Severe Thunderstorm Warning 689, NWS Greenville-Spartanburg, SC

639 
WWUS52 KGSP 270010
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
810 PM EDT MON SEP 26 2011

NCC071-SCC091-270100-
/O.CON.KGSP.SV.W.0689.000000T0000Z-110927T0100Z/
GASTON NC-YORK SC-
810 PM EDT MON SEP 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR WESTERN YORK AND GASTON COUNTIES...

AT 809 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 3 MILES NORTHWEST OF YORK...MOVING NORTHEAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  KINGS MOUNTAIN STATE PARK...
  CLOVER...
  CROWDERS...
  GASTONIA...LOWELL...RANLO AND CRAMERTON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT FOR LARGE HAIL AND
DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR
WITH ANY THUNDERSTORM. SEEK SHELTER INDOORS AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM PASSES.

&&

LAT...LON 3530 8101 3521 8101 3515 8103 3486 8121
      3494 8147 3505 8143 3505 8141 3515 8139
      3517 8133 3526 8132 3527 8134 3541 8129
      3540 8096 3537 8098 3537 8094
TIME...MOT...LOC 0011Z 203DEG 15KT 3502 8127

$$

RWH

210 
WWUS52 KGSP 270028
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
828 PM EDT MON SEP 26 2011

SCC091-270038-
/O.CAN.KGSP.SV.W.0689.000000T0000Z-110927T0100Z/
YORK SC-
828 PM EDT MON SEP 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN YORK COUNTY IS
CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS MOVED NORTH OF YORK COUNTY. 

LAT...LON 3534 8099 3533 8098 3530 8101 3521 8101
      3515 8103 3516 8133 3526 8132 3527 8134
      3541 8129 3540 8096 3537 8098 3536 8097
      3537 8094
TIME...MOT...LOC 0028Z 203DEG 15KT 3536 8106

$$

NCC071-270100-
/O.CON.KGSP.SV.W.0689.000000T0000Z-110927T0100Z/
GASTON NC-
828 PM EDT MON SEP 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR GASTON COUNTY...

AT 825 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
 THIS STORM WAS LOCATED NEAR STANLEY...OR 9 MILES NORTHEAST OF
GASTONIA...MOVING NORTHEAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LUCIA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT FOR LARGE HAIL AND
DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR
WITH ANY THUNDERSTORM. SEEK SHELTER INDOORS AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM PASSES.

&&

LAT...LON 3534 8099 3533 8098 3530 8101 3521 8101
      3515 8103 3516 8133 3526 8132 3527 8134
      3541 8129 3540 8096 3537 8098 3536 8097
      3537 8094
TIME...MOT...LOC 0028Z 203DEG 15KT 3536 8106

$$

RWH

138 
WWUS52 KGSP 270046
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
846 PM EDT MON SEP 26 2011

NCC071-270056-
/O.CAN.KGSP.SV.W.0689.000000T0000Z-110927T0100Z/
GASTON NC-
846 PM EDT MON SEP 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR GASTON COUNTY IS CANCELLED...

THE STORMS THAT PROMPTED THE WARNING HAVE WEAKENED AND MOVED NORTH 
OF THE COUNTY.

LAT...LON 3534 8099 3533 8098 3530 8101 3521 8101
      3515 8103 3516 8133 3526 8132 3527 8134
      3541 8129 3540 8096 3537 8098 3536 8097
      3537 8094
TIME...MOT...LOC 0046Z 203DEG 15KT 3543 8102

$$

RWH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
735 PM EDT MON SEP 26 2011

.SYNOPSIS...
A COLD FRONT WILL CROSS THE CAROLINAS AND NORTHEAST GEORGIA THROUGH
THE OVERNIGHT AND REACH THE EAST COAST ON TUESDAY. A STRONGER COLD
FRONT WILL PUSH ACROSS THE REGION ON FRIDAY AND BRING A COOLER AND DRIER
CANADIAN AIR MASS IN FOR THE WEEKEND.

&&

.NEAR TERM /THROUGH TUESDAY/...
SPC MESOANALYSIS DEPICTS SBCAPES OF 2500 J/KG EXTENDING UP INTO
THE PIEDMONT WHERE ROBUST TSTMS HAVE BEEN OCCURRING OVER THE PAST
FEW HOURS. AS THE EVENING WEARS ON...WOULD EXPECT DIURNAL PIEDMONT
STORMS TO DIMINISH...BUT WITHIN THE RUC/S DEPICTION OF STRENGTHENING
LLVL MOISTURE CONVERGENCE CLOSER TO ENCROACHING FRONTAL ZONE...DEEP
CONVECTION WILL HAVE THE POTENTIAL TO EXPAND AND STRENGTHEN. DEEPER
MOISTURE BAND WILL CONTINUE TO TRANSLATE EAST ACRS THE BALANCE OF
THE CWFA INTO THE OVERNIGHT HOURS. WITHIN THE MOIST AND HUMID
AIRMASS...MIN TEMPS TUESDAY MORNING WILL BE SVRL CATEGORIES ABOVE
CLIMO. BELOW NORMAL PWAT VALUES ARE PROGGED TO SURGE EAST ACRS THE
CWFA ON TUESDAY AND THE DEEP DRYING WILL QUICKLY LESSEN DEEP
CONVECTIVE CHANCES TO LESS THAN SLIGHT CHANCE. THE POST-FRONTAL
AIRMASS SETTLING ATOP THE REGION DOES MEAN COOLER TEMPS AS MAXES
ARE FCST TO BE SVRL CATEGORIES ABOVE NORMAL.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/...
AS OF 150 PM MONDAY...THE UPPER LOW CONTINUES TO BE CUTOFF FROM
WESTERLY FLOW ON WED AND AN OCCLUDED SFC FRONT WILL REMAIN TO THE
SOUTH OF THE CWFA. GOOD AGREEMENT IS HAD IN THE MODELS WRT TO THE
UPPER LEVEL FEATURES...HOWEVER THE HANDLING OF THE SFC FRONT IS NOT
SO CERTAIN. WITH THE 12Z NAM IS FURTHER NORTH WITH THE
FRONT...BASICALLY ACROSS THE SC MIDLANDS TUE...AND THE GFS KEEPING
IT SHUNTED OVER THE LOW COUNTRY. POPS WERE THEREFORE ADJUSTED VERY
LITTLE AND IF ANYTHING TAKEN DOWN A COUPLE PERCENT ACROSS THE
UPSTATE. STILL...ONLY SLIGHT CHANCES AND ONLY ACROSS THE EXTREME SRN
ZONES.

THERE SHOULD BE SOME DEGREE OF LOW END MTN INTERACTION WITH THE
UPPER LOW AS IT STRETCHES SOUTH AND FINALLY PULLS NE THU...BUT WITH
LIMITED MOISTURE AND AN OVERALL LARGE SCALE SUBSIDENCE ZONE MOVING
INTO THE REGION...POPS WERE AGAIN CHANGED LITTLE AND LEFT AS SLIGHT.
ALSO...GIVEN THE POOR PERFORMANCE OF THE MODELS WITH THE CUTOFF LOW
AND IT/S SENSIBLE WX CONNECTION THE PAST SEVERAL DAYS...THERE IS LOW
CONFIDENCE IN THE DEGREE AND TYPE OF STORM ACTIVITY THAT MAY
PREVAIL. RIGHT NOW...WILL COUNT ON MAINLY RAIN SHOWERS WITH PERHAPS
AN ISOL TSTM OR TWO. SBCAPE VALUES ARE VERY LOW TUE AND CAPPED OFF
SHALLOW WED DUE TO THE SUB INVERSION. MAX TEMPS STILL LOOK WARM WED
WITH GOOD INSOLATION EXPECTED AREA WIDE AND A DEEPENING S/LY FLOW.
ON THU...MAXES WILL AGAIN BE ABOVE NORMAL WITH W/LY LLVL FLOW
CONTRIBUTING A WARMING DOWNSLOPE COMPONENT.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
AS OF 230 PM MONDAY...MODELS STILL IN GOOD AGREEMENT SHOWING A
SHORTWAVE TROF DIGGING SE ALONG THE W EDGE OF THE MEAN TROF OVER THE
E US THU NIGHT. AN ASSOC COLD FRONT WILL PUSH QUICKLY SE ACROSS THE
AREA EARLY FRI. WITH A DRY AIRMASS IN PLACE AND LITTLE MOISTURE WITH
THE SYSTEM...EXPECT JUST SLIGHT CHC POPS OVER MAINLY THE N MTNS.
HIGHS FRI WILL BE WITHIN A DEG OR TWO OF AVG.

BEHIND THE FRONT A MUCH COOLER CANADIAN AIRMASS WILL DROP S ACROSS
THE REGION AND TEMPS WILL TAKE A TUMBLE AS THKNS VALUES FALL. HIGHS
WILL TOP OUT ABOUT 10 DEG BELOW AVG SAT AFTN WITH LOWS SAT NIGHT ALSO
ABOUT 10 DEG BELOW AVG. TEMPS SUN-MON WILL BE WELL BELOW AVG AS WELL
AND FROST AT SOME OF THE HIGHER ELEVATIONS...MAINLY RIDGETOPS...CAN
BE EXPECTED.

&&

.AVIATION /00Z TUESDAY THROUGH SATURDAY/...
AT KCLT...TSTMS WILL BE AROUND IF NOT BRIEFLY AT THE TERMINAL
THROUGH ABOUT 01Z...AND THEN CONCERNS FOR LATER TONIGHT CENTER
AROUND DEVELOPING CIG RESTRICTIONS AND MORE SHOWERS ENCROACHING
FROM THE WEST. LATEST MODEL CONSENSUS EVENTUALLY LOWERS CIGS TO
IFR DURING THE LATE NIGHT/PRE-DAWN HOURS. BEST SHOWER CHANCES
WILL THE APPROACHING FRONT LOOK TO LIFT NW OF THE TERMINAL
OVERNIGHT. VFR CONDS SHOULD QUICKLY DEVELOP TUESDAY MORNING
AND REMAIN ALL DAY.

ELSEWHERE...DIURNALLY FIRED LOCALLY ROBUST PIEDMONT TSTMS SHOULD
DIMINISH THROUGH MID-EVENING...BUT SHOWERS AND EMBEDDED TSTMS WILL
SPREAD FROM THE MTNS INTO THE FTHLS TONIGHT AND DIMINISH OVERNIGHT
AS THEY ENTER THE PIEDMONT. CIG RESTRICTIONS SHOULD BECOMING
WIDESPREAD AGAIN TONIGHT...BUT QUICKLY IMPROVE TUE MORNING.

OUTLOOK....A SLOW AND STEADY DRYING TREND IS INDICATED FROM TUESDAY
ONWARD THIS WEEK. ANOTHER COLD FRONT WILL ARRIVE FROM THE NW FRIDAY.

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...SBK
NEAR TERM...CSH/JAT
SHORT TERM...SBK
LONG TERM...RB
AVIATION...CSH/JAT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
146 PM EDT MON SEP 26 2011

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-271800-
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-
146 PM EDT MON SEP 26 2011

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 TO NUMEROUS THUNDERSTORMS WILL DEVELOP ALONG AND AHEAD
OF AN APPROACHING COLD FRONT THIS AFTERNOON AND EVENING. THESE
THUNDERSTORMS WILL LIKELY PRODUCE CLOUD TO GROUND LIGHTNING AND
HEAVY DOWNPOURS. SEVERAL OF THESE STORMS MAY ALSO BECOME
SEVERE...PRODUCING DAMAGING WIND GUSTS AND LARGE HAIL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

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.

07

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
639 PM EDT MON SEP 26 2011

NCZ082-262330-
UNION-
639 PM EDT MON SEP 26 2011

...A STRONG THUNDERSTORM WILL AFFECT UNION COUNTY THROUGH 730 PM
EDT...

AT 636 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES SOUTHEAST OF MINERAL SPRINGS...OR 8 MILES
SOUTHWEST OF MONROE...MOVING NORTH AT 15 MPH.

THIS STORM WILL BE NEAR...
  MINERAL SPRINGS...
  MONROE...
  WINGATE...
  STALLINGS...
  UNIONVILLE...

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

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

LAT...LON 3481 8054 3481 8062 3485 8076 3510 8069
      3521 8055 3517 8046 3517 8039 3518 8037
      3517 8035 3519 8031 3519 8028

RWH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
659 PM EDT MON SEP 26 2011

NCZ071-072-262345-
CABARRUS-MECKLENBURG-
659 PM EDT MON SEP 26 2011

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN MECKLENBURG AND
WESTERN CABARRUS COUNTIES THROUGH 745 PM EDT...

AT 656 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES SOUTH OF HARRISBURG...OR 5 MILES
SOUTHEAST OF UNC CHARLOTTE...MOVING NORTH AT 20 MPH.

THIS STORM WILL BE NEAR...
  HARRISBURG...
  CHARLOTTE MOTOR SPEEDWAY...
  HUNTERSVILLE...
  CONCORD...
  KANNAPOLIS...

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

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

LAT...LON 3518 8058 3516 8061 3521 8091 3551 8083
      3550 8044

RWH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
713 PM EDT MON SEP 26 2011

NCZ069>071-270000-
GASTON-LINCOLN-MECKLENBURG-
713 PM EDT MON SEP 26 2011

...A STRONG THUNDERSTORM WILL AFFECT EASTERN LINCOLN...NORTHERN
GASTON AND WESTERN MECKLENBURG COUNTIES THROUGH 800 PM EDT...

AT 712 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR RANLO...OR 3 MILES NORTHEAST OF GASTONIA...
MOVING NORTHEAST AT 15 MPH.

THIS STORM WILL BE NEAR...
  STANLEY...
  PAW CREEK...
  IRON STATION...
  MOUNTAIN ISLAND LAKE...
  LOWESVILLE...

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

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

LAT...LON 3520 8091 3526 8132 3555 8115 3555 8099
      3554 8095 3553 8094 3553 8096 3550 8096
      3549 8095 3552 8090 3551 8083

RWH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
744 PM EDT MON SEP 26 2011

NCZ070-SCZ009-270030-
GASTON-YORK-
744 PM EDT MON SEP 26 2011

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN GASTON AND WESTERN YORK
COUNTIES THROUGH 830 PM EDT...

AT 740 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR SHARON...OR 7 MILES WEST OF YORK...MOVING
NORTHEAST AT 15 MPH.

THIS STORM WILL BE NEAR...
  YORK...
  CLOVER...

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

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

LAT...LON 3515 8105 3486 8128 3492 8148 3505 8144
      3505 8141 3514 8140 3517 8136 3516 8134
      3517 8133 3526 8133 3522 8101 3518 8101

RWH