A mesoscale convective system moved through the Southern Appalachian region during the afternoon hours generating a relatively widespread pattern of wind damage affecting Southwest Virginia, Tennessee, and Southwest North Carolina.
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 MRX wrote it up.
A mesoscale convective system moved through the Southern Appalachian region during the afternoon hours generating a relatively widespread pattern of wind damage affecting Southwest Virginia, Tennessee, and Southwest North Carolina.
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 Morristown, TN wrote its last area forecast discussion before the first event at Jun 22, 1:03 PM CST, 22 minutes earlier.
Area Forecast Discussion National Weather Service Morristown TN 303 PM EDT Fri Jun 22 2018 .SHORT TERM...(Tonight and Saturday)... Ongoing shower and thunderstorm cluster was occurring over northeast Alabama quickly approaching the Sequatchie Valley and southern Tennessee Valley. Other scattered showers and thunderstorms were developing over the remainder of forecast area this afternoon. Over the past hour or so, the storms have been showing signs of weakening. Will continue to monitor. Should they re-initiate and become stronger with the main jet moving overhead, impacts will occur first over the southwest forecast area (mentioned above) with the ongoing activity. The threat of severe weather will begin to subside by 9 PM for most locations. The exception would be the foothills/mountains. After midnight a few lingering showers will be possible extending into early Saturday morning. Some patchy fog will also be likely along creeks/rivers and other locations that receive rainfall. The region continues to be under the influence of the upper low and associated trough. Thus, another wave of scattered showers and thunderstorms will be possible mainly Saturday afternoon. .LONG TERM...(Saturday night through Friday)...A weak frontal boundary will be lingering over the region during the early part of the long term period. This, along with some weak mid/upper level short wave energy moving through the jet, which will be suppressed further south than usual for this time of year, should bring some rounds of showers and thunderstorms to the area at times through the weekend. With the significant flow aloft, there is enough low level shear to warrant continuing to mention possibility of severe storms in the HWO for both days. By Monday into Tuesday the upper/mid level ridge will be building over the area, so will carry mainly low chance/slight chance PoPs. Models not in great agreement late in the period, but a short wave looks likely to be affecting the area on Wednesday, with the ridge building again Thursday/Friday. Will have chance PoPs for showers/thunderstorms all three days, with the highest PoPs on Wednesday. && .PRELIMINARY POINT TEMPS/POPS... Chattanooga Airport, TN 69 87 72 90 / 50 60 40 40 Knoxville McGhee Tyson Airport, TN 67 86 70 88 / 40 40 60 60 Oak Ridge, TN 68 86 71 88 / 40 50 60 60 Tri Cities Airport, TN 65 83 67 86 / 60 50 50 60 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...None. TN...None. VA...None. && AC/LW
Hazardous Weather Outlook National Weather Service Morristown TN 304 PM EDT Fri Jun 22 2018 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-231915- Cherokee-Clay-Scott TN-Campbell-Claiborne-Hancock-Hawkins- Sullivan-Johnson-Morgan-Anderson-Union-Grainger-Hamblen- Northwest Cocke-Cocke Smoky Mountains-Northwest Greene- Southeast Greene-Washington TN-Unicoi-Northwest Carter- Southeast Carter-Roane-Loudon-Knox-Jefferson-NW Blount- Blount Smoky Mountains-North Sevier-Sevier Smoky Mountains- Sequatchie-Bledsoe-Rhea-Meigs-McMinn-Northwest Monroe- Southeast Monroe-Marion-Hamilton-Bradley-West Polk-East Polk-Lee- Wise-Scott-Russell-Washington- 304 PM EDT Fri Jun 22 2018 /204 PM CDT Fri Jun 22 2018/ This Hazardous Weather Outlook is for portions of Southwest North Carolina...East Tennessee and Southwest Virginia. .DAY ONE...This Afternoon and Tonight Strong to severe storms will be possible late this afternoon and evening. Damaging winds will be the main threat with these storms. Hail up to quarter size will also be possible. .DAYS TWO THROUGH SEVEN...Saturday through Thursday A few strong to marginally severe storms will also be possible Saturday and Sunday afternoons. Damaging winds will be the main threat with these storms. Hail up to quarter size will also be possible. Heavy rainfall will also lead to localized flash flooding especially in areas of poor drainage. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon.
Special Weather Statement
National Weather Service Morristown TN
218 PM EDT FRI JUN 22 2018
TNZ013-036-067-221900-
Anderson TN-Roane TN-Campbell TN-
218 PM EDT FRI JUN 22 2018
...SIGNIFICANT WEATHER ADVISORY FOR ANDERSON...SOUTH CENTRAL CAMPBELL
AND NORTHEASTERN ROANE COUNTIES UNTIL 300 PM EDT...
At 218 PM EDT, Doppler radar was tracking a strong thunderstorm over
Oliver Springs, or near Oak Ridge, moving northeast at 35 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Oak Ridge, Clinton, Oliver Springs, Caryville, Lake City, Norris,
Disney, Cove Lake State Park and Coalfield.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3615 8401 3593 8433 3601 8441 3605 8436
3605 8434 3610 8439 3631 8421
TIME...MOT...LOC 1818Z 226DEG 31KT 3604 8433Special Weather Statement
National Weather Service Morristown TN
220 PM EDT FRI JUN 22 2018
TNZ013-014-221900-
Claiborne TN-Campbell TN-
220 PM EDT FRI JUN 22 2018
...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL CLAIBORNE AND
CENTRAL CAMPBELL COUNTIES UNTIL 300 PM EDT...
At 220 PM EDT, Doppler radar was tracking a strong thunderstorm near
Jacksboro, or 7 miles southwest of La Follette, moving northeast at
35 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
La Follette, Jacksboro, Caryville, Fincastle, White Oak and Cove Lake
State Park.
LAT...LON 3643 8379 3643 8381 3642 8383 3643 8386
3642 8388 3643 8389 3639 8392 3640 8395
3638 8396 3628 8425 3632 8433 3634 8433
3658 8401
TIME...MOT...LOC 1820Z 234DEG 30KT 3632 8425The Northeast Alabama radar (KHTX), 42 km away, was scanning. The volume nearest the first event began at 19:24 UTC.
9 thunderstorm wind. Local standard time, as filed.
Four trees were reported down two miles norhteast of New Hope.
A few trees were reported down one half mile east of Melvine.
Two trees were reported down five miles northeast of Philadelphia.
Trees and power lines were reported down in the eastern part of Knoxville.
Numerous trees were reported down with many homes damaged by falling limbs. One home was destroyed by the combination of falling trees and limbs.
Several trees were reported down in Oneida.
A few trees were reported down in Oneida.
Numerous trees and power lines were reported down and there was a partial collapse of a building near the intersection of Old Washington Highway and Shipley Lane; two miles east northeast of Dayton.
A few trees were reported down two miles south of Chestnut Hill.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2018Every state in 2018This day in weather historyWarnings in Tennessee, 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: 755023, 755024, 755025, 755026, 755027, 755028, 755029, 755030, 755031.