Severe Thunderstorm Warning 522, NWS Greenville-Spartanburg, SC

388 
WWUS52 KGSP 082016
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
416 PM EDT WED AUG 8 2012

NCC045-071-SCC021-091-082045-
/O.CON.KGSP.SV.W.0522.000000T0000Z-120808T2045Z/
CLEVELAND NC-GASTON NC-CHEROKEE SC-YORK SC-
416 PM EDT WED AUG 8 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
YORK...NORTHEASTERN CHEROKEE...SOUTHWESTERN GASTON AND SOUTHEASTERN
CLEVELAND COUNTIES UNTIL 445 PM EDT...

AT 409 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
ANOTHER SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE 
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
LOCATED NEAR KINGS MOUNTAIN...OR 7 MILES EAST OF SHELBY...MOVING 
SOUTH AT 15 MPH.

THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  KINGS MOUNTAIN.

ANOTHER STRONG THUNDERSTORM WAS ALSO LOCATED BETWEEN BLACKSBURG AND 
KINGS MOUNTAIN STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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 3504 8127 3505 8156 3535 8149 3534 8129
TIME...MOT...LOC 2014Z 355DEG 12KT 3525 8141

$$

MOORE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
251 PM EDT WED AUG 8 2012

.SYNOPSIS...
BERMUDA HIGH PRESSURE WILL BUILD IN FROM THE SOUTHEAST TONIGHT AND
REMAINS THROUGH THURSDAY. A COLD FRONT WILL PUSH ACROSS THE AREA
FROM THE WEST LATE FRIDAY. DRY HIGH PRESSURE WILL THEN BUILD BEHIND
THE FRONT OVER THE WEEKEND.

&&

.NEAR TERM /THROUGH THURSDAY/...
AS OF 230 PM...EARLY AFTN CONVECTION DEVELOPING AHEAD OF A WEAK
SHORTWAVE OVER THE NC FOOTHILLS HAS PUT DOWN SOME OUTFLOWS ACROSS
THE NC PIEDMONT. ADDITIONAL CONVECTION IS DEVELOPING ALONG THE ERN
SLOPES OF THE MOUNTAINS AS A SECONDARY SHORTWAVE ARRIVES...AND WHERE
LOW LEVEL CONVERGENCE IS STRONGEST. THIS ACTIVITY SHOULD ALSO SPREAD
EWD GIVEN THE STEERING FLOW. POPS HAVE BEEN RAISED THROUGHOUT FOR
THE LATE AFTN HOURS. 3000 TO 4000 J/KG SFC BASED CAPE VALUES ARE
INDICATED ON LAPS ANALYSIS...AND THE MID LEVEL DRY PUNCH ALONG WITH
DCAPE VALUES AROUND 1000 J/KG SHOULD YIELD A FEW SEVERE TSTMS WITH
ANY 55 DBZ CORES ABOVE 25 KFT. HEAVY RAINFALL ON SATURATED GROUND
COULD ALSO CREATE ISOLD HYDRO ISSUES...BUT STORMS SHOULD MOVE A BIT
MORE TODAY COMPARED TO THE PAST FEW DAYS.

CONVECTION SHOULD DIE OUT FAIRLY QUICKLY WITH THE LOSS OF HEATING
THIS EVENING...WITH JUST DEBRIS CLOUDS EARLY...AND POSSIBLY LOW
CLOUDS AND FOG LATE. GUIDANCE REMAINS MIXED ON HOW DENSE THE FOG MAY
GET...BUT MTN VALLEYS SHOULD SEE THE WORST VSBY.

A MORE PROMINENT SHORTWAVE MOVING AROUND THE DEVELOPING UPPER
MIDWEST LOW PRESSURE ON THU WILL APPROACH THE REGION BUT REMAIN W OF
THE MTNS THROUGH THE LATE DAY. THE MAIN IMPACT OF THIS FEATURE
THROUGH THE NEAR TERM WILL BE BACKING SW FLOW AND SLOWLY DEEPENING
MOISTURE OVER THE REGION. SCATTERED AFTERNOON CONVECTION IS EXPECTED
WITH THE BEST POPS OVER THE MTNS AND SW SECTIONS. MAXES WILL BE
SIMILAR TO WED...PERHAPS A DEGREE HIGHER IN THE ERN PIEDMONT.

&&

.SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/...
AS OF 120 PM WEDNESDAY...AT LEAST SCATTERED CONVECTION IS EXPECTED
TO LINGER WELL INTO THE OVERNIGHT THURSDAY/EARLY FRIDAY. THIS IS A
RESULT ON AN INCREASINGLY MOIST WAA PATTERN IN THE WARM SECTOR OF AN
ANOMALOUSLY STRONG CYCLONE...AS WELL AS A PRECURSOR SHORT WAVE
TROUGH THAT THE MODELS DRIFT ACROSS THE AREA THURSDAY NIGHT.

FOR FRIDAY...THERE IS STILL QUITE A BIT OF UNCERTAINTY REGARDING THE
SEVERE WEATHER THREAT. IT STILL APPEARS AS IF THERE COULD BE FAIRLY
EXTENSIVE CLOUD COVER...AS WELL AS SHOWERS EARLY IN THE DAY. AS
SUCH...THE SHORT RANGE MODELS HAVE BACKED OFF ON THE DEGREE OF
FRIDAY PM INSTABILITY DURING THE PAST 24 HOURS. DESPITE THE
STRENGTHENING UPPER FLOW...THE UNIDIRECTIONAL NATURE OF THE FORECAST
WIND PROFILES IS YIELDING MODEST AT BEST SHEAR. IN ADDITION...THE
BETTER DEEP LAYER FORCING WILL PASS NORTH OF THE AREA...ALTHOUGH
FAIRLY STRONG LOW LEVEL FORCING IS EXPECTED ALONG THE FRONT PROPER
DURING THE EVENING. TAKING ALL OF THIS INTO CONSIDERATION...WILL NOT
GO ABOVE THE LOW-LIKELY POPS THAT WERE INHERITED. THERE WILL STILL
BE A SEVERE WEATHER THREAT...ESPECIALLY IF ANYTHING IS ABLE TO
ORGANIZE ALONG THE FRONT.

FRIDAY NIGHT AND SATURDAY...WITH THE UPPER LOW SPINNING NORTH OF THE
REGION...AND ANOTHER SHORT WAVE TROUGH DROPPING OUT OF THE PLAINS...
THE MID-LEVEL TROUGH AXIS/SURFACE FRONT TAKES ITS TIME PUSHING
THROUGH THE AREA. IN FACT...BOTH MODELS FEATURE QUITE A BIT OF QPF
ACROSS THE SOUTHEAST HALF OF THE FORECAST AREA AFTER 12Z SATURDAY.
THIS WILL NECESSITATE RAMPING POPS UP TO THE CHANCE RANGE IN THESE
AREAS. ALSO...BY SATURDAY AFTERNOON...THE SOUTHERN PORTION OF THE
FRONT IS SO DIFFUSE THAT THE NAM INITIATES HIGH TERRAIN CONVECTION.
THEREFORE...SLIGHT CHANCE POPS WILL EXIST AS FAR NORTH AND WEST AS
THE BLUE RIDGE.

&&

.LONG TERM /SATURDAY NIGHT THROUGH TUESDAY/...
AS OF 200 PM EDT WEDNESDAY...THE LATEST MEDIUM RANGE MODELS CONTINUE
TO INDICATE THAT THE TROUGH AXIS AND COLD FRONT WILL MOVE OFF TO THE
EAST LATE SATURDAY...WITH DECREASING PRECIPITATION FROM WEST TO
EAST. THEN DRY HIGH PRESSURE BUILDS IN FROM THE NW SUNDAY AND
REMAINS THROUGH MONDAY FOR RELATIVELY PLEASANT WEATHER. WILL
FORECAST DRY OVER THE PEDIMENT WITH SLIGHT CHANCE POPS ALONG THE
BLUE RIDGE SUN/MON. ANOTHER WEAK COLD FRONT IS EXPECTED TO PUSH
ACROSS THE AREA TUESDAY FOLLOWED BY HIGH PRESSURE ON WED. WITH LOWER
PW VALUES...PREDOMINANT DOWNSLOPE WEST WINDS AND WEAK
INSTABILITY...WILL MENTION SLIGHT TO LOW END CHANCE POPS FOR
DIURNAL CONVECTION TUE/WED. TEMPERATURES WILL BE A COUPLE DEGREES
BELOW SEASONAL AVERAGES DURING THE PERIOD.

&&

.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
AT KCLT...CONVECTION HAS DEVELOPED ALL AROUND THE AIRFIELD THIS AFTN
ON OUTFLOWS. TEMPO TSRA 19Z TO 23Z STILL LOOKS LIKE THE BEST WINDOW
FOR TSRA AT THE AIRFIELD. ANY GUSTS WOULD BE FROM THE N AND WILL BE
ADDED AS NECESSARY. MAINLY VFR CIGS ARE EXPECTED...BUT WITH TEMPO
MVFR UNDER TSRA. THE ACTIVITY SHOULD DIMINISH QUICKLY THIS EVENING.
A MOIST BOUNDARY LAYER UNDER DRYING MID AND UPPER LEVEL AIR COULD
LEAD TO ANOTHER ROUND OF LOW CLOUDS...HOWEVER...NONE OF THE GUIDANCE
FEATURES ANY RESTRICTIONS TOWARD DAYBREAK AT THIS POINT. WILL HINT
TOWARD IFR CONDITIONS WITH A FEW007 MENTION FOR NOW. WINDS WILL BE
LIGHT.

ELSEWHERE...TSTMS WERE FORMING ALL ALONG THE ERN ESCARPMENT OF THE
MTNS THIS AFTN...AND COVERAGE SHOULD SLOWLY EXPAND EASTWARD. TEMPO
TSRA CHANCES LOOK BEST FROM KGMU TO KGSP THIS AFTN...WITH VCTS
MENTION ELSEWHERE UNLESS SOMETHING GETS CLOSE. EXPECT MAINLY SCT TO
BKN VFR CUMULUS CLOUDS...WITH TEMPO CIGS EXPECTED UNDER TSTMS. FLOW
SHOULD REMAIN LIGHT SW TO WSW EAST OF THE MOUNTAINS AND NW AT KAVL.
THE ACTIVITY WILL DIMINISH QUICKLY THIS EVENING...WITH A DECENT
CHANCE OF LOW CLOUDS/FOG AGAIN OVERNIGHT GIVEN THE MOIST BL AND
DRYING ALOFT. THE BEST CHANCE OF DAYBREAK IFR WILL BE KAVL TO KHKY.

OUTLOOK...SCATTERED AFTERNOON TSTMS WILL DEVELOP AGAIN THU...MAINLY
IN THE MTNS. A COLD FRONT WILL APPROACH FROM THE NW ON FRIDAY TO
INCREASE THUNDERSTORM COVERAGE THROUGH FRI NIGHT. DRIER HIGH PRES
WILL RETURN OVER THE WEEKEND AND LINGER INTO EARLY NEXT 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...JOH
NEAR TERM...HG
SHORT TERM...JDL
LONG TERM...JOH
AVIATION...HG

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
327 PM EDT WED AUG 8 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-091930-
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-
327 PM EDT WED AUG 8 2012

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER THE REGION
THIS AFTERNOON AND EVENING. THE STRONGEST STORMS WILL BE CAPABLE
OF PRODUCING A BRIEF PERIOD OF LOCALLY DAMAGING WIND GUSTS AND
PERHAPS LARGE HAIL. FREQUENT CLOUD TO GROUND LIGHTNING AND LOCALLY
HEAVY RAINFALL CAN OCCUR WITH ANY THUNDERSTORM.

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

A STRONG COLD FRONT WILL APPROACH THE REGION LATE FRIDAY. THERE
IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ASSOCIATED WITH THE
FRONT. DAMAGING WIND GUSTS WILL BE THE PRIMARY THREAT.

.SPOTTER INFORMATION STATEMENT...

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

LANE

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
152 PM EDT WED AUG 8 2012

NCZ064-SCZ002-081830-
PICKENS MOUNTAINS-TRANSYLVANIA-
152 PM EDT WED AUG 8 2012

...STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN PICKENS AND
SOUTHERN TRANSYLVANIA COUNTIES THROUGH 230 PM EDT...

AT 148 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES NORTHEAST OF ROSMAN...OR 4 MILES
SOUTHWEST OF BREVARD...MOVING SOUTHEAST AT 5 MPH.

ANOTHER STRONG THUNDERSTORM WAS LOCATED SOUTHEAST OF LAKE
TOXAWAY...ALSO DRIFTING SLOWLY SOUTHEAST.

PEOPLE IN NORTHWESTERN PICKENS AND SOUTHERN TRANSYLVANIA COUNTIES...
INCLUDING THE FOLLOWING LOCATIONS...

ROSMAN AND BREVARD...

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

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

HEAVY RAINS MAY FLOOD AREAS WITH POOR DRAINAGE...SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE RAPIDLY. SEEK HIGHER
GROUND IF THREATENED BY FLOOD WATERS.

LAT...LON 3528 8285 3523 8261 3522 8260 3515 8259
      3512 8266 3513 8268 3510 8269 3508 8275
      3498 8285 3504 8291 3505 8290 3505 8293
      3512 8300

MOORE

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
213 PM EDT WED AUG 8 2012

SCZ002-003-005-006-081900-
GREATER GREENVILLE-GREATER PICKENS-GREENVILLE MOUNTAINS-PICKENS
MOUNTAINS-
213 PM EDT WED AUG 8 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN GREENVILLE AND NORTHERN
PICKENS COUNTIES THROUGH 300 PM EDT...

AT 212 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR MARIETTA...OR 14 MILES NORTH OF DOWNTOWN
GREENVILLE...MOVING SOUTHEAST AT 10 MPH.

OTHER STORMS MAY DEVELOP INTO NORTHERN PICKENS COUNTY BY 3 PM.

PEOPLE IN NORTHERN GREENVILLE AND NORTHERN PICKENS COUNTIES...
INCLUDING THE FOLLOWING LOCATIONS...

MARIETTA...TRAVELERS REST AND LAKE ROBINSON...

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

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

LAT...LON 3498 8285 3508 8275 3510 8269 3513 8268
      3512 8267 3513 8265 3512 8263 3517 8254
      3516 8253 3517 8250 3507 8223 3485 8245

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
241 PM EDT WED AUG 8 2012

NCZ503>506-081930-
BURKE MOUNTAINS-EASTERN MCDOWELL-GREATER BURKE-MCDOWELL MOUNTAINS-
241 PM EDT WED AUG 8 2012

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL BURKE AND NORTHEASTERN
MCDOWELL COUNTIES THROUGH 330 PM EDT...

AT 236 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR TABLE ROCK...OR 9 MILES NORTHWEST OF
MORGANTON...MOVING SOUTH AT 10 MPH.

PEOPLE IN CENTRAL BURKE AND NORTHEASTERN MCDOWELL COUNTIES...
INCLUDING THE FOLLOWING LOCATION...

MORGANTON...

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

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

LAT...LON 3591 8174 3587 8171 3587 8169 3586 8166
      3567 8153 3562 8194 3578 8199 3590 8196
      3593 8175

MOORE

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
256 PM EDT WED AUG 08 2012

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

0100 PM     TSTM WND DMG     6 W STATESVILLE         35.79N 80.99W
08/08/2012                   IREDELL            NC   911 CALL CENTER

            ONE TREE DOWN NEAR INTERSECTION OF MASSEY DEAL RD AND OLD
            MOUNTAIN RD.

&&

MOORE

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
309 PM EDT WED AUG 8 2012

SCZ002-003-005-006-081945-
GREATER GREENVILLE-GREATER PICKENS-GREENVILLE MOUNTAINS-PICKENS
MOUNTAINS-
309 PM EDT WED AUG 8 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN PICKENS AND WESTERN
GREENVILLE COUNTIES THROUGH 345 PM EDT...

AT 305 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 5 MILES SOUTH OF PUMPKINTOWN...OR 5 MILES
NORTHEAST OF PICKENS...MOVING SOUTHEAST AT 5 MPH.

PEOPLE IN EASTERN PICKENS AND WESTERN GREENVILLE COUNTIES...INCLUDING
THE FOLLOWING LOCATIONS...

PICKENS AND EASLEY...

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.

LAT...LON 3477 8275 3507 8281 3508 8278 3507 8278
      3507 8276 3508 8275 3513 8241 3486 8243

NED

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
324 PM EDT WED AUG 08 2012

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

0220 PM     TSTM WND DMG     2 S MOORESVILLE         35.55N 80.81W
08/08/2012                   IREDELL            NC   FIRE DEPT/RESCUE

            TREES DOWN ON SHEARERS ROAD.

&&

JOH