Alert archive / South Carolina / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 94, NWS Greenville-Spartanburg, SC

June 20, 2000Greenville County, Laurens County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 20, 2000, 5:15 PM EDT for Greenville County, Laurens County, South Carolina. It was in force for 60 min. 3 reports 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: Jun 20, 2000, 5:15 PM EDT (21:15 UTC)
Expired: Jun 20, 2000, 6:15 PM EDT
In force: 60 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

Counties Greenville County, SC, Laurens County, SC

The radar

The Greer radar (KGSP), 22 km from the middle of the area, began a volume at 21:15 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
Jun 20, 5:25 PM EDT	Thunderstorm Wind 50 E	Simpsonville, SC
Jun 20, 5:55 PM EDT	Thunderstorm Wind 50 E	Hickory Tavern, SC
Jun 20, 5:55 PM EDT	Hail 0.75	Gray Court, SC

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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.3 hours before the alert went out and 259 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: 94 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 919 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 34 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.

093 
WUUS52 KGSP 202116
SVRGSP
SCC045-059-202215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
515 PM EDT TUE JUN 20 2000

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN GREENVILLE COUNTY IN UPSTATE SOUTH CAROLINA
  NORTHERN LAURENS COUNTY IN UPSTATE SOUTH CAROLINA

* UNTIL 615 PM EDT

* AT 515 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 13 MILES SOUTHEAST
  OF GREENVILLE...OR ABOUT 3 MILES WEST OF FOUNTAIN INN...MOVING EAST
  AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GRAY COURT AT 540 PM EDT
  LAURENS AT 605 PM EDT
  ORA AT 610 PM EDT

SEVERE THUNDERSTORM WINDS CAN REACH SPEEDS OF 60 TO 100 MPH. THESE
WINDS BLOW DOWN TREES...POWER LINES...AND SEVERELY DAMAGE MOBILE
HOMES AND SOMETIMES BUILDINGS. VERY LARGE OR WIND-DRIVEN HAIL CAN 
INJURE ANYONE CAUGHT OUTSIDE.  A SIMILAR STORM CAUSED CONSIDERABLE 
WIND DAMAGE IN GREENVILLE.

$$
BWM/WAJ

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 Jun 20, 2:00 PM EDT, 3 hours 15 minutes earlier.

Area forecast discussion, Jun 20, 2:00 PM EDT, 3 hours 15 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
200 PM EDT TUE JUN 20 2000

SOME INTERESTING WEATHER FEATURES FOR THE AREA THIS EVENING. A COLD
FRONT WAS HOLDING NEARLY STATIONARY ACROSS THE AREA THIS AFTERNOON
FROM JUST SOUTH OF THE CHARLOTTE METROPOLITAN AREA TO NEAR
RUTHERFORDTON AND THEN NORTHWARD THRU THE NC MTNS. NORTH OF THE
FRONT...IN THE NORTH CAROLINA PIEDMONT AND FOOTHILLS...TEMPERATURES
WERE IN THE LOW AND MIDDLE 70S.  MIDDLE AND UPPER 80S WERE COMMON
SOUTH OF THE FRONT WITH UPPER 70S AND LOWER 80S WEST OF THE FRONT IN
THE MTNS.

AN UPPER DISTURBANCE WILL PUSH ACROSS THE CWA LATE THIS AFTN AND
THIS EVENING ACCOMPANIED BY SCATTERED SHOWERS AND TSTMS. THE SHOWERS
BEGAN OVER EXTREME SOUTHWEST NC AND NE GA EARLY IN THE AFTERNOON AND
WILL INCREASE IN INTENSITY AND COVERAGE AS THEY SPREAD EAST THROUGH
THIS EVENING. WITH THE LACK OF WIND SHEAR AND STEEP LAPSE RATES OVER
THE AREA...I EXPECT LITTLE ORGANIZED SEVERE BUT ENOUGH INSTABILITY
IS PRESENT FOR AN ISOLATED DOWNBURST OR LARGE HAIL EVENT.

I WILL CONTINUE CHANCE OF SHOWERS AND TSTMS WEDNESDAY DUE TO GOOD
INSTABILITY AND PLENTIFUL MOISTURE...KNOWING THERE WILL BE A FEW
LOCAL BOUNDARIES TO PROVIDE LOW LEVEL CONVERGENCE TO SET OFF MORE
SCATTERED SHOWERS AND THUNDERSTORMS. HOWEVER NEXT SHORT WAVE WITH
SUPPORTING UPLIFT LOOKS TO BE COMING IN WEDNESDAY NIGHT AND EARLY
THURSDAY AFTER DIURNAL COOLING. HIGH PRESSURE AND A DRIER AIR MASS
WILL BUILD INTO THE CWA FOR THE WEEKEND.

PRELIMINARY NUMBERS FOR COORDINATION...
AVL 64/83/63/83 5/4/4/4
CLT 68/86/68/87 6/4/4/4
GSP 69/88/69/89 5/4/4/4

.GSP...NONE.

RBN

In the hours before

Local storm report, Jun 20, 5:07 PM EDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
507 PM EDT TUE JUN 20 2000

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

545 PM     GREENVILLE                SC   WIND DAMAGE
06/20/00   GREENVILLE                     GREENVILLE PD REPORTED
                                          NUMEROUS TREES/LINES DOWN
                                          ACROSS CITY.  COUNTY
                                          REPORTED SOME URBAN
                                          FLOODING NEAR CITY.

JONES
NNNN

Local storm report, Jun 20, 5:07 PM EDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED TIME
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
507 PM EDT TUE JUN 20 2000

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

445 PM     GREENVILLE                SC   WIND DAMAGE
06/20/00   GREENVILLE                     GREENVILLE PD REPORTED
                                          NUMEROUS TREES/LINES DOWN
                     J                     ACROSS CITY.  COUNTY
                                          REPORTED SOME URBAN
                                          FLOODING NEAR CITY.

JONES
NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 4:35 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	40 min
Jun 20, 6:35 PM EDT	Flash Flood Warning	GSP	Laurens	115 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.