South Carolina, 2014

Hail and Damaging Wind in South Carolina, May 10, 2014

May 10, 2014 · NWS GSP · 8 events in 4 counties and zones

Numerous thunderstorms developed during the afternoon within an unstable air mass across the Upstate, mainly east of the I-385 corridor. A few of the storms produced marginally severe hail and downburst winds.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
8

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.

What happened

The episode as NWS GSP wrote it up.

Numerous thunderstorms developed during the afternoon within an unstable air mass across the Upstate, mainly east of the I-385 corridor. A few of the storms produced marginally severe hail and downburst winds.

What forecasters said that day

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 May 10, 9:39 AM EST, 3 hours 8 minutes earlier.

Area forecast discussion, May 10, 9:39 AM EST, 3 hours 8 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1039 AM EDT SAT MAY 10 2014

.SYNOPSIS...
A WEAK SURFACE BOUNDARY WILL APPROACH THE CAROLINAS FROM THE WEST
TODAY BUT MAY WASH OUT BEFORE IT REACHES THE MOUNTAINS. A BERMUDA
HIGH WILL STRENGTHEN AGAIN OVER THE SOUTHEAST ON SUNDAY AND THEN
WILL REMAIN IN CONTROL OF OUR WEATHER THROUGH THE MIDDLE OF NEXT
WEEK. ANOTHER FRONT WILL MOVE ACROSS THE REGION ON THURSDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
AS OF 1015 AM...POPS WERE ADJUSTED AGAIN TO MATCH UP WITH THE LATEST
RADAR IMAGERY. SCATTERED TO NUMEROUS SHOWERS HAVE POPPED UP ALONG
THE SC AND NC FOOTHILLS...WHILE AN AREA OF LIGHT RAIN HAS MOVED INTO
THE SW NC MTNS.

THE VIS SAT IMAGERY SHOWS EXTENSIVE CLOUDINESS ACRS ABOUT 2/3RD OF
THE CWFA...WITH JUST THE LOWER PIEDMONT FROM ELBERT COUNTY GA TO
UNION COUNTY NC SHOWING SIGNIFICANT BREAKS. THIS LOOKS LIKE A
SIMILAR SETUP TO YESTERDAY...WITH MORE INSTBY AND DCAPE ALONG AND
SOUTHEAST OF I-85 FROM MIDDAY THRU THE AFTN. THERE WILL ACTUALLY BE
A LITTLE BETTER UPPER FORCING...AS A MORE SIGNIFICANT VORT WAS
ANALYZED CROSSING NRN GA (AND IS PROBABLY RESPONSIBLE FOR THE EARLY
CONVECTIVE INITIATION THIS MORNING). THERE IS ALSO A LITTLE BETTER
SHEAR (THO STILL MARGINAL AND MORE UNIDIRECTIONAL THAN
YESTERDAY)...0-3 KM BULK SHEAR OF 35-40 KTS PER THE NAM. THE 12Z
RAOBS FROM FFC/GSO/OHX ALL SHOW AN ELEVATED MIXED LAYER FROM ABOUT
900-750 MB. SO EXPECT GOOD COVERAGE OF SHOWERS AGAIN TODAY WHERE THE
INSOLATION WILL BE GREATEST (EASTERN HALF OF THE CWFA). THE
CONVECTION-ALLOWING MODELS ALL SEEM TO HIGHLIGHT THIS (ALTHO SEEM A
BIT SLOW ON TIMING). A CONSENSUS BLENDED IN WITH THE PREVIOUS FCST
RESULTS IN A LIKELY POP ALONG THE I-85 CORRIDOR FROM MIDDAY THRU
LATE AFTN. A QUICK DECREASING TREND SHUD OCCUR BY EARLY EVENING...AS
SHORTWAVE EXITS TO THE EAST AN INSTBY WANES.

AS OF SEVERE THREAT...WE ARE IN A GENERAL THUNDER RISK PER THE DAY 1
SPC CONVECTIVE OUTLOOK. HOWEVER...WITH DCAPE VALUES ALREADY 800-
1000 J/KG ACRS THE LOWER PIEDMONT...AND A LITTLE BETTER
SHEAR...EXPECT A NON-ZERO THREAT FOR DAMAGING WIND GUSTS. THE
CURRENT  WORDING IN THE HWO LOOKS GOOD.

PREVIOUS DISCUSSION...
AT 300 AM EDT SATURDAY...THE LEADING EDGE OF A BROAD UPPER TROUGH
WILL MOVE OVER THE SOUTHERN APPALACHIANS TODAY...WITH A SHORTWAVE
CROSSING OUR AREA AROUND MIDDAY. A WEAKENING COLD FRONT WILL
APPROACH FROM THE NW...REACHING THE AREA BY LATE AFTERNOON OR EARLY
EVENING. DEEP MOISTURE AND LIFT AHEAD OF THE FRONT WILL SUPPORT
PRECIPITATION THROUGH THE DAY...BUT THE BEST CHANCE APPEAR TO BE
TOWARD MIDDAY AND INTO THE AFTERNOON WITH HEATING AND THE PASSAGE
OF THE SHORTWAVE. LOW LEVEL SHEAR APPEARS TO BE A LITTLE BETTER THAN
YESTERDAY...HOWEVER THE BEST INSTABILITY IS OFF TO OUR EAST.
NEVERTHELESS...A FEW SEVERE THUNDERSTORMS CANNOT BE RULED OUT...
ESPECIALLY IN THE EAST. PRECIPITATION IS NOT EXPECTED TO BE
EXCESSIVE...AS WINDS REMAIN PARALLEL TO THE BLUE RIDGE. HIGH
TEMPERATURES WILL RUN SLIGHTLY ABOVE NORMAL.

MODEL TIME HEIGHTS SHOW DRYING FROM ALOFT THIS EVENING AS THE
WEAKENING COLD FRONT MOVES THROUGH...BUT LOW LEVELS APPEAR TO
RETAIN STUBBORN MOISTURE...AND WITH WINDS WEAKENING...LOW CLOUDS MAY
HANG ON...WITH FOG DEVELOPING. LOW TEMPERATURES WILL BE AROUND 5
DEGREES ABOVE NORMAL DUE TO CLOUDS AND ONLY WEAK COLD ADVECTION.

&&

.SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/...
AS OF 215 AM EDT SATURDAY...THE MAIN FEATURE FOR THE SHORT RANGE
PART OF THE FORECAST WILL BE THE RESURGENCE OF AN UPPER RIDGE OVER
THE EASTERN PART OF THE UNITED STATES AS THE UPPER PATTERN AMPLIFIES
ACROSS NORTH AMERICA. THIS PATTERN WILL KEEP A BERMUDA HIGH IN PLACE
THROUGH MONDAY NIGHT THAT WILL KEEP TEMPS ABOVE NORMAL. THE MAIN
JUMP SHOULD OCCUR ON SUNDAY WITH HIGH TEMPS ABOUT 5 DEGREES OR SO
WARMER THAN SATURDAY. RH WILL ALSO INCREASE THROUGH THE PERIOD...
WHICH WILL FUEL PRECIP CHANCES THAT WILL BE CLIMATOLOGICAL AND
DIURNAL IN NATURE. THAT TRANSLATES TO A CHANCE OF PRECIP OVER THE
HIGHER TERRAIN...AND A SLIGHT CHANCE OVER THE PIEDMONT...MAINLY IN
THE AFTERNOON. FORECAST SOUNDINGS SHOW A GENERAL LACK OF BOUYANCY ON
SUNDAY AFTERNOON OWING TO A LAYER OF WARMER AIR AT LOW LEVELS WHICH
SHOULD LIMIT STORM SEVERITY...BUT THIS IMPROVES ENOUGH ON MONDAY TO
RAISE SOME INTEREST.

&&

.LONG TERM /TUESDAY THROUGH FRIDAY/...
AS OF 315 AM EDT SATURDAY...THE MAIN PROBLEM IN THE MEDIUM RANGE
CONTINUES TO BE TIMING DIFFERENCES IN THE MODEL GUIDANCE WITH REGARD
TO THE EASTWARD PROGRESSION OF A HIGH AMPLITUDE UPPER TROF DURING
THE MIDDLE TO LATE PART OF THE WEEK. THE LATEST GFS HAS SLOWED DOWN
THE SYSTEM TO WHERE IT RESEMBLES YESTERDAYS 00Z ECMWF...HOWEVER THE
NEW ECMWF IS ALSO SLOWER AND TRAILS THE GFS BY ABOUT A HALF DAY.
THUS...THE MODEL TREND OF SLOWING THE APPROACH OF THE UPPER TROF AND
ATTENDANT SURFACE FRONT MAY CONTINUE AGAIN TODAY. THUS...OUR PERIOD
OF MAINLY DIURNAL THUNDERSTORMS SHOULD PERSIST ON TUESDAY...WITH THE
PRECIP LOSING THE DIURNAL TENDENCY TO DIMINISH BY TUESDAY NIGHT...AS
THE BERMUDA HIGH CONTINUES TO BE OUR MAIN DRIVING FORCE. FOR THIS
UPDATE...HAVE ELECTED TO STRETCH OUT THE CHANCE OF PRECIP THROUGH
THE DAY THURSDAY OWING TO THE DELAYED TIMING OF FRONTAL PASSAGE
SUGGESTED BY THE ECMWF. SKY COVER WAS ALSO INCREASED DURING THIS
PERIOD ACCORDINGLY. IT STILL SEEMS THAT WE WILL HAVE A PERIOD OF
NUMEROUS STORMS AHEAD OF THE FRONT...BUT CONFIDENCE IS NOT HIGH
ENOUGH TO PIN DOWN WHICH FCST PERIOD THAT THE GREATEST THREAT WILL
EXIST...SO THE FCST KEEPS THE POP IN THE CHANCE RANGE IN SPITE OF
MOSGUIDE AND HPC GUIDANCE THAT HAS LIKELY POPS AT SOME POINT. TEMPS
SHOULD COOL OFF CLOSER TO NORMAL FOR THE END OF THE WEEK.

&&

.AVIATION /15Z SATURDAY THROUGH WEDNESDAY/...
AT KCLT...LOW CLOUD COVER HAS NOT ARRIVED AS EXPECTED AT KCLT...AND
THE LATEST GUIDANCE SUPPORTS HIGH LEVEL CIGS TODAY. THUNDERSTORMS IN
THE AFTERNOON COULD PRODUCE A LOW VFR CIG AND MVFR VSBY HOWEVER. THE
CURRENT DEW POINT DEPRESSION IS NOT QUITE SUPPORTIVE OF DAYBREAK
FOG. SW WINDS WILL BECOME GUSTY WITH HEATING AND MIXING TODAY...EVEN
WITH CLOUD COVER LIMITING WARMING. SW WINDS DIMINISH THIS EVENING.
AT THIS TIME GUIDANCE DOES NOT SUPPORT A VSBY RESTRICTION SUNDAY
MORNING. IF SUBSTANTIAL RAIN FALLS AT THE FIELD TODAY...FOG SHOULD
BE MORE LIKELY...GIVEN THE LIGHT SURFACE WIND.

ELSEWHERE...POCKETS OF FOG HAVE DEVELOPED THIS MORNING...BUT THE
ONLY TAF SITE AFFECTED SO FAR IS KAVL...WHERE LIFR CONDITIONS HAVE
SET UP. CONDITIONS SHOULD IMPROVE THERE BY MID MORNING AS SSW WINDS
COME UP AND BECOME GUSTY AT ALL SITES WITH HEATING AND MIXING...
DESPITE UPPER LEVEL CLOUD COVER. MOISTURE AND INSTABILITY AHEAD OF A
COLD FRONT WILL SUPPORT CONVECTION IN THE AFTERNOON...PERHAPS
EARLIER AT KAVL...WHICH COULD PRODUCE RESTRICTIONS. THUNDERSTORMS
SHOULD DIMINISH ALONG WITH THE WINDS THIS EVENING AS HEATING ABATES.
LIGHT WINDS WILL VEER WNW BEFORE DAWN SUNDAY...EXCEPT NW AT KAVL...
AS THE WEAKENING COLD FRONT MOVES THROUGH. GUIDANCE IS ONLY
SUPPORTIVE OF FOG AT KAVL SUNDAY MORNING. IF FOOTHILLS SITES RECEIVE
ENOUGH RAIN...FOG WOULD BE LIKELY THERE IN LIGHT WINDS.

OUTLOOK...HIGH PRESSURE RETURNS SUNDAY AND MONDAY...BUT AFTERNOON
AND EVENING CONVECTION WILL BE POSSIBLE BOTH DAYS. WEDNESDAY AND
THURSDAY FEATURE A SLOW MOVING COLD FRONT...YIELDING A BETTER CHANCE
OF RESTRICTIONS IN PROLONGED PRECIPITATION.

CONFIDENCE TABLE...

            14-20Z        20-02Z        02-08Z        08-14Z
KCLT       HIGH 100%     HIGH 100%     HIGH 100%     HIGH 100%
KGSP       HIGH 100%     HIGH 100%     HIGH 100%     HIGH 100%
KAVL       HIGH  99%     HIGH 100%     HIGH  95%     HIGH  90%
KHKY       HIGH 100%     HIGH 100%     HIGH 100%     HIGH 100%
KGMU       HIGH 100%     HIGH 100%     HIGH 100%     HIGH  95%
KAND       HIGH 100%     HIGH 100%     HIGH 100%     HIGH  90%

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...PM
NEAR TERM...ARK/JAT
SHORT TERM...PM
LONG TERM...PM
AVIATION...JAT
Hazardous weather outlook, May 10, 4:46 AM EST, 8 hours 1 minute before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
546 AM EDT SAT MAY 10 2014

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-111000-
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-
546 AM EDT SAT MAY 10 2014

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

.DAY ONE...TODAY AND TONIGHT.

SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS THE WESTERN CAROLINAS
AND NORTHEAST GEORGIA AGAIN TODAY...MAINLY THIS AFTERNOON. THE
STRONGER THUNDERSTORMS MAY OCCUR OVER THE PIEDMONT OF THE
CAROLINAS. ONE OR TWO OF THE STORMS MAY GROW LARGE ENOUGH TO
PRODUCE DAMAGING WIND GUSTS AND LARGE HAIL. OTHERWISE...THE MOST
LIKELY THREATS ARE FREQUENT CLOUD TO GROUND LIGHTNING AND HEAVY
DOWNPOURS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

..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.
..THURSDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

PM

In the hours before

Special weather statement, May 10, 10:38 AM EST, 2 hours 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1138 AM EDT SAT MAY 10 2014

NCZ065-508>510-SCZ003-006-007-101630-
EASTERN POLK-GREATER GREENVILLE-GREATER RUTHERFORD-GREENVILLE
MOUNTAINS-HENDERSON-POLK MOUNTAINS-SPARTANBURG-
1138 AM EDT SAT MAY 10 2014

...STRONG THUNDERSTORMS WILL AFFECT NORTHERN GREENVILLE...WESTERN
RUTHERFORD...POLK...NORTHWESTERN SPARTANBURG AND SOUTH CENTRAL
HENDERSON COUNTIES THROUGH 1230 PM EDT...

AT 1136 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM HIGHWAY 25 AT
HIGHWAY 11 TO TRAVELERS REST...MOVING NORTHEAST AT 40 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  LAKE ROBINSON...
  TRYON...
  COLUMBUS...
  LAKE ADGER...
  RUTHERFORDTON...

SMALL HAIL...AND WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THESE
STORMS.

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 THIS STORM. 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 STORM
APPROACHES.

LAT...LON 3549 8196 3518 8181 3519 8187 3515 8186
      3493 8246 3516 8255

JOH
Special weather statement, May 10, 11:31 AM EST, 1 hour 16 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1231 PM EDT SAT MAY 10 2014

NCZ053-065-505-101715-
BUNCOMBE-HENDERSON-MCDOWELL MOUNTAINS-
1231 PM EDT SAT MAY 10 2014

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN MCDOWELL...NORTHERN
HENDERSON AND SOUTHEASTERN BUNCOMBE COUNTIES THROUGH 115 PM EDT...

AT 1229 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR ARDEN...OR 10 MILES NORTHWEST OF
HENDERSONVILLE...MOVING NORTHEAST AT 40 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  BILTMORE FOREST...
  FAIRVIEW...
  SWANNANOA...
  BLACK MOUNTAIN...

WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM.

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 THIS STORM. 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 STORM
APPROACHES.

LAT...LON 3570 8226 3552 8216 3551 8223 3549 8223
      3547 8224 3546 8225 3547 8226 3545 8227
      3534 8255 3547 8266 3573 8230

JOH
Special weather statement, May 10, 12:06 PM EST, 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
106 PM EDT SAT MAY 10 2014

NCZ049-053-505-506-101745-
BUNCOMBE-EASTERN MCDOWELL-MCDOWELL MOUNTAINS-YANCEY-
106 PM EDT SAT MAY 10 2014

...A STRONG THUNDERSTORM WILL AFFECT WESTERN MCDOWELL...SOUTHEASTERN
YANCEY AND EAST CENTRAL BUNCOMBE COUNTIES THROUGH 145 PM EDT...

AT 106 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR BLACK MOUNTAIN...OR 15 MILES EAST OF
DOWNTOWN ASHEVILLE...MOVING NORTHEAST AT 20 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  OLD FORT...
  MARION...

SMALL HAIL...WIND GUSTS UP TO 40 MPH AND TORRENTIAL RAINFALL ARE
EXPECTED WITH THIS STORM.

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 THIS STORM. 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 STORM
APPROACHES.

LAT...LON 3555 8192 3554 8199 3555 8201 3553 8203
      3553 8209 3552 8214 3553 8217 3552 8222
      3549 8223 3548 8230 3550 8233 3549 8235
      3563 8242 3585 8209

JOH
Special weather statement, May 10, 12:18 PM EST, 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
118 PM EDT SAT MAY 10 2014

NCZ508-SCZ006>008-101800-
CHEROKEE-GREATER GREENVILLE-GREATER RUTHERFORD-SPARTANBURG-
118 PM EDT SAT MAY 10 2014

...STRONG THUNDERSTORMS WILL AFFECT CENTRAL GREENVILLE...SOUTHEASTERN
RUTHERFORD...NORTHERN SPARTANBURG AND NORTHWESTERN CHEROKEE COUNTIES
THROUGH 200 PM EDT...

AT 112 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM LAKE BOWEN TO
HAYWOOD MALL...MOVING NORTHEAST AT 30 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  LYMAN...
  REIDVILLE...
  CLIFFSIDE...
  COWPENS NATIONAL BATTLEFIELD...
  CEDAR SPRINGS...
  COWPENS...

SMALL HAIL...WIND GUSTS UP TO 40 MPH AND TORRENTIAL RAINFALL ARE
EXPECTED WITH THESE STORMS.

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 THIS STORM. 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 STORM
APPROACHES.

LAT...LON 3478 8246 3510 8220 3519 8200 3519 8198
      3520 8197 3532 8172 3520 8177 3518 8176
      3518 8173 3494 8177 3473 8246

JOH
Special weather statement, May 10, 12:43 PM EST, 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
143 PM EDT SAT MAY 10 2014

GAZ028-029-SCZ010-011-101830-
ABBEVILLE-ANDERSON-ELBERT-HART-
143 PM EDT SAT MAY 10 2014

...STRONG THUNDERSTORMS WILL AFFECT SOUTHWESTERN ANDERSON...WESTERN
ABBEVILLE...EASTERN HART AND ELBERT COUNTIES THROUGH 230 PM EDT...

AT 138 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 5 MILES SOUTH OF
BOWMAN TO ELBERTON...MOVING NORTHEAST AT 30 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  BOWMAN...
  RUCKERSVILLE...
  LAKE RUSSELL...
  HARTWELL...
  IVA...
  SECESSION LAKE...

SMALL HAIL...WIND GUSTS OF 40 TO 50 MPH AND TORRENTIAL RAINFALL ARE
EXPECTED WITH THESE STORMS.

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 THIS STORM. 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 STORM
APPROACHES.

LAT...LON 3413 8306 3416 8309 3457 8283 3435 8245
      3399 8285

JOH
Local storm report, May 10, 12:46 PM EST, 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
146 PM EDT SAT MAY 10 2014

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

0145 PM     HAIL             MAULDIN                 34.79N  82.30W
05/10/2014  E0.50 INCH       GREENVILLE         SC   PUBLIC

            PUBLIC REPORT OF PEA TO HALF INCH HAIL ALONG BUTLER
            ROAD.

&&

HG

The radar

The Greer radar (KGSP), 39 km away, was scanning. The volume nearest the first event began at 17:44 UTC.

Open the radar archive at this moment

Event by event

7 hail, 1 thunderstorm wind. Local standard time, as filed.

Hail, Spartanburg

When
May 10, 12:47 PM EST
Where
Spartanburg County, 4 mi S of Chesnee
Measured
0.88 in hail
Reported by
Public
Coordinates
35.092, -81.870

Public reported nickel size hail near Mayo.

Hail, Spartanburg

When
May 10, 12:47 PM EST to 12:50 PM EST
Where
Spartanburg County, 3 mi S of Chesnee
Measured
1 in hail
Reported by
Public
Coordinates
35.107, -81.870

Public reported pea to quarter size hail that fell for a couple of minutes near Chesnee.

Hail, Spartanburg

When
May 10, 12:47 PM EST
Where
Spartanburg County, 2 mi S of Chesnee
Measured
0.75 in hail
Reported by
Fire Department/Rescue
Coordinates
35.121, -81.870

FD reported 3/4 inch hail.

Hail, Greenville

When
May 10, 1:07 PM EST
Where
Greenville County, 3.5 mi WSW of Simpsonville
Measured
1 in hail
Reported by
Public
Coordinates
34.711, -82.307

Public reported quarter size hail on West Georgia Rd near Greenville Technical College.

Hail, Greenville

When
May 10, 1:08 PM EST to 1:14 PM EST
Where
Greenville County, 3.5 mi SW of Simpsonville to 1 mi S of Simpsonville
Measured
0.75 in hail
Reported by
Public
Coordinates
34.694, -82.294

Public and spotter reported 3/4 inch hail on Rocky Creek Rd and on on South Main St.

Hail, Chester

When
May 10, 2:07 PM EST
Where
Chester County, 4 mi NE of Chester
Measured
0.88 in hail
Reported by
Public
Coordinates
34.741, -81.150

Public reported nickel size hail.

Thunderstorm Wind, York

When
May 10, 2:33 PM EST
Where
York County, Rock Hill
Measured
50 kt (58 mph) estimated gust
Reported by
County Official
Coordinates
34.920, -81.030

County comms reported several power lines blown down in the Rock Hill area.

Hail, York

When
May 10, 2:48 PM EST
Where
York County, 4 mi SSE of Clover
Measured
0.75 in hail
Reported by
911 Call Center
Coordinates
35.047, -81.203

County comms reported 3/4 inch hail near Clover.

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in South Carolina in 2014Every state in 2014This day in weather historyWarnings in South Carolina, May 2014

Sources

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: 506828, 506829, 506830, 506804, 506805, 506831, 506832, 506806.