Alert archive / South Carolina / Special Weather Statements in 2016
Special Weather Statement, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this special weather statement at May 12, 2016, 5:13 PM EDT for Chester County, South Carolina. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 12, 2016, 5:13 PM EDT (21:13 UTC)
- Expired
- May 12, 2016, 5:45 PM EDT
- In force
- 32 min
- Issued by
- NWS Greenville-Spartanburg, SC
County Chester County, SC
The radar
The Columbia radar (KCAE), 86 km from the middle of the area, began a volume at 21:16 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.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.2 hours before the alert went out and 194 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.
- Mixed-layer CAPE
- 14 J/kg
- Mixed-layer CIN
- -169 J/kg
- Mixed-layer LCL
- 996 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at May 12, 4:45 PM EDT, 28 minutes earlier.
Area forecast discussion, May 12, 4:45 PM EDT, 28 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...HGHazardous weather outlook, May 12, 3:19 PM EDT, 1 hour 54 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
Special weather statement, May 12, 3:21 PM EDT, 1 hour 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
321 PM EDT THU MAY 12 2016
NCZ052-059-063-064-121945-
HAYWOOD NC-NORTHERN JACKSON NC-TRANSYLVANIA NC-SOUTHERN JACKSON NC-
321 PM EDT THU MAY 12 2016
...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF EAST CENTRAL
JACKSON...CENTRAL TRANSYLVANIA AND SOUTHEASTERN HAYWOOD COUNTIES
UNTIL 345 PM EDT...
AT 320 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10
MILES SOUTH OF WAYNESVILLE...OR NEAR THE BLUE RIDGE PARKWAY
BETWEEN BLACK BALSAM AND MOUNT PISGAH...MOVING EAST AT 20 MPH.
LOCATIONS TO BE IMPACTED INCLUDE...
B.R. PARKWAY-BLACK BALSAM TO MOUNT PISGAH...BLACK BALSAM AREA...
GRAVEYARD FIELDS...B.R. PARKWAY-BALSAM GAP TO BLACK BALSAM AREA...
SUNBURST AND BALSAM GROVE.
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 3539 8311 3545 8283 3522 8281 3524 8291
3525 8297 3526 8302 3528 8311
TIME...MOT...LOC 1920Z 267DEG 15KT 3534 8303
08Local storm report, May 12, 3:50 PM EDT, 1 hour 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
350 PM EDT THU MAY 12 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0344 PM HAIL 4 NE SENECA 34.73N 82.91W
05/12/2016 E0.75 INCH OCONEE SC PUBLIC
&&
JMPSpecial weather statement, May 12, 3:52 PM EDT, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
352 PM EDT THU MAY 12 2016
NCZ501-502-122015-
GREATER CALDWELL NC-CALDWELL MOUNTAINS NC-
352 PM EDT THU MAY 12 2016
...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF NORTHERN CALDWELL
COUNTY UNTIL 415 PM EDT...
AT 352 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10
MILES SOUTHEAST OF BLOWING ROCK...OR 4 MILES SOUTH OF DARBY...MOVING
NORTHEAST AT 20 MPH.
THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTHEASTERN
CALDWELL COUNTY.
PEA SIZE HAIL AND WIND GUSTS UP TO 45 MPH WILL BE POSSIBLE IN THESE
AREAS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
&&
LAT...LON 3610 8152 3610 8150 3609 8147 3609 8145
3607 8144 3608 8142 3605 8139 3597 8148
3602 8159 3612 8158 3612 8155
TIME...MOT...LOC 1952Z 204DEG 16KT 3606 8151
08Special weather statement, May 12, 4:36 PM EDT, 37 minutes before
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
Local storm report, May 12, 4:46 PM EDT, 27 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.
&&
JMPSpecial weather statement, May 12, 5:13 PM EDT, 0 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
08The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 12:50 PM EDT | Special Weather Statement | GSP | Henderson | 25 min |
| May 12, 1:40 PM EDT | Special Weather Statement | GSP | Graham | 35 min |
| May 12, 2:19 PM EDT | Special Weather Statement | GSP | Buncombe | 26 min |
| May 12, 2:53 PM EDT | Special Weather Statement | GSP | Yancey | 37 min |
| May 12, 3:21 PM EDT | Special Weather Statement | GSP | Jackson | 24 min |
| May 12, 3:52 PM EDT | Special Weather Statement | GSP | Caldwell | 23 min |
| May 12, 4:36 PM EDT | Special Weather Statement | GSP | Union | 24 min |
| May 12, 5:47 PM EDT | Special Weather Statement | GSP | Davie | 28 min |
| May 12, 6:14 PM EDT | Severe Thunderstorm Warning | GSP | Cleveland, Gaston | 31 min |
| May 12, 6:31 PM EDT | Special Weather Statement | GSP | Alexander, Iredell | 29 min |
| May 12, 7:02 PM EDT | Special Weather Statement | GSP | Gaston | 28 min |
| May 12, 7:15 PM EDT | Special Weather Statement | GSP | Cabarrus, Rowan | 30 min |
| May 12, 7:26 PM EDT | Severe Thunderstorm Warning | GSP | Mecklenburg | 34 min |
| May 12, 7:57 PM EDT | Severe Thunderstorm Warning | GSP | Mecklenburg, Union | 33 min |
| May 12, 2:25 PM EDT | Special Weather Statement | GSP | Oconee | 35 min |
| May 12, 2:29 PM EDT | Severe Thunderstorm Warning | GSP | Oconee, Pickens | 23 min |
| May 12, 3:18 PM EDT | Severe Thunderstorm Warning | GSP | Oconee, Pickens | 27 min |
| May 12, 4:52 PM EDT | Severe Thunderstorm Warning | GSP | Greenville, Laurens | 38 min |
| May 12, 5:43 PM EDT | Special Weather Statement | GSP | Oconee | 47 min |
| May 12, 5:59 PM EDT | Special Weather Statement | GSP | York | 31 min |
| May 12, 6:31 PM EDT | Severe Thunderstorm Warning | GSP | Abbeville, Anderson, Greenville | 44 min |
| May 12, 6:51 PM EDT | Severe Thunderstorm Warning | GSP | Greenville, Laurens, Spartanburg | 39 min |
Nearby
Special Weather Statements in South Carolina, 2016Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.