Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 576, NWS Greenville-Spartanburg, SC

September 29, 2012Chester County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Sep 29, 2012, 6:11 PM EDT for Chester 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 outline as issued.

The facts

Issued: Sep 29, 2012, 6:11 PM EDT (22:11 UTC)
Expired: Sep 29, 2012, 6:54 PM EDT
In force: 43 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

County Chester County, SC

The radar

The Columbia radar (KCAE), 87 km from the middle of the area, began a volume at 22:13 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.2 hours before the alert went out and 178 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: 365 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 795 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

664 
WUUS52 KGSP 292211
SVRGSP
SCC023-292315-
/O.NEW.KGSP.SV.W.0576.120929T2211Z-120929T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
611 PM EDT SAT SEP 29 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CHESTER COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 715 PM EDT

* AT 611 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES
  WEST OF RICHBURG...OR 6 MILES EAST OF CHESTER...AND MOVING EAST AT
  30 MPH.

* THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  RICHBURG.
  FORT LAWN AND FISHING CREEK RESERVOIR.
  GREAT FALLS RESERVOIR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS SHOWING SIGNS OF ROTATION. IF THE ROTATION CONTINUES TO
STRENGTHEN...A TORNADO WARNING MAY BE REISSUED. SEVERE THUNDERSTORMS
CAN PRODUCE TORNADOES WITH LITTLE OR NO WARNING.

BRIEF DAMAGING WINDS WILL BLOW DOWN TREES AND POWER LINES OVER SMALL
AREAS. A BRIEF PERIOD OF LARGE HAIL IS ALSO POSSIBLE. SEEK SHELTER
INSIDE AN INTERIOR ROOM.

&&

LAT...LON 3467 8088 3465 8089 3458 8088 3466 8122
      3482 8118 3482 8089 3481 8088 3477 8086
      3474 8087 3470 8085
TIME...MOT...LOC 2211Z 289DEG 24KT 3473 8108

$$

HG

2 follow-up statements

688 
WWUS52 KGSP 292231
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
631 PM EDT SAT SEP 29 2012

SCC023-292315-
/O.CON.KGSP.SV.W.0576.000000T0000Z-120929T2315Z/
CHESTER SC-
631 PM EDT SAT SEP 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
CHESTER COUNTY UNTIL 715 PM EDT...

AT 631 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND 
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR 
RICHBURG...OR 13 MILES SOUTHWEST OF LANCASTER...MOVING EAST AT 30 
MPH.

THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  FISHING CREEK RESERVOIR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS SHOWING SIGNS OF ROTATION. IF THE ROTATION 
STRENGTHENS...A TORNADO WARNING MAY BE ISSUED. SEVERE THUNDERSTORMS 
CAN PRODUCE TORNADOES WITH LITTLE OR NO WARNING.

BRIEF DAMAGING WINDS WILL BLOW DOWN TREES AND POWER LINES OVER SMALL
AREAS. A BRIEF PERIOD OF LARGE HAIL IS ALSO POSSIBLE. SEEK SHELTER
INSIDE AN INTERIOR ROOM.

&&

LAT...LON 3467 8088 3465 8089 3458 8088 3463 8109
      3476 8103 3477 8086 3474 8087 3470 8085
TIME...MOT...LOC 2231Z 289DEG 24KT 3465 8096

$$

HG

991 
WWUS52 KGSP 292254
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
654 PM EDT SAT SEP 29 2012

SCC023-292303-
/O.CAN.KGSP.SV.W.0576.000000T0000Z-120929T2315Z/
CHESTER SC-
654 PM EDT SAT SEP 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CHESTER COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED EAST OF CHESTER 
COUNTY.

LAT...LON 3467 8088 3465 8089 3458 8088 3463 8109
      3476 8103 3477 8086 3474 8087 3470 8085
TIME...MOT...LOC 2253Z 289DEG 24KT 3460 8079

$$

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 Sep 29, 4:48 PM EDT, 1 hour 23 minutes earlier.

Area forecast discussion, Sep 29, 4:48 PM EDT, 1 hour 23 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
448 PM EDT SAT SEP 29 2012

.SYNOPSIS...
A COLD FRONT AND UPPER LEVEL TROUGH OF LOW PRESSURE WILL REMAIN
NEARLY STATIONARY ACROSS THE CAROLINAS INTO SUNDAY. A LOW PRESSURE
SYSTEM WILL THEN MOVE OUT OF THE GULF OF MEXICO LATE SUNDAY...
PROGRESSING NORTHWARD INTO MONDAY BRINGING UNSETTLED WEATHER FOR THE
EARLY PART OF THE WORK WEEK.

&&

.NEAR TERM /THROUGH SUNDAY/...
AS OF 435 PM EDT...CURRENTLY HAVE 2 LINES OF CONVECTION MOVING
ACROSS THE NORTHERN HALF OF THE CWFA WITH THE SOUTHERNMOST LINE MADE
UP OF SOME FAIRLY STRONG CELLS...SOME OF WHICH HAVE BECOME SEVERE
OVER THE PAST FEW HOURS. AS DRIER AIR BEGINS TO MAKE ITS WAY IN FROM
THE NW...WE EXPECT MOST OF THE TSRA ACTIVITY TO DIE DOWN EARLIER
THIS EVENING COMPARED TO YESTERDAY EVENING/NIGHT. CLOUD COVER WILL
LIKELY REMAIN BKN TO OVC FOR MOST OF THE SOUTHERN CWFA WITH SKIES
SCATTERING OUT TO THE NORTH AFTER 00Z OR SO.

PREVIOUS DISCUSSION...
ON SUNDAY...MODELS IN GOOD AGREEMENT ON SIGNIFICANT DRYING OF
PROFILES ACRS THE CWFA IN DEEP NWLY FLOW. THE SFC FNT SHUD BE TO OUR
SOUTH WITH DRY NELY LLVL FLOW ACRS THE AREA. THIS WILL BE A VERY
SHORT BREAK IN THE UNSETTLED WX...HOWEVER...AS A LOW PRES SYSTEM
DEVELOPS INVOF LWR MS VLY/NW GULF. SOME CIRRUS/CIRROSTRATUS WILL
SPREAD IN BY THE AFTN. OVERALL...TEMPS WILL BE NEAR NORMAL. MODELS
HAVE BACKED OFF THE TIMING OF GULF MOISTURE/UPGLIDE WORKING BACK
INTO THE AREA AHEAD OF THE GULF SYSTEM. MODELS TEND TO BE SLOW WITH
ONSET OF PRECIP AHEAD OF CYCLOGENESIS. THE FASTEST MODEL (GFS) SEEMS
TO HAVE 700-600 MB FRONTOGENESIS BANDING ACRS NRN GA/SRN UPSTATE BY
00Z MON. WHETHER THIS FORCING WILL BE ABLE TO OVERCOME DRY LLVL AIR
BY SUNSET IS UNCERTAIN. SO HAVE JUST SOME LOW-END CHC POPS ENTERING
THE SRN FRINGE OF THE CWFA THRU 23Z.

&&

.SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/...
AS OF 315 PM SAT...MDLS IN GOOD AGREEMENT ON A DEVELOPING WET CAD
SCENARIO FOR THE SHORT RANGE. HOWEVER...THEY DO DIFFER IN THE TIMING
OF ONSET AND DEPARTURE. A CLOSED UPPER LOW SITS AND SPINS OVER THE
MID SOUTH AS A BERMUDA HIGH STRENGTHENS OFF SHORE. THIS SETS UP A
DEEP SLY FLOW OVER THE AREA WITH SHORT WAVES MOVING THRU. AT THE
SFC...STRONG LOW ALONG THE GULF COAST MOVES TO THE AL/MS BORDER
MONDAY. THE GFS AND ECMWF ARE FASTER WITH THE NORTHWARD MOVEMENT OF
THE LOW AND ITS ASSOCIATED MOISTURE AND PRECIP. THE NAM IS SLOWER
WHILE THE SREF IS IN THE MIDDLE. WENT WITH A MIDDLE ROAD FOR ONSET
WITH LIKELY PRECIP BY MORNING WEST AND CHC EAST. PRECIP THEN SPREADS
OVER ALL THE AREA AS CAD STRENGTHENS THRU THE DAY MONDAY. HAVE GONE
WITH CAT POP ALL AREAS MONDAY AS IT LOOKS TO BE A WET DAY. THERE
WILL BE PLENTY OF ISENTROPIC LIFT OVER THE DEVELOPING CAD DOME.
ALSO...THERE IS DECENT QG FORCING AND UPPER DIFFLUENCE WITH THE
SYSTEM. HAVE LOWERED HIGHS TUE IN LINE WITH THE BIAS CORRECTED GRIDS
AND NAM DUE TO THE PRECIP AND DEVELOPING CAD. SOME INSTABILITY
DEVELOPS ON THE SRN EDGE OF THE CWFA AND THE SWRN MTNS...IN LINE
WITH A USUAL CAD PATTERN. HAVE INCLUDED THUNDER MENTION THESE AREAS.

THE TIMING TRENDS CONTINUE TUE AS THE SFC LOW MOVES INTO THE OH
VALLEY AND THE TRAILING COLD FRONT MOVES TOWARD THE AREA FROM THE
WEST. THE CAD REMAINS IN PLACE MON NITE BUT BEGINS TO ERODE OF THE
FASTER MDLS AND LINGERS ON THE SLOWER TUE. EITHER WAY...CAE POP
CONTINUES MON NITE WITH CONTINUED GOOD MOISTURE AND FORCING. THE
FASTER MDLS WORK A DRY SLOT INTO THE WRN CWFA BY THE END OF THE DAY
TUE. HAVE AGAIN SPLIT THE DIFFERENCE WITH POP AND END UP WITH LIKELY
EAST AND CHC WEST BY THE END OF THE DAY. TEMPS SHUD BE A LITTLE
WARMER AS CAD ERODES AND PRECIP BECOMES LESS WIDESPREAD. INSTABILITY
INCREASES THRU THE DAY AS WELL...SO TREND THE CHARACTER OF PRECIP TO
SHOWERS AND THUNDERSTORMS FOR THE AFTERNOON. ALTHOUGH SIGNIFICANT
AMOUNTS OF PRECIP ARE POSSIBLE...A CAD SCENARIOS USUALLY KEEPS
PRECIP AMOUNTS FROM REACHING EXCESSIVE LEVELS. THAT SAID...WILL HAVE
TO KEEP AN EYE OUT TUE AS THE CAD ERODES AND INSTABILITY INCREASES.
WILL ALSO HAVE TO WATCH FOR POSSIBLE QLCS STORMS IN THE STRONGLY
SHEARED AND WEAKLY UNSTABLE ENVIRONMENT.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
AS OF 330 PM SAT...GENERAL AGREEMENT CONTINUES BETWEEN THE 12Z RUNS
OF THE GFS AND ECMWF FOR THE MEDIUM RANGE. A CLOSED UPPER LOW OVER
THE MID SOUTH TUE NITE OPENS UP AND MOVES TO THE ERN GREAT LAKES BY
WED NITE. THE BERMUDA RIDGE BRIEFLY BUILDS OFF SHORE THU BEFORE A
RELATIVELY WEAK SRN STREAM SHORT WAVE MOVES OVER THE AREA FRI. A
STRONGER NRN STREAM SHORT WAVE MOVES ACROSS THE NRN TIER OF THE
CONUS SAT. AT THE SFC...SEASONAL AND DRY HIGH PRESSURE BUILDS IN
BEHIND THE DEPARTING SFC LOW AND ASSOCIATED SFC FRONT. THE HIGH
REMAINS CENTERED OVER THE AREA THU...THEN WEAKENS FRI AS A FRONT
APPROACHES FROM THE NW. THE GUIDANCE DEVIATES SAT AS THE GFS IS
FASTER WITH THE FRONT MOVING OVER THE AREA SAT AND PRECIP DEVELOPING
BEHIND THE FRONT. THE ECMWF HAS SLOWED THIS FRONTAL MOVEMENT DOWN BY
A FULL DAY. THEREFORE...HAVE GONE WITH LINGERING PRECIP TUE NITE
ENDING QUICKLY WED...A DRY FCST THU AND FRI WITH SLIGHT CHC POP FRI
NITE AND SAT. TEMPS WILL GENERALLY BE NEAR TO SLIGHTLY ABOVE NORMAL
UNTIL SAT WHEN THE FALL SLIGHTLY BELOW NORMAL.

&&

.AVIATION /21Z SATURDAY THROUGH THURSDAY/...
AT KCLT...DESPITE OVC100...THE AREA IS DESTABILIZING AHEAD OF AN E-W
ORIENTED LINE OF CONVECTION THAT IS SLOWLY DRIFTING SE. SOME OF THIS
ACTIVITY IS EXPECTED TO REACH KCLT AFTER 20Z...THEN PUSH OUT OF THE
AREA BY AROUND 00Z. A TEMPO GROUP FOR TS STILL LOOKS GOOD.
OTHERWISE...VFR WITH LGT WIND...FAVORING A SLY DIR UNTIL THE
CONVECTION PASSES BY IN THE 20-22Z TIME FRAME. OVERNIGHT...A FNTL
BNDRY WILL SAG SOUTH OF THE AREA...USHERING IN DRIER AIR FROM THE
NORTH. SOME OF THE GUIDANCE IS HINTING THAT THE BL WILL REMAIN MOIST
ENUF FOR SOME PATCHY FOG AND/OR STRATUS. USUALLY...CONDITIONS STAY
VFR BEHIND A BACKDOOR COLD FRONT. SO I DID NOT GO TOO PESSIMISTIC.
SUNDAY LOOKS VFR WITH CONTINUED NE WIND.

ELSEWHERE...A LINE OF SHRA/TSRA TO AFFECT KAVL AND KHKY WITHIN NEXT
HOUR. BEHIND THE LINE...A SCATTERED SHRA AND TSRA WILL CONTINUE TO
DEVELOP THRU REST OF AFTN. THE UPSTATE LOOKS LESS LIKELY TO SEE TS
ACTIVITY...BUT STILL DECENT COVERAGE OF -RA/SHRA. PRECIP WILL WANE
FAIRLY QUICKLY THIS EVENING...AS THE FNTL BNDRY SAGS SOUTH OF THE
AREA AND DRIER AIR WORKS IN FROM THE NORTH. GUIDANCE SHOWING SOME
LINGERING BL MOISTURE...SO HAVE SOME THREAT FOR PATCHY FOG/STRATUS
WHERE MIXING IS AT A MINIMUM. FLOW WILL BE UP THE FRENCH BROAD
VALLEY...SO DIFFICULT TO SAY HOW MUCH IF ANY RESTRICTIONS AT KAVL.
VFR CONDITIONS ARE EXPECTED SUNDAY WITH LIGHT NELY FLOW THRU MIDDAY.

OUTLOOK...A FAIRLY STRONG LOW PRESSURE SYSTEM WILL DEVELOP ACROSS
THE DEEP SOUTH LATE IN THE WEEKEND INTO MONDAY. MOISTURE IS EXPECTED
TO QUICKLY RETURN SUNDAY NIGHT...WITH PERIODS OF LOW CEILINGS AND
RAINFALL LIKELY ACROSS THE REGION INTO MID WEEK.

AN EXPERIMENTAL AVIATION FORECAST CONSISTENCY TABLE SHOWING THE
PERCENTAGE OF GUIDANCE MEMBERS AGREEING WITH THE SCHEDULED ISSUANCE
CATEGORY IS AVAILABLE AT FOLLOWING LINK (USE LOWER CASE)...

WWW.WEATHER.GOV/GSP/AVIATION/TABLES.HTM

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...NONE.
SC...NONE.

&&

SYNOPSIS...PAT
NEAR TERM...JPT
SHORT TERM...RWH
LONG TERM...RWH
AVIATION...JPT

Hazardous weather outlook, Sep 29, 3:43 PM EDT, 2 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
343 PM EDT SAT SEP 29 2012

GAZ010-017-018-026-028-029-NCZ068>072-082-507>510-SCZ001>014-019-
301945-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-CLEVELAND-LINCOLN-
GASTON-MECKLENBURG-CABARRUS-UNION NC-RUTHERFORD MOUNTAINS-
GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-
ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD-
343 PM EDT SAT SEP 29 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT
NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...TONIGHT.

SCATTERED THUNDERSTORMS WILL MOVE ACROSS THE SOUTHERN FOOTHILLS
AND PIEDMONT OF NORTH CAROLINA...AND MUCH OF THE UPSTATE AND
NORTHEAST GEORGIA THROUGH THIS EVENING. SOME OF THE THUNDERSTORMS
WILL BECOME SEVERE PRODUCING DAMAGING WIND GUSTS AND POSSIBLY HAIL.
THE OTHER MAIN THREAT AREA WILL BE ALONG AND SOUTH OF INTERSTATE
85 IN NORTH CAROLINA AND THE EASTERN UPSTATE. THE STORMS SHOULD
TAPER OFF AND MOVE TO THE EAST LATE THIS EVENING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE
HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE.

NCZ033-035>037-048>053-056>059-062>065-501>506-301945-
AVERY-ALEXANDER-IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-
BUNCOMBE-CATAWBA-ROWAN-GRAHAM-NORTHERN JACKSON-MACON-
SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-CALDWELL MOUNTAINS-
GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-MCDOWELL MOUNTAINS-
EASTERN MCDOWELL-
343 PM EDT SAT SEP 29 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA AND
WESTERN NORTH CAROLINA.

.DAY ONE...TONIGHT.

SCATTERED THUNDERSTORMS WILL MOVE ACROSS THE MOUNTAINS...NORTHERN
FOOTHILLS...AND NORTHWEST PIEDMONT OF NORTH CAROLINA THROUGH THIS
EVENING. THE MAIN THREAT FROM THESE STORMS WILL BE CLOUD TO GROUND
LIGHTNING. THE STORMS SHOULD TAPER OFF AND MOVE TO THE EAST LATE
THIS EVENING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

In the hours before

Special weather statement, Sep 29, 3:11 PM EDT, 3 hours before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
311 PM EDT SAT SEP 29 2012

NCZ056-065-068>070-504-507>510-292000-
CATAWBA-CLEVELAND-EASTERN POLK-GASTON-GREATER BURKE-GREATER
RUTHERFORD-HENDERSON-LINCOLN-POLK MOUNTAINS-RUTHERFORD MOUNTAINS-
311 PM EDT SAT SEP 29 2012

...STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN HENDERSON...NORTHERN
CLEVELAND...NORTHWESTERN GASTON...POLK...RUTHERFORD...SOUTHERN
BURKE...SOUTHWESTERN CATAWBA AND WESTERN LINCOLN COUNTIES THROUGH 400
PM EDT...

AT 311 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES SOUTHEAST OF
PLEASANT GROVE TO 7 MILES SOUTHWEST OF THERMAL CITY TO 3 MILES EAST
OF MOUNTAIN HOME...MOVING SOUTHEAST AT 15 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  CASAR...
  LAKE ADGER...
  RUTHERFORDTON...
  VALE...
  BOSTIC...
  FOREST CITY...

PENNY SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THESE STORMS.

LAT...LON 3538 8127 3520 8188 3518 8200 3520 8228
      3518 8237 3521 8239 3519 8243 3543 8261
      3544 8255 3542 8254 3544 8253 3548 8228
      3546 8225 3548 8223 3554 8198 3552 8197
      3554 8185 3559 8182 3568 8150

HG

Special weather statement, Sep 29, 3:55 PM EDT, 2 hours 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
355 PM EDT SAT SEP 29 2012

NCZ072-292030-
CABARRUS-
355 PM EDT SAT SEP 29 2012

...STRONG THUNDERSTORMS WILL AFFECT CABARRUS COUNTY THROUGH 430 PM
EDT...

AT 356 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES SOUTHWEST OF
ROCKWELL TO 3 MILES SOUTHWEST OF MOUNT PLEASANT TO HARRISBURG...
MOVING EAST AT 20 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  MOUNT PLEASANT...
  MIDLAND...

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THESE STORMS.

LAT...LON 3522 8048 3528 8067 3533 8069 3536 8071
      3540 8056 3550 8054 3550 8030 3549 8030

HG

Special weather statement, Sep 29, 4:10 PM EDT, 2 hours 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
410 PM EDT SAT SEP 29 2012

SCZ007-292045-
SPARTANBURG-
410 PM EDT SAT SEP 29 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN SPARTANBURG COUNTY
THROUGH 445 PM EDT...

AT 411 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR CAMPOBELLO...OR 12 MILES SOUTHEAST OF
COLUMBUS...MOVING EAST AT 20 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  BOILING SPRINGS SC...
  COWPENS...

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.

LAT...LON 3488 8183 3503 8222 3519 8215 3519 8211
      3512 8184 3506 8181 3504 8181 3503 8179
      3500 8178

HG

Special weather statement, Sep 29, 4:26 PM EDT, 1 hour 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
426 PM EDT SAT SEP 29 2012

NCZ068-508-SCZ007-008-292100-
CHEROKEE-CLEVELAND-GREATER RUTHERFORD-SPARTANBURG-
426 PM EDT SAT SEP 29 2012

...STRONG THUNDERSTORMS WILL AFFECT CHEROKEE...NORTHEASTERN
SPARTANBURG...SOUTHEASTERN RUTHERFORD AND SOUTHWESTERN CLEVELAND
COUNTIES THROUGH 500 PM EDT...

AT 426 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM CLIFFSIDE TO CHESNEE
TO 3 MILES NORTHWEST OF MAYO...MOVING SOUTHEAST AT 20 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  MAYO...
  BOILING SPRINGS NC...
  THICKETTY...
  EARL...

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THESE STORMS.

LAT...LON 3520 8145 3503 8152 3491 8166 3507 8204
      3519 8191 3536 8184

HG

Special weather statement, Sep 29, 4:31 PM EDT, 1 hour 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
431 PM EDT SAT SEP 29 2012

SCZ007-292100-
SPARTANBURG-
431 PM EDT SAT SEP 29 2012

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL SPARTANBURG COUNTY
THROUGH 500 PM EDT...

AT 431 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR BOILING SPRINGS SC...OR 6 MILES NORTH OF
SPARTANBURG...MOVING SOUTHEAST AT 20 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  MAYO...
  SPARTANBURG...
  COWPENS...
  PACOLET...

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.

LAT...LON 3498 8209 3514 8199 3508 8181 3504 8181
      3503 8179 3494 8176 3491 8171 3483 8179

HG

Special weather statement, Sep 29, 4:55 PM EDT, 1 hour 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
455 PM EDT SAT SEP 29 2012

SCZ008-009-292130-
CHEROKEE-YORK-
455 PM EDT SAT SEP 29 2012

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL CHEROKEE AND
SOUTHWESTERN YORK COUNTIES THROUGH 530 PM EDT...

AT 455 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 2 MILES EAST OF THICKETTY...OR 4 MILES SOUTHWEST
OF GAFFNEY...MOVING SOUTHEAST AT 25 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  HICKORY GROVE...

DIME SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.

LAT...LON 3484 8146 3487 8149 3487 8153 3488 8153
      3487 8154 3489 8158 3488 8161 3495 8176
      3501 8178 3513 8170 3499 8129 3482 8139
      3482 8147

HG

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 29, 3:18 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Spartanburg	57 min
Sep 29, 4:10 PM EDT	Special Weather Statement	GSP	Spartanburg	35 min
Sep 29, 4:26 PM EDT	Special Weather Statement	GSP	Cherokee	34 min
Sep 29, 4:31 PM EDT	Special Weather Statement	GSP	Spartanburg	29 min
Sep 29, 4:55 PM EDT	Special Weather Statement	GSP	Cherokee	35 min
Sep 29, 5:12 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, Chester, Union, York	63 min
Sep 29, 5:19 PM EDT	Tornado Warning	GSP	Cherokee, Chester, Union, York	41 min
Sep 29, 6:25 PM EDT	Special Weather Statement	GSP	Spartanburg	35 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2012 Every severe thunderstorm warning in 2012

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.