Scattered thunderstorms developed across northeast Georgia during the afternoon. One of the storms produced marginally damaging winds in Elbert 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.
Scattered thunderstorms developed across northeast Georgia during the afternoon. One of the storms produced marginally damaging winds in Elbert 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 22, 12:46 PM EST, 35 minutes earlier.
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
146 PM EDT Mon Jun 22 2020
.SYNOPSIS...
Another typical summer day can be expected for today. An approaching
front will impact the area during the middle part of the week,
enhancing the coverage of storms. Drier air filters in from the
north for Thursday through the end of the week.
&&
.NEAR TERM /THROUGH TONIGHT/...
As of 145 PM Monday: Main update for the 18Z TAF issuance along with
minor adjustments made to temperatures/PoPs/sky to coincide with
latest trends as the rest of the near term forecast remains on
track. After a few hours of quiet conditions, storms are beginning
to develop and move into the southwestern portions of the FA attm.
Expect activity to pick up over the next few hours and expand
eastward. Current temperatures range from the low to upper 80s.
Previous discussion: The next 24 hours should be typical classic
summertime weather over the western Carolinas and northeast Georgia.
A short wave ridge should move over the region today that would act
to limit the deep convection...in theory. The HRRR shows less
coverage this afternoon than yesterday, but the other CAMs just
laugh at the upper ridge and develop scattered to numerous showers
and storms during peak heating. Am inclined to follow the other CAMs
until some signal for the suppression of deep convection shows up,
so the fcst will top out with at least a chance of precip
everywhere, but the highest probs over the mtns. As to the severity,
the buoyancy should be a little less today, perhaps topping out in
the 1500-2000 J/kg range, with light shear. However, the guidance
shows a patch of mid-level dry air moving overhead in the afternoon
with excellent sfc-delta theta-e again. What this means is that any
thunderstorm will pose a threat of producing a wet microburst. For
that reason, the Marginal Risk in the new Day 1 Outlook is
warranted. Temps should top out above normal again, but typical for
summer. Most of the convection should die off in the mid/late
evening, but the approach of the next short wave from the west could
either sustain some precip over the wrn parts of the mtns or bring
new precip in from the west in the pre-dawn hours Tuesday. Min temps
will remain mild.
&&
.SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/...
As of 130 AM Mon: A well developed upper trough will shift east
across the mid-upper Mississippi Valley and Great Lakes regions
during the middle of the week. A plume of deep moisture will
precede a weak frontal zone into our area Tuesday, at the leading
edge of the trough. Still seeing a good signal for this feature
to enhance convective coverage; the global models suggest PoP
trends that are essentially diurnal, but the NAM continues to
hint that an MCS may form over East TN and NW GA in the early
morning, crossing the mountains prior to the diurnal peak. Even
in that scenario there would be opportunity for a late afternoon
recovery of instability, so we will maintain a chance PoP over the
mountains thru the morning, but diurnal beyond that. The presence
of the better moisture should mitigate the severe weather threat
via limited lapse rates and theta-e lapses; however, late in the
day, the moisture plume will begin to exit to the south and east,
and drier air will be available for storms to produce stronger
downdrafts, so the later activity could produce strong to severe
winds. Low-level lapse rates become rather poor after peak heating,
so a gradual decline in activity should occur. Max temps will be
near climo.
Some of the guidance now indicates westerly downslope flow could
induce enough drying to keep diurnal instability low through
Wednesday, suggesting PoPs mainly in the SE half of the CWA,
nearer the front. This is a marked difference from the previous
cycle. However, both Tue night and Wed the presence of the
trough overhead implies some dynamic lift could occur, and so we
will keep a healthy PoP on Wednesday, though a little lower than
before. Temps will trend down a category or so. Though the lesser
instability Wed may keep severe chances relatively low, there will
be abundant dry air aloft, so any cells that do fire will bear
some damaging wind risk. There continues to be some indication
that a frontal wave may develop to our SW late Wed or Wed night,
which could bring back PoPs following the diurnal decline Wed
evening. Not yet confident enough to reflect this in the fcst,
given that model progs do not bear good consistency in depicting it.
&&
.LONG TERM /THURSDAY THROUGH SUNDAY/...
As of 245 AM Mon: While the global models agree that a shortwave
will rotate through the longer trough on Thursday, there is some
spread in the sensible wx that results for our area. This seems to
result from different handling of the stalled frontal zone just to
our south. The last NAM and Canadian GDPS suggest a frontal wave
will bring early-day PoPs to the CWA, the GFS shows broad precip
spreading over the front, and the ECMWF is dry. Will maintain
fairly low PoPs given the uncertainty and previous depictions
of post-frontal drying occurring at that time. By Friday the
trough should be east of the area, being replaced by a ridge;
below-climo PoPs are warranted Friday, and climo temps. The heat
builds slowly back into the region through the end of the period,
and PoPs tick upward gradually to match.
&&
.AVIATION /18Z MONDAY THROUGH SATURDAY/...
At KCLT and Elsewhere: VFR prevails at the TAF sites this afternoon
with latest radar imagery depicting isolated shra/tsra developing
across the southwestern portions of the FA attm. Expect this
activity to increase in coverage and become scattered across the
area this afternoon and evening with intermittent higher gusts
possible. Anticipate brief periods of MVFR/possible IFR due to areas
of lower cigs and brief periods of reduced vsbys possible in any
heavy downpour or stronger storm. Have noted activity with TEMPO
groups attm. Expect convection to wane tonight allowing for VFR to
prevail. Towards daybreak, areas of fog could allow for flight
restrictions to return, especially at KAVL and the mountain valleys.
On Tuesday, expect VFR with scattered afternoon SHRA/TSRA. Winds
will remain SW through the valid TAF period, 10 to 12 kts during the
day becoming AOB 5 kts overnight.
Outlook: Flight restrictions will be possible each day in any
afternoon/evening thunderstorms, and also in low clouds and fog
around daybreak each morning. Otherwise expect VFR.
Confidence Table...
17-23Z 23-05Z 05-11Z 11-12Z
KCLT High 100% High 100% High 100% High 100%
KGSP High 100% High 100% High 100% High 95%
KAVL High 100% High 100% High 83% High 95%
KHKY High 100% High 100% High 100% High 100%
KGMU High 100% High 100% High 100% High 95%
KAND High 100% High 100% High 100% High 95%
The percentage reflects the number of guidance members agreeing
with the scheduled TAF issuance flight rule category. Complete hourly
experimental aviation forecast consistency tables are available at
the following link:
www.weather.gov/gsp/aviation
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.
&&
SYNOPSIS...PM
NEAR TERM...PM/12
SHORT TERM...08
LONG TERM...08
AVIATION...12Hazardous Weather Outlook National Weather Service Greenville-Spartanburg SC 631 AM EDT Mon Jun 22 2020 GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065- 068>072-082-501>510-SCZ001>014-019-231045- 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 NC- 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-Union SC-Chester-Greenwood- 631 AM EDT Mon Jun 22 2020 This Hazardous Weather Outlook is for northeast Georgia, piedmont North Carolina, western North Carolina and upstate South Carolina. .DAY ONE...Today and tonight. Isolated to scattered thunderstorms are expected to develop again this afternoon and persist into the evening. A few of the storms will produce severe weather, in the form of damaging wind gusts and large hail. Any thunderstorm will be capable of heavy downpours and cloud-to-ground lightning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about observed severe weather to the NWS while following all local, state, and CDC guidelines. 8
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
933 AM EDT MON JUN 22 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0845 PM TSTM WND DMG 2 S GREENVILLE 34.82N 82.38W
06/21/2020 GREENVILLE SC EMERGENCY MNGR
TREES DOWNED THROUGHOUT GREENVILLE COUNTRY CLUB, AT LEAST
ONE ON A HOUSE. TIME ESTIMATED FROM RADAR.
&&Special Weather Statement
National Weather Service Greenville-Spartanburg SC
1253 PM EDT Mon Jun 22 2020
SCZ001-002-221730-
Pickens Mountains SC-Oconee Mountains SC-
1253 PM EDT Mon Jun 22 2020
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN PICKENS AND
NORTHEASTERN OCONEE COUNTIES UNTIL 130 PM EDT...
At 1252 PM EDT, Doppler radar was tracking a strong thunderstorm 11
miles northeast of Walhalla, or near Salem, moving northeast at 20
mph.
Locations to be impacted include...
Salem, Devils Fork State Park, Lake Keowee, Keowee Toxaway State
Park, Jocassee Gorges, Lake Jocassee, Table Rock State Park, Sunset,
Bad Creek and Sassafras Mountain.
Wind gusts up to 40 mph and half inch hail will be possible in these
areas.
LAT...LON 3509 8279 3508 8278 3507 8278 3507 8277
3505 8275 3505 8273 3498 8265 3489 8272
3487 8277 3483 8302 3500 8310
TIME...MOT...LOC 1652Z 245DEG 16KT 3492 8297Special Weather Statement
National Weather Service Greenville-Spartanburg SC
103 PM EDT Mon Jun 22 2020
GAZ010-221745-
Rabun GA-
103 PM EDT Mon Jun 22 2020
...STRONG STORMS WILL IMPACT RABUN COUNTY UNTIL 145 PM EDT...
At 101 PM EDT, Doppler radar was tracking a cluster of strong
thunderstorms from around Clayton west to Lake Burton, moving
northeast at 15 mph.
Wind gusts up to 40 mph and half inch hail 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.
&&
LAT...LON 3491 8363 3492 8360 3494 8360 3495 8355
3498 8355 3500 8351 3500 8310 3499 8310
3493 8313 3493 8316 3488 8321 3488 8324
3482 8327 3482 8331 3472 8335 3475 8343
3473 8347 3474 8354 3482 8359 3483 8366
TIME...MOT...LOC 1701Z 247DEG 12KT 3488 8345Special Weather Statement
National Weather Service Greenville-Spartanburg SC
130 PM EDT Mon Jun 22 2020
NCZ064-SCZ002-003-221815-
Transylvania NC-Pickens Mountains SC-Greenville Mountains SC-
130 PM EDT Mon Jun 22 2020
...A STRONG THUNDERSTORMS WILL IMPACT SOUTHEASTERN TRANSYLVANIA...
NORTHWESTERN GREENVILLE AND NORTH CENTRAL PICKENS COUNTIES UNTIL 215
PM EDT...
At 129 PM EDT, Doppler radar was tracking strong storms 11 miles
south of Brevard, or 4 miles northwest of Table Rock State Park,
moving northeast at 15 mph.
Locations to be impacted include...
Brevard, Rosman, Jones Gap State Park, Dupont State Forest, Table
Rock State Park, Caesars Head State Park, Gorges State Park, Jocassee
Gorges, Pumpkintown and Penrose.
Wind gusts up to 40 mph and half inch hail will be possible in these
areas.
LAT...LON 3514 8294 3532 8264 3530 8262 3529 8262
3529 8261 3526 8262 3526 8260 3521 8260
3515 8259 3515 8257 3516 8255 3503 8251
3495 8275
TIME...MOT...LOC 1729Z 230DEG 14KT 3507 8275Special Weather Statement
National Weather Service Greenville-Spartanburg SC
134 PM EDT Mon Jun 22 2020
SCZ001-221815-
Oconee Mountains SC-
134 PM EDT Mon Jun 22 2020
...A CLUSTER OF THUNDERSTORMS WILL IMPACT OCONEE COUNTY UNTIL 215 PM
EDT...
At 133 PM EDT, Doppler radar indicated the leading edge of a cluster
of thunderstorms along a line extending from 14 miles north of
Walhalla to 10 miles north of Toccoa, and moving east at 30 mph.
Wind gusts up to 40 mph and half inch hail will be possible in these
areas.
LAT...LON 3485 8326 3485 8325 3488 8324 3488 8320
3492 8316 3493 8316 3494 8311 3495 8313
3499 8310 3500 8311 3505 8290 3504 8292
3501 8291 3501 8293 3499 8294 3495 8291
3481 8290 3471 8303 3470 8335
TIME...MOT...LOC 1733Z 252DEG 25KT 3498 8315 3472 8330Special Weather Statement
National Weather Service Greenville-Spartanburg SC
212 PM EDT Mon Jun 22 2020
GAZ029-221845-
Elbert GA-
212 PM EDT Mon Jun 22 2020
...A STRONG THUNDERSTORM WILL IMPACT ELBERT COUNTY UNTIL 245 PM
EDT...
At 211 PM EDT, Doppler radar was tracking a strong thunderstorm 4
miles northwest of Elberton, moving east at 20 mph.
Locations to be impacted include...
Elberton, Middleton, Russell State Park, Lake Russell, Bowman, Dewy
Rose, Rock Branch, Sweet City and Ruckersville.
Wind gusts up to 40 mph and half inch hail will be possible in these
areas.
LAT...LON 3405 8299 3420 8303 3421 8299 3421 8298
3423 8294 3429 8277 3427 8275 3421 8274
3415 8272 3413 8267 3409 8264 3407 8264
3405 8262 3403 8295
TIME...MOT...LOC 1811Z 256DEG 15KT 3414 8293The Greer radar (KGSP), 101 km away, was scanning. The volume nearest the first event began at 18:21 UTC.
1 thunderstorm wind. Local standard time, as filed.
County comms reported trees blown down along Cecchini and Brewers Bridge Rd power lines down along Harmony Rd and more trees down along Anderson Highway.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2020Every state in 2020This day in weather historyWarnings in Georgia, June 2020
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: 905376.