Isolated thunderstorms developed over the South Carolina Blue Ridge during the afternoon and moved south into the foothills. A couple of storms produced brief severe weather in the form of damaging wind gusts.
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 thunderstorms developed over the South Carolina Blue Ridge during the afternoon and moved south into the foothills. A couple of storms produced brief severe weather in the form of damaging wind gusts.
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, 1:45 PM EST, 2 hours 25 minutes earlier.
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
245 PM EDT Tue Jun 19 2018
.SYNOPSIS...
Warm high pressure will dominate the weather through Wednesday
before a frontal boundary pushes in from the north. The front will
stall out on Friday then lifts back north as a warm front over the
weekend.
&&
.NEAR TERM /THROUGH WEDNESDAY/...
As of 245 pm: Enhanced cu forming on ridgetops undergoing a
transition to deeper convection with several radar echoes over the
higher terrain. As expected...we are seeing a bit more easterly
movement to the showers and storms this afternoon, and a few
thunderstorms were already moving out over the nrn foothills of
NC. Otherwise, the fcst was on track.
Gradual changes are expected to take place over the next 24 hours
as an upper anticyclone/ridge continues to break down over the
southeast, even though we might not actually be able to detect much
of a difference in our weather. A short wave moving east across
the central Appalachians on Thursday will flatten out the ridge
and put a dent in it across the srn Appalachians, altho we have
only very weak dpva to show for it. Without much mid/upper support,
we should just see a continuation of scattered diurnal showers and
storms, which should flame out by midnight and then redevelop over
the higher terrain in late morning on Wednesday. The models are
surprisingly unimpressed with deep convection coverage on Wednesday
afternoon. In spite of this, will not make any big changes in the
fcst in keeping precip chances the same, thinking that storms that
form over the mtns will have even more of a westerly wind pushing
them out over the foothills and wrn Piedmont in the afternoon. No
air mass change is expected, so we will top out again just shy of
Heat Advisory criteria on Wednesday.
&&
.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
As of 225 PM EDT Tuesday: The short-term fcst picks up at 00z on
Thursday with flat upper ridging over the Southeast and broad upper
trofing north of New England. Over the next 48 hrs, a well-defined
closed upper low develops over the Central Plains and drifts
eastward towards our region. By the end of the period late Friday,
the upper low is expected to open back up to the mean flow as it
approaches the fcst area. At the sfc, a rather complex synoptic
pattern will prevail across the area for the duration of the short-
term period. On Thursday, a low will develop over Maryland and move
offshore later in the day as high pressure from Eastern Canada moves
southward and spreads over New England. On Friday, another low will
move out of the Plains and towards the region and move a weak cold
front thru the CWFA as it approaches. As for the sensible wx, both
Thurs and Fri will have higher than climatology chances for showers
and thunderstorms, with Fri advertising likely PoPs for the
afternoon/evening. In addition, with about 20 to 30 kts of bulk
shear each day, some of the storms could become better organized.
Temps will cool a bit each day, with highs coming down to near
normal for Friday.
&&
.LONG TERM /FRIDAY NIGHT THROUGH MONDAY/...
As of 205 PM Tuesday: An ulvl low will remain west of the Apps to
begin the period as waves of H5 vort energy continue to support deep
convec mainly over the nrn part of the FA. These storms shud linger
thru the overnight and wane thru daybreak as the trof axis and dyno
forcing shifts northeast. The pattern remains unsettled over the
weekend with warm sector instability aided by llvl frontal lift. This
front will work into the FA and stall out Sun providing a focusing
zone for afternoon tstms. Soundings show decent bulk shear for this
time of year and will expect abv avg coverage and possibly lines of
multi-cell tstms. This pattern could support anchored cells over the
higher terrain and increase a hydro threat...however antecedent
conditions are running rather low. The op models have backed off the
overall qpf response and more drying is noted within downslope flow...so
the non/mtn PoPs are generally advertised arnd climo.
Max temps will be right arnd normal Sat as cloud cover remains
rather high. Above normal temps return Sun/Mon...however sfc td/s
shud mix out just enuf to curtail any heat advisory concerns. The op
models agree well with the formation of a wedge pattern Mon night
into Tue and this will hold maxes at normal levels or just below
while good cloud cover is anticipated in e/ly H85 flow.
&&
.AVIATION /19Z TUESDAY THROUGH SUNDAY/...
At KCLT and elsewhere: VFR conditions are expected to prevail
through the period. Convective cloud bases this afternoon
should be in the 050-060 range and should remain scattered as
a prevailing condition. Will not rule out a temporary ceiling
if some of the deeper convection moves nearby...most likely at
KHKY/KGSP/KGMU. Coverage of storms will be too isolated to mention
at TAF sites at this time. Will amend accordingly to account for
storms later in the day. Wind should be light W or NW. Convective
clouds should thin out with sunset. Cannot rule out fog during
the pre-dawn hours at any site that receives rain this afternoon,
but it will be most likely in the mtn valleys, perhaps back down
to LIFR or VLIFR in the Little TN River valley. The fog should
burn off by mid morning on Wednesday. Convection is expected to
have greater coverage in the late afternoon, so KCLT gets a PROB30
for the end of the period.
Outlook: Chances for diurnal convection will gradually ramp up
through the remainder of the week, with the highest coverage
(scattered to numerous) expected Friday afternoon/evening, before
an anticipated return to a more typical convective cycle over the
weekend. Increasing chances for convection will also mean increasing
chances for late night/early morning fog and low stratus, although
the highest chances will remain in the mtn valleys.
Confidence Table...
18-24Z 00-06Z 06-12Z 12-18Z
KCLT High 100% High 100% High 100% High 100%
KGSP High 100% High 100% High 100% High 100%
KAVL High 100% High 100% High 100% High 100%
KHKY High 100% High 100% High 100% High 100%
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 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...SBK
NEAR TERM...PM
SHORT TERM...JPT
LONG TERM...SBK
AVIATION...PMHazardous Weather Outlook National Weather Service Greenville-Spartanburg SC 419 PM EDT Tue Jun 19 2018 GAZ010-017-NCZ033-035-036-048>053-056-058-059-062>065-068-069- 501>510-SCZ001>003-202030- Rabun-Habersham-Avery-Alexander-Iredell-Madison-Yancey-Mitchell- Swain-Haywood-Buncombe-Catawba-Graham-Northern Jackson-Macon- Southern Jackson-Transylvania-Henderson-Cleveland-Lincoln- 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- 419 PM EDT Tue Jun 19 2018 This Hazardous Weather Outlook is for northeast Georgia, piedmont North Carolina, western North Carolina and upstate South Carolina. .DAY ONE...Tonight. Isolated to widely scattered thunderstorms will continue to develop across the mountains through the evening. Isolated storms may reach severe levels and produce large hail and damaging winds. Otherwise, the main threats will be cloud- to-ground lightning and torrential downpours. Locally heavy rainfall due to slow-moving storms may cause isolated flooding. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. ..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. ..Monday...No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... None. GAZ018-026-028-029-NCZ037-057-070>072-082-SCZ004>014-019-202030- Stephens-Franklin-Hart-Elbert-Davie-Rowan-Gaston-Mecklenburg- Cabarrus-Union-Greater Oconee-Greater Pickens-Greater Greenville- Spartanburg-Cherokee-York-Anderson-Abbeville-Laurens-Chester- Greenwood- 419 PM EDT Tue Jun 19 2018 This Hazardous Weather Outlook is for northeast Georgia, piedmont North Carolina and upstate South Carolina. .DAY ONE...Tonight. Isolated to scattered thunderstorms will continue to develop across the Piedmont this evening. The main threats from these storms include cloud-to-ground lighting, small hail, torrential downpours, and gusty winds. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. ..Wednesday...Excessive heat possible. Heat index values will reach 100 to 105 across most of the Piedmont of the Carolinas and Northeast Georgia. ..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. ..Monday...No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... None. JPT
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
303 PM EDT TUE JUN 19 2018
SCZ001-191930-
Oconee Mountains SC-
303 PM EDT TUE JUN 19 2018
...A STRONG THUNDERSTORM WILL IMPACT CENTRAL OCONEE COUNTY UNTIL 330
PM EDT...
At 303 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles northwest of Walhalla, or near Oconee State Park. This storm
was nearly stationary.
Locations to be impacted include...
Oconee State Park and Mountain Rest.
Wind gusts up to 45 mph, pea size hail 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.
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.
&&
LAT...LON 3490 8320 3491 8318 3491 8305 3480 8309
3486 8321
TIME...MOT...LOC 1903Z 294DEG 0KT 3487 8315
08Special Weather Statement National Weather Service Greenville-Spartanburg SC 322 PM EDT TUE JUN 19 2018 NCZ064-065-SCZ003-191945- Transylvania NC-Henderson NC-Greenville Mountains SC- 322 PM EDT TUE JUN 19 2018 ...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL TRANSYLVANIA... SOUTH CENTRAL HENDERSON AND NORTH CENTRAL GREENVILLE COUNTIES UNTIL 345 PM EDT... At 322 PM EDT, Doppler radar was tracking a strong thunderstorm 9 miles east of Brevard, or near Dupont State Forest, moving east at 15 mph. Locations to be impacted include... Hendersonville, Flat Rock, Jones Gap State Park, Dupont State Forest, Caesars Head State Park, Valley Hill, Little River, North Saluda Reservoir, Tuxedo and Crab Creek. Wind gusts up to 55 mph, half inch hail 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. Dime to nickel size hail can cause considerable damage to vehicles. Consider moving vehicles to a covered storage area before the storm arrives. 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. && LAT...LON 3512 8265 3524 8267 3533 8240 3512 8236 TIME...MOT...LOC 1922Z 256DEG 11KT 3520 8257 08
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
341 PM EDT TUE JUN 19 2018
NCZ063-192015-
Southern Jackson NC-
341 PM EDT TUE JUN 19 2018
...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN JACKSON COUNTY
UNTIL 415 PM EDT...
At 341 PM EDT, Doppler radar was tracking a strong thunderstorm 17
miles east of Franklin, or near Cashiers. This storm was nearly
stationary.
Locations to be impacted include...
Cashiers, Whiteside Mountain and Sapphire.
Wind gusts up to 50 mph, pea size hail and very heavy rainfall rates
up to 2 inches per hour will be possible in these areas.
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.
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.
&&
LAT...LON 3508 8314 3510 8315 3514 8314 3512 8300
3508 8304 3506 8305 3505 8306 3505 8304
3504 8303 3504 8302 3502 8303 3501 8306
3508 8316
TIME...MOT...LOC 1941Z 290DEG 4KT 3509 8310
08Special Weather Statement National Weather Service Greenville-Spartanburg SC 355 PM EDT TUE JUN 19 2018 NCZ064-SCZ001-002-192030- Transylvania NC-Pickens Mountains SC-Oconee Mountains SC- 355 PM EDT TUE JUN 19 2018 ...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN TRANSYLVANIA... NORTHWESTERN PICKENS AND NORTHEASTERN OCONEE COUNTIES UNTIL 430 PM EDT... At 355 PM EDT, Doppler radar was tracking a strong thunderstorm 17 miles southwest of Brevard, or near Gorges State Park, moving southeast at 10 mph. Locations to be impacted include... Gorges State Park, Lake Jocassee, Devils Fork State Park, Lake Toxaway, Jocassee Gorges, Rocky Bottom, Sapphire and Sassafras Mountain. Wind gusts up to 50 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. 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. The northern end of Lake Jocassee is in the path of this storm. Cloud to ground lightning and gusty winds will create dangerous boating conditions. Move to shore immediately. && LAT...LON 3514 8297 3506 8278 3493 8292 3506 8304 TIME...MOT...LOC 1955Z 311DEG 8KT 3507 8296 08
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
431 PM EDT TUE JUN 19 2018
SCZ002-005-192115-
Pickens Mountains SC-Greater Pickens SC-
431 PM EDT TUE JUN 19 2018
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN PICKENS COUNTY
UNTIL 515 PM EDT...
At 430 PM EDT, Doppler radar was tracking a strong thunderstorm 11
miles northwest of Pickens, or near Jocassee Gorges, moving southeast
at 15 mph.
Locations to be impacted include...
Pickens, Keowee Toxaway State Park, Jocassee Gorges, Lake Jocassee,
Lake Keowee, Sunset, Nine Times and Rocky Bottom.
Wind gusts up to 45 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.
This storm will produce strong winds on the northern and central
portions of Lake Jocassee. Cloud to ground lightning and strong
gusts will create dangerous boating conditions. Move to shore
immediately.
&&
LAT...LON 3501 8293 3501 8291 3502 8292 3507 8285
3507 8284 3494 8262 3480 8285
TIME...MOT...LOC 2030Z 318DEG 11KT 3501 8285
08Special Weather Statement
National Weather Service Greenville-Spartanburg SC
453 PM EDT TUE JUN 19 2018
SCZ006-007-192145-
Spartanburg SC-Greater Greenville SC-
453 PM EDT TUE JUN 19 2018
...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL GREENVILLE AND WEST
CENTRAL SPARTANBURG COUNTIES UNTIL 545 PM EDT...
At 453 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles east of Greenville Downtown, or near GSP Airport, moving south
at 5 mph.
Locations to be impacted include...
Greer, Mauldin, Five Forks, GSP Airport, Taylors, Greenville Eastside
and Simpsonville.
Wind gusts up to 50 mph and dime 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.
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 3475 8236 3494 8230 3494 8219 3478 8214
3478 8215 3477 8215 3474 8217
TIME...MOT...LOC 2053Z 002DEG 6KT 3487 8225
08The Greer radar (KGSP), 4 km away, was scanning. The volume nearest the first event began at 21:11 UTC.
2 thunderstorm wind. Local standard time, as filed.
Highway patrol reported a tree blown down at Freeman Farm Rd and Jones Rd and another tree down at Brockman-McClimon Rd and Abner Creek Rd.
County comms reported multiple trees blown down near the intersection of Highway 178 and Rices Creek Rd.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Carolina in 2018Every state in 2018This day in weather historyWarnings in South Carolina, June 2018
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: 768654, 768655.