
05/02/00   SPARTANBURG                    PEA AND MARBLE SIZE HAIL
                                          REPORTED BY SPOTTERS.

RB
NNNN

Local storm report, May 2, 5:19 PM EDT, 53 minutes before

ZCZC CAEWRKLSR 000
TTAA00 KGSP 022119

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
519 PM EDT TUE MAY 02 2000

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

517 PM     5 WEST OF SPARTANBURG     SC   1.00 INCH HAIL
05/02/00   SPARTANBURG                    HAM SPOTTER REPORT OF
                                          QUARTER SIZE HAIL AT
                                          INTERSTATE 85 AND HIGHWAY
                                          290.

TJB
NNNN

Local storm report, May 2, 5:36 PM EDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
536 PM EDT TUE MAY 02 2000

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

525 PM     NEAR GREER                SC   WIND DAMAGE
05/02/00   GREENVILLE                     NWS EMPLOYEE REPORTED
                                          TREES DOWN ON HIGHWAY 290
                                          AND 101 NEAR GREER AND BURNS
                                          HIGH SCHOOL.

TJB
NNNN

Local storm report, May 2, 6:03 PM EDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
603 PM EDT TUE MAY 2 2000

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

601 PM     LINCOLNTON                NC   1.00 INCH HAIL
05/02/00   LINCOLN                        HAM RADIO REPORT OF
                                          QUARTER-SIZED HAIL JUST
                                          EAS}T OF HIGHWAY 321 IN
                                          LINCOLNTON.

NNNN
BURRUS

Local storm report, May 2, 6:07 PM EDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
607 PM EDT TUE MAY 2 2000

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

605 PM     GREER                     SC   0.75 INCH HAIL
05/02/00   SPARTANBURG                    DIME-SIZED HAIL FELL
                                          AT THE NWS OFFICE AT
                                          GREENVILLE-SPARTANBURG
                                          AIRPORT.

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 2, 4:44 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	46 min
May 2, 4:59 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	46 min
May 2, 5:11 PM EDT	Flash Flood Warning	GSP	Greenville, Spartanburg	3 hr
May 2, 5:28 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	47 min
May 2, 5:40 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	35 min
May 2, 7:54 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	51 min
May 2, 7:57 PM EDT	Flash Flood Warning	GSP	Greenville, Spartanburg	2 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.