Thunderstorms developed along the Blue Ridge during the early afternoon and briefly organized into a cluster as they moved southeast across the foothills. A brief, isolated area of damaging winds occurred in this area.
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.
Thunderstorms developed along the Blue Ridge during the early afternoon and briefly organized into a cluster as they moved southeast across the foothills. A brief, isolated area of damaging winds occurred in this area.
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 24, 1:37 PM EST, 1 hour 9 minutes earlier.
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
237 PM EDT Sat Jun 24 2017
.SYNOPSIS...
A cold front will move southeast across the western Carolinas and
northeast Georgia this evening and then settle southeast of the
region overnight. Drier and cooler air will start to spread in from
the northwest through the day on Sunday, with these conditions
persisting through much of the week. Moisture will slowly return
around an offshore ridge of high pressure toward the end of the week.
&&
.NEAR TERM /THROUGH SUNDAY/...
As of 230 PM EDT: A broad 500 mb trough will persist over the
eastern CONUS through the near-term period. A cold front moving
southeast in the mean trough will pass east of the Blue Ridge by
evening, then settle southeast of the forecast area overnight. A
soupy pre-frontal airmass, with precipitable water values above two
inches across the eastern half of the area, will keep a heavy rain
and isolated flash flooding threat in place with any convection that
trains over a location. The convection developing off the Blue Ridge
will be the predominant rain maker through early evening as the
boundary moves southeast. Profiles continue to look a bit too warm
and moist for much in the way of severe weather, but mid levels will
begin drying from the west late this afternoon with a slow uptick in
surface to mid-level theta e lapses. Dewpoints in the lower 70s will
keep sbCAPE values in the 2000 to 2500 J/kg range southeast of the
front, but lapse rates will remain weak. Gusty winds and locally
heavy rainfall will remain the primary threats, with the focus
steadily shifting to the I-85 corridor and points southeast from
late afternoon through early evening.
Deeper layer drying will develop from the west overnight as the
frontal boundary gradually settles southeast of the region. Weak
northwest flow moisture may keep lower clouds banked up against the
southern Appalachians into Sunday morning, but little to no
continued shower activity is expected. Max temperatures may be
comparable to, or slightly higher than, today in the improving
sunshine, but humidity will be far more pleasant as dewpoints tumble
into the 50s and lower 60s.
&&
.SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/...
As of 115 PM EDT Saturday: Mean upper trough continues to make
progress into the Eastern Conus allowing dry air through a deep
layer to overspread the region Sunday night and Monday. Still
expecting a precipitous tumbling of sfc dwpts and below normal
temperatures. Upper trough axis progresses into the region on
Tuesday with s/wv energy progged to advect through it's base. Short
range model consensus is trending a tad more responsive with this
feature, and may wind up ringing out some showers acrs NW NC.
Tuesday should wind up being the coolest day of the week thanks to
more the way of cloudiness and an increase in northerly llvl flow.
&&
.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
As of 1230 PM EDT Saturday: Upper heights atop the SE Conus begin to
rise on Wednesday with llvl return flow just getting under way as
llvl ridge axis shifts to the coast. Little in the way of sensible
wx to speak of featuring temperatures and humidity levels below
climo. This trend continues into Thursday with an upward bump in max
temps and dwpts, but the atmosphere still should remain effectively
capped. A return to summertime warmth and humidity is expected for
Friday and Saturday within the progressively more moist, unstable
and less suppressed enviroment featuring daily thunderstorm chances.
&&
.AVIATION /19Z SATURDAY THROUGH THURSDAY/...
At KCLT: Convection continues to increase in coverage over the
foothills as the cold front slowly crosses the southern Appalachians
this afternoon. HRRR timing of the thunderstorms suggests peak
coverage around KCLT from 20Z to 00Z and this is featured in a
TEMPO. Although cigs should be primarily VFR going forward, any
precipitation will quickly take restrictions back into MVFR given
the moist airmass in place, and winds may become briefly gusty.
Anticipate a wind shift circa 04Z with fropa and strong drying
overnight into Sunday as winds trend northerly.
Elsewhere: Convective coverage will increase off the Blue Ridge this
afternoon and affect most terminal locations between 19Z and 00Z,
slightly earlier at KAVL and KHKY. MVFR cigs should lift to VFR this
afternoon but trend quickly back down to MVFR in any heavier showers
given the moist airmass. TEMPO gusts are likely at the foothills
sites near any thunderstorms. Expect clearing and drying from the
northwest post fropa during the overnight hours. Southwest winds
this afternoon will turn NW with fropa through the evening hours and
trend N to NE overnight into Sunday. Expect little more than a few
stratocumulus on Sunday with weak northwest flow moisture around
KAVL but drier across the foothills.
Outlook: The cold front will move away to the southeast through late
Sunday, with drier weather developing through most of next week.
Moisture will slowly return around an offshore ridge on Thursday.
Confidence Table...
18-24Z 00-06Z 06-12Z 12-18Z
KCLT High 95% High 100% High 100% High 100%
KGSP High 94% High 100% High 100% High 100%
KAVL High 99% High 100% High 91% High 95%
KHKY High 100% High 100% High 100% High 100%
KGMU High 92% High 100% High 100% High 100%
KAND High 92% 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...HG
NEAR TERM...HG
SHORT TERM...CSH
LONG TERM...CSH
AVIATION...HGHazardous Weather Outlook National Weather Service Greenville-Spartanburg SC 321 PM EDT Sat Jun 24 2017 NCZ033-035-048>053-058-059-062>065-501>507-509-251930- Avery-Alexander-Madison-Yancey-Mitchell-Swain-Haywood-Buncombe- Graham-Northern Jackson-Macon-Southern Jackson-Transylvania- Henderson-Caldwell Mountains-Greater Caldwell-Burke Mountains- Greater Burke-McDowell Mountains-Eastern McDowell- Rutherford Mountains-Polk Mountains- 321 PM EDT Sat Jun 24 2017 This Hazardous Weather Outlook is for western North Carolina. .DAY ONE...This Afternoon and Tonight. No hazardous weather is expected at this time. .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. GAZ010-017-018-026-028-029-NCZ036-037-056-057-068>072-082-508-510- SCZ001>014-019-251930- Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Iredell-Davie-Catawba- Rowan-Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-Union- Greater Rutherford-Eastern Polk-Oconee Mountains-Pickens Mountains- Greenville Mountains-Greater Oconee-Greater Pickens- Greater Greenville-Spartanburg-Cherokee-York-Anderson-Abbeville- Laurens-Chester-Greenwood- 321 PM EDT Sat Jun 24 2017 This Hazardous Weather Outlook is for northeast Georgia, piedmont North Carolina, and upstate South Carolina. .DAY ONE...This Afternoon and Tonight. A cold front will slowly cross the region from the northwest through this evening producing numerous showers and thunderstorms. Any of the storms will be capable of producing very gusty winds, cloud-to- ground lightning, and locally heavy rainfall. A few of the storms could also produce damaging wind gusts. Locations experiencing repeated thunderstorms may also see localized flash flooding. .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... Skywarn spotters are requested to forward any reports of damaging winds, or flash flooding to our office.
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
156 PM EDT SAT JUN 24 2017
NCZ056-502-504-241845-
Greater Burke NC-Greater Caldwell NC-Catawba NC-
156 PM EDT SAT JUN 24 2017
...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN CATAWBA...
SOUTHEASTERN CALDWELL AND BURKE COUNTIES UNTIL 245 PM EDT...
At 156 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles east of Marion, or near Lake James State Park, moving east at
20 mph.
Locations to be impacted include...
Morganton, Lenoir, Hickory, Longview, Sawmills, Granite Falls,
Valdese, Hudson, Icard and Cajah's Mountain.
Wind gusts up to 40 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.
&&
LAT...LON 3562 8130 3559 8171 3561 8172 3560 8174
3561 8176 3559 8177 3559 8179 3558 8180
3559 8180 3576 8187 3592 8144
TIME...MOT...LOC 1756Z 256DEG 19KT 3569 8186
KRENTZSpecial Weather Statement
National Weather Service Greenville-Spartanburg SC
234 PM EDT SAT JUN 24 2017
NCZ064-065-SCZ002-003-241900-
Transylvania NC-Henderson NC-Pickens Mountains SC-
Greenville Mountains SC-
234 PM EDT SAT JUN 24 2017
...AN AREA OF HEAVY RAIN WILL IMPACT EASTERN TRANSYLVANIA...CENTRAL
HENDERSON...NORTHWESTERN GREENVILLE AND NORTHWESTERN PICKENS COUNTIES
UNTIL 300 PM EDT...
At 234 PM EDT, Doppler radar indicated the leading edge of an area of
heavy rain along a line extending from 4 miles north of Brevard to 15
miles northwest of Pickens, and moving northeast at 55 mph.
Locations to be impacted include...
Brevard, Hendersonville, Etowah, Mountain Home, Laurel Park, Rosman,
Caesars Head State Park, Jones Gap State Park, Dupont State Forest
and Mills River.
Wind gusts up to 40 mph, pea size hail 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.
&&
LAT...LON 3543 8242 3511 8256 3501 8291 3500 8293
3505 8290 3505 8294 3533 8272
TIME...MOT...LOC 1834Z 229DEG 50KT 3529 8270 3505 8288
KRENTZSpecial Weather Statement National Weather Service Greenville-Spartanburg SC 318 PM EDT SAT JUN 24 2017 NCZ036-056-069>072-241945- Gaston NC-Iredell NC-Lincoln NC-Cabarrus NC-Mecklenburg NC- Catawba NC- 318 PM EDT SAT JUN 24 2017 ...A STRONG THUNDERSTORM WILL IMPACT WESTERN CABARRUS...SOUTHEASTERN CATAWBA...SOUTH CENTRAL IREDELL...EASTERN LINCOLN...NORTHWESTERN MECKLENBURG AND NORTHEASTERN GASTON COUNTIES UNTIL 345 PM EDT... At 318 PM EDT, Doppler radar was tracking a strong thunderstorm 10 miles northeast of Lincolnton, or near Denver, moving southeast at 25 mph. Locations to be impacted include... Huntersville, Cornelius, Mt Holly, Davidson, Stanley, Westport, Lake Norman, Boger City, Iron Station and Denver. Wind gusts up to 40 mph and pea size hail 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. && LAT...LON 3554 8125 3565 8108 3544 8069 3526 8106 TIME...MOT...LOC 1918Z 326DEG 36KT 3555 8108 KRENTZ
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</html>The Greer radar (KGSP), 14 km away, was scanning. The volume nearest the first event began at 19:46 UTC.
2 thunderstorm wind. Local standard time, as filed.
Power company reported multiple trees and large limbs blown down on power lines in the Greer/Blue Ridge area. At least one tree fell on a house.
Public reported (via Social Media) a gazebo blown against a house.
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 2026-09-30. Each event’s entry at NCEI: 710151, 710152.