An area of thunderstorms developing ahead of a cold front moved across the southern Piedmont of North Carolina during the morning, producing gusty winds that caused isolated wind damage. After a lull of a few hours, more numerous storms developed during the heat of the afternoon, producing more widespread severe weather in the form of large hail.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS GSP wrote it up.
An area of thunderstorms developing ahead of a cold front moved across the southern Piedmont of North Carolina during the morning, producing gusty winds that caused isolated wind damage. After a lull of a few hours, more numerous storms developed during the heat of the afternoon, producing more widespread severe weather in the form of large hail.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before the first event at Apr 20, 5:55 AM EST, 2 hours 37 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
655 AM EDT MON APR 20 2015
.SYNOPSIS...
A COLD FRONT WILL CROSS THE AREA TODAY BRINGING ANOTHER ROUND OF
SHOWERS AND THUNDERSTORMS. DRY HIGH PRESSURE BUILDS IN FOR TUESDAY
AND WEDNESDAY. ANOTHER COLD FRONT WILL PUSH IN FROM THE NORTHWEST ON
THURSDAY...POSSIBLY BRINGING SHOWERS BACK TO THE AREA. A STRONGER
STORM SYSTEM WILL MOVE IN FOR THE WEEKEND.
&&
.NEAR TERM /THROUGH TONIGHT/...
AS OF 645 AM...WELL THE NEAR TERM MODELS AND CAMS ARE NOT DOING VERY
WELL WITH THE CONVECTION ENTERING OUR WESTERN ZONES EARLY THIS
MORNING. HAVE BUMPED UP POP IN THE WEST. STILL EXPECT WEAKENING AS
THE REMNANT PRECIP CROSSES THE AREA THRU THE MORNING HOURS. CANNOT
RULE OUT A STRONG OR MARGINALLY SEVERE STORM EARLY ON...BUT
OTHERWISE JUST SOME CG LIGHTNING AND DOWNPOURS WITH THAT ACTIVITY.
THE REST OF THE FCST WAS LEFT UNCHANGED.
AS OF 330 AM...IN THE IMMEDIATE NEAR TERM...THE RADAR HAS GONE INTO
CLEAR AIR MODE...AS A LEAD SHORTWAVE HAS EXITED TO THE NE WITHIN
DEEP LAYER SWLY FLOW. A QUASI-LINEAR MCS IS CURRENTLY CROSSING
CENTRAL TN AND NRN AL. GUIDANCE SEEMS TO BE UNDERESTIMATING THE
STRENGTH/PERSISTENCE OF THIS SYSTEM. THE LATEST RAP ANALYSIS SHOWS
500-1000 J/KG OF MUCAPE WITH 35-45 KTS OF EFFECTIVE SHEAR DOWNSTREAM
OF THIS CLUSTER. THIS RESULTS IN A /MCS MAINTENANCE/ PROB AT 70-80
PCT. SO IT IS NOW EXPECTED THAT THESE STORMS (WHILE STILL ON A
GRADUAL WEAKENING TREND) WILL LIKELY STILL SURVIVE INTO THE NC MTNS
EARLY THIS MORNING. GIVEN THE CURRENT STATE...CANNOT RULE OUT A
STRONG OR SEVERE STORM OR TWO...ESP IN GRAHAM/SWAIN...WHEN THE LINE
GETS INTO THE CWFA. FROM THERE...IT/S DIFFICULT TO SAY HOW MUCH
PRECIP WILL LINGER ACRS THE CWFA THIS MORNING. I HAVE BUMPED UP POP
IN THE WRN MTNS...BUT KEEP JUST A SHOTGUN CHC POP FOR THE REST OF
THE AREA THIS MORNING.
LATER TODAY...GUIDANCE IN GOOD AGREEMENT ON ANOTHER SPOKE OF
VORTICITY ROTATING AROUND THE BROAD CYCLONICALLY CURVED
FLOW...CROSSING THE CWFA FROM THE SOUTHWEST DURING THE PEAK-HEATING
AFTN HOURS. MEANWHILE...A COLD FRONT WILL PUSH INTO THE AREA THIS
AFTN. THE FRONT LOOKS TO ONLY HAVE MODEST LLVL CONVERGENCE.
HOWEVER...GIVEN THE STEEP MID LVL LAPSE RATES AND LINGERING BL
MOISTURE (DEWPTS IN THE MID 60S ACRS THE PIEDMONT). FAIRLY CONFIDENT
IN AT LEAST 40-50 PCT COVERAGE OF CONVECTION...MAYBE HIGHER TO THE
EAST. THE FCST SNDGS SHOW LONG BUT SLIGHTLY CURVED HODOGRAPHS WITH
1500-2500 J/KG OF UNCAPPED SBCAPE. SO EXPECT SOMEWHAT DISCRETE
STORMS INITIALLY...WITH POTENTIAL FOR SUPERCELLS. DEFINITELY WILL
BE A DAMAGING WIND AND HAIL THREAT...WITH AN ISOLD TORNADO THREAT
ACRS THE PIEDMONT THIS AFTN. THE HIGH RES MODELS DO NOT SEEM THAT
IMPRESSED WITH COVERAGE OR INTENSITY. I/M NOT SURE WHAT IS LIMITING
THEIR CONVECTION EXPECT FOR PERHAPS LACK OF DEEPER MOISTURE. THE NEW
DAY 1 CONVECTIVE OUTLOOK STILL HAS ALL AREAS EAST OF THE MTNS IN THE
SLGT RISK...AND A MARGINAL RISK FOR THE MTNS. OTHERWISE...IT WILL BE
BREEZY TODAY UNDER MOSTLY CLOUDY TO PARTLY CLOUDY SKIES WITH TEMPS
BACK ABOVE NORMAL AHEAD OF THE FRONT.
TONIGHT...DRY AIR WILL FILTER IN FROM THE WEST BEHIND THE FRONT.
POPS WILL TAPER OFF...LINGERING THRU THE EVENING ALONG THE TN BORDER
DUE TO UPSLOPE NWLY FLOW. LOWS WILL BE A COUPLE CATEGORIES ABOVE
NORMAL.
&&
.SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/...
AS OF 240 AM MONDAY...THINGS DRY OUT TUE AS DRY HIGH PRESSURE BUILDS
IN FROM THE WEST. EXPECT A MILD AND BREEZY DAY WITH HIGHS UP TO 5
DEGREES BELOW NORMAL. A BROAD AND LOW AMPLITUDE UPPER TROF SETS UP
ACROSS THE AREA FOR WED. WEAK SHORT WAVES MOVING THRU THE TROF WILL
HELP PUSH A WEAK COLD FRONT INTO THE AREA WED AND SOUTH OF THE AREA
WED NITE. THERE IS NOT A LOT OF DEEP MOISTURE WITH THIS SYSTEM AND
THE FORCING IS WEAK. THEREFORE...EXPECT SCT SHRA NEAR THE TN BORDER
WHERE THE MOISTURE IS DEEPEST AND WLY FLOW WILL HELP INCREASE
FORCING. ELSEWHERE...ONLY ISOLATED SHRA ARE EXPECTED...WITH LITTLE
CHC OF PRECIP SOUTH OF I-85. HIGHS WILL RISE TO NEAR NORMAL WED...
WITH LOWS NEAR NORMAL TUE NITE AND ABOVE NORMAL WED NITE.
&&
.LONG TERM /THURSDAY THROUGH SUNDAY/...
AS OF 350 AM MONDAY...AN UPPER TROF AXIS WILL SLIDE EAST OF THE AREA
THURSDAY ALLOWING FLAT RIDGING TO BUILD IN ON FRI. A SHORT WAVE
CROSSES THE AREA SATURDAY WITH ANOTHER BROAD AND LOW AMPLITUDE UPPER
TROF DEVELOPING ON SUNDAY.
HIGH PRESSURE BRIEFLY RETURNS TO THE AREA FRI BEFORE A STRONGER
STORM SYSTEM MOVES IN ON SATURDAY. PRECIP CHC SLOWLY RAMPS UP FRIDAY
WITH POTENTIALLY HEAVY PRECIP ON SATURDAY. DRY HIGH PRESSURE RETURNS
FOR SUNDAY. NEAR NORMAL HIGHS THURSDAY...FALL BELOW NORMAL FOR THE
REST OF THE PERIOD. LOWS BOUNCE AROUND FROM NEAR TO A LITTLE ABOVE
NORMAL.
&&
.AVIATION /12Z MONDAY THROUGH FRIDAY/...
AT KCLT AND ELSEWHERE...PLENTY OF IFR TO MVFR LVL STRATUS ACRS THE
PIEDMONT THIS MORNING...SHUD LIFT AND SCATTER OUT TO A VFR LVL
CUMULUS DECK BY 14-16Z TIME FRAME. A BAND OF WEAKENING SHRA AND TSRA
ARE ENTERING WRN NC AT THE TIME OF THE TAF ISSUANCE. THE 06Z NAM
SEEMS TO HAVE THE BEST HANDLE ON THIS CONVECTION...CARRYING AN AREA
OF -RA ACRS THE NC MTNS AND FOOTHILLS...CLIPPING THE UPSTATE SITES
THIS MORNING. WILL MENTION SHRA AT KAVL AND VCTS AT KAND. NOT ENUF
CONFIDENCE ON ANY IMPACT AT GMU/GSP/HKY TO MENTION. BY MIDDAY...SW
WINDS WILL BECOME GUSTY ACRS THE ENTIRE AREA. A COLD FRONT WILL BE
PUSHING IN FROM THE WEST THIS AFTN...WITH GENERALLY ISOLD TO WIDELY
SCATTERED TSRA EXPECTED TO DEVELOP JUST OUT AHEAD OF THE FRONT ACRS
THE PIEDMONT. WILL CONTINUE TO MENTION PROB30 STARTING AT 21Z. WINDS
WILL SHIFT TO WNW EAST OF THE MTNS...AND NW AT KAVL BEHIND THE FRONT
THIS EVENING...GRADUALLY DIMINISHING OVERNIGHT.
OUTLOOK...DRY HIGH PRESSURE WILL BUILD IN ACROSS THE REGION FOR THE
MIDDLE OF THE WEEK...LEADING TO LOW PRECIP/RESTRICTION CHANCES.
CONFIDENCE TABLE...
11-17Z 17-23Z 23-05Z 05-06Z
KCLT MED 78% MED 69% HIGH 100% HIGH 100%
KGSP HIGH 85% MED 69% LOW 57% HIGH 100%
KAVL HIGH 93% HIGH 100% HIGH 100% HIGH 100%
KHKY HIGH 100% HIGH 87% HIGH 100% HIGH 100%
KGMU HIGH 85% MED 69% HIGH 100% HIGH 100%
KAND HIGH 85% MED 75% HIGH 100% HIGH 100%
THE PERCENTAGE REFLECTS THE NUMBER OF GUIDANCE MEMBERS AGREEING
WITH THE SCHEDULED TAF ISSUANCE FLIGHT RULE CATEGORY. COMPLETE HOURLY
EXPERIMENTAL AVIATION FORECAST CONSISTENCY TABLES AND ENSEMBLE FORECASTS
ARE AVAILABLE AT THE FOLLOWING LINK: (MUST BE LOWER CASE)
WWW.WEATHER.GOV/GSP/AVIATION_TABLES
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...NONE.
SC...NONE.
&&
SYNOPSIS...RWH
NEAR TERM...ARK
SHORT TERM...RWH
LONG TERM...RWH
AVIATION...ARKHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 455 AM EDT MON APR 20 2015 GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065- 068>072-082-501>510-SCZ001>014-019-210900- 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- 455 AM EDT MON APR 20 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. A COLD FRONT WILL CROSS THE AREA TODAY BRINGING ANOTHER ROUND OF SCATTERED THUNDERSTORMS. SOME OF THESE STORMS MAY BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL. IN ADDITION...ISOLATED TORNADOES WILL BE POSSIBLE...MAINLY ACROSS THE PIEDMONT OF THE CAROLINAS AND NORTHEAST GEORGIA. WATER LEVELS WILL REMAIN HIGH IN AREA RIVERS AND STREAMS. ALTHOUGH THE STORMS WILL BE FAST MOVING...HEAVY RAINFALL IS POSSIBLE AND ISOLATED FLOODING MAY AGAIN DEVELOP. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. ..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..THURSDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..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. .SPOTTER INFORMATION STATEMENT... NONE.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
709 AM EDT MON APR 20 2015
GAZ010-017-018-026-NCZ062>064-SCZ001-002-004-201200-
FRANKLIN GA-STEPHENS GA-RABUN GA-HABERSHAM GA-SOUTHERN JACKSON NC-
TRANSYLVANIA NC-MACON NC-PICKENS MOUNTAINS SC-GREATER OCONEE SC-
OCONEE MOUNTAINS SC-
709 AM EDT MON APR 20 2015
...A LINE OF STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF WESTERN
FRANKLIN...STEPHENS...RABUN...HABERSHAM...SOUTH CENTRAL SOUTHERN
JACKSON...SOUTHWESTERN TRANSYLVANIA...SOUTHEASTERN MACON...
NORTHWESTERN PICKENS MOUNTAINS...NORTHWESTERN GREATER OCONEE AND
OCONEE MOUNTAINS UNTIL 800 AM EDT...
AT 708 AM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES SOUTH OF SKY VALLEY
TO CLARKESVILLE TO 4 MILES EAST OF GAINESVILLE...AND MOVING EAST AT
35 MPH.
PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE WITH THESE
STORMS.
LOCATIONS IMPACTED INCLUDE...
TOCCOA...WALHALLA...CLAYTON...CLARKESVILLE...CORNELIA...BALDWIN...
WESTMINSTER...DEMOREST...MOUNT AIRY AND ALTO.
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. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE
STORMS APPROACH.
&&
LAT...LON 3454 8362 3462 8364 3465 8366 3473 8362
3476 8363 3477 8365 3495 8355 3499 8353
3511 8272 3507 8277 3506 8276 3426 8334
3433 8339 3443 8338 3446 8340 3449 8354
3443 8362 3450 8367
TIME...MOT...LOC 1108Z 260DEG 31KT 3492 8331 3463 8352 3429 8376
RWHSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
756 AM EDT MON APR 20 2015
GAZ018-026-028-029-NCZ064-065-509-SCZ001>007-010-011-201245-
FRANKLIN GA-HART GA-STEPHENS GA-ELBERT GA-TRANSYLVANIA NC-
POLK MOUNTAINS NC-HENDERSON NC-ABBEVILLE SC-ANDERSON SC-
GREATER PICKENS SC-PICKENS MOUNTAINS SC-GREATER OCONEE SC-
OCONEE MOUNTAINS SC-GREATER GREENVILLE SC-SPARTANBURG SC-
GREENVILLE MOUNTAINS SC-
756 AM EDT MON APR 20 2015
...A LINE OF STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF FRANKLIN...
HART...SOUTHEASTERN STEPHENS...ELBERT...SOUTHEASTERN TRANSYLVANIA...
SOUTHWESTERN POLK MOUNTAINS...SOUTH CENTRAL HENDERSON...WESTERN
ABBEVILLE...ANDERSON...GREATER PICKENS...PICKENS MOUNTAINS...GREATER
OCONEE...SOUTHEASTERN OCONEE MOUNTAINS...GREATER GREENVILLE...
NORTHWESTERN SPARTANBURG AND GREENVILLE MOUNTAINS UNTIL 845 AM EDT...
AT 752 AM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS EXTENDING FROM ROUGHLY 4 MILES SOUTH OF ROSMAN TO
APPROXIMATELY 7 MILES EAST OF HOMER...AND MOVING EAST AT 45 MPH.
HEAVY RAIN...CLOUD TO GROUND LIGHTNING...AND WIND GUSTS UP TO 40
MPH WILL BE LIKELY WITH THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
GREENVILLE DOWNTOWN...ANDERSON...MAULDIN...TAYLORS...EASLEY...
CLEMSON...SENECA...ELBERTON...HARTWELL AND PICKENS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE COMBINATION OF GUSTY WINDS AND SATURATED SOIL CONDITIONS MAY
CAUSE SCATTERED TREES AND POWER LINES TO FALL. SEEK SHELTER INSIDE AN
INTERIOR ROOM IF POSSIBLE.
&&
LAT...LON 3410 8303 3417 8310 3423 8308 3427 8312
3424 8317 3426 8330 3423 8336 3426 8334
3432 8339 3516 8277 3522 8228 3520 8224
3517 8186 3512 8184 3476 8212 3478 8215
3462 8222 3405 8265
TIME...MOT...LOC 1151Z 277DEG 43KT 3508 8280 3431 8338
JPTSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
801 AM EDT MON APR 20 2015
GAZ018-026-028-029-NCZ064-065-509-SCZ001>007-010-011-201245-
FRANKLIN GA-HART GA-STEPHENS GA-ELBERT GA-TRANSYLVANIA NC-
POLK MOUNTAINS NC-HENDERSON NC-ABBEVILLE SC-ANDERSON SC-
GREATER PICKENS SC-PICKENS MOUNTAINS SC-GREATER OCONEE SC-
OCONEE MOUNTAINS SC-GREATER GREENVILLE SC-SPARTANBURG SC-
GREENVILLE MOUNTAINS SC-
801 AM EDT MON APR 20 2015
...A LINE OF STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF FRANKLIN...
HART...SOUTHEASTERN STEPHENS...ELBERT...SOUTHEASTERN TRANSYLVANIA...
SOUTHWESTERN POLK MOUNTAINS...SOUTH CENTRAL HENDERSON...WESTERN
ABBEVILLE...ANDERSON...GREATER PICKENS...PICKENS MOUNTAINS...GREATER
OCONEE...SOUTHEASTERN OCONEE MOUNTAINS...GREATER GREENVILLE...
NORTHWESTERN SPARTANBURG AND GREENVILLE MOUNTAINS UNTIL 845 AM EDT...
AT 752 AM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS EXTENDING FROM ROUGHLY 4 MILES SOUTH OF ROSMAN TO
APPROXIMATELY 7 MILES EAST OF HOMER...AND MOVING EAST AT 45 MPH.
HEAVY RAIN...CLOUD TO GROUND LIGHTNING...AND WIND GUSTS UP TO 40
MPH WILL BE LIKELY WITH THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
GREENVILLE DOWNTOWN...ANDERSON...MAULDIN...TAYLORS...EASLEY...
CLEMSON...SENECA...ELBERTON...HARTWELL AND PICKENS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE COMBINATION OF GUSTY WINDS AND SATURATED SOIL CONDITIONS MAY
CAUSE SCATTERED TREES AND POWER LINES TO FALL. SEEK SHELTER INSIDE AN
INTERIOR ROOM IF POSSIBLE.
&&
LAT...LON 3410 8303 3417 8310 3423 8308 3427 8312
3424 8317 3426 8330 3423 8336 3426 8334
3432 8339 3516 8277 3522 8228 3520 8224
3517 8186 3512 8184 3476 8212 3478 8215
3462 8222 3405 8265
TIME...MOT...LOC 1151Z 277DEG 43KT 3508 8280 3431 8338
JPTSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 818 AM EDT MON APR 20 2015 NCZ065-068-508>510-SCZ002>008-010>012-201300- EASTERN POLK NC-CLEVELAND NC-GREATER RUTHERFORD NC-POLK MOUNTAINS NC- HENDERSON NC-LAURENS SC-GREATER PICKENS SC-PICKENS MOUNTAINS SC- GREATER OCONEE SC-GREATER GREENVILLE SC-SPARTANBURG SC-CHEROKEE SC- GREENVILLE MOUNTAINS SC-ABBEVILLE SC-ANDERSON SC- 818 AM EDT MON APR 20 2015 ...A LINE OF STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF SOUTHERN EASTERN POLK...SOUTHWESTERN CLEVELAND...SOUTH CENTRAL GREATER RUTHERFORD...SOUTHWESTERN POLK MOUNTAINS...SOUTHEASTERN HENDERSON... NORTHWESTERN LAURENS...GREATER PICKENS...NORTHEASTERN PICKENS MOUNTAINS...SOUTHEASTERN GREATER OCONEE...GREATER GREENVILLE... SPARTANBURG...NORTHWESTERN CHEROKEE...GREENVILLE MOUNTAINS... NORTHEASTERN ABBEVILLE AND ANDERSON UNTIL 900 AM EDT... AT 816 AM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG THUNDERSTORMS EXTENDING FROM APPROXIMATELY 6 MILES NORTHEAST OF PLEASANT RIDGE STATE PARK TO 5 MILES SOUTHWEST OF PENDLETON...AND MOVING EAST AT 45 MPH. HEAVY DOWNPOURS...CLOUD TO GROUND LIGHTNING...AND WIND GUSTS UP TO 40 MPH WILL BE LIKELY WITH THESE STORMS. LOCATIONS IMPACTED INCLUDE... GREENVILLE DOWNTOWN...SPARTANBURG...ANDERSON...MAULDIN...TAYLORS... EASLEY...CLEMSON...LAURENS...PICKENS AND COLUMBUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE COMBINATION OF GUSTY WINDS AND SATURATED SOIL CONDITIONS MAY CAUSE SCATTERED TREES AND POWER LINES TO FALL. SEEK SHELTER INSIDE AN INTERIOR ROOM. && LAT...LON 3450 8298 3526 8250 3522 8158 3437 8208 TIME...MOT...LOC 1216Z 274DEG 40KT 3517 8243 3458 8282 JPT
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
837 AM EDT MON APR 20 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM TSTM WND DMG SENECA 34.69N 82.96W
04/20/2015 OCONEE SC EMERGENCY MNGR
TREES AND POWER LINES REPORTED DOWN IN THE 2011 FOREST
DRIVE AREA.
&&
LGABRICSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
905 AM EDT MON APR 20 2015
NCZ068>070-508-510-SCZ006>009-012>014-201400-
EASTERN POLK NC-CLEVELAND NC-GREATER RUTHERFORD NC-GASTON NC-
LINCOLN NC-LAURENS SC-CHESTER SC-YORK SC-GREATER GREENVILLE SC-
SPARTANBURG SC-CHEROKEE SC-UNION SC-
905 AM EDT MON APR 20 2015
...A CLUSTER OF THUNDERSTORMS WILL IMPACT PORTIONS OF SOUTHEASTERN
EASTERN POLK...CLEVELAND...GREATER RUTHERFORD...GASTON...LINCOLN...
NORTH CENTRAL LAURENS...WESTERN CHESTER...YORK...NORTHEASTERN GREATER
GREENVILLE...SPARTANBURG...CHEROKEE AND UNION UNTIL 1000 AM EDT...
AT 902 AM EDT...DOPPLER RADAR WAS TRACKING A CLUSTER OF
THUNDERSTORMS FROM RUTHERFORD COUNTY NORTH CAROLINA SOUTHWEST INTO
GREENVILLE COUNTY MOVING NORTHEAST AT 45 MPH.
BRIEF DOWNPOURS AND WIND GUSTS UP TO 45 MPH WILL BE POSSIBLE WITH
THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
GASTONIA...SPARTANBURG...SHELBY...MAULDIN...TAYLORS...GAFFNEY...
LINCOLNTON...UNION...YORK AND FOREST CITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE COMBINATION OF GUSTY WINDS AND SATURATED SOIL CONDITIONS WILL
CAUSE SCATTERED TREES AND POWER LINES TO FALL. SEEK SHELTER INSIDE AN
INTERIOR ROOM DURING THREATENING WEATHER.
&&
LAT...LON 3473 8244 3554 8189 3554 8185 3557 8183
3558 8180 3560 8179 3560 8177 3559 8171
3558 8170 3558 8169 3556 8166 3557 8160
3556 8157 3557 8155 3548 8097 3459 8124
TIME...MOT...LOC 1302Z 240DEG 49KT 3516 8178
LGThe Greer radar (KGSP), 96 km away, was scanning. The volume nearest the first event began at 13:32 UTC.
15 hail, 1 thunderstorm wind, 1 flood. Local standard time, as filed.
Media reported a tree blown down on a mobile home on Hanks Circle.
Public reported hail larger than half dollars near Earl.
Spotter reported 3/4 inch hail at Williamsburg Ct and Somerset Dr.
Spotter reported golf ball size hail in the Kings Mountain area.
Spotter reported 3/4 inch hail near Shelby.
Spotters reported hail to the size of golf balls in the Gastonia and Dallas areas.
Spotter reported quarter size hail near Stanley.
Multiple spotters and the public reported quarter to golf ball size hail in the Huntersville area, mainly across the west and north side of town.
Spotter reported quarter size hail near Alexandriana Park.
Multiple spotters and public reports of dime to quarter size hail were received between Kannapolis and Concord. Public reported quarter size hail 8 6 NNW Mount Pleasant.
Spotter reported a second round of 3/4 inch hail with another thunderstorm that passed over the area around Somerset Dr and Williamsburg Ct.
The public and a spotter reported quarter to half dollar size hail in the Belmont area.
Media reported quarter size hail on Performance Rd. Spotter reported quarter size hail at I-485 near I-85. Another spotter reported quarter size hail between Oakdale Dr and Thompson Ave.
Spotter reported nickel size hail at West Sugar Creek Rd and Harris Blvd.
Spotter and the public reported quarter size hail near Harrisburg.
FD reported nickel size hail.
An automated stream gauge on the South Fork Catawba River near Lowell briefly reached established flood stage after widespread rainfall amounts of 2-3 inches fell in the basin during the 20th and 21st. Portions of Riverside Park and Goat Island Park were flooded in the Cramerton and McAdenville areas.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Carolina in 2015Every state in 2015This day in weather historyWarnings in North Carolina, April 2015
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 573646, 573625, 573626, 573628, 573630, 573632, 573634, 573636, 573637, 573638, 573639, 573640, 573641, 573642, 573645, 573643, 574785.