Alert archive / South Carolina / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 57, NWS Greenville-Spartanburg, SC

May 12, 2016Abbeville County, Anderson County, Greenville County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 12, 2016, 6:31 PM EDT for Abbeville County, Anderson County, Greenville County, South Carolina. It was in force for 44 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 12, 2016, 6:31 PM EDT (22:31 UTC)
Expired
May 12, 2016, 7:15 PM EDT
In force
44 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Abbeville County, SC, Anderson County, SC, Greenville County, SC

The radar

The Greer radar (KGSP), 48 km from the middle of the area, began a volume at 22:31 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
May 12, 6:38 PM EDTTSTM WND DMGAnderson, SCNUMEROUS TREES AND POWERLINES DOWN. A FEW TREES FELL ON HOUSES. TREES DOWN FROM PIEDMONT TO SOUTHEAST OF ANDERSON. NO KNOWN INJURIES.
May 12, 6:40 PM EDTHAIL 0.754 Ssw Belton, SC
May 12, 7:00 PM EDTTSTM WND DMG7 Ene Belton, SCLARGE TREE FELL...BLOCKING BOTH LANES OF DOBBINS RIDGE DR. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 7 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.5 hours before the alert went out and 232 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2016-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 199 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2016-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
199 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1377 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
-9 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

202 
WUUS52 KGSP 122231
SVRGSP
SCC001-007-045-122315-
/O.NEW.KGSP.SV.W.0057.160512T2231Z-160512T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
631 PM EDT THU MAY 12 2016

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN GREENVILLE COUNTY IN UPSTATE SOUTH CAROLINA...
  NORTHEASTERN ABBEVILLE COUNTY IN UPSTATE SOUTH CAROLINA...
  SOUTHEASTERN ANDERSON COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 715 PM EDT

* AT 631 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 5 MILES NORTH OF ANDERSON TO 16 MILES EAST OF
  HARTWELL...MOVING EAST AT 35 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  ANDERSON...HOMELAND PARK...BELTON...WILLIAMSTON...NORTHLAKE...HONEA
  PATH...DUE WEST...DONALDS...STARR AND PRINCETON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SCATTERED TREES AND POWER LINES WILL BE BLOWN DOWN IN THE WARNED
AREA. SEEK SHELTER INSIDE AN INTERIOR ROOM.

THESE STORMS ARE PRODUCING FREQUENT AND INTENSE LIGHTNING. TURN OFF
ELECTRICAL APPLIANCES. DO NOT USE CORDED TELEPHONES. DO NOT TAKE A
BATH OR SHOWER.

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 3436 8270 3460 8269 3468 8221 3464 8221
      3459 8224 3454 8224 3448 8231 3447 8231
      3445 8228 3441 8225 3434 8233 3432 8231
      3430 8231
TIME...MOT...LOC 2231Z 268DEG 28KT 3459 8263 3435 8264 

HAIL...<.75IN
WIND...60MPH
 
$$

08
2 follow-up statements
769 
WWUS52 KGSP 122257
SVSGSP

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

SCC001-007-045-122315-
/O.CON.KGSP.SV.W.0057.000000T0000Z-160512T2315Z/
GREENVILLE SC-ABBEVILLE SC-ANDERSON SC-
657 PM EDT THU MAY 12 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR SOUTHEASTERN GREENVILLE...NORTHEASTERN ABBEVILLE AND SOUTHEASTERN
ANDERSON COUNTIES...

AT 657 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 15 MILES EAST OF ANDERSON TO 12 MILES NORTH OF
ABBEVILLE...MOVING EAST AT 35 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
BELTON...WILLIAMSTON...HONEA PATH...DUE WEST...DONALDS...PRINCETON...FORK
SHOALS...SHOALS JUNCTION AND WARE SHOALS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SCATTERED TREES AND POWER LINES WILL BE BLOWN DOWN IN THE WARNED
AREA. SEEK SHELTER INSIDE AN INTERIOR ROOM.

THESE STORMS ARE PRODUCING FREQUENT AND INTENSE LIGHTNING. TURN OFF
ELECTRICAL APPLIANCES. DO NOT USE CORDED TELEPHONES. DO NOT TAKE A
BATH OR SHOWER.

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 3434 8256 3462 8254 3468 8221 3464 8221
      3459 8224 3454 8224 3448 8231 3447 8231
      3445 8228 3441 8225 3434 8233 3432 8231
      3430 8231
TIME...MOT...LOC 2257Z 266DEG 29KT 3460 8239 3436 8240 

HAIL...<.75IN
WIND...60MPH
 
$$

08
204 
WWUS52 KGSP 122308
SVSGSP

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

SCC001-007-045-122317-
/O.EXP.KGSP.SV.W.0057.000000T0000Z-160512T2315Z/
GREENVILLE SC-ABBEVILLE SC-ANDERSON SC-
708 PM EDT THU MAY 12 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GREENVILLE...
NORTHEASTERN ABBEVILLE AND SOUTHEASTERN ANDERSON COUNTIES WILL EXPIRE
AT 715 PM EDT...
            
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR
A PORTION OF SOUTHERN GREENVILLE COUNTY UNTIL 730 PM EDT.

LAT...LON 3434 8256 3462 8254 3468 8221 3464 8221
      3459 8224 3454 8224 3448 8231 3447 8231
      3445 8228 3441 8225 3434 8233 3432 8231
      3430 8231
TIME...MOT...LOC 2305Z 268DEG 28KT 3460 8239 3436 8240 

$$

08

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at May 12, 4:45 PM EDT, 1 hour 46 minutes earlier.

Area forecast discussion, May 12, 4:45 PM EDT, 1 hour 46 minutes before
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, May 12, 3:19 PM EDT, 3 hours 12 minutes before
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.

In the hours before

Local storm report, May 12, 4:46 PM EDT, 1 hour 45 minutes before
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, May 12, 5:13 PM EDT, 1 hour 18 minutes before
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, May 12, 5:43 PM EDT, 48 minutes before
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, May 12, 5:47 PM EDT, 44 minutes before
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, May 12, 5:59 PM EDT, 32 minutes before
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
Special weather statement, May 12, 6:31 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
631 PM EDT THU MAY 12 2016

NCZ035-036-056-069-122300-
IREDELL NC-CATAWBA NC-ALEXANDER NC-LINCOLN NC-
631 PM EDT THU MAY 12 2016

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF EASTERN CATAWBA...
IREDELL...SOUTHEASTERN ALEXANDER AND EASTERN LINCOLN COUNTIES UNTIL
700 PM EDT...

AT 630 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM 3 MILES SOUTH OF TAYLORSVILLE TO 8 MILES
NORTHEAST OF NEWTON TO 8 MILES EAST OF LINCOLNTON...AND MOVING
NORTHEAST AT 20 MPH.

LOCATIONS TO BE IMPACTED INCLUDE...
STATESVILLE...TAYLORSVILLE...MOORESVILLE...WESTPORT...TROUTMAN...STONY
POINT...CLAREMONT...CATAWBA...HARMONY AND LOVE VALLEY.

PEA SIZE HAIL...WIND GUSTS UP TO 50 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.

&&

LAT...LON 3605 8070 3585 8071 3568 8077 3551 8074
      3551 8091 3549 8094 3546 8095 3541 8119
      3568 8114 3590 8127 3605 8102 3606 8098
TIME...MOT...LOC 2230Z 241DEG 19KT 3587 8117 3572 8108 3552 8111

ARK

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 12, 2:25 PM EDTSpecial Weather StatementGSPOconee35 min
May 12, 2:29 PM EDTSevere Thunderstorm WarningGSPOconee, Pickens23 min
May 12, 3:18 PM EDTSevere Thunderstorm WarningGSPOconee, Pickens27 min
May 12, 4:52 PM EDTSevere Thunderstorm WarningGSPGreenville, Laurens38 min
May 12, 5:13 PM EDTSpecial Weather StatementGSPChester32 min
May 12, 5:43 PM EDTSpecial Weather StatementGSPOconee47 min
May 12, 5:59 PM EDTSpecial Weather StatementGSPYork31 min
May 12, 6:51 PM EDTSevere Thunderstorm WarningGSPGreenville, Laurens, Spartanburg39 min
May 12, 7:26 PM EDTSevere Thunderstorm WarningGSPYork34 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2016Every severe thunderstorm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.