Severe Thunderstorm Warning 56, NWS Greenville-Spartanburg, SC

269 
WWUS52 KGSP 122237
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
637 PM EDT THU MAY 12 2016

NCC045-122246-
/O.CAN.KGSP.SV.W.0056.000000T0000Z-160512T2245Z/
CLEVELAND NC-
637 PM EDT THU MAY 12 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CLEVELAND COUNTY
IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3516 8115 3516 8133 3526 8132 3528 8136
      3530 8136 3531 8137 3533 8136 3535 8139
      3539 8143 3542 8135 3541 8134 3541 8121
TIME...MOT...LOC 2236Z 257DEG 23KT 3531 8127 

$$

NCC071-122245-
/O.CON.KGSP.SV.W.0056.000000T0000Z-160512T2245Z/
GASTON NC-
637 PM EDT THU MAY 12 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR WESTERN GASTON COUNTY...

AT 636 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES NORTHWEST OF
GASTONIA...OR NEAR BESSEMER CITY...MOVING EAST AT 25 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
CHERRYVILLE...BESSEMER CITY...SOUTH GASTONIA...CROWDERS MOUNTAIN STATE
PARK...CROWDERS...GASTONIA...HIGH SHOALS...DALLAS AND CROUSE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FEW TREES AND POWER LINES WILL BE BLOWN DOWN IN THE WARNED AREA.
HAIL CAN CAUSE MAJOR PROPERTY DAMAGE...ESPECIALLY TO VEHICLES. SEEK
SHELTER INSIDE AN INTERIOR ROOM.

PLEASE REPORT DAMAGING WINDS...HAIL...OR FLOODING TO THE NATIONAL
WEATHER SERVICE GREENVILLE-SPARTANBURG BY CALLING TOLL FREE...1...800...
2 6 7...8 1 0 1...OR BY POSTING ON OUR FACEBOOK PAGE...OR TWEET IT USING
HASHTAG NWSGSP. YOUR MESSAGE SHOULD DESCRIBE THE EVENT AND THE
SPECIFIC LOCATION WHERE IT OCCURRED.

&&

LAT...LON 3516 8115 3516 8133 3526 8132 3528 8136
      3530 8136 3531 8137 3533 8136 3535 8139
      3539 8143 3542 8135 3541 8134 3541 8121
TIME...MOT...LOC 2236Z 257DEG 23KT 3531 8127 

HAIL...1.00IN
WIND...60MPH
 
$$

08

Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
445 PM EDT THU MAY 12 2016

.SYNOPSIS...
A cold front will move into the southern Appalachians from the west
tonight and then move east across the piedmont of the Carolinas on
Friday. Drier air will spill into the region Friday afternoon into
Saturday. A reinforcing cold front arriving from the northwest
Saturday night will bring even cooler and drier high pressure to the
area Sunday into Monday. Moist southerly flow will return through
mid week along with steadily increasing shower and thunderstorm
chances.

&&

.NEAR TERM /THROUGH FRIDAY/...
As of 4:35 pm EDT Thursday: Scattered showers and thunderstorms
currently across the region, more numerous in the mountains, will
continue through this evening.  Activity has seen hail to 1 inch and
some severe wind gusts, with more such low-end severe reports likely
this evening.  Activity will transition from thunderstorms to
showers overnight as surface cooling reduces convective
instability.  Showers will end from northwest to southeast Friday
morning through afternoon as a major cold front passes through the
region.  Cold frontal passage will veer wind to northwesterly and
dry and cool the region, bringing temperatures back down to near
normal on Friday.

The cold front will slowly cross the foothills and piedmont portions
of the forecast area Friday morning. Upper jet divergence and one
final shot of upper level DPVA will also cross the forecast area
Friday morning and this upper support may catch up to the
pre-frontal instability along and east of I-77 by late morning. Will
bring back thunder chances across these areas through at least Noon
or perhaps into the early afternoon. West to northwest flow and
strong deep layer drying will develop behind the front through late
Friday. Breezy conditions are likely in the mountains post fropa
Friday as a narrow window of cold advection overlaps mixing.
However, winds should remain below advisory criteria. Max temps will
be a couple of categories cooler than today.

&&

.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/...
As of 200 PM Thursday...This upcoming weekend looks relatively quiet
and seasonably cool, as a long wave upper trough digs across the
eastern CONUS. A reinforcing cold front will approach the area from
the NW on Saturday, with dry WLY flow ahead of it. Other than a few
upslope showers near the TN border, expect dry wx for the region.
Temps will be near normal in the mtns and a category above in the
piedmont.

Significantly lower thicknesses will spill in from the NW for
Sunday, resulting in slightly below normal temps. Breezy to windy
conditions are expected in the mtns from Saturday afternoon into
Sunday within decent 850 mb CAA.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
As of 230 PM Thursday...the eastern CONUS upper trough will lift NE
on Monday, allowing upper ridging to begin across the Southeast. The
upper pattern remains somewhat flat thru much of next week, but with
general troughing over the west and ridging along the East Coast. At
the surface, high pressure will slide off the Mid-Atlantic coast on
Monday, while a low pressure system tries to organize over the
Southern Plains. The medium range guidance generally agrees on a
warm front, extending east of the low, activating across the Gulf
states, while a weak wedge lingers across the Carolinas. This should
set up a more unsettled wx pattern for the CWFA, with max temps
returning to near normal and min temps above normal by the middle of
next week.

&&

.AVIATION /21Z THURSDAY THROUGH TUESDAY/...
At KCLT, radar coverage remains fairly sparse around the airfield
but LAPS CAPE values of 1500 to 2000 J/kg indicate that the airmass
is primed for convection with any nearby triggering
boundaries/outflows. Will keep TEMPO TSRA timed mainly 19Z to 23Z at
this point but another round of convection could arrive later this
evening with activity developing from northern GA to eastern TN. A
third round of showers and thunderstorms may reach the Interstate 77
corridor late tonight but with a weakening trend given the more
limited nocturnal instability. Finally, upper level support may
catch up to the passing front by Noon on Friday to generate one last
round of scattered SHRA/TSRA with fropa. Anticipate mainly S to SW
winds for much of the period, but with winds toggling NW late in the
period with fropa.

Elsewhere, thunderstorms triggering along the Blue Ridge will keep
TEMPO TSRA going at KAVL for a few hours past issuance time.
Development should hold off until around 19Z at most of the foothill
sites and TEMPOs timed 19Z to 23Z appear about right for these
locations. Another round of convection may arrive from the west
through the evening hours with yet another round of weakening
SHRA/TSRA possible overnight just ahead of the approaching cold
front. MVFR conditions will be limited mainly to the heaviest
downpours and also possible at KAVL and KHKY early Friday with
better low level moisture. Expect a drying trend with a sharp
northwesterly wind shift Friday morning. Gusts of 20 to 25 kt are
likely at KAVL Friday morning with mixing and cold advection.

Outlook: A cold front will move east of the area Friday afternoon
with drying expected through Saturday. A reinforcing cold front will
cross the region Saturday night with cooler and drier conditions
expected Sunday through Monday. Southerly flow and moisture will get
slowly reestablished through the middle of next week. Diurnal
thunderstorms will become possible again - especially over the
mountains.

Confidence Table...

            20-02Z        02-08Z        08-14Z        14-18Z
KCLT       High 100%     High 100%     High 100%     High 100%
KGSP       High 100%     High 100%     High 100%     High 100%
KAVL       High 100%     High 100%     Med   71%     High 100%
KHKY       High 100%     High 100%     High  89%     High  90%
KGMU       High 100%     High 100%     High 100%     High 100%
KAND       High 100%     High 100%     High 100%     High 100%

The percentage reflects the number of guidance members agreeing
with the schedule TAF issuance flight rule category. Complete hourly
experimental aviation forecast consistency tables and ensemble forecasts
are available at the following link:

www.weather.gov/gsp/aviation

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.

&&

SYNOPSIS...HG
NEAR TERM...HG/WJM
SHORT TERM...ARK
LONG TERM...ARK
AVIATION...HG

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
319 PM EDT THU MAY 12 2016

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-131930-
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-
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-CHESTER-GREENWOOD-
319 PM EDT THU MAY 12 2016

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 SHOWERS AND THUNDERSTORMS WILL CONTINUE TO
DEVELOP ACROSS THE WESTERN CAROLINAS AND NORTHEAST GEORGIA THIS
AFTERNOON THROUGH THIS EVENING. THE MAIN THREATS FROM THESE
STORMS WILL BE CLOUD TO GROUND LIGHTNING...SMALL HAIL...AND GUSTY
WINDS. SOME OF THESE STORMS MAY PRODUCE LARGER HAIL AND STRONG
DOWNBURST WINDS.

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

..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..MONDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..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.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
436 PM EDT THU MAY 12 2016

NCZ082-122100-
UNION NC-
436 PM EDT THU MAY 12 2016

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTHEASTERN UNION
COUNTY UNTIL 500 PM EDT...

AT 436 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 13
MILES SOUTHEAST OF MONROE...OR NEAR STURDIVANTS...MOVING EAST AT 10
MPH.

LOCATIONS TO BE IMPACTED INCLUDE...
STURDIVANTS.

WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE IN THESE AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS CAN BLOW DOWN TREES THAT ARE DEAD...OR THAT HAVE WEAKENED
ROOT SYSTEMS. OUTDOOR FURNITURE AND SIMILAR ITEMS CAN BE TOSSED
AROUND IF NOT ANCHORED. SEEK SHELTER INDOORS.

&&

LAT...LON 3481 8032 3481 8040 3493 8041 3499 8030
TIME...MOT...LOC 2036Z 255DEG 10KT 3487 8034

08

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
446 PM EDT THU MAY 12 2016

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

0330 PM     TSTM WND DMG     2 NE SENECA             34.71N  82.93W
05/12/2016                   OCONEE             SC   LAW ENFORCEMENT

            TREE DOWN AT INTERSECTION OF ROCHESTER HWY AND W
            SIZEMORE RD.

&&

JMP

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
513 PM EDT THU MAY 12 2016

SCZ014-122145-
CHESTER SC-
513 PM EDT THU MAY 12 2016

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF CENTRAL CHESTER
COUNTY UNTIL 545 PM EDT...

AT 513 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 5
MILES SOUTHWEST OF CHESTER...OR NEAR CHESTER STATE PARK...MOVING EAST
AT 15 MPH.

LOCATIONS TO BE IMPACTED INCLUDE...
CHESTER...CHESTER STATE PARK AND LOWRYS.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE IN THESE
AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS CAN BLOW DOWN TREES THAT ARE DEAD...OR THAT HAVE WEAKENED
ROOT SYSTEMS. OUTDOOR FURNITURE AND SIMILAR ITEMS CAN BE TOSSED
AROUND IF NOT ANCHORED. SEEK SHELTER INDOORS.

&&

LAT...LON 3472 8138 3482 8119 3482 8110 3463 8103
      3461 8134
TIME...MOT...LOC 2113Z 250DEG 15KT 3468 8129

08

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
543 PM EDT THU MAY 12 2016

GAZ018-026-028-SCZ001-004-005-010-122230-
FRANKLIN GA-HART GA-STEPHENS GA-GREATER OCONEE SC-
OCONEE MOUNTAINS SC-GREATER PICKENS SC-ANDERSON SC-
543 PM EDT THU MAY 12 2016

...THUNDERSTORMS WITH TORRENTIAL RAINFALL WILL IMPACT PORTIONS OF
HART...EASTERN STEPHENS...FRANKLIN...SOUTHERN OCONEE...SOUTHWESTERN
PICKENS AND WESTERN ANDERSON COUNTIES UNTIL 630 PM EDT...

AT 543 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS WITH TORRENTIAL
RAINFALL ALONG A LINE EXTENDING FROM 9 MILES SOUTHWEST OF WALHALLA TO
NEAR CARNESVILLE...AND MOVING EAST AT 25 MPH.

LOCATIONS TO BE IMPACTED INCLUDE...
CLEMSON...SENECA...HARTWELL...WALHALLA...CARNESVILLE...CENTRAL...PENDLETON...
ROYSTON...WESTMINSTER AND REED CREEK.

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH AND VERY HEAVY RAINFALL RATES
UP TO 2 INCHES PER HOUR WILL BE POSSIBLE IN THESE AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS CAN BLOW DOWN TREES THAT ARE DEAD...OR THAT HAVE WEAKENED
ROOT SYSTEMS. OUTDOOR FURNITURE AND SIMILAR ITEMS CAN BE TOSSED
AROUND IF NOT ANCHORED. SEEK SHELTER INDOORS.

FREQUENT LIGHTNING IS OCCURRING WITH THESE STORMS. 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. DO NOT TAKE A SHOWER OR BATH. TRY TO UNPLUG
UNNECESSARY APPLIANCES BEFORE THE STORMS APPROACH.

LAKE HARTWELL IS IN THE PATH OF THESE STORMS. CLOUD TO GROUND
LIGHTNING AND GUSTY WINDS WILL CREATE DANGEROUS BOATING CONDITIONS.
MOVE TO SHORE IMMEDIATELY.

&&

LAT...LON 3431 8330 3475 8326 3484 8274 3429 8278
      3424 8293
TIME...MOT...LOC 2143Z 266DEG 21KT 3468 8319 3435 8322

08

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
547 PM EDT THU MAY 12 2016

NCZ037-122215-
DAVIE NC-
547 PM EDT THU MAY 12 2016

...A CLUSTER OF THUNDERSTORMS WITH VERY HEAVY RAINFALL WILL IMPACT
PORTIONS OF CENTRAL DAVIE COUNTY UNTIL 615 PM EDT...

AT 546 PM EDT...DOPPLER RADAR WAS TRACKING THUNDERSTORMS WITH VERY
HEAVY RAINFALL NORTHEAST OF MOCKSVILLE...OR SOUTHWEST OF BERMUDA
RUN...MOVING NORTHEAST AT 20 MPH.

LOCATIONS TO BE IMPACTED INCLUDE...
MOCKSVILLE...BERMUDA RUN...FORK CHURCH...ADVANCE AND FARMINGTON.

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH AND VERY HEAVY RAINFALL RATES
UP TO 2 INCHES PER HOUR WILL BE POSSIBLE IN THESE AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL 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 MAY ALSO RISE RAPIDLY. SEEK
HIGHER GROUND IF THREATENED BY FLOOD WATERS. DO NOT DRIVE ACROSS
FLOODED ROADS.

FREQUENT LIGHTNING IS OCCURRING WITH THESE STORMS. 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. DO NOT TAKE A SHOWER OR BATH. TRY TO UNPLUG
UNNECESSARY APPLIANCES BEFORE THE STORM APPROACHES.

&&

LAT...LON 3588 8042 3587 8039 3585 8039 3585 8042
      3583 8043 3583 8046 3584 8047 3583 8049
      3581 8047 3579 8048 3577 8045 3575 8046
      3605 8065 3604 8049 3606 8046 3601 8042
      3599 8042 3596 8038 3589 8037
TIME...MOT...LOC 2146Z 242DEG 17KT 3594 8047

08

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
559 PM EDT THU MAY 12 2016

SCZ009-122230-
YORK SC-
559 PM EDT THU MAY 12 2016

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTHEASTERN YORK
COUNTY UNTIL 630 PM EDT...

AT 559 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
ROCK HILL...MOVING NORTHEAST AT 20 MPH.

LOCATIONS TO BE IMPACTED INCLUDE...
ROCK HILL...FORT MILL...TEGA CAY...LESSLIE AND NEWPORT.

DIME SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE IN THESE
AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS CAN BLOW DOWN TREES THAT ARE DEAD...OR THAT HAVE WEAKENED
ROOT SYSTEMS. OUTDOOR FURNITURE AND SIMILAR ITEMS CAN BE TOSSED
AROUND IF NOT ANCHORED. SEEK SHELTER INDOORS.

DIME TO NICKEL SIZE HAIL CAN CAUSE CONSIDERABLE DAMAGE TO VEHICLES.
CONSIDER MOVING VEHICLES TO A COVERED STORAGE AREA BEFORE THE STORM
ARRIVES.

&&

LAT...LON 3491 8087 3484 8109 3495 8116 3510 8093
      3506 8090 3503 8090 3501 8091 3499 8089
      3497 8088 3496 8087 3492 8086
TIME...MOT...LOC 2159Z 239DEG 18KT 3493 8106

08