Isolated to widely scattered thunderstorms developed over the Upstate during the afternoon. One storm produced brief damaging winds in Spartanburg County.
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.
Isolated to widely scattered thunderstorms developed over the Upstate during the afternoon. One storm produced brief damaging winds in Spartanburg County.
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 Jun 19, 1:00 PM EST, 45 minutes earlier.
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
200 PM EDT Mon Jun 19 2017
.SYNOPSIS...
A cold front slowly moves across our area this evening enhancing
shower and thunderstorm coverage before stalling across the Midlands
on Tuesday. The remnant frontal boundary may lift back north late
Tuesday for another round of showers and storms before dissipating
as drier high pressure builds in for Wednesday. Rainfall chances
increase yet again late week as tropical moisture spreads across
the Southeast U.S.
&&
.NEAR TERM /THROUGH TONIGHT/...
As of 1015am EDT: Currently only some light showers along the
Tennessee border with more showers anticipated this afternoon.
Latest CAM guidance suggests increasing convection after 1pm over
Western North Carolina and Northeast Georgia and spreading eastward
through the evening. NAM has convection exiting southeast out of
piedmont areas Tuesday morning as front makes some progress in that
direction.
The next 24 hours should be relatively busy as a cold front drops
slowly into the region from the WNW, nudged eastward by short waves
rotating around an upper trof whose axis remains to the west through
tonight. The best mid/upper forcing will move past to the N, but
some upper divergence could come into play late tonight across the
Piedmont. Convective instability is modest at best, though deep
layer shear improves over the recent past. SPC outlines some slight
risk area for severe thunderstorms over northeast parts of the CWA,
though morning CAMs do not impress. There is some potential for a
flash flood threat late tonight over the Piedmont and Upstate as
storms might develop and move repeatedly along the boundary in the
presence of high PW/deep moisture/deep warm cloud depth.
&&
.SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/...
As of 300 AM EDT Monday: an upper trough axis will remain nearly
stationary across the Great Lakes to the Tennessee Valley, but
should deamplify slightly on Tuesday. Then the trough will begin to
shift east. The result is that guidance is now converging a little
on the track of a tropical disturbance that will move into the Gulf
of Mexico. The consensus track is to take the low NNW toward the LA
coast or even toward eastern TX. Meanwhile, a sfc front will stall
out across central GA thru the Midlands and eastern NC. As the
tropical low drifts north across the Gulf, the front front may start
to activate and lift back north into the area late Tuesday thru
Wednesday. The 00z ECMWF continues to be the weakest and driest with
the boundary over the area. It also happens to be the furthest south
and west with the tropical track. With the front just to our south,
the southern tier will feature likely PoPs Tuesday, with CHC pops
for the rest of the area, except slight CHC near the TN border.
Wednesday may end up being relatively quiet, but the GFS and
Canadian bring moisture and instability back into the area from the
south. Will go with mainly slight CHC to low-end CHC on wednesday.
Temps are also tricky, as the bullish GFS has max temps as much as
10 deg below normal, which is pretty hard to do in mid June. Will go
with max temps a category or two below normal and min temps near to
slightly above normal under mostly cloudy skies. Heavy QPF
associated with tropical moisture looks to remain south and west of
the CWFA at least thru Wednesday night.
&&
.LONG TERM /THURSDAY THROUGH SUNDAY/...
As of 330 AM EDT Monday: the 00z models are generally sticking to
their guns. The GFS is still the easternmost with the tropical low
track, while the ECMWF is the furthest south and west. So the GFS
lifts the low into the lower MS Valley on Thursday bringing a
potential for heavy rain with the tropical moisture then. While the
ECMWF takes the low into south TX, then gradually picks it up into
the westerlies and has the moisture spread into area Friday thru
Sunday. Either way, unsettled weather with above climatology PoPs
will remain in the medium range forecast. The exact time frame for
the biggest heavy rain and flood threat is still too uncertain to
pin down yet. Max temps will remain at or slightly below normal
Thursday and possibly thru the weekend, as the area remains very
moist with plenty of cloud cover. Min temps will be slightly above
normal thru the medium range.
&&
.AVIATION /18Z MONDAY THROUGH SATURDAY/...
At KCLT and elsewhere: Some extended shower and thunderstorm
activity is anticipated through the TAF period with some TSRA now
present, with activity increasing through the afternoon. Showers
are associated with the slow passage of a synoptic cold front
currently across the area. Progress of cold front across the area
will also veer winds from southwesterly ahead of the front from now
until FROPA Tuesday morning, and northwesterly and lighter behind
the front. Timing for convective activity relies heavily on CAM
guidance which has activity from VCTS to TSRA from later this
afternoon through early Tuesday morning, followed by a relative lull
until more showers and thunderstorms Tuesday afternoon. With the
moist surface layer from rain, some morning fog and low ceilings are
possible, though the chances are reduced from recent days due some
reduction in moisture as the front passes. With extensive precipitation,
BKN to OVC skies will prevail with ceilings typically down to FL040,
and less in areas of active rain.
Outlook: Cold front will stall over the area on Tuesday, maintaining
scattered convection and associated periodic restrictions. Morning
fog/stratus is likely to return Tue-Wed mornings. Drier conditions
may finally return during the latter part of the week if the cold
front can push south of the area. A possible tropical system could
throw all this into disarray late in the week.
Confidence Table...
18-24Z 00-06Z 06-12Z 12-18Z
KCLT High 100% High 90% High 83% High 96%
KGSP High 100% High 100% High 95% High 96%
KAVL High 100% High 86% Low 56% High 92%
KHKY High 100% High 100% High 100% High 100%
KGMU High 100% High 99% High 86% High 93%
KAND High 100% High 98% Med 67% Med 69%
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:
www.weather.gov/gsp/aviation
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.
&&
SYNOPSIS...ARK
NEAR TERM...PM/WJM
SHORT TERM...ARK
LONG TERM...ARK
AVIATION...WJMHazardous Weather Outlook National Weather Service Greenville-Spartanburg SC 557 AM EDT Mon Jun 19 2017 GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065- 068>072-082-501>510-SCZ001>014-019-201000- 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- 557 AM EDT Mon Jun 19 2017 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 push into the region from the northwest today and slowly cross into the Piedmont tonight. Strong to severe thunderstorms with quarter-size hail and brief, damaging winds will be possible during the afternoon and evening hours, especially across the North Carolina Piedmont. Very heavy rainfall will be possible with the thunderstorms as well, and isolated flash flooding may develop in areas repeatedly affected by thunderstorms. .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... Skywarn spotters are requested to forward any reports of large hail, damaging winds, tornadoes, or flash flooding to our office. ARK
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
203 PM EDT MON JUN 19 2017
SCZ006-007-191830-
Spartanburg SC-Greater Greenville SC-
203 PM EDT MON JUN 19 2017
...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL GREENVILLE AND WEST
CENTRAL SPARTANBURG COUNTIES UNTIL 230 PM EDT...
At 203 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles northeast of Greenville Downtown, or near Taylors, moving east
at 30 mph.
Locations to be impacted include...
Greer, Taylors, Duncan, Lyman, Wellford, Reidville, Lake Robinson,
GSP Airport, Moore and Greenville Eastside.
Wind gusts up to 40 mph and pea size hail 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 3489 8236 3502 8237 3503 8234 3502 8197
3485 8204
TIME...MOT...LOC 1803Z 280DEG 18KT 3494 8230
SWSpecial Weather Statement National Weather Service Greenville-Spartanburg SC 233 PM EDT MON JUN 19 2017 SCZ007-008-013-191915- Cherokee SC-Union SC-Spartanburg SC- 233 PM EDT MON JUN 19 2017 ...A STRONG THUNDERSTORM WILL IMPACT CENTRAL SPARTANBURG...CENTRAL CHEROKEE AND NORTH CENTRAL UNION COUNTIES UNTIL 315 PM EDT... At 232 PM EDT, Doppler radar was tracking a strong thunderstorm 5 miles northwest of Spartanburg, or near USC Upstate, moving east at 25 mph. Locations to be impacted include... Spartanburg, Gaffney, Boiling Springs SC, Pacolet, Cowpens, Wellford, Inman, Mayo, Roebuck and Jonesville. 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 3488 8213 3508 8211 3509 8153 3481 8157 TIME...MOT...LOC 1832Z 276DEG 24KT 3498 8202 JPT
The Greer radar (KGSP), 33 km away, was scanning. The volume nearest the first event began at 18:44 UTC.
1 thunderstorm wind. Local standard time, as filed.
Spotter reported multiple large tree limbs blown down near the intersection of Cannon Campground Rd. and Plainview Dr.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Carolina in 2017Every state in 2017This day in weather historyWarnings in South Carolina, June 2017
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: 710728.