Isolated thunderstorms developed over the North Carolina Piedmont and foothills during the evening. A couple of the storms produced brief severe weather.
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 North Carolina Piedmont and foothills during the evening. A couple of the storms produced brief severe weather.
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 Sep 1, 4:35 PM EST, 1 hour 32 minutes earlier.
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
535 PM EDT Sat Sep 1 2018
.SYNOPSIS...
A strong upper-level ridge will dominate the Southeast through the
middle of next week, resulting in above normal temperatures and
reduced precipitation chances outside of the mountains.
&&
.NEAR TERM /THROUGH SUNDAY/...
As of 515 PM: Convective coverage is once again greatest this
afternoon around the I-77 corridor where LAPS sbCAPE values are
running 2000 to 3000 J/kg and outflows are driving additional
development. PoPs have been increased in this area for greater
scattered coverage through early evening, with little change
elsewhere. Cannot rule out a damaging downburst or two with very
high DCAPE values in place. An isolated flood threat will continue
with any training of cells.
Otherwise, a moist, easterly low level flow remains in place through
the night. This may keep isolated showers along and near the Blue
Ridge Escarpment even as overall convection wanes. Should see
mountain valley fog again overnight, with patchy fog and low clouds
elsewhere. Lows will be around 5 degrees above normal.
Upper ridge remains in place Sunday with a moist low level easterly
flow. Expect a downturn in convective coverage with the ridge
helping lower instability. However, there should be enough moisture
and instability for scattered coverage over the mountains and
isolated coverage elsewhere. Thickness values actually drop a little
Sunday despite the ridge. This with the potential for morning clouds
should keep highs a little lower than Saturday's readings. Still,
expect highs around 5 degrees above normal.
&&
.SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/...
As of 245 PM Sat: The East Coast ridge will approach peak intensity
during the short-range period, possibly topping out at 597dm
heading into Tuesday. The impact of the ridge is significantly more
evident in the PoPs and total water content than it was yesterday,
with the much lower PoPs in the overnight forecast carried over
into today's guidance and PWs nearer to the 75th percentile (~1.5
inches) than the 90th percentile. The 700-850 mb inversion is
progged to be a bit stronger on Tuesday as the ridge strengthens
over the Mid-Atlantic, translating to a stronger cap. Furthermore,
the upslope-inducing easterly and southeasterly flow into the
region appears to be less influential on convective initiation
and coverage in recent guidance during the period. Therefore,
the net effect will be negligible diurnal precip chances over the
Piedmont and only slight chances over the mountains. We continue
to advertise a localized heavy rain threat with any storm that
develops due to very week steering flow and healthy PWs, but PWs
aren't high enough and these pulse cells should last long enough to
be overly concerned. Ample subsidence-induced dry air is present
in the mid-levels so isolated strong downdrafts remain possible,
but this threat is also decreasing. If anything, the sudden lack of
rainfall over the past couple of weeks across much of the area may
be the greater concern for many. Temperatures remain 2-4 degrees
above-normal which isn't too bad considering the strength of the
ridge, but humidity values will remain quite uncomfortable.
&&
.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
As of 245 PM Sun: As mentioned above, the Eastern ConUS ridge will
peak in intensity Tuesday into Wednesday and then slowly breakdown
heading into next weekend in response to height falls over the
Northeast and Great Lakes regions. As shortwave energy depicted
by an elongated vorticity axis drops south into the Mid-Atlantic,
an associated weak cold front will also drift south.
As the ridge breaks down, guidance becomes more bullish about
diurnally driven convective chances, increasing PoPs to high-end
chance (40-55%) across the mountains and introducing chance PoPs
across the Piedmont and Foothills beginning Wednesday but especially
Thursday through Saturday as the front approaches the area (but
remains to our north). These increased chances are in response to
increasing laspe rates as the column aloft cools somewhat and the
persistent presence of weak easterly to southeasterly flow, which
will advect moisture, induce upslope forcing, and perhaps alllow
the seabreeze to work into the central Carolinas. Total moisture
content will increase a bit as well late week so with continued weak
steering flow the localized heavy rain threat will increase into
the weekend as well. Max temperatures change little despite the
pattern evolution, remaining 2-4 degrees above normal. Guidance
wants to reduce dewpoints into the middle and upper 60s with
slight reductions in min temperature late week despite increasing
moisture. We shall see if this trend continues in future cycles.
The guidance is grumbling about increased activity over the
northern Gulf in association with tropical waves propagating
through the easterly flow to the south of the ridge as we head
into late week, but with the ridge decaying overhead the deepest
moisture at this time is pushed well west of our area. During the
peak of the tropical season, upper-level ridges are our best
friends. Nevertheless, that moisture will take a circuitous route
around the ridge into the Mid-South and Ohio Valley and pool along
the front as it sags south.
&&
.AVIATION /22Z SATURDAY THROUGH THURSDAY/...
At KCLT and elsewhere: TEMPO TSRA continues for KCLT, along with
gusts in the higher DCAPE air. The next best convective chances will
be around KHKY where TEMPO may be needed soon. Expect TSRA to be
more isolated in nature elsewhere. Guidance is still showing at
least IFR fog and stratus in the mountain valleys overnight, so have
that for KAVL. Guidance also hinting at some MVFR developing outside
of the mountains in the moist low level easterly flow overnight.
Have added this at KHKY where probability is higher but just few
MVFR at KCLT where it is more uncertain. Low VFR toward morning
elsewhere. Conditions should improve by 14Z Sunday but low VFR cigs
could hold on through morning. Light S to SE wind today becomes
light E to NE overnight, then light SE during the day Sunday.
Outlook: Scattered diurnal showers and thunderstorms are expected
each afternoon Sunday through Tuesday. Areas of fog and low stratus
can also be expected each morning, primarily in the mtn valleys.
Confidence Table...
21-03z 03-09Z 09-15Z 15-18Z
KCLT High 100% High 100% High 100% High 100%
KGSP High 100% High 100% High 100% High 100%
KAVL High 100% High 100% Med 60% High 100%
KHKY High 100% High 100% High 83% High 98%
KGMU High 100% High 100% High 100% High 100%
KAND High 100% High 100% High 100% High 98%
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...JPT
NEAR TERM...HG/RWH
SHORT TERM...JMP
LONG TERM...JMP
AVIATION...HG/RWHHazardous Weather Outlook National Weather Service Greenville-Spartanburg SC 330 PM EDT Sat Sep 1 2018 GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065- 068>072-082-501>510-SCZ001>014-019-021930- 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- 330 PM EDT Sat Sep 1 2018 This Hazardous Weather Outlook is for northeast Georgia, piedmont North Carolina, western North Carolina and upstate South Carolina. .DAY ONE...This afternoon and tonight. Isolated to scattered thunderstorms are expected through this evening. Cloud-to-ground lightning, torrential rainfall, and strong wind gusts are possible with any of these thunderstorms. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... None. JMP
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
432 PM EDT SAT SEP 1 2018
NCZ072-012100-
Cabarrus NC-
432 PM EDT SAT SEP 1 2018
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN CABARRUS COUNTY
UNTIL 500 PM EDT...
At 431 PM EDT, Doppler radar was tracking a strong thunderstorm 4
miles northeast of Downtown Concord. This storm was nearly
stationary.
Locations to be impacted include...
Downtown Concord, Kannapolis, Mt Pleasant, Harrisburg and West
Concord.
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...
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 3534 8040 3528 8063 3550 8061 3550 8047
3543 8034
TIME...MOT...LOC 2031Z 342DEG 4KT 3545 8053
MOORESpecial Weather Statement
National Weather Service Greenville-Spartanburg SC
500 PM EDT SAT SEP 1 2018
NCZ056-012130-
Catawba NC-
500 PM EDT SAT SEP 1 2018
...A STRONG THUNDERSTORM WILL IMPACT SOUTH CENTRAL CATAWBA COUNTY
UNTIL 530 PM EDT...
At 459 PM EDT, Doppler radar was tracking a strong thunderstorm 4
miles southeast of Newton, or near Maiden, moving north at 5 mph.
Locations to be impacted include...
Newton, Conover, Maiden, Claremont and Bandys.
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...
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 3557 8110 3556 8122 3571 8126 3573 8119
3572 8110
TIME...MOT...LOC 2059Z 175DEG 6KT 3562 8117
MOORESpecial Weather Statement
National Weather Service Greenville-Spartanburg SC
505 PM EDT SAT SEP 1 2018
NCZ504-012130-
Greater Burke NC-
505 PM EDT SAT SEP 1 2018
...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN BURKE COUNTY UNTIL
530 PM EDT...
At 504 PM EDT, Doppler radar was tracking a strong thunderstorm 6
miles southeast of Morganton, or 5 miles north of South Mountains
State Park, moving north at 5 mph.
Locations to be impacted include...
Morganton, Valdese, Rutherford College, South Mountains State Park,
Drexel and Pleasant Grove.
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...
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 3559 8152 3561 8167 3575 8171 3575 8154
3571 8148
TIME...MOT...LOC 2104Z 175DEG 6KT 3568 8162
MOORESpecial Weather Statement
National Weather Service Greenville-Spartanburg SC
512 PM EDT SAT SEP 1 2018
NCZ070-071-012145-
Gaston NC-Mecklenburg NC-
512 PM EDT SAT SEP 1 2018
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN MECKLENBURG AND
NORTHEASTERN GASTON COUNTIES UNTIL 545 PM EDT...
At 512 PM EDT, Doppler radar was tracking a strong thunderstorm 6
miles northwest of Uptown Charlotte, or near Northwest Charlotte,
moving north at 5 mph.
Locations to be impacted include...
Huntersville, Northwest Charlotte, Paw Creek, Mt Holly, Northeast
Charlotte, Central Charlotte, Lucia and Croft.
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...
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.
Mountain Island Lake 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 3524 8091 3526 8099 3538 8109 3541 8100
3540 8100 3540 8096 3542 8096 3545 8084
3528 8080
TIME...MOT...LOC 2112Z 163DEG 6KT 3530 8091
MOORESpecial Weather Statement
National Weather Service Greenville-Spartanburg SC
531 PM EDT SAT SEP 1 2018
NCZ048-012200-
Madison NC-
531 PM EDT SAT SEP 1 2018
...A STRONG THUNDERSTORM WILL IMPACT CENTRAL MADISON COUNTY UNTIL 600
PM EDT...
At 531 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles northwest of Marshall, or 4 miles east of Hot Springs, moving
northwest at 5 mph.
Locations to be impacted include...
Hot Springs, Allenstand and Walnut.
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...
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 3590 8266 3584 8277 3594 8289 3595 8287
3595 8285 3592 8282 3593 8281 3594 8281
3597 8278 3598 8279 3600 8278 3600 8276
3603 8271
TIME...MOT...LOC 2131Z 148DEG 6KT 3591 8275
MOORESpecial Weather Statement National Weather Service Greenville-Spartanburg SC 650 PM EDT SAT SEP 1 2018 NCZ036-012315- Iredell NC- 650 PM EDT SAT SEP 1 2018 ...A STRONG THUNDERSTORM WILL IMPACT NORTHERN IREDELL COUNTY UNTIL 715 PM EDT... At 650 PM EDT, Doppler radar was tracking a strong thunderstorm 4 miles northeast of Statesville, moving north at 5 mph. Locations to be impacted include... Statesville, Harmony, Turnersburg, Olin and Cool Springs. 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... 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 3581 8074 3577 8090 3590 8102 3596 8077 TIME...MOT...LOC 2250Z 163DEG 5KT 3585 8085 MOORE
The Roanoke radar (KFCX), 143 km away, was scanning. The volume nearest the first event began at 23:05 UTC.
4 thunderstorm wind, 1 hail. Local standard time, as filed.
Fd reported trees blown down on power lines at S. Chipley Ford Rd and Viewmont Ct. County comms reported other trees nad power lines down on Front St.
Spotter reported multiple trees and power lines blown down along Edwards Rd and Sheffield Road. A large limb fell on a house on Edwards Rd.
Ham radio operator reported a tree blown down on a house at Forbes Rd. and Little Mountain Rd.
Media reported multiple trees blown down on Powerhouse Rd.
Media reported up to quarter size hail covering the ground in the area around Powerhouse Rd, RR White Dr, and Conley Bumgarner Rd.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Carolina in 2018Every state in 2018This day in weather historyWarnings in North Carolina, September 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: 785377, 785380, 785383, 785385, 785386.