Severe Thunderstorm Warning 133, NWS Greenville-Spartanburg, SC

118 
WWUS52 KGSP 272132
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
532 PM EDT FRI APR 27 2012

SCC045-077-272145-
/O.CON.KGSP.SV.W.0133.000000T0000Z-120427T2145Z/
GREENVILLE SC-PICKENS SC-
532 PM EDT FRI APR 27 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
PICKENS AND CENTRAL GREENVILLE COUNTIES UNTIL 545 PM EDT...

AT 527 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 5 MILES WEST OF FURMAN UNIVERSITY...OR 9 MILES
NORTHWEST OF DOWNTOWN GREENVILLE...MOVING SOUTHEAST AT 15 MPH.

THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...  
   FURMAN UNIVERSITY...BEREA AND DOWNTOWN GREENVILLE.

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 3491 8279 3502 8272 3503 8253 3506 8222
      3503 8222 3479 8224
TIME...MOT...LOC 2132Z 292DEG 12KT 3492 8251

$$

MCAVOY

203 
WWUS52 KGSP 272145
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
545 PM EDT FRI APR 27 2012

SCC045-077-272155-
/O.EXP.KGSP.SV.W.0133.000000T0000Z-120427T2145Z/
GREENVILLE SC-PICKENS SC-
545 PM EDT FRI APR 27 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PICKENS AND CENTRAL
GREENVILLE COUNTIES HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LEVELS.  HOWEVER SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL
POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3491 8279 3502 8272 3503 8253 3506 8222
      3503 8222 3479 8224
TIME...MOT...LOC 2145Z 292DEG 12KT 3490 8246

$$

MCAVOY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
244 PM EDT FRI APR 27 2012

.SYNOPSIS...
A STATIONARY FRONT WILL REMAIN IN THE AREA THROUGH SATURDAY BEFORE
LIFTING NORTHWARD AS A WARM FRONT SATURDAY NIGHT. THE FRONT MAY
RETURN AGAIN AS A BACKDOOR COLD FRONT ON SUNDAY AS HIGH PRESSURE
BUILDS FROM THE GREAT LAKES TO THE MID ATLANTIC. THE FRONT WILL
DISSIPATE ACROSS THE REGION EARLY NEXT WEEK...WITH BERMUDA HIGH
PRESSURE SETTING UP THROUGH THE WEEK.

&&

.NEAR TERM /THROUGH SATURDAY/...
AT 215 PM FRI...18Z SURFACE ANALYSIS INDICATES THAT THE SURFACE
BOUNDARY CONTINUES TO LIE FROM NE GA...EAST ACROSS UPSTATE SC TO
JUST SOUTH OF CHARLOTTE. THE BOUNDARY SEPARATES LOW TO MID 60'S
DEWPOINT AIR FROM MIDDLE 50S OR SO TO THE NORTH. LAPS ANALYSIS
INDICATES CAPES HAVE INCREASED TO 2500J/KG ACROSS NE GA/UPSTATE SC.
STORMS HAVE BEGUN TO FIRE OVER NE GA AND THE WESTERN UPSTATE AND
EXPECT THAT COVERAGE WILL BECOME NUMEROUS OVER MUCH OF NE GA AND THE
UPSTATE BY LATE AFTERNOON. SCT TYPE COVERAGE OF STORMS MAY EXTEND AS
FAR NORTH AS THE SC/NC BORDER. A FEW SEVERE STORMS WITH LARGE HAIL
AND DAMAGING WINDS ARE POSSIBLE. HOWEVER...BEST DCAPE ACCORDING TO
SPC MESO ANAL CONTINUES TO BE OVER THE MIDLANDS.

THE 12Z NAM AND SOME MESO MODELS INDICATE THE CLUSTER OF
SHOWERS/STORMS WILL BE SOMEWHAT TRANSIENT THIS AFTERNOON INTO THE
EVENING AS AN UPPER VORT MOVES BY. THE GFS HOLDS ONTO PRECIP LONGER
AFTER 00Z...SO HAVE COMPROMISED SOME AND HELD ONTO POPS INTO THE
EVENING HOURS OVER THE EASTERN PORTION OF THE UPSTATE AND AREAS
SOUTH AND EAST OF CHARLOTTE.

OVERNIGHT...THE MODELS CONTINUE TO SHOW A WEDGE TYPE PATTERN DEVELOPING
WITH A RATHER MOIST NE FLOW DEVELOPING BY SATURDAY MORNING.
HENCE...EXPECT MOSTLY CLOUDY/CLOUDY CONDITIONS TO BE THE RULE THROUGH
THE OVERNIGHT. THE NAM DOES NOT GENERATE ANY QPF LATE TONIGHT SO
HAVE LOWERED POPS TO BELOW MENTIONABLE VALUES.

ON SATURDAY...WILL GENERALLY FOLLOW THE NAM WHICH INDICATES THE DAY
WILL BEGIN WITH A CONTINUATION OF THE WEDGE. HOWEVER...THE MODEL
TRIES TO WASH OUT THE WEDGE BY LATE IN THE DAY. MODEL SOUNDINGS
INDICATE THAT ATMOSPHERE SHOULD REMAIN CAPPED FOR THE MOST PART.
SOME ELEVATED CAPE IS INDICATED BY LATE AFTERNOON...BUT THERE IS NO
MODEL RESPONSE...SO HAVE KEPT POPS LOW. ALSO...STAYED ON THE LOW
SIDE OF GUIDANCE TEMPS WITH HIGHEST TEMPS STRATIFIED FROM SW TO
NE.

&&

.SHORT TERM /SATURDAY NIGHT THROUGH MONDAY/...
AS OF 215 PM FRIDAY...EXPECT WEAK SHORTWAVE ENERGY TO MOVE THRU
FAIRLY ZONAL UPPER FLOW SAT NIGHT-SUN. THE SFC BOUNDARY WILL BE N OF
THE CWA SO TEMPS WILL BE ABOVE AVG. MOISTURE WILL BE LIMITED BUT
EXPECT ENOUGH HEATING AND FORCING ACROSS THE N TIER...CLOSER TO THE
FRONT...FOR SLIGHT CHC POPS SUN AFTN. HIGH PRES OVER THE NE U.S.
WILL BEGIN TO PUSH FARTHER S SUN AFTN AND DRIVE THE E EXTENT OF THE
FRONT DOWN INTO CNTRL NC...SO BUMPED POPS UP OVER THE NE ZONES FOR
LATE IN THE DAY. UPPER RIDGE AXIS WILL BUILD AND MOVE ACROSS THE
REGION SUN NIGHT-MON WITH INCREASING HEIGHTS OVER THE AREA. COOLER
NE FLOW DOWN THE E SIDE OF THE MTNS IS EXPECTED TO SET UP A WEAK
COLD AIR DAMMING SCENARIO MON AND TEMPS WILL BE COOLER...BLO AVG
OVER THE NE ZONES...NEAR AVG CNTRL CWA...AND ABOVE AVG TO THE SW.
LOW LVL E FLOW WILL INCREASE AND PUSH AT LEAST SOME ATLANTIC
MOISTURE TOWARD THE MTNS SO HELD ON TO SLIGHT CHC POPS ACROSS THE
AREA THRU MON AFTN.

&&

.LONG TERM /MONDAY NIGHT THROUGH THURSDAY/...
AS OF 220 PM FRIDAY...UPPER RIDGE WILL TRY TO SLOWLY BUILD TUE-THU
BUT WEAK SHORTWAVES MOVG THRU THE UPPER FLOW WILL KEEP HEIGHTS
FLUCTUATING OVER THE REGION WITH LITTLE NET LOSS OR GAIN DAY TO DAY.
HIGH PRESSURE OFF THE SE COAST WILL KEEP THE LOW LEVELS IN WARM...
MOIST S FLOW WHICH MEANS ABOVE AVG TEMPS ACROSS THE AREA WITH AT
LEAST A SLIGHT CHANCE OF DIURNALLY ENHANCED CONVECTION EACH DAY.
UPPER RIDGE MOVES E FRI AS A WEAK UPPER WAVE APPROACHES FROM THE W.
EXPECT SLIGHT CHC POPS...PSBL CHC MTNS...FRI AFTN.

&&

.AVIATION /19Z FRIDAY THROUGH WEDNESDAY/...
AT KCLT...MAIN CHALLENGE THIS AFTERNOON IS WHETHER THUNDERSTORMS
WILL AFFECT THE AIRFIELD LATE IN THE DAY. A FRONTAL BOUNDARY IS
SITUATED JUST TO THE SOUTH AND WILL ACT AS A TRIGGERING MECHANISM
FOR STORMS. IT SEEMS THAT THE MOST SIGNIFICANT CONVECTION WILL STAY
SOUTH OF THE AIRFIELD...BUT HAVING SAID THAT...IT MAY GET WITHIN THE
5NM AIRSPACE. HENCE...HAVE DECIDED TO CARRY VCTS FROM 21-23Z.
OTHERWISE VFR CIGS FOR THE OVERNIGHT...LOWERING TO MVFR CIRCA 12Z AS
AS A MOIST NE WEDGE FLOW PREDOMINATES.

ELSEWHERE...EXPECT THUNDERSTORMS TO DEVELOP ALONG THE EAST TO WEST
ORIENTED BOUNDARY ACROSS UPSTATE SC BY MID AFTERNOON. WILL CARRY A
TEMPO FOR TSRA AT ALL UPSTATE AIRFIELDS. KAVL/KHKY SHOULD REMAIN
NORTH OF THE ACTION. EXPECT CONVECTION TO MOVE EAST OF THE AREA BY
00Z. EXPECT A WEDGE TO DEVELOP OVERNIGHTWITH THE USUAL MOIST NE
FLOW. HENCE...VFR CIGS SHOULD LOWER TO MVFR BY ABOUT 12Z.

OUTLOOK...THE FRONTAL BOUNDARY WILL MOVE NORTH OF THE AREA SATURDAY
NIGHT. HENCE...GENRALLY VFR CONDITIONS ARE EXPECTED THROUGH SUNDAY.
THE FRONT WILL THEN SAG BACK INTO THE AREA LATE SUNDAY AFTERNOON
TRIGGERING AT LEAST SCATTERED THUNDERSTORMS MAINLY OVER NC. THE
FRONT WILL REMAIN IN THE VICINITY OF THE AREA THROUGH THE FIRST PART
OF THE NEW WORK WEEK...RESULTING IN CONTINUATION OF UNSETTLED
WEATHER/PM SHOWERS AND STORMS AND POSSIBLE RESTRICTIONS THROUGH THAT
TIME.

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...HG
NEAR TERM...LG
SHORT TERM...RB
LONG TERM...RB
AVIATION...LG

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
730 AM EDT FRI APR 27 2012

NCZ033-035>037-048>053-056>059-068>072-501>508-281130-
AVERY-ALEXANDER-IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-
BUNCOMBE-CATAWBA-ROWAN-GRAHAM-NORTHERN JACKSON-CLEVELAND-LINCOLN-
GASTON-MECKLENBURG-CABARRUS-CALDWELL MOUNTAINS-GREATER CALDWELL-
BURKE MOUNTAINS-GREATER BURKE-MCDOWELL MOUNTAINS-EASTERN MCDOWELL-
RUTHERFORD MOUNTAINS-GREATER RUTHERFORD-
730 AM EDT FRI APR 27 2012

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

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

GAZ010-017-018-026-028-029-NCZ062>065-082-509-510-SCZ001>014-019-
281130-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-MACON-SOUTHERN JACKSON-
TRANSYLVANIA-HENDERSON-UNION NC-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-
730 AM EDT FRI APR 27 2012

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

.DAY ONE...TODAY AND TONIGHT.

A STATIONARY FRONT WILL SETTLE ACROSS THE NORTHEAST GEORGIA AND
NORTHERN SOUTH CAROLINA TODAY. THIS WILL PROVIDE A FOCUSING
MECHANISM FOR CONVECTIVE STORMS THIS AFTERNOON AND EVENING.
INSTABILITY WILL BE MODERATE WITH ENOUGH DEEP LAYERED SHEAR
TO PRODUCE STRONG TO SEVERE THUNDERSTORMS. THE MAIN THREAT FROM
THESE STORMS WILL BE LARGE HAIL. AS MID LEVEL DRY AIR MOVES IN
LATER IN THE AFTERNOON...DAMAGING WINDS WILL ALSO BECOME A
POSSIBILITY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
251 PM EDT FRI APR 27 2012

GAZ017-018-SCZ001-271915-
HABERSHAM-OCONEE MOUNTAINS-STEPHENS-
251 PM EDT FRI APR 27 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN HABERSHAM...NORTHERN
STEPHENS AND WESTERN OCONEE COUNTIES THROUGH 315 PM EDT...

AT 247 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR HOLLYWOOD...OR 6 MILES NORTHEAST OF
CLARKESVILLE...MOVING EAST AT 25 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO
  TURNERVILLE...TOCCOA...TALLULAH FALLS AND HOLLYWOOD.

DIME SIZE HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH
THIS STORM.

LAT...LON 3473 8347 3473 8336 3471 8335 3472 8335
      3471 8313 3461 8316 3460 8317 3459 8316
      3452 8318 3460 8351

MCAVOY

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
344 PM EDT FRI APR 27 2012

SCZ001-004-005-010-272030-
ANDERSON-GREATER OCONEE-GREATER PICKENS-OCONEE MOUNTAINS-
344 PM EDT FRI APR 27 2012

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL OCONEE...SOUTHWESTERN
PICKENS AND WESTERN ANDERSON COUNTIES THROUGH 430 PM EDT...

AT 338 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR WESTMINSTER...OR 6 MILES SOUTH OF
WALHALLA...MOVING EAST AT 20 MPH. ANOTHER STRONG STORM WAS LOCATED
NEAR TOWNVILLE IN ANDERSON COUNTY.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO
  WESTMINSTER...TOWNVILLE...SENECA...PENDLETON...OAKWAY...CLEMSON AND
  CENTRAL.

PEA SIZE HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH
THESE STORMS.

LAT...LON 3475 8266 3451 8281 3455 8292 3461 8317
      3477 8316

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
411 PM EDT FRI APR 27 2012

GAZ017-018-272045-
HABERSHAM-STEPHENS-
411 PM EDT FRI APR 27 2012

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL HABERSHAM AND WESTERN
STEPHENS COUNTIES THROUGH 445 PM EDT...

AT 406 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES NORTH OF CLARKESVILLE...MOVING EAST AT 15
MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO
  TURNERVILLE...TOCCOA...HOLLYWOOD...DEMOREST...CLARKESVILLE AND
  BOYDVILLE.

DIME SIZE HAIL...AND WIND GUSTS OF 30 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 3475 8361 3473 8350 3472 8348 3473 8347
      3471 8335 3469 8334 3468 8334 3467 8331
      3462 8327 3449 8334 3458 8363

MCAVOY

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
416 PM EDT FRI APR 27 2012

SCZ002-005-272045-
GREATER PICKENS-PICKENS MOUNTAINS-
416 PM EDT FRI APR 27 2012

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

AT 410 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTH OF ROCKY BOTTOM...OR 10 MILES
NORTHWEST OF PICKENS...MOVING EAST AT 15 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO ROCKY
  BOTTOM...PUMPKINTOWN AND DACUSVILLE.

DIME SIZE HAIL...AND WIND GUSTS OF 30 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 3497 8288 3506 8288 3508 8277 3507 8278
      3507 8276 3505 8274 3506 8271 3507 8258
      3505 8260 3503 8258 3501 8260 3501 8254
      3486 8254

MCAVOY

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
427 PM EDT FRI APR 27 2012

SCZ003-272100-
GREENVILLE MOUNTAINS-
427 PM EDT FRI APR 27 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN GREENVILLE COUNTY
THROUGH 500 PM EDT...

AT 422 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 5 MILES NORTHWEST OF TIGERVILLE...OR 15 MILES
SOUTH OF HENDERSONVILLE...MOVING EAST AT 15 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO TIGERVILLE
  AND GOWENSVILLE.

DIME SIZE HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH
THIS STORM.

LAT...LON 3509 8254 3516 8254 3515 8222 3506 8222
      3503 8233

MCAVOY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
439 PM EDT FRI APR 27 2012

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

0430 PM     HAIL             WSW OAKWAY              34.60N 83.03W
04/27/2012  M1.00 INCH       OCONEE             SC   TRAINED SPOTTER

            QUARTER SIZED HAIL.

&&

JOH