Alert archive / South Carolina / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 166, NWS Greenville-Spartanburg, SC

July 1, 2002York County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 1, 2002, 6:17 PM EDT for York County, South Carolina. It was in force for 43 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: Jul 1, 2002, 6:17 PM EDT (22:17 UTC)
Expired: Jul 1, 2002, 7:00 PM EDT
In force: 43 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

County York County, SC

The radar

The Greer radar (KGSP), 95 km from the middle of the area, began a volume at 22:21 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, 10.3 hours before the alert went out and 169 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: 1220 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 1019 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 73 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.

709 
WUUS52 KGSP 012217
SVRGSP
SCC091-012300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
616 PM EDT MON JUL 1 2002

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN YORK COUNTY IN UPSTATE SOUTH CAROLINA

* UNTIL 700 PM EDT

* AT 616 PM EDT...SEVERE WEATHER SPOTTERS REPORTED A SEVERE
  THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 5 MILES SOUTHEAST
  OF ROCK HILL...OR ABOUT 4 MILES NORTHWEST OF CATAWBA...MOVING
  SOUTHWEST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CATAWBA AT 625 PM EDT.

THIS STORM PRODUCED DIME SIZED HAIL ON THE SOUTHEAST SIDE OF ROCK
HILL AT 610 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.

$$
BPM/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 Jul 1, 2:30 PM EDT, 3 hours 47 minutes earlier.

Area forecast discussion, Jul 1, 2:30 PM EDT, 3 hours 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
230 PM EDT MON JUL 1 2002

TSRA ARE BEGINNING TO DEVELOP ALONG THE EASTERN ESCARPMENT OF THE
BLUE RIDGE. CAPES ARE AOA 3000 AND WET BULB ZEROS ARE UNDER 10KFT.
SFC DWPTS HAVE HARDLY MIXED OUT AT ALL TDA AND LLVL MOISTURE FLUX
DIVERGENCE HAS BEEN BULLSEYED OVER THE NC MTNS FOR SEVERAL HRS NOW.

IN ADDITION...A COUPLE WEAK H5 WAVES WL CROSS THE REGION FROM NE TO
SW OVERNGHT. WHAT THIS MEANS IS THAT CONVECTION SHOULD KEEP GOING
WELL INTO THE NGHT. AS FOR 1ST PERIOD THE AREAL COVERAGE...ITS TOO
SOON TO REALLY TELL. WL INITIALLY PENCIL IN LIKELY POPS OVER THE SW
CWA AND CHANCE POPS N TNGT...THOUGH IF THE VORT OVER WV CONTINUES TO
ORGANIZE CONVECTION...WE COULD BE FACING SOMETHING ORGANIZED IN THE
NRN ZONES LATE.

TUE LOOKS VERY SIMILAR TO TDA. WEAK SHEAR AIXS WL CONTINUE TO BE
ORIENTED NE TO SW ACROSS CWA. LLVL MOISTURE CONVERGENCE WL CONTINUE
OVER THE CWA TO THE SE OF THESE UPPER WAVES DURING THE DAY...W/GOOD
AREAL COVERAGE LIKELY AGAIN IN THE AFTN...ESPECIALLY OVER AND NEAR
THE HIGHER TERRAIN.

BY WED...DEEP MID CONTINENTAL RIDGE WL BEGIN TO PUSH FARTHER TO THE
EAST. THE COLD TROF E OF THE RIDGE SHOULD STILL BE STRONG ENUF FOR
TSRA IN THE AFTN...BUT SUSPECT THAT AREAL COVERAGE WL NOT BE AS
GREAT.

DEEP ELY FLOW ON THE 4TH. NO LLVL CONVERGENCE TO SPEAK OF
ANYMORE...AND SUBSIDENCE AROUND THE RIDGE SHOULD REALLY EAT INTO OUR
INSTABILITY. WE MAY SEE HARDLY ANYTHING THU...BUT WL HOLD ON TO 30
POPS.

FRIDAY THROUGH MONDAY...
FOR FRI...AVN PUSHES A BACK DOOR COOL FRONT INTO AT LEAST THE
NORTHERN HALF OF THE CWA. ECMWF SHOW A SIMILAR BUT WEAKER FEATURE SO
WILL PRESERVE CHC POPS OF AFTERNOON TO EVENING TS/SH. FRONT SHOULD
WASH OUT SAT AND SUN AND WILL KEEP FORECAST DRY WITH ONLY SILENT 20
POPS. MONDAY...REGION SHOULD BE UNDER THE INFLUENCE OF HIGH PRESSURE
AND WILL KEEP DRY AS WELL. TEMPS SHOULD BE OVER MEX VALUES AS PLAINS
RIDGE IS EXPECTED TO BUILD IN FASTER THAN THE AVN
ADVERTISES...THEREFORE WILL KEEP TEMPS GENERALLY HIGHER THAN
GUIDANCE.

FCSTID = 14
GSP   72  92  72  92 /  60  30  30  30
AND   72  92  72  92 /  60  30  30  30
CLT   71  92  71  92 /  30  30  30  30
HKY   70  89  70  89 /  40  40  40  30
AVL   66  85  66  85 /  60  50  50  40

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

MCAVOY/NED

In the hours before

Local storm report, Jul 1, 3:58 PM EDT, 2 hours 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
358 PM EDT MON JUL 01 2002

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

356 PM     GREENVILLE                SC   .75 INCH HAIL
07/01/02   GREENVILLE                     SPOTTER REPORTED NEAR BOB
                                          JONES UNIV.

LAMB

Local storm report, Jul 1, 4:20 PM EDT, 1 hour 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
420 PM EDT MON JUL 01 2002

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

410 PM     5 NNW FRANKLIN            NC   WIND DAMAGE
07/01/02   MACON                          TREES REPORTED DOWN BY
                                          MACON EOC.

LAMB

Local storm report, Jul 1, 4:53 PM EDT, 1 hour 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
453 PM EDT MON JUL 01 2002

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

355 PM     2 E CLARKESVILLE          GA   WIND DAMAGE
07/01/02   HABERSHAM                      COUNTY COMMUNICATIONS
                                          CENTER REPORTS A TREE
                                          BLOWN OVER AND DAMAGE TO
                                          A HOUSE ON ANTIOCH CHURCH
                                          ROAD.

HG

Local storm report, Jul 1, 5:01 PM EDT, 1 hour 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
501 PM EDT MON JUL 01 2002

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

455 PM     3 N SWANNANOA             NC   .88 INCH HAIL
07/01/02   BUNCOMBE                       SPOTTER REPORTS NICKEL
                                          SIZE HAIL.

HG

Local storm report, Jul 1, 5:21 PM EDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
521 PM EDT MON JUL 01 2002

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

515 PM     2 SW FOREST CITY          NC   WIND DAMAGE
07/01/02   RUTHERFORD                     SPOTTER REPORTS TREES
                                          BLOWN DOWN ON NEWTON COLE
                                          ROAD.

HG

Local storm report, Jul 1, 5:26 PM EDT, 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
526 PM EDT MON JUL 01 2002

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

504 PM     CHARLOTTE                 NC   1.00 INCH HAIL
07/01/02   MECKLENBURG                    SPOTTER REPORTS QUARTER
                                          SIZE HAIL ON NORTH TRYON
                                          STREET.

HG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 8:09 PM EDT	Severe Thunderstorm Warning	GSP	Anderson	51 min
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, 6:42 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.