Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 430, NWS Greenville-Spartanburg, SC

July 18, 2012Greenville County, Spartanburg County, South Carolina; Henderson County, Polk County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 18, 2012, 3:53 PM EDT for Greenville County, Spartanburg County, South Carolina; Henderson County, Polk County, North Carolina. It was in force for 67 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 18, 2012, 3:53 PM EDT (19:53 UTC)
Expired
Jul 18, 2012, 5:00 PM EDT
In force
67 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Henderson County, NC, Polk County, NC, Greenville County, SC, Spartanburg County, SC

The radar

The Greer radar (KGSP), 35 km from the middle of the area, began a volume at 19:56 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

TimeReportWhereRemark
Jul 18, 4:15 PM EDTTSTM WND DMG1 Wnw Tigerville, SCTREE DOWN AT FALLING LEAF RD
Jul 18, 4:20 PM EDTHAIL 15 W Columbus, NCQUARTER SIZE HAIL NEAR MILE MARKER 60 ON I-26

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 22 minutes after it went out.

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, 7.9 hours before the alert went out and 237 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2012-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1738 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2012-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1738 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
1050 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
-4 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.

879 
WUUS52 KGSP 181953
SVRGSP
NCC089-149-SCC045-083-182100-
/O.NEW.KGSP.SV.W.0430.120718T1953Z-120718T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
353 PM EDT WED JUL 18 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN HENDERSON COUNTY IN WESTERN NORTH CAROLINA...
  SOUTHWESTERN POLK COUNTY IN WESTERN NORTH CAROLINA...
  NORTHEASTERN GREENVILLE COUNTY IN UPSTATE SOUTH CAROLINA...
  NORTHWESTERN SPARTANBURG COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 500 PM EDT

* AT 353 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 
  NORTH SALUDA RESERVOIR...OR 8 MILES SOUTHWEST OF COLUMBUS...AND 
  MOVING SOUTHEAST AT 10 MPH. A SECOND SEVERE THUNDERSTORM WAS 
  DEVELOPING JUST NORTH OF SALUDA.

* THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  TRYON.
  LANDRUM AND TIGERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LARGE HAIL CAN CAUSE MAJOR PROPERTY DAMAGE...ESPECIALLY TO VEHICLES.
DAMAGING WINDS MAY BLOW DOWN SCATTERED TREES AND POWER LINES. SEEK
SHELTER INSIDE AN INTERIOR ROOM.

TO REPORT DAMAGING WINDS...HAIL...OR FLOODING THROUGH OUR AUTOMATED
REPORTING SYSTEM...CALL TOLL FREE...1 8 7 7...6 3 3...6 7 7 2.

&&

LAT...LON 3526 8217 3511 8209 3500 8236 3511 8244
      3528 8249 3535 8229
TIME...MOT...LOC 1953Z 327DEG 10KT 3518 8232

$$

HG
3 follow-up statements
540 
WWUS52 KGSP 182021
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
421 PM EDT WED JUL 18 2012

NCC089-182031-
/O.CAN.KGSP.SV.W.0430.000000T0000Z-120718T2100Z/
HENDERSON NC-
421 PM EDT WED JUL 18 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HENDERSON COUNTY
IS CANCELLED...

AT 421 PM...THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED 
SOUTH OF HENDERSON COUNTY.

LAT...LON 3526 8217 3511 8209 3500 8236 3511 8244
      3517 8244 3521 8239 3518 8237 3521 8235
      3524 8236 3527 8235 3529 8229
TIME...MOT...LOC 2021Z 332DEG 14KT 3521 8221 3514 8228
          3509 8240

$$

NCC149-SCC045-083-182100-
/O.CON.KGSP.SV.W.0430.000000T0000Z-120718T2100Z/
SPARTANBURG SC-POLK NC-GREENVILLE SC-
421 PM EDT WED JUL 18 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
GREENVILLE...SOUTHWESTERN POLK AND NORTHWESTERN SPARTANBURG COUNTIES
UNTIL 500 PM EDT...

AT 421 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE 
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE 
LOCATED ALONG A LINE EXTENDING FROM COLUMBUS TO NORTH SALUDA 
RESERVOIR TO TIGERVILLE...MOVING SOUTHEAST AT 15 MPH.

SEVERE THUNDERSTORMS WILL IMPACT LOCATIONS NEAR...
  LANDRUM.
  GOWENSVILLE.
  TIGERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LARGE HAIL CAN CAUSE MAJOR PROPERTY DAMAGE...ESPECIALLY TO VEHICLES.
DAMAGING WINDS MAY BLOW DOWN SCATTERED TREES AND POWER LINES. SEEK
SHELTER INSIDE AN INTERIOR ROOM.

TO REPORT DAMAGING WINDS...HAIL...OR FLOODING THROUGH OUR AUTOMATED
REPORTING SYSTEM...CALL TOLL FREE...1 8 7 7...6 3 3...6 7 7 2.

&&

LAT...LON 3526 8217 3511 8209 3500 8236 3511 8244
      3517 8244 3521 8239 3518 8237 3521 8235
      3524 8236 3527 8235 3529 8229
TIME...MOT...LOC 2021Z 332DEG 14KT 3521 8221 3514 8228
          3509 8240

$$

HG
173 
WWUS52 KGSP 182039
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
439 PM EDT WED JUL 18 2012

NCC149-182049-
/O.CAN.KGSP.SV.W.0430.000000T0000Z-120718T2100Z/
POLK NC-
439 PM EDT WED JUL 18 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN POLK COUNTY IS
CANCELLED...

AT 439 PM...THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED 
SOUTH OF POLK COUNTY.

LAT...LON 3511 8244 3516 8244 3517 8243 3519 8233
      3519 8232 3520 8228 3519 8214 3512 8209
      3511 8209 3503 8228 3500 8237
TIME...MOT...LOC 2039Z 331DEG 17KT 3516 8214 3507 8224
          3502 8236

$$

SCC045-083-182100-
/O.CON.KGSP.SV.W.0430.000000T0000Z-120718T2100Z/
SPARTANBURG SC-GREENVILLE SC-
439 PM EDT WED JUL 18 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
GREENVILLE AND NORTHWESTERN SPARTANBURG COUNTIES UNTIL 500 PM EDT...

AT 439 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM LANDRUM TO 6 MILES SOUTHWEST OF
LANDRUM TO TIGERVILLE...MOVING SOUTHEAST AT 20 MPH.

SEVERE THUNDERSTORMS WILL AFFECT MAINLY RURAL AREAS OF NORTHEASTERN
GREENVILLE AND NORTHWESTERN SPARTANBURG COUNTIES...INCLUDING THE 
FOLLOWING LOCATIONS...CAMPOBELLO AND AREAS SOUTH OF TIGERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LARGE HAIL CAN CAUSE MAJOR PROPERTY DAMAGE...ESPECIALLY TO VEHICLES.
DAMAGING WINDS MAY BLOW DOWN SCATTERED TREES AND POWER LINES. SEEK
SHELTER INSIDE AN INTERIOR ROOM.

TO REPORT DAMAGING WINDS...HAIL...OR FLOODING THROUGH OUR AUTOMATED
REPORTING SYSTEM...CALL TOLL FREE...1 8 7 7...6 3 3...6 7 7 2.

&&

LAT...LON 3511 8244 3516 8244 3517 8243 3519 8233
      3519 8232 3520 8228 3519 8214 3512 8209
      3511 8209 3503 8228 3500 8237
TIME...MOT...LOC 2039Z 331DEG 17KT 3516 8214 3507 8224
          3502 8236

$$

HG
489 
WWUS52 KGSP 182056
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
456 PM EDT WED JUL 18 2012

SCC045-083-182106-
/O.EXP.KGSP.SV.W.0430.000000T0000Z-120718T2100Z/
SPARTANBURG SC-GREENVILLE SC-
456 PM EDT WED JUL 18 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GREENVILLE AND
NORTHWESTERN SPARTANBURG COUNTIES WILL EXPIRE AT 500 PM EDT...

AT 456 PM...THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS 
WEAKENED BELOW SEVERE LEVELS.

LAT...LON 3511 8244 3516 8244 3517 8243 3519 8233
      3519 8232 3520 8228 3519 8214 3512 8209
      3511 8209 3503 8228 3500 8237
TIME...MOT...LOC 2056Z 331DEG 17KT 3509 8209 3500 8219
          3495 8231

$$

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 Jul 18, 2:55 PM EDT, 58 minutes earlier.

Area forecast discussion, Jul 18, 2:55 PM EDT, 58 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
255 PM EDT WED JUL 18 2012

.SYNOPSIS...
HIGH PRESSURE WILL WEAKEN AND SHIFT SOUTH OVER THE NEXT FEW DAYS.
THIS WILL ALLOW A FRONTAL BOUNDARY OVER THE OHIO VALLEY TO DROP
SOUTH...INTO THE CAROLINAS LATE FRIDAY. THE FRONT WILL REMAIN
OVER OR JUST SOUTH OF THE REGION THROUGH THE WEEKEND AND DISSIPATE
ON MONDAY.

&&

.NEAR TERM /THROUGH THURSDAY/...
AT 230 PM EDT WEDNESDAY...THE WEAK UPPER LOW OVER GA WILL LIFT NORTH
AND FILL OVER SC TONIGHT AND FRIDAY...WHILE A TROUGH TO THE NORTH
AMPLIFIES. CONVECTION DEVELOPING THIS AFTERNOON IS EXPECTED TO
INCREASE IN COVERAGE...THEN GRADUALLY DIMINISH THIS EVENING AS
HEATING ABATES. MODELS SOUNDINGS ARE SUPPORTIVE OF GUSTY WINDS A ND
HAIL...WITH SLOW MOVING STORMS PRODUCING LOCALLY HEAVY RAINFALL.
MINIMUM TEMPERATURES WILL BE SLIGHTLY ABOVE NORMAL IN A MOIST AIR
MASS.

IMPULSES MOVING THROUGH THE BASE DO THE AMPLIFYING TROUGH ON
THURSDAY WILL SUPPORT GREATER POPS THAN IN PREVIOUS DAYS. ACTIVITY
IS EXPECTED TO GET GOING EARLIER THAN USUAL IN THE MOUNTAINS...WITH
SUBSTANTIAL COVERAGE BY MIDDAY. ONCE AGAIN... MODEL SOUNDINGS ARE
SUPPORTIVE OF PULSE SEVERE THUNDERSTORMS...AND LIGHT STEERING
CURRENTS WILL SUPPORT HEAVY RAINFALL ACCUMULATIONS. A COLD FRONT
APPROACHING FORM THE NORTH WILL STILL BE IN VA...TOO FAR AWAY TO
HAVE AN IMPACT THROUGH THURSDAY AFTERNOON. MAXIMUM TEMPERATURES WILL
BE ABOVE NORMAL AS TROUGH AMPLIFICATION AND FALLING HEIGHTS ALOFT
TAKE PLACE LATER IN THE DAY. THE COMBINATION OF WARMTH AND MOISTURE
WILL DRIVE THE HEAT INDEX TO NEAR 100 AGAIN ON THURSDAY IN THE
PIEDMONT...SEVERAL DEGREES BELOW THE ADVISORY CRITERIA OF 105
DEGREES.

&&

.SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/...
AS OF 250 PM WEDNESDAY...EXPECT CONVECTION THU NITE TO BE MAINLY
DIURNAL...BUT ISOLATED CELLS COULD LINGER IN THE MTNS OVERNIGHT.
LOWS WILL BE ABOVE NORMAL.

A SHORT WAVE DIVES INTO THE OH VALLEY FRIDAY PUSHING A COLD FRONT
SOUTH TOWARD THE AREA. THIS WAVE SLOWLY MOVES SOUTH AND EAST TOWARD
THE VA TIDEWATER AND MID-ATLANTIC AREA. THE SFC FRONT WILL SLOWLY
PUSH INTO THE AREA ON SATURDAY. MOISTURE WILL BE COPIOUS AHEAD OF
AND ALONG THE FRONT. QG FORCING WILL BE WEAK...BUT LOW LEVEL
CONVERGENCE ALONG THE FRONT WILL BE DECENT...ALONG WITH UPPER LEVEL
DIVERGENCE ASSOCIATED WITH AN UPPER JET. THEREFORE...EXPECT NUMEROUS
SHOWERS AND THUNDERSTORMS FRIDAY...WITH NUMEROUS COVERAGE I-85 AND
SOUTH AND GOOD CHC NORTH SATURDAY. CONVECTION WILL STILL SHOW A
DIURNAL TREND...BUT WILL NOT DIMINISH UNTIL LATE AT NITE. WITH A
VERY MOIST AIR MASS AND SLOW MOVING STORMS...HEAVY RAIN WILL BE
POSSIBLE.

HIGHS FRIDAY STILL NEAR TO SLIGHTLY ABOVE NORMAL...THEN DROPS BELOW
NORMAL SATURDAY. LOWS FRIDAY NITE ABOVE NORMAL.

&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
AS OF 1245 PM WEDNESDAY...THE LATEST GUIDANCE KEEPS A STATIONARY
FRONT OVER THE AREA SUNDAY. THE FRONT BEGINS TO WASH OUT MONDAY AS
THE BERMUDA HIGH POKES BACK INTO THE REGION FROM THE EAST.
HOWEVER...A SHEAR AXIS AND A BAND OF DEEP MOISTURE WILL REMAIN OVER
THE AREA MONDAY IN THE WEAKNESS BETWEEN THE BERMUDA HIGH AND THE
STRONG RIDGE OVER THE CENTRAL CONUS. THE RIDGE AND THE BERMUDA HIGH
MERGE TUESDAY AS A TROF MOVES OFF SHORE OF NEW ENGLAND...BUT THE
DEEP MOISTURE AND A LEE TROF REMAIN OVER MUCH OF THE SERN US. THE
CENTER OF THE RIDGE IS PUSHED SOUTH INTO THE GULF WEDNESDAY...BUT
RIDGE AXIS REMAINS OVER OUR AREA...AS ANOTHER TROF DROPS FROM CANADA
INTO THE NRN PLAINS. THIS HELPS PUSH A BACK DOOR COLD FRONT TOWARD
THE AREA DURING THE DAY.

ALTHOUGH A GOOD CHANCE OF CONVECTION AGAIN ON SUNDAY...GUIDANCE
DIFFERS ON BETTER CHANCES FOR ONE AREA OR ANOTHER. THEREFORE...HAVE
GONE WITH CHC POP FOR NOW. OTHERWISE...MAINLY DIURNAL CHC POP MON
THRU WED WITH THE MOISTURE AND WEAK FORCING IN PLACE. ABOVE NORMAL
LOWS AND BELOW NORMAL HIGHS AGAIN SUNDAY...THEN THE HEAT BUILDS WITH
THE RIDGE. HIGHS RISING INTO THE MID 90S BY WED WITH LOW TO MID 70S
EACH MORNING.

&&

.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
AT KCLT...SCATTERED CONVECTION IS EXPECTED THIS AFTERNOON. BASED THE
SLOWER THAN ANTICIPATED DEVELOPMENT...CONFIDENCE IS A LOWER FOR A
RESTRICTION...AND NONE WILL BE CARRIED AT THIS TIME. TS WITH A LOW
VFR CIG WILL BE CARRIED. LIGHT SW WINDS WILL PERSIST. A CONSENSUS OF
GUIDANCE DOES NOT SUPPORT DAYBREAK FOG ON THURSDAY. ALTHOUGH THE
CHANCE OF PRECIPITATION WILL INCREASE ON THURSDAY MORNING AS A FRONT
APPROACHES FORM THE NORTH...CHANCES ARE STILL TOO LOW MENTION A
RESTRICTION.

ELSEWHERE...CONVECTION WILL DEVELOP THIS AFTERNOON...WITH THE BEST
COVERAGE IN THE MOUNTAINS. A TEMPO FOR THUNDERSTORM BASED MVFR
RESTRICTIONS WILL BE CARRIED AT KAVL...WHILE FOOTHILLS SITES GET TS
AND A LOW VFR CIG WITH CB. LIGHT WINDS WILL REMAIN FROM THE SW TO
WSW...EXCEPT AT KAVL WHERE THEY WILL CHANNEL UP THE VALLEY FORM THE
NW. AT THIS TIME GUIDANCE PLACES FOG IN THE MOUNTAIN VALLEYS SW OF
KAVL. BASED ON THE TRENDS FROM THIS MORNING...FOG WILL BE CARRIED AT
KAVL AND KAND AS WELL. CHANCES FOR CONVECTION INCREASE ON THURSDAY
AS A FRONT APPROACHES FROM THE NORTH...BUT CONFIDENCE IS TOO LOW TO
CARRY A RESTRICTION.

OUTLOOK...SCATTERED THUNDERSTORMS WILL CONTINUE LATE
THURSDAY...ESPECIALLY OVER THE NC MOUNTAINS. A WEAK COLD FRONT WILL
REACH THE AREA ON FRIDAY...REMAINING INTO THE WEEKEND...AND
INCREASING THE CHANCE OF THUNDER...LOW CIGS...AND FOG.

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...JAT
SHORT TERM...RWH
LONG TERM...RWH
AVIATION...JAT
Hazardous weather outlook, Jul 18, 5:33 AM EDT, 10 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
533 AM EDT WED JUL 18 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-190945-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-
IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-
ROWAN-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-
MCDOWELL MOUNTAINS-EASTERN MCDOWELL-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-
533 AM EDT WED JUL 18 2012

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

.DAY ONE...TODAY AND TONIGHT.

SCATTERED TO NUMEROUS SLOW MOVING THUNDERSTORMS WILL DEVELOP OVER
THE REGION AGAIN TODAY. A FEW OF THE THUNDERSTORMS WILL PRODUCE
SMALL AREAS OF WIND DAMAGE AND HAIL UP TO THE SIZE OF QUARTERS.
LOCALLY VERY HEAVY RAINFALL IS ALSO POSSIBLE WITH THE STRONGER
STORMS AND FLOODING OF POOR DRAINAGE AREAS MAY DEVELOP. MANY OF
THE STORMS WILL PRODUCE FREQUENT CLOUD TO GROUND LIGHTING THIS
AFTERNOON.

THE EFFECTS OF HEAVY RAIN AND SATURATED SOILS WILL ENHANCE THE
THREAT OF TREES FALLING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

14

In the hours before

Special weather statement, Jul 18, 3:12 PM EDT, 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
312 PM EDT WED JUL 18 2012

SCZ007-182000-
SPARTANBURG-
312 PM EDT WED JUL 18 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN SPARTANBURG COUNTY
THROUGH 400 PM EDT...

AT 312 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES NORTHWEST OF ROEBUCK...OR 5 MILES
SOUTHWEST OF SPARTANBURG...MOVING SOUTHEAST AT 15 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  ROEBUCK...
  PACOLET...

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

LAT...LON 3484 8216 3501 8202 3489 8173 3483 8179
      3468 8182 3463 8184

HG
Special weather statement, Jul 18, 3:15 PM EDT, 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
315 PM EDT WED JUL 18 2012

NCZ505>508-181945-
EASTERN MCDOWELL-GREATER RUTHERFORD-MCDOWELL MOUNTAINS-RUTHERFORD
MOUNTAINS-
315 PM EDT WED JUL 18 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN RUTHERFORD AND
SOUTHERN MCDOWELL COUNTIES THROUGH 345 PM EDT...

AT 316 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES NORTHWEST OF SUGAR HILL...OR 7 MILES
SOUTHWEST OF MARION...MOVING SOUTHEAST AT 20 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  GLENWOOD...
  THERMAL CITY...

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

LAT...LON 3542 8183 3541 8218 3552 8221 3553 8217
      3555 8222 3564 8224 3571 8204

HG
Special weather statement, Jul 18, 3:24 PM EDT, 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
324 PM EDT WED JUL 18 2012

NCZ065-SCZ003-182000-
GREENVILLE MOUNTAINS-HENDERSON-
324 PM EDT WED JUL 18 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN GREENVILLE AND SOUTHERN
HENDERSON COUNTIES THROUGH 400 PM EDT...

AT 324 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR TUXEDO...OR 8 MILES SOUTH OF
HENDERSONVILLE...MOVING SOUTHEAST AT 5 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  NORTH SALUDA RESERVOIR...

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

LAT...LON 3526 8235 3524 8236 3523 8235 3519 8235
      3519 8232 3520 8227 3519 8224 3508 8251
      3519 8260 3522 8260 3534 8247

HG
Special weather statement, Jul 18, 3:30 PM EDT, 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
330 PM EDT WED JUL 18 2012

NCZ035-036-182015-
ALEXANDER-IREDELL-
330 PM EDT WED JUL 18 2012

...A STRONG THUNDERSTORM WILL AFFECT ALEXANDER AND WESTERN IREDELL
COUNTIES THROUGH 415 PM EDT...

AT 330 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES NORTHWEST OF TAYLORSVILLE...MOVING
SOUTHEAST AT 15 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  TAYLORSVILLE...
  STONY POINT...

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

LAT...LON 3592 8083 3571 8100 3579 8113 3583 8115
      3582 8118 3593 8134 3596 8134 3603 8128
      3604 8121 3604 8112

HG
Special weather statement, Jul 18, 3:36 PM EDT, 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
336 PM EDT WED JUL 18 2012

NCZ064-SCZ002-003-182000-
GREENVILLE MOUNTAINS-PICKENS MOUNTAINS-TRANSYLVANIA-
336 PM EDT WED JUL 18 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN PICKENS...NORTHWESTERN
GREENVILLE AND SOUTHERN TRANSYLVANIA COUNTIES THROUGH 400 PM EDT...

AT 336 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES NORTHWEST OF TABLE ROCK RESERVOIR...OR 11
MILES SOUTH OF BREVARD...MOVING SOUTHEAST AT 5 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  TABLE ROCK RESERVOIR...

A SECOND STRONG THUNDERSTORM WAS MOVING FROM CEDAR MOUNTAIN TOWARD
CAESARS HEAD.

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

LAT...LON 3509 8289 3521 8272 3514 8258 3507 8249
      3490 8272

HG
Local storm report, Jul 18, 3:43 PM EDT, 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
343 PM EDT WED JUL 18 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0320 PM     HAIL             4 WSW SPARTANBURG       34.92N 81.99W
07/18/2012  E1.00 INCH       SPARTANBURG        SC   TRAINED SPOTTER

            QUARTER TO NICKEL SIZE HAIL AT MILE MARKER 22 ON I-26

0330 PM     TSTM WND DMG     2 WSW SPARTANBURG       34.94N 81.96W
07/18/2012                   SPARTANBURG        SC   AMATEUR RADIO

            TREE FELL ON VEHICLE AT BRIARWOOD RD TRAPPING 2 PERSONS
            INSIDE. INJURIES UNKNOWN AT THIS TIME.

&&

RWH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 8:32 PM EDTSpecial Weather StatementGSPAnderson28 min
Jul 18, 3:12 PM EDTSpecial Weather StatementGSPSpartanburg48 min
Jul 18, 3:20 PM EDTSevere Thunderstorm WarningGSPSpartanburg55 min
Jul 18, 3:36 PM EDTSpecial Weather StatementGSPPickens24 min
Jul 18, 4:08 PM EDTSevere Thunderstorm WarningGSPOconee53 min
Jul 18, 4:11 PM EDTSpecial Weather StatementGSPChester49 min
Jul 18, 4:25 PM EDTSpecial Weather StatementGSPGreenwood35 min
Jul 18, 4:28 PM EDTSpecial Weather StatementGSPCherokee47 min
Jul 18, 4:48 PM EDTSpecial Weather StatementGSPGreenville42 min
Jul 18, 4:52 PM EDTSpecial Weather StatementGSPUnion38 min
Jul 18, 4:57 PM EDTSpecial Weather StatementGSPLaurens48 min
Jul 18, 5:05 PM EDTSpecial Weather StatementGSPAbbeville25 min
Jul 18, 5:08 PM EDTSevere Thunderstorm WarningGSPUnion48 min
Jul 18, 5:16 PM EDTSevere Thunderstorm WarningGSPYork39 min
Jul 18, 5:23 PM EDTSpecial Weather StatementGSPAnderson37 min
Jul 18, 5:32 PM EDTSevere Thunderstorm WarningGSPAbbeville, Anderson, Greenville58 min
Jul 18, 5:50 PM EDTSpecial Weather StatementGSPLaurens, Union25 min
Jul 18, 6:10 PM EDTSpecial Weather StatementGSPAnderson50 min
Jul 18, 12:42 PM EDTAreal Flood AdvisoryGSPHaywood, Swain78 min
Jul 18, 1:09 PM EDTSpecial Weather StatementGSPAvery, Buncombe, Graham, Haywood, Jackson, Macon and 4 more36 min
Jul 18, 1:24 PM EDTSevere Thunderstorm WarningGSPYancey34 min
Jul 18, 1:51 PM EDTSpecial Weather StatementGSPAvery24 min
Jul 18, 2:07 PM EDTSpecial Weather StatementGSPHenderson38 min
Jul 18, 2:16 PM EDTAreal Flood AdvisoryGSPBurke, Caldwell104 min
Jul 18, 2:23 PM EDTSevere Thunderstorm WarningGSPHaywood, Henderson, Transylvania37 min
Jul 18, 2:45 PM EDTSpecial Weather StatementGSPMcDowell45 min
Jul 18, 2:46 PM EDTSpecial Weather StatementGSPMcDowell44 min
Jul 18, 3:04 PM EDTSpecial Weather StatementGSPTransylvania26 min
Jul 18, 3:15 PM EDTSpecial Weather StatementGSPMcDowell30 min
Jul 18, 3:24 PM EDTSpecial Weather StatementGSPHenderson36 min
Jul 18, 3:27 PM EDTSevere Thunderstorm WarningGSPMcDowell, Rutherford46 min
Jul 18, 3:30 PM EDTSpecial Weather StatementGSPAlexander45 min
Jul 18, 3:39 PM EDTSevere Thunderstorm WarningGSPAlexander, Burke, Caldwell, Catawba36 min
Jul 18, 4:04 PM EDTSpecial Weather StatementGSPMadison41 min
Jul 18, 4:49 PM EDTSpecial Weather StatementGSPUnion41 min
Jul 18, 5:14 PM EDTSevere Thunderstorm WarningGSPGaston, Lincoln, Mecklenburg12 min
Jul 18, 5:20 PM EDTSpecial Weather StatementGSPCabarrus, Rowan25 min
Jul 18, 5:37 PM EDTSevere Thunderstorm WarningGSPCabarrus, Mecklenburg, Rowan53 min
Jul 18, 5:40 PM EDTSevere Thunderstorm WarningGSPGaston, Mecklenburg44 min
Jul 18, 5:53 PM EDTFlash Flood WarningGSPCabarrus, Rowan2 hr
Jul 18, 6:29 PM EDTSevere Thunderstorm WarningGSPCabarrus, Rowan50 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2012Severe Thunderstorm Warnings in North Carolina, 2012Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.