Severe Thunderstorm Warning 120, NWS Greenville-Spartanburg, SC

483 
WWUS52 KGSP 262333
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
733 PM EDT THU APR 26 2012

NCC099-113-175-262343-
/O.EXP.KGSP.SV.W.0120.000000T0000Z-120426T2330Z/
MACON NC-TRANSYLVANIA NC-JACKSON NC-
733 PM EDT THU APR 26 2012

...THE SEVERE THUNDERSTORM WARNING FOR JACKSON...WEST CENTRAL
TRANSYLVANIA AND NORTHEASTERN MACON COUNTIES HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THIS AREA. 
HOWEVER...OTHER STRONG STORMS CONTINUE JUST TO THE EAST OF 
CULLOWHEE...AND SMALL HAIL AND TORRENTIAL RAIN IS STILL POSSIBLE IN 
THIS AREA.

LAT...LON 3532 8344 3532 8342 3532 8341 3533 8340
      3533 8334 3537 8333 3544 8320 3518 8290
      3506 8315
TIME...MOT...LOC 2215Z 303DEG 37KT 3512 8314

$$

MCAVOY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
457 PM EDT THU APR 26 2012

.SYNOPSIS...
A COLD FRONT WILL APPROACH THE AREA FROM THE NORTH RESULTING IN
UNSETTLED WEATHER. THIS COLD FRONT IS EXPECTED TO BECOME
STATIONARY FROM WEST TO EAST ACROSS OUR AREA FRIDAY AND SATURDAY.
THE FRONT WILL MOVE OFF TO THE SOUTH ON SUNDAY AS A CANADIAN HIGH
BUILDS OVER THE REGION. THEN THE HIGH WILL LINGER THROUGH THE EARLY
PART OF NEXT WEEK.

&&

.NEAR TERM /THROUGH FRIDAY/...
AS OF 440 PM...NUMEROUS SHOWERS AND STORMS CONTINUE TO DEVELOP ALONG
APPARENT DIFFERENTIAL HEATING BOUNDARY OVER THE CENTRAL AND SOUTHERN
NC MTNS. THE AIR MASS IN THIS AREA IS MODERATELY UNSTABLE...WITH
CAPE IN EXCESS OF 1000 J/KG. THE AIR MASS OVER MUCH OF THE CENTRAL
MOUNTAINS HAS BEEN OVERTURNED BY SEVERAL WAVES OF CONVECTION...SO
NEW CONVECTION HAS BEEN GRADUALLY DEVELOPING FARTHER SOUTH WITH
TIME. WITH THIS IN MIND...WILL EXPAND LIKELY POPS SOUTH ACROSS THE
MTNS INTO EARLY EVENING...WITH THE GA/SC MTNS EXPECTED TO EVENTUALLY
GET INVOLVED. MEANWHILE...MUCH OF THE EASTERN HALF OF THE AREA HAS
BEEN UNABLE TO COMPLETELY RECOVER FROM THIS MORNINGS MCS...SO
CONVECTION HAS TENDED TO WEAKEN IF NOT DISSIPATE AS IT MOVES OFF THE
EASTERN ESCARPMENT.

THE INTERESTING AREA TO WATCH THROUGH THE REMAINDER OF THE EVENING
WILL BE THE UPPER SAVANNAH RIVER VALLEY...WHERE THE ATM HAS
DESTABILIZED QUITE NICELY (CAPE > 1500 J/KG) OWING TO TEMPS WARMING
INTO THE 80S AND ABNORMALLY STEEP (FOR OUR AREA) MID-LEVEL LAPSE
RATES. IF OUTFLOWS FROM MTN CONVECTION INTERACT WITH THIS
ENVIRONMENT...SOME VERY STRONG/SEVERE CELLS WOULD LIKELY DEVELOP
WITH THE POTENTIAL FOR LARGE HAIL DUE TO THE STEEP MID-LEVEL LAPSES.

FINALLY...CONVECTION IS INITIATING RAPIDLY ALONG THE COLD FRONT OVER
THE TENN/OHIO VALLEYS. CONSIDERING THE DEGREE OF INSTABILITY AND
SHEAR THAT EXISTS IN THIS AREA...WOULD NOT BE AT ALL SURPRISED TO
SEE AN MCS ORGANIZE TO OUR WEST AND POSE A WIND THREAT TO THE
WESTERN MTNS BETWEEN 00Z AND 01Z.

OVERNIGHT TEMPS WILL BE ABOVE NORMAL OVERNIGHT UNDER THE DEBRIS
CLOUDINESS.

FRIDAY...MODELS CONTINUE THEIR TREND OF A MORE SOUTHERN PUSH OF THE
COLD FRONT. THEY ALSO AGREE ON DECENT INSTBY ALONG/SOUTH OF THE
BNDRY AS IT STARTS TO LIFT NORTH AS A WARM FRONT DURING THE AFTN.
TOOK A MODEL BLEND FOR POPS. THIS HIGHLIGHTS THE NE GA AND UPSTATE
ZONES. SPC DAY 2 OUTLOOK HAS A SEE TEXT 5% FOR THOSE AREAS. SHEAR
WILL BE WEAKER...BUT ANOTHER SHORTWAVE WILL RIPPLE THRU QUASI-ZONAL
FLOW DURING PEAK HEATING...WITH FCST SNDGS SHOWING LESS CIN THAN
TODAY.

&&

.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/...
AS OF 205 PM THURSDAY...A WEAK UPPER RIDGING WILL BUILD INTO THE
SOUTHEAST U.S. FRI NIGHT-SAT...THEN WEAKENS SLIGHTLY SAT NIGHT
BEFORE CONTINUING TO BUILD OVER THE AREA SUN. THE SFC BOUNDARY WILL
PUSH N AS A WARM FRONT FRI NIGHT-EARLY SAT WITH BEST FORCING N OF
THE CWA. WE KEPT SLIGHT CHC POPS OVER MAINLY THE MTNS AND N ZONES
THRU SAT. AS A SFC RIDGE BUILDS INTO THE AREA FROM THE NE WITH SE
SFC FLOW SETTING UP. UPSLOPE FORCING SHOULD BE ENOUGH TO MAINTAIN
SLIGHT CHC POPS THRU THE DAY SUN...MAINLY OVER THE MTNS. EXPECT
TEMPS ABOVE AVG SAT AND SUN WITH COLDER AIR PUSHING IN FROM THE NE
DURING THE DAY SUN TO KEEP TEMPS BELOW AVG IN THE FAR NE CWA IN THE
AFTN.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
AS OF 205 PM THURSDAY...HEIGHTS RISE SUN NIGHT-MON AS UPPER TROF
MOVES OFF THE NE COAST AND UPPER RIDGE BUILDS INTO THE SE US. COLD
AIR DAMMING CONTINUES TO DEVELOP SUN NIGHT AND SETTLES OVER THE AREA
MON. STILL EXPECT ENOUGH LOW LVL MOISTURE AND FORCING FOR SLIGHT CHC
POPS ACROSS THE AREA. WEDGE WEAKENS TUE AND SFC BOUNDARY MOVES N OF
THE AREA AND STAYS N THRU THE PERIOD. THIS PUTS CWA BACK IN THE WARM
SECTOR SO WITH MOIST S FLOW DEVELOPING WE HELD ON TO MENTION OF
SLIGHT CHC OF MAINLY AFTN SHWRS AND TSTMS TUE-WED DEVELOPING MOIST
SLY FLOW AND DIURNAL INSTABILITY. TEMPS WILL BE BELOW AVG MON...THEN
BACK ABOVE AVG TUE-THU.

&&

.AVIATION /21Z THURSDAY THROUGH TUESDAY/...
AT KCLT...MAIN CONCERN NEXT COUPLE OF HOURS WILL BE A SMALL LINE OF
CONVECTION TRACKING SOUTH OF THE TERMINAL. NOT EXPECTING A DIRECT
IMPACT ATTM...BUT THE SUBTLE BNDRY THIS ACTIVITY IS FIRING ALONG IS
SLOWLY DRIFTING NWD. SO ADDITIONAL DEVELOPMENT TO THE WEST MAY
AFFECT KCLT. OTHERWISE...EXPECT VFR WITH GUSTY SW WINDS THIS AFTN
AFTN. THERE MAY BE ANOTHER ROUND OF CONVECTION THIS EVENING...AS A
COLD FRONT WILL PUSH THRU THE AREA OVERNIGHT. CONFIDENCE IS TOO LOW
THIS TIME...BUT MOST LIKELY TIME OF IMPACT SHUD BE IN THE 00Z TO 06Z
TIME FRAME. WINDS WIL SHIFT NW BEHIND THE FRONT...THEN NE FRIDAY
MORNING AND REMAIN LIGHT. DEBRIS CLOUDINESS ASSOCIATED WITH THE
CONVECTION SHUD BE VFR.

ELSEWHERE...A CLUSTER OF STORMS ARE MOVING INTO THE CENTRAL NC MTNS
ATTM...AND WILL BE VCTS AT KAVL FOR NEXT COUPLE OF HOURS. CONVECTION
MAY START TO DEVELOP LATER THIS AFTN ACRS THE REMAINDER OF THE
AREA...SO VCTS WILL BE CARRIED. ANOTHER ROUND OF CONVECTION IS
EXPECTED TO AFFECT THE REGION LATE THIS AFTN THRU THE EVENING...AS A
COLD FRONT PUSHES THRU FROM THE NORTHWEST. CONVECTION SHUD WANE
AFTER 06Z AND WINDS WILL SHIFT TO N/NW BEHIND THE FRONT. DEBRIS
CLOUDINESS SHUD BE VFR.

OUTLOOK...A COLD FRONT WILL LINGER INVOF THE FORECAST AREA THRU
FRIDAY NIGHT. MAINLY PM SHOWERS/THUNDERSTORMS AND MORE WIDESPREAD
RESTRICTIONS WILL BE POSSIBLE FRI AFTN AND OVERNIGHT. THE FRONT
LIFTS NORTH SATURDAY...BUT THEN DROPS BACK IN SUNDAY. SO PERIODS OF
RESTRICTIONS IN CLOUDS/PRECIP EXPECTED THRU THE WEEKEND.

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...ARK/JDL
SHORT TERM...RB
LONG TERM...RB
AVIATION...ARK

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
517 PM EDT THU APR 26 2012

NCZ033-048>053-058-059-062>065-501-503-505-507-509-272130-
AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-GRAHAM-
NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-
CALDWELL MOUNTAINS-BURKE MOUNTAINS-MCDOWELL MOUNTAINS-
RUTHERFORD MOUNTAINS-POLK MOUNTAINS-
517 PM EDT THU APR 26 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA.

.DAY ONE...TONIGHT.

SCATTERED TO NUMEROUS THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER
THE SOUTHERN AND CENTRAL MOUNTAINS OF NORTH CAROLINA THROUGH EARLY
EVENING. SOME OF THESE STORMS WILL CONTINUE TO BE SEVERE...WITH
LARGE HAIL AND DAMAGING WINDS BEING THE PRIMARY THREATS.

MEANWHILE...ADDITIONAL SHOWERS AND THUNDERSTORMS DEVELOPING FROM
NORTHERN MIDDLE TENNESSEE TO EASTERN KENTUCKY ARE EXPECTED TO
APPROACH WESTERN NORTH CAROLINA AFTER 8 PM. THESE STORMS WILL
PRODUCE AN ADDITIONAL SEVERE WEATHER THREAT...ESPECIALLY ACROSS
THE TENNESSEE BORDER COUNTIES. THE PRIMARY CONCERNS WOULD BE WITH
DAMAGING WINDS...ALTHOUGH ISOLATED LARGE HAIL WILL ALSO BE
POSSIBLE.

IT ADDITION TO THE SEVERE WEATHER THREAT...MANY AREAS OF THE
MOUNTAINS...ESPECIALLY ACROSS THE SMOKY MOUNTAINS AND SURROUNDING
AREAS HAVE SEEN SEVERAL WAVES OF VERY HEAVY RAINFALL. ADDITIONAL
HEAVY RAINFALL ASSOCIATED WITH THE THUNDERSTORMS THAT WILL AFFECT
THE AREA LATER THIS EVENING WILL RESULT IN A LOCALIZED FLASH
FLOODING THREAT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

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.

GAZ010-017-018-026-028-029-SCZ001>006-010>012-019-272130-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-ANDERSON-ABBEVILLE-LAURENS-
GREENWOOD-
517 PM EDT THU APR 26 2012

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

.DAY ONE...TONIGHT.

NUMEROUS THUNDERSTORMS OVER SOUTHWEST NORTH CAROLINA ARE EXPECTED
TO GRADUALLY BUILD SOUTH INTO THE MOUNTAINS OF GEORGIA AND SOUTH
CAROLINA...AS WELL AS THE UPPER SAVANNAH RIVER VALLEY THIS EVENING.
SOME SEVERE STORMS WILL BE POSSIBLE...WITH LARGE HAIL AND DAMAGING
WINDS BEING THE MAIN THREATS. LOCALLY VERY HEAVY RAINFALL WILL
ALSO OCCUR WITH THE STRONGER STORMS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

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.

NCZ035>037-056-057-068>072-082-502-504-506-508-510-SCZ007>009-013-
014-272130-
ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN-CLEVELAND-LINCOLN-GASTON-
MECKLENBURG-CABARRUS-UNION NC-GREATER CALDWELL-GREATER BURKE-
EASTERN MCDOWELL-GREATER RUTHERFORD-EASTERN POLK-SPARTANBURG-
CHEROKEE-YORK-UNION SC-CHESTER-
517 PM EDT THU APR 26 2012

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

.DAY ONE...TONIGHT.

ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE ACROSS THE
EASTERN PIEDMONT OF SOUTH CAROLINA AND THE NORTH CAROLINA
FOOTHILLS AND WESTERN PIEDMONT THROUGH EARLY EVENING. ALTHOUGH
THE MAIN THREATS WILL BE FROM CLOUD TO GROUND LIGHTNING AND
LOCALLY HEAVY RAINFALL...AND ISOLATED STORM OR TWO COULD PRODUCE
LARGE HAIL AND LOCALLY DAMAGING WIND GUSTS.

A MORE ORGANIZED SEVERE WEATHER THREAT WILL BE POSSIBLE LATER THIS
EVENING...PARTICULARLY ACROSS THE FOOTHILLS...AS A LINE OF SHOWERS
AND THUNDERSTORMS IS EXPECTED TO MOVE OUT OF EAST TENNESSEE AND
ACROSS THE NORTH CAROLINA MOUNTAINS. DAMAGING WIND GUSTS WILL BE
THE MAIN THREAT WITH THIS ACTIVITY.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

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.

LANE

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
540 PM EDT THU APR 26 2012

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

0513 PM     HAIL             9 WNW BRYSON CITY       35.47N 83.59W
04/26/2012  E0.88 INCH       SWAIN              NC   PUBLIC

&&

LG

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
548 PM EDT THU APR 26 2012

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

0525 PM     HAIL             4 NNW FRANKLIN          35.24N 83.41W
04/26/2012  E1.00 INCH       MACON              NC   TRAINED SPOTTER

&&

LG

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
553 PM EDT THU APR 26 2012

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

0312 PM     HAIL             2 WSW CANDLER           35.53N 82.73W
04/26/2012  E1.00 INCH       BUNCOMBE           NC   PUBLIC

            HAIL NICKEL TO QUARTER SIZED WITH ENOUGH WIND TO BLOW
            DOWN SMALL LIMBS.

&&

OUTLAW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
557 PM EDT THU APR 26 2012

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

0455 PM     HAIL             10 NW BRYSON CITY       35.51N 83.60W
04/26/2012  E1.25 INCH       SWAIN              NC   PUBLIC

&&

LG

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
601 PM EDT THU APR 26 2012

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

0543 PM     HAIL             7 E FRANKLIN            35.19N 83.25W
04/26/2012  E1.00 INCH       MACON              NC   PUBLIC

            HAIL UP TO QUARTER SIZED REPORTED THROUGH COCORAHS.

&&

OUTLAW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
604 PM EDT THU APR 26 2012

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

0550 PM     HAIL             6 WNW CASHIERS          35.15N 83.18W
04/26/2012  E1.75 INCH       JACKSON            NC   TRAINED SPOTTER

&&

RB