What forecasters said that day
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 11, 1:51 PM EST, 3 hours earlier.
Area forecast discussion, Jun 11, 1:51 PM EST, 3 hours before
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
251 PM EDT Mon Jun 11 2018
.SYNOPSIS...
A weak cold front is expected to move south across the region
tonight. Behind the front, Tuesday should be relatively cloudy and
not as warm. Typical summerlike conditions will return for Wednesday
through the weekend.
&&
.NEAR TERM /THROUGH TUESDAY/...
As of 245 PM EDT Monday: This update includes the discussion
for the 18Z TAFs along with the afternoon package update.
Mid-level cloud cover was more expansive through the morning hours
than previously anticipated across the western Carolinas and
northeast GA, making the temperature forecast a tricky one today.
With less cloud cover along the I-77 corridor, Charlotte ended up
being the warmest of the official climate sites today (currently 91
degrees), with temperatures elsewhere remaining in the upper 70s to
low to mid 80s. Expect this to hold true as cloud cover continues to
expand eastward. Though shower activity was previously confined to
the higher elevations along the TN border this morning, shower and
thunderstorm development has blossomed elsewhere within the last
hour, though will note activity is more widespread west, east and
south of the FA attm. With portions of a backdoor cold/cool front
continuing to drop into NC from the northeast along with a low level
boundary which has developed along portions of the NW Piedmont,
areas along and just east of the I-77 corridor as well as areas
across portions of northeast GA may be the areas that see the most
convective activity today, though isolated showers and thunderstorms
cannot be ruled out across the foothills into the Upstate. Though
instability is marginal, would not entirely rule out a severe
thunderstorm today as the area remains within SPC's Day 1 Marginal
Risk.
Once the front pushes through the FA tonight, instability will
become obsolete and sfc high pressure off to the northeast will
build in overnight and into Tuesday, allowing for a wedge front to
be the main weather pattern feature through the rest of the near
term forecast period. Increasing cloud cover tonight is expected to
persist through into Tuesday as the feature settles in, allowing for
overnight temperatures to remain above normal. Temperatures on
Tuesday will be cooler than today, anywhere from 5 to 10 degrees
cooler, with overall light northeast winds prevailing.
&&
.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/...
As of 130 PM EDT Monday: Thanks to the progressive pattern,
weak sfc ridging nosed swwd into the cwfa will give to a broader
w to sw flow on Wednesday, with developing lee troughing.
Weakly cyclonic flow aloft will aid in diurnal deep convective
development, with coverage possibly becoming numerous in the
mountains. Maximum temperatures should bounce back to around
climo. The pattern atop the SE CONUS is progged to change little
through Thursday, featuring a weak westerly flow aloft and a
non-descript sfc pattern. Outside of making an upward
adjustment to inherited max temps, a pretty typical mid-June day
is expected featuring diurnally enhanced tstms.
&&
.LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/...
As of 200 PM EDT Monday: Mid level ridging will build across
the area during the middle of the week but westerly flow will
remain not far to the north. The ridging will strengthen over
the middle of the country by next weekend while a low develops
just off the mid- Atlantic region.
Fairly typical early summer conditions are expected as a result of
this pattern. Expect more coverage of diurnally enhanced showers and
thunderstorms for the middle of the week with the coverage being
less Friday through the weekend as the ridge asserts its influence.
&&
.AVIATION /19Z MONDAY THROUGH SATURDAY/...
At KCLT and elsewhere: VFR prevails across the area this
afternoon with a backdoor cool front just to our northeast, and a
boundary across the NW Piedmont, which has allowed for winds from
KGSP/KGMU to KCLT to become more northerly over the past few hours,
while NW winds prevail elsewhere. Showers and thunderstorms are
beginning to develop across portions of the FA this afternoon,
mainly just east of the I-77 corridor, as well as along the NC/TN
border and across northeast GA. Though more cloud cover was in place
across the area this morning than previously anticipated, expect
isolated to scattered activity to grow and persist through the
evening hours. Thus, have kept VCSH/VCTS at all TAF sites this
afternoon and evening. Otherwise, expect VFR cigs to gradually
deteriorate to MVFR/IFR overnight as sfc wedge builds in across the
area with the parent sfc high pressure to the northeast. Isolated
showers and thunderstorms are possible on Wednesday as well, but
anticipate coverage to be less than today. Winds will become
northeasterly overnight with this feature (except for KAVL -
southeast) and prevail through the end of the valid TAF period, 3 to
8 kts.
Outlook: Periods of showers and thunderstorms will be possible each
day, primarily in the afternoon, along with some fog and reduced
ceilings, primarily in the mountains.
Confidence Table...
19-01Z 01-07Z 07-13Z 13-18Z
KCLT High 100% High 97% High 82% High 88%
KGSP High 100% High 95% High 84% High 89%
KAVL High 100% High 84% Med 79% High 88%
KHKY High 100% Med 78% High 83% High 90%
KGMU High 100% High 92% High 85% High 89%
KAND High 100% High 100% High 91% 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...SW
NEAR TERM...SGL
SHORT TERM...CSH
LONG TERM...SW
AVIATION...SGLHazardous weather outlook, Jun 11, 1:51 PM EST, 3 hours before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
251 PM EDT Mon Jun 11 2018
GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-121900-
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-
251 PM EDT Mon Jun 11 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.
Scattered thunderstorms will continue to develop into this evening.
A few of the storms may become severe with damaging wind gusts.
Otherwise...frequent cloud-to-ground lightning and heavy downpours
will be the main threats. Storms may continue for several hours after
dark.
.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...
None.
In the hours before
Special weather statement, Jun 11, 2:34 PM EST, 2 hours 17 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
334 PM EDT MON JUN 11 2018
GAZ029-112000-
Elbert GA-
334 PM EDT MON JUN 11 2018
...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN ELBERT COUNTY UNTIL
400 PM EDT...
At 334 PM EDT, Doppler radar was tracking a strong thunderstorm 6
miles northwest of Elberton, or 5 miles southeast of Bowman, moving
southwest at 10 mph.
Locations to be impacted include...
Dewy Rose and Sweet City.
Wind gusts up to 40 mph and pea size hail will be possible in these
areas.
LAT...LON 3402 8294 3403 8294 3404 8295 3403 8296
3405 8299 3408 8300 3408 8301 3410 8304
3411 8303 3412 8305 3415 8306 3416 8309
3421 8298 3414 8287 3401 8293
TIME...MOT...LOC 1934Z 037DEG 8KT 3415 8297
LANESpecial weather statement, Jun 11, 2:48 PM EST, 2 hours 3 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
348 PM EDT MON JUN 11 2018
GAZ010-017-112015-
Rabun GA-Habersham GA-
348 PM EDT MON JUN 11 2018
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN HABERSHAM AND WEST
CENTRAL RABUN COUNTIES UNTIL 415 PM EDT...
At 347 PM EDT, Doppler radar was tracking a strong thunderstorm 10
miles west of Clayton, or over Moccasin Creek State Park, moving
southwest at 15 mph.
Locations to be impacted include...
Lake Burton, Moccasin Creek State Park and Batesville.
Wind gusts up to 45 mph and pea size hail will be possible in these
areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Lake Burton 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 3482 8365 3484 8366 3487 8366 3490 8361
3487 8350 3470 8363 3471 8364 3473 8362
3474 8362 3475 8363 3476 8363 3480 8368
TIME...MOT...LOC 1947Z 028DEG 12KT 3485 8358
LANESpecial weather statement, Jun 11, 3:19 PM EST, 1 hour 32 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
419 PM EDT MON JUN 11 2018
GAZ010-017-112045-
Rabun GA-Habersham GA-
419 PM EDT MON JUN 11 2018
...STRONG THUNDERSTORMS WILL IMPACT NORTHERN HABERSHAM AND
SOUTHWESTERN RABUN COUNTIES UNTIL 445 PM EDT...
At 419 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from 10 miles northwest of Clarkesville to 5 miles
south of Clayton, and moving southeast at 10 mph.
Locations to be impacted include...
Tallulah Falls, Lake Rabun, Lakemont, Tallulah Gorge State Park,
Batesville, Seed Lake and Turnerville.
Wind gusts up to 50 mph and half inch 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 3469 8364 3471 8364 3473 8362 3477 8363
3486 8334 3476 8332 3475 8333 3474 8335
3471 8335 3464 8365
TIME...MOT...LOC 2019Z 333DEG 7KT 3474 8361 3480 8337
LANESpecial weather statement, Jun 11, 3:46 PM EST, 1 hour 5 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
446 PM EDT MON JUN 11 2018
GAZ010-017-112115-
Rabun GA-Habersham GA-
446 PM EDT MON JUN 11 2018
...A STRONG THUNDERSTORM WILL IMPACT CENTRAL HABERSHAM AND SOUTH
CENTRAL RABUN COUNTIES UNTIL 515 PM EDT...
At 445 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles northeast of Clarkesville, or near Lake Rabun, moving south at
10 mph.
Locations to be impacted include...
Clarkesville, Tallulah Falls, Lake Rabun, Lakemont, Tallulah Gorge
State Park, Hollywood, Seed Lake and Turnerville.
Wind gusts up to 50 mph and half inch 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 3478 8352 3480 8342 3469 8334 3467 8337
3465 8338 3462 8341 3460 8359
TIME...MOT...LOC 2045Z 004DEG 10KT 3471 8346
LANESpecial weather statement, Jun 11, 4:25 PM EST, 26 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
525 PM EDT MON JUN 11 2018
NCZ062-112200-
Macon NC-
525 PM EDT MON JUN 11 2018
...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN MACON COUNTY UNTIL
600 PM EDT...
At 525 PM EDT, Doppler radar was tracking a strong thunderstorm 12
miles east of Hayesville, or 6 miles south of Nantahala Lake, moving
southwest at 10 mph.
Locations to be impacted include...
Rainbow Springs.
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.
&&
LAT...LON 3518 8360 3513 8353 3505 8356 3507 8357
3509 8359 3511 8362 3513 8362 3512 8364
3514 8364 3514 8365 3515 8366
TIME...MOT...LOC 2125Z 043DEG 10KT 3510 8361
LANESpecial weather statement, Jun 11, 4:33 PM EST, 18 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
533 PM EDT MON JUN 11 2018
NCZ062-112200-
Macon NC-
533 PM EDT MON JUN 11 2018
...A STRONG THUNDERSTORM WILL IMPACT UNTIL 600 PM EDT...
At 533 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles southeast of Andrews, or near Nantahala Lake, moving southeast
at 5 mph.
Locations to be impacted include...
Nantahala Lake.
Wind gusts up to 50 mph and half inch hail will be possible in these
areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Nantahala 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 3518 8373 3520 8370 3516 8363 3514 8365
3515 8365 3516 8366 3515 8366 3516 8367
3515 8372 3515 8374
TIME...MOT...LOC 2133Z 317DEG 5KT 3516 8371
LANE