Alert archive / South Carolina / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 152, NWS Greenville-Spartanburg, SC

June 30, 2002Anderson County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 30, 2002, 8:09 PM EDT for Anderson 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: Jun 30, 2002, 8:09 PM EDT (00:09 UTC)
Expired: Jun 30, 2002, 9:00 PM EDT
In force: 51 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

County Anderson County, SC

The radar

The Greer radar (KGSP), 56 km from the middle of the area, began a volume at 00:10 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
Jun 30, 8:15 PM EDT	Thunderstorm Wind 50 E	Anderson, SC	Trees and powerlines were blown down in the Stonehaven Community. A fallen tree crushed a carport. Trees and powerlines were also blown down along Lake Hartwell.

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 00:00Z, 0.2 hours before the alert went out and 214 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: 1351 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 1191 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

546 
WUUS52 KGSP 010009
SVRGSP
SCC007-010100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
809 PM EDT SUN JUN 30 2002

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN ANDERSON COUNTY IN UPSTATE SOUTH CAROLINA

* UNTIL 900 PM EDT

* AT 809 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 8 MILES WEST OF
  ANDERSON...OR ABOUT 5 MILES NORTHEAST OF SADLERS CREEK STATE
  PARK...MOVING SOUTHWEST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SADLERS CREEK STATE PARK AT 830 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 THUNDERSTORM.

$$
HG

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 30, 3:53 PM EDT, 4 hours 16 minutes earlier.

Area forecast discussion, Jun 30, 3:53 PM EDT, 4 hours 16 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
353 PM EDT SUN JUN 30 2002

ISOLATED TO SCATTERED CONVECTION ACROSS THE CWFA TODAY. WILL
DETERMINE JUST BEFORE ISSUANCE WHETHER TO INCLUDE ISOLATED OR SCT
EVENING CONVECTION. ACTIVITY SHOULD DIE SHORTLY AFTER SUNSET.

LOOKS LIKE A TYPICAL SUMMERTIME PATTERN THE NEXT SEVERAL DAYS. CWFA
REMAINS JUST EAST OF THE UPPER RIDGE AXIS WITH A SURFACE TROF
MEANDERING ACROSS THE AREA. WEAK IMPULSES ROTATE SOUTH DOWN THE
RIDGE ACROSS THE AREA. LOW LEVEL MOISTURE REMAINS HIGH WITH SOMEWHAT
DEEPER MOISTURE RETURNING TUESDAY. DIFFERENTIAL HEATING AND TROF TO
PROVIDE THE LOW LEVEL CONVERGENCE. ATMOS REMAINS UNSTABLE WITH NO
APPRECIABLE MID LEVEL WARMING NOTED. HARD TO PINPOINT WHERE AFT
CONVECTION WILL OCCUR...SO WILL MENTION LOW CHC POP ACROSS ALL CWFA.
NOTHING TO INDICATE MUCH ORGANIZATION...SO WILL JUST INCLUDE FOR AFT.

SFC FNT MOVES SOUTH OF THE CWFA SATURDAY. ATMOS REMAINS MOIST AND
UNSTABLE UNTIL THEN. WILL INCLUDE CHC AFT POP ALL AREAS THRU FRI.
WILL KEEP SAT AND SUN DRY FOR NOW AS DRIER AIR MOVES IN.

GSP   69  91  70  91 /  20  30  20  30
AND   69  91  70  91 /  20  30  20  30
CLT   69  90  70  92 /  10  30  20  30
HKY   68  89  68  90 /  10  30  20  30
AVL   64  85  65  86 /  20  30  20  30

.GSP...
GA...NONE.
NC...NONE.
SC...NONE.

RWH

In the hours before

Local storm report, Jun 30, 6:48 PM EDT, 1 hour 21 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED FOR WIND LOCATION
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
648 PM EDT SUN JUN 30 2002

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

640 PM     WOODRUFF                  SC   .88 INCH HAIL
06/30/02   SPARTANBURG

640 PM     1 E MOORE                 SC   WIND DAMAGE
06/30/02   SPARTANBURG                    TREES DOWN NEAR I-26 AND
                                          HIGHWAY 221 INTERSECTION

630 PM     GREENVILLE                SC   .88 INCH HAIL
06/30/02   GREENVILLE

LANE/HG

Local storm report, Jun 30, 7:11 PM EDT, 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
711 PM EDT SUN JUN 30 2002

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

700 PM     5 N SIMPSONVILLE          SC   .75 INCH HAIL
06/30/02   GREENVILLE                     SPOTTER REPORTS DIME SIZE
                                          HAIL AND WIND GUSTS 45 TO
                                          50 MPH.

HG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 3:49 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Pickens	41 min
Jul 1, 4:27 PM EDT	Flash Flood Warning	GSP	Greenville	108 min
Jul 1, 4:34 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	41 min
Jul 1, 5:04 PM EDT	Severe Thunderstorm Warning	GSP	Laurens, Spartanburg	41 min
Jul 1, 5:42 PM EDT	Severe Thunderstorm Warning	GSP	Union	48 min
Jul 1, 6:17 PM EDT	Severe Thunderstorm Warning	GSP	York	43 min
Jul 1, 6:42 PM EDT	Severe Thunderstorm Warning	GSP	Laurens, Union	48 min
Jul 1, 7:07 PM EDT	Severe Thunderstorm Warning	GSP	York	53 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2002 Every severe thunderstorm warning in 2002

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.