Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 460, NWS Greenville-Spartanburg, SC

July 24, 2012Greenville County, Laurens County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 24, 2012, 6:02 PM EDT for Greenville County, Laurens County, South Carolina. It was in force for 58 min. 3 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 24, 2012, 6:02 PM EDT (22:02 UTC)
Expired
Jul 24, 2012, 7:00 PM EDT
In force
58 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Greenville County, SC, Laurens County, SC

The radar

The Greer radar (KGSP), 42 km from the middle of the area, began a volume at 22:04 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 24, 6:07 PM EDTTSTM WND DMGGray Court, SCONE VERY LARGE BRANCH DOWN AT A RESIDENCE AND SEVERAL OTHER LIMBS OF VARIOUS SIZES DOWN IN THE IMMEDIATE AREA. POWER WAS OUT.
Jul 24, 6:15 PM EDTTSTM WND DMG4 Ssw Gray Court, SCTREE DOWN AT THE INTERSECTION OF GEORGIA ROAD AND BAYNES CREEK ROAD.
Jul 24, 6:25 PM EDTTSTM WND DMGHickory Tavern, SCTREES DOWN AROUND HICKORY TAVERN.

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 5 storm reports to this severe thunderstorm warning; the first came 5 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.0 hours before the alert went out and 257 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, Peachtre/Fal Fld, GA at 12:00Z on 2012-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1384 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, Peachtre/Fal Fld, GA at 12:00Z on 2012-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -51 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
1384 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
1118 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-51 m²/s²
0-3 km storm-relative helicity
-38 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.

497 
WUUS52 KGSP 242202
SVRGSP
SCC045-059-242300-
/O.NEW.KGSP.SV.W.0460.120724T2202Z-120724T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
602 PM EDT TUE JUL 24 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

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

* UNTIL 700 PM EDT

* AT 600 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
  FOUNTAIN INN...OR 14 MILES NORTHWEST OF LAURENS...AND MOVING SOUTH
  AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  GRAY COURT.
  HICKORY TAVERN.
  BOYD MILL POND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS CAPABLE OF BLOWING 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 3432 8214 3433 8217 3436 8218 3438 8222
      3461 8244 3474 8233 3480 8218 3470 8207
      3464 8194 3460 8191 3458 8187 3460 8185
      3456 8177 3430 8212
TIME...MOT...LOC 2202Z 345DEG 17KT 3464 8220

$$

NED
2 follow-up statements
628 
WWUS52 KGSP 242226
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
626 PM EDT TUE JUL 24 2012

SCC045-059-242300-
/O.CON.KGSP.SV.W.0460.000000T0000Z-120724T2300Z/
LAURENS SC-GREENVILLE SC-
626 PM EDT TUE JUL 24 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
GREENVILLE AND LAURENS COUNTIES UNTIL 700 PM EDT...

AT 625 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 BOYD
MILL POND...OR 10 MILES WEST OF LAURENS...MOVING SOUTH AT 20 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS CAPABLE OF BLOWING 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 3432 8214 3433 8217 3436 8218 3438 8222
      3461 8244 3474 8233 3480 8218 3470 8207
      3464 8194 3460 8191 3458 8187 3460 8185
      3456 8177 3430 8212
TIME...MOT...LOC 2226Z 345DEG 17KT 3447 8220

$$

NED
877 
WWUS52 KGSP 242244
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
644 PM EDT TUE JUL 24 2012

SCC045-059-242300-
/O.CON.KGSP.SV.W.0460.000000T0000Z-120724T2300Z/
LAURENS SC-GREENVILLE SC-
644 PM EDT TUE JUL 24 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
GREENVILLE AND LAURENS COUNTIES UNTIL 700 PM EDT...

AT 641 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
HICKORY TAVERN...OR 8 MILES WEST OF LAURENS...MOVING SOUTH AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
  LAURENS...BOYD MILL POND AND WATERLOO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS CAPABLE OF BLOWING DOWN SCATTERED TREES AND POWER
LINES. SEEK SHELTER INSIDE AN INTERIOR ROOM.

THIS SEVERE THUNDERSTORM IS ALSO PRODUCING FREQUENT AND INTENSE
LIGHTNING. TURN OFF ELECTRICAL APPLIANCES. DO NOT USE CORDED
TELEPHONES. DO NOT TAKE A BATH OR SHOWER.

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 3432 8214 3433 8217 3436 8218 3438 8222
      3459 8242 3472 8232 3474 8218 3464 8194
      3460 8191 3458 8187 3460 8185 3456 8177
      3430 8212
TIME...MOT...LOC 2244Z 345DEG 17KT 3448 8216

$$

NED

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 24, 4:38 PM EDT, 1 hour 24 minutes earlier.

Area forecast discussion, Jul 24, 4:38 PM EDT, 1 hour 24 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
438 PM EDT TUE JUL 24 2012

.SYNOPSIS...
A WEAK UPPER LEVEL RIDGE WILL BUILD ACROSS THE REGION TONIGHT AND
PERSIST THROUGH THURSDAY. A COLD FRONT IS THEN EXPECTED TO MOVE
ACROSS THE CAROLINAS AND NORTHEAST GEORGIA ON LATE FRIDAY INTO
SATURDAY. ANOTHER RIDGE OF HIGH PRESSURE BUILDS BACK IN SUN AND
REMAINS THROUGH EARLY NEXT WEEK.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
AS OF 420 PM...THE MCS MOVING SOUTH INTO NORTHEAST TENN/NORTHWEST NC
CONTINUES TO LOSE SOME STEAM AS IT ENCOUNTERS HIGHER STABILITY OVER
THESE AREAS...THE RESULT OF AN OUTFLOW BOUNDARY THAT MOVED THROUGH
THE AREA EARLIER TODAY. MEANWHILE...DENSE CIRRUS CANOPY AHEAD OF THE
MCS TO OUR NORTH IS PREVENTING MUCH IN THE WAY OF AIR MASS RECOVERY.
AS SUCH...I FEEL THAT THE SEVERE WEATHER THREAT IS DIMINISHING
ACROSS THE NC FOOTHILLS AND PIEDMONT ATTM. HOWEVER...THE AIR MASS
OVER THE CENTRAL/SOUTHERN MTNS IS STILL VERY UNSTABLE. THEREFORE...
I WOULD NOT BE SURPRISED IF THE OUTFLOW REINVIGORATES OVER THIS AREA
EARLY THIS EVENING. ANOTHER POSSIBLE AREA FOR SEVERE CONVECTION WILL
BE ACROSS THE UPSTATE AND NORTHEAST GEORGIA...WHERE THE AIR MASS IS
ALSO QUITE UNSTABLE. HOWEVER...WITH THE WEAK SHEAR IN PLACE ACROSS
THIS AREA...ANY SEVERE WEATHER IS EXPECTED TO BE MORE PULSE IN
NATURE.

LATER TONIGHT A WEAK SFC BNDRY WILL MOVE IN FROM THE NORTHEAST. OR
IT MAY SIMPLY BE A MODEL REFLECTION OF EXTENSIVE OUTFLOW BNDRYS.
EITHER WAY...THE NAM KEEPS QUITE A BIT OF CAPE OVER THE REGION
TONIGHT...AND SHRA/TSTMS MAY PERSIST IN SPOTS MUCH OF THE NIGHT. THE
BEST CHANCES WILL PROBABLY BE ALONG THE TN LINE WHERE NW FLOW WILL
GIVE AN OROGRAPHIC BOOST TO CONVECTION. IN THESE AREAS I/VE
MAINTAINED CHANCE POPS THROUGH THE NIGHT...THOUGH ELSEWHERE I TAKE
THEM INTO THE SLIGHT CHANCE RANGE AFTER THE INITIAL ROUNDS OF
CONVECTION.

THE NAM POOLS HIGH DEWPOINTS AND QUITE A BIT OF CAPE OVER THE FA ON
WEDNESDAY. SPC HAS PLACED THE REGION UNDER A 5 PERCENT SEVERE RISK.
THE DEEP LAYER RIDGE WILL TRY TO NOSE BACK INTO THE FA...BUT THE
AMOUNT OF INSTABILITY AND WEAK SFC CONVERGENCE SHOULD SUPPORT GOOD
CONVECTIVE COVERAGE OVER THE WESTERN CAROLINAS AND NE GA DURING THE
AFTN HOURS. SOME OF THESE WILL PROBABLY REACH PULSE SEVERE LIMITS
WITH SMALL AREAS OF WIND DAMAGE AND LARGE HAIL. MAX TEMPS WILL RUN A
COUPLE CATEGORIES ABOVE NORMAL.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
AS OF 220 PM EDT TUESDAY...SHORT RANGE MODELS INDICATE THAT THE MID
LEVEL RIDGE WILL BUILD OVER THE REGION ON THURSDAY. H85 TEMPS WITHIN
THE LEE OF THE MOUNTAINS INCREASE TO AROUND 24C DURING THE
AFTERNOON. A WEAK SUBSIDENCE IS EXPECTED TO DEVELOP BETWEEN H7 TO
H8...YIELDING AN SHALLOW LAYER OF CIN BETWEEN 10 TO 30 J/KG. IT
APPEARS THAT WEAK LEE TROF MAY DEEPEN SLIGHTLY WITH WEST H85
FLOW...BUT SFC MOISTURE CONVERGENCE SHOULD REMAIN WEAK. COVERAGE OF
DIURNAL CONVECTION SHOULD BE LIMITED BY AFTERNOON MIXING OF SFC
DEWPOINTS AND PERSISTENT WEAK CAPPING. I WILL FORECAST MID AFTERNOON
INITIATION ACROSS THE RIDGES...WITH CHC POPS INTO THE EARLY EVENING.
COVERAGE EAST OF THE MTNS SHOULD REMAIN LIMITED TO A SCHC. THE MAIN
CONCERN ON THURSDAY WILL BE THE HOT AFTERNOON TEMPERATURES. USING A
BLEND OF MOS...HIGH TEMPERATURES ARE FORECAST TO RANGE FROM AROUND
90 WITHIN THE MTN VALLEYS TO U90S EAST...3 TO 5 DEGREES LOWER THAN
RECORDS. HOWEVER...EVEN WITH MIXING DEWPOINTS...HEAT INDEX VALUES
NEAR THE CLT METRO MAY MEET HEAT ADVISORY CRITERIA.

ON FRIDAY...A WEAK COLD FRONT IS EXPECTED TO MOVE ACROSS THE
SOUTHERN APPALACHIANS DURING THE AFTERNOON. THE ENVIRONMENT AHEAD OF
THE FRONT IS EXPECTED TO DEVELOP CAPE VALUES BETWEEN 1500 TO 2000
J/KG WITH LITTLE TO NO CIN. IN ADDITION...UPPER DIVERGENCE MAY
DEVELOP OVER THE REGION AS THE CORE OF A H3 JET PUSHES ACROSS PA.
GIVEN THE APPROACH OF THE SFC FRONT...WIDESPREAD INSTABILITY...AND
UPPER SUPPORT...I WILL FORECAST LIKELY POPS ACROSS THE MTNS AND 30
TO 40 POPS EAST. SEVERE MULTICELL THUNDERSTORMS MAY DEVELOP ALONG
AND AHEAD OF THE FRONT.

HEAT WILL REMAIN A CONCERN ACROSS THE PIEDMONT AS DEWPOINTS RECOVER
TO THE U60S AND HIGHS ONCE AGAIN REACH INTO THE U90S. HEAT INDEX
VALUES ALONG AND EAST OF I-85 MAY REACH HEAT ADVISORY CRITERIA.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
AS OF 2 PM EDT TUESDAY...THE LATEST MEDIUM RANGE MODELS CONTINUE TO
INDICATE THAT A COLD FRONT WILL MOVE ACROSS THE AREA ON LATE FRI/SAT
AS AN UPPER TROF DEEPENS OVER THE EAST COAST. THE FRONT IS EXPECTED
TO STALL OVER SOUTH OF THE AREA SUN AND DISSIPATES MON AS A RIDGE
BUILDS IN FROM THE SE. THE STRONGEST UPPER FORCING WILL REMAIN NORTH
OF THE AREA...HOWEVER GOOD OVERALL DYNAMICAL LIFT AND H3 DIV ALONG
WITH PLENTY OF LLVL INSTABILITY WILL BE AVAILABLE FOR SCATTERED
DIURNAL TSTMS EACH DAY THROUGH THE PERIOD. POPS WERE MAINTAINED AT
NEAR CLIMO...HOWEVER IF THIS PATTERN AND S/W TIMING PERSISTS OVER
THE NEXT COUPLE MODEL RUNS...AN INCREASE IN POPS WILL BE WARRANTED
FOR FRI/SAT. SUN LOOKS TO BE THE DRIEST DAY WITH FAIRLY STRONG HIGH
PRESSURE BUILDING IN...YET THE FRONT WILL REMAIN JUST TO THE
SOUTH...SO SLIGHT CHANCE POPS WERE MENTIONED THROUGH THE DAY. MON
WILL BE ACTIVE AGAIN AS ANOTHER SHOT OF UPPER ENERGY ROUNDS THE WRN
RIDGE AND TRAVERSES THE REGION. TEMPERATURES WILL BE NEAR...OR A
COUPLE DEGREES ABOVE NORMAL FRI/SAT. WITH NW/LY FLOW SETTING UP
SUN...EXPECT A COUPLE DEGREES COOLER IN THE MTNS SUN/MON. YET...A
GOOD DOWNSLOPE WARMING COMPONENT WILL ENABLE MAXES RIGHT AROUND
NORMAL OVER THE LOWER PIEDMONT.

&&

.AVIATION /21Z TUESDAY THROUGH SUNDAY/...
AT KCLT...HAVE HELD ON TO TEMPO GROUP FOR CONVECTION FROM 20-22 UTC
THIS AFTN. TSTMS ARE MOVING INTO THE NC MTNS ATTM. HOWEVER...THEY
HAVE LOST SOME OF THEIR ORGANIZATION. I STILL THINK THEY WILL
ORGANIZE AS THEY EMERGE INTO THE FOOTHILLS AND CONFIDENCE IS STILL
GOOD IN A SQUALL LINE LATER IN THE AFTN. WINDS WILL PROBABLY AVERAGE
FROM THE WNW THE REST OF THE AFTN...THOUGH THEY MAY BACK TO THE WSW
AT TIMES. THEY WILL TURN MORE OUT OF THE NORTH BEHIND A WEAK COLD
FRONT LATE TONIGHT. WHILE NOTHING HAS BEEN CARRIED IN THE
TAF...THERE ARE INDICATIONS THAT SHRA/TSTM ACTIVITY COULD BE IN THE
VCNTY MUCH OF THE NIGHT.

ELSEWHERE...SCT TSTMS WILL CONTINUE TO DEVELOP ACROSS THE REGION
THIS AFTN. A STRONG SQUALL LINE IS EXPECTED TO DROP ACROSS THE
REGION THIS EVENING. FOR NOW I/M JUST GOING TO CARRY VCTS FOR
SEVERAL HOURS...BUT AS THE LINE GETS CLOSER WE SHOULD BE ABLE TO ADD
A PERIOD OF TEMPO OR PREVAILING THUNDER. A WEAK COLD FRONT WILL
STALL OVER THE REGION LATE TONIGHT...AND THIS MAY ALLOW SCT
SHRA/TSTMS TO LAST INTO THE MORNING HOURS...THOUGH FOR NOW THAT
HASN/T BEEN CARRIED IN THE TAF. WINDS WILL BE WSW TO W OVER THE
UPSTATE AND NW OVER WRN NC. WINDS LATER TONIGHT WILL BECOME LIGHT OR
SHIFT TO LIGHT OUT OF THE NORTH BEHIND THE FRONT AND THUNDERSTORM
COMPLEXES.

OUTLOOK...EXPECT SOLID CHC CONVECTION WED AFTERNOON AND EVENING.
BEST CHC OF OVERNIGHT RESTRICTIONS WILL BE IN AREAS THAT SEE LOCALLY
HEAVY RAIN. A COLD FRONT MAY BRING MORE WIDESPREAD CONVECTION FRI
AND FRI NIGHT.

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...JPT
NEAR TERM...JDL/MCAVOY
SHORT TERM...NED
LONG TERM...JOH
AVIATION...MCAVOY
Hazardous weather outlook, Jul 24, 5:24 PM EDT, 38 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
524 PM EDT TUE JUL 24 2012

GAZ010-017-018-026-028-029-SCZ001>007-010>013-019-252130-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-ANDERSON-ABBEVILLE-
LAURENS-UNION SC-GREENWOOD-
524 PM EDT TUE JUL 24 2012

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

.DAY ONE...TONIGHT.

ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP
OVER UPSTATE SOUTH CAROLINA AND NORTHEAST GEORGIA THIS EVENING.
THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING DAMAGING WIND
GUSTS AND A BRIEF PERIOD OF LARGE HAIL. A MORE ORGANIZED THREAT
FOR DAMAGING WIND GUSTS MAY EXIST ACROSS NORTHEAST GEORGIA
AND THE WESTERN HALF OF UPSTATE SOUTH CAROLINA AFTER 7 PM...IF A
LINE OF THUNDERSTORMS MOVING OVER THE NORTH CAROLINA MOUNTAINS
LATE THIS AFTERNOON IS ABLE TO HOLD TOGETHER.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

A WEAK STATIONARY FRONT WILL HELP TO TRIGGER ADDITIONAL
THUNDERSTORMS OVER WESTERN NORTH CAROLINA AND NORTHEAST GEORGIA ON
WEDNESDAY. THERE WILL NOT BE NEARLY AS MUCH WIND SHEAR AS ON
TUESDAY...BUT SOME OF THE STORMS WILL STILL BE CAPABLE OF
PRODUCING LARGE HAIL AND DAMAGING WINDS.

HOT AND HUMID CONDITIONS ARE EXPECTED ALONG AND EAST OF THE
INTERSTATE 85 CORRIDOR ON THURSDAY AND FRIDAY. HEAT INDEX VALUES
MAY EXCEED 103 DEGREES DURING THE MID TO LATE AFTERNOON.

.SPOTTER INFORMATION STATEMENT...

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

NCZ033-035>037-048>053-056>059-062>065-068>072-082-501>510-SCZ008-
009-014-252130-
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-
CHEROKEE-YORK-CHESTER-
524 PM EDT TUE JUL 24 2012

...SEVERE THUNDERSTORM WATCH 512 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

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

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE ACROSS THE
NORTH CAROLINA MOUNTAINS EARLY THIS EVENING. DAMAGING WIND GUSTS
WILL BE POSSIBLE ALONG THE LEADING EDGE OF THIS ACTIVITY...AS THIS
ACTIVITY MOVES SOUTH ACROSS THE AREA. THIS COMPLEX OF
THUNDERSTORMS MAY INTENSIFY AS IT ENCOUNTERS MORE UNSTABLE AIR
ALONG AND SOUTH OF THE FRENCH BROAD VALLEY...LEADING TO AN
INCREASE IN THE THREAT FOR DAMAGING WINDS IN THESE AREAS. A BRIEF
PERIOD OF LARGE HAIL AND FREQUENT CLOUD TO LIGHTNING WILL ALSO BE
POSSIBLE.

OUTSIDE THE MOUNTAINS...ISOLATED TO WIDELY SCATTERED THUNDERSTORMS
WILL PRODUCE A THREAT FOR BRIEF DAMAGING WIND GUSTS AND LARGE
HAIL...AS WELL AS FREQUENT CLOUD TO GROUND LIGHTNING AND LOCALLY
HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

A WEAK STATIONARY FRONT WILL HELP TO TRIGGER ADDITIONAL
THUNDERSTORMS OVER WESTERN NORTH CAROLINA AND NORTHEAST GEORGIA ON
WEDNESDAY. THERE WILL NOT BE NEARLY AS MUCH WIND SHEAR AS ON
TUESDAY...BUT SOME OF THE STORMS WILL STILL BE CAPABLE OF
PRODUCING LARGE HAIL AND DAMAGING WINDS.

HOT AND HUMID CONDITIONS ARE EXPECTED ALONG AND EAST OF THE
INTERSTATE 85 CORRIDOR ON THURSDAY AND FRIDAY. HEAT INDEX VALUES
MAY EXCEED 103 DEGREES DURING THE MID TO LATE AFTERNOON.

.SPOTTER INFORMATION STATEMENT...

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

LANE

In the hours before

Special weather statement, Jul 24, 2:35 PM EDT, 3 hours 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
235 PM EDT TUE JUL 24 2012

NCZ033-050-241915-
AVERY-MITCHELL-
235 PM EDT TUE JUL 24 2012

...A STRONG THUNDERSTORM WILL AFFECT AVERY AND EASTERN MITCHELL
COUNTIES THROUGH 315 PM EDT...

AT 234 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES SOUTH OF HAMPTON...OR 8 MILES SOUTH OF
ELIZABETHTON...MOVING SOUTHEAST AT 10 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  BULADEAN...

SMALL HAIL...AND WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THIS
STORM.

LAT...LON 3615 8181 3611 8180 3609 8176 3599 8188
      3599 8191 3586 8205 3613 8228 3617 8220
      3615 8218 3615 8215 3611 8212 3611 8208
      3613 8203 3623 8196

07
Special weather statement, Jul 24, 4:34 PM EDT, 1 hour 28 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
434 PM EDT TUE JUL 24 2012

NCZ049-050-242115-
MITCHELL-YANCEY-
434 PM EDT TUE JUL 24 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN YANCEY AND WESTERN
MITCHELL COUNTIES THROUGH 515 PM EDT...

AT 430 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTHEAST OF LIMESTONE COVE...OR 10 MILES
EAST OF ERWIN...MOVING SOUTH AT 10 MPH.

SMALL HAIL...AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...TRY TO
GET INDOORS OR INTO A HARD TOPPED VEHICLE. OTHERWISE...STAY AWAY FROM
OPEN AREAS AND ISOLATED HIGH OBJECTS SUCH AS TREES. WHEN INDOORS...
STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING WIRED ELECTRONIC
DEVICES. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE STORM
APPROACHES.

LAT...LON 3615 8218 3615 8215 3615 8214 3611 8212
      3588 8214 3592 8244 3612 8237 3614 8230
      3614 8225 3617 8222

KRENTZ
Special weather statement, Jul 24, 4:52 PM EDT, 1 hour 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
452 PM EDT TUE JUL 24 2012

SCZ014-242115-
CHESTER-
452 PM EDT TUE JUL 24 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN CHESTER COUNTY
THROUGH 515 PM EDT...

AT 450 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR FORT LAWN...OR 8 MILES SOUTHWEST OF
LANCASTER...MOVING SOUTHEAST AT 10 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  FISHING CREEK RESERVOIR...
  GREAT FALLS RESERVOIR...

PEOPLE IN SOUTHEASTERN CHESTER COUNTY...INCLUDING THE FOLLOWING
LOCATIONS...

FORT LAWN...FISHING CREEK RESERVOIR...GREAT FALLS RESERVOIR...GREAT
FALLS AND CEDAR CREEK RESERVOIR...

SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.

PEA SIZE HAIL AND WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THIS
STORM.

LAT...LON 3467 8088 3465 8089 3455 8087 3454 8088
      3454 8092 3469 8099 3474 8087 3474 8086
      3470 8085

NED
Special weather statement, Jul 24, 5:09 PM EDT, 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
509 PM EDT TUE JUL 24 2012

NCZ052-059-063-064-242200-
HAYWOOD-NORTHERN JACKSON-SOUTHERN JACKSON-TRANSYLVANIA-
509 PM EDT TUE JUL 24 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN JACKSON...SOUTHERN
HAYWOOD AND WESTERN TRANSYLVANIA COUNTIES THROUGH 600 PM EDT...

AT 506 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 6 MILES NORTH OF WOLF MOUNTAIN...OR 13 MILES
SOUTH OF WAYNESVILLE...MOVING SOUTHEAST AT 25 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  LAKE TOXAWAY...
  ROSMAN...

SMALL HAIL...AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.

LAT...LON 3535 8315 3543 8295 3515 8279 3507 8295

KRENTZ
Special weather statement, Jul 24, 5:37 PM EDT, 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
537 PM EDT TUE JUL 24 2012

NCZ508-510-242215-
EASTERN POLK-GREATER RUTHERFORD-
537 PM EDT TUE JUL 24 2012

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL RUTHERFORD AND EASTERN
POLK COUNTIES THROUGH 615 PM EDT...

AT 536 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTHWEST OF RUTHERFORDTON...MOVING SOUTH
AT 5 MPH.

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

LAT...LON 3540 8190 3519 8188 3519 8217 3542 8206

KRENTZ
Special weather statement, Jul 24, 5:53 PM EDT, 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
553 PM EDT TUE JUL 24 2012

SCZ007-242230-
SPARTANBURG-
553 PM EDT TUE JUL 24 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN SPARTANBURG COUNTY
THROUGH 630 PM EDT...

AT 548 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTHWEST OF MAYO...OR 8 MILES NORTH OF
SPARTANBURG...MOVING SOUTHEAST AT 20 MPH.

PEOPLE IN NORTHEASTERN SPARTANBURG COUNTY...INCLUDING THE FOLLOWING
LOCATIONS...

MAYO...COWPENS AND PACOLET...

SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.

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

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...TRY TO
GET INDOORS OR INTO A HARD TOPPED VEHICLE. OTHERWISE...STAY AWAY FROM
OPEN AREAS AND ISOLATED HIGH OBJECTS SUCH AS TREES. WHEN INDOORS...
STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING WIRED ELECTRONIC
DEVICES. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE STORM
APPROACHES.

LAT...LON 3480 8180 3518 8206 3519 8205 3519 8187
      3491 8175

NED

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 12:46 AM EDTSpecial Weather StatementGSPChester44 min
Jul 24, 12:48 AM EDTSevere Thunderstorm WarningGSPYork40 min
Jul 24, 4:52 PM EDTSpecial Weather StatementGSPLancaster23 min
Jul 24, 5:53 PM EDTSpecial Weather StatementGSPSpartanburg37 min
Jul 24, 6:33 PM EDTSpecial Weather StatementGSPCherokee42 min
Jul 24, 6:51 PM EDTSevere Thunderstorm WarningGSPAnderson54 min
Jul 24, 6:56 PM EDTSevere Thunderstorm WarningGSPAbbeville, Greenwood, Laurens53 min
Jul 24, 7:10 PM EDTSpecial Weather StatementGSPUnion50 min

Nearby

Severe Thunderstorm Warnings in South 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.