Repeat convection along a slow moving frontal boundary over a lengthy period generated wind damage and flash flooding across Southeast Tennessee from the evening hours into the following morning.
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.
Repeat convection along a slow moving frontal boundary over a lengthy period generated wind damage and flash flooding across Southeast Tennessee from the evening hours into the following morning.
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 27, 2:47 PM EST, 1 hour 51 minutes earlier.
Area Forecast Discussion National Weather Service Morristown TN 347 PM EDT Wed Jun 27 2018 .SHORT TERM...(Tonight and Thursday)...Another day of waves of storms today. After these latest waves much of our airmass is pretty worked over, except for SW areas. Another wave or two due to move through this evening and overnight. Some models also show another wave moving through the southern parts of the area Thursday afternoon in NW flow. Best risk of severe this evening will be over these SW areas, where the higher theta-e air still exists, where as farther northeast temps are in the 70s over a good part of the area now. With the chaotic nature of the storms will have low-res (12- hour) timing of POPs. Temps tonight and Thursday should be close to persistence, but will some locally cooler Max Temps due to early convection and clouds. .LONG TERM...(Thursday night through Tuesday)... The ridge will finally begin to lessen the rain chances beginning shortly after sunset Thursday evening. The price to pay will be warmer daytime high temperatures, though - along with a few, mainly afternoon showers and thunderstorms possible across the southern half of the forecast area on Friday. In fact, afternoon showers and thunderstorms will remain possible through the weekend and into the middle of next week. The ridge shifts east Saturday night and a trough digs into the Great Lakes Region. Additional shortwaves combined with instability over the area will bring the highest chance of showers and thunderstorms on Sunday and Monday. Upper flow weakens on Tuesday and Wednesday but isolated showers and storms will remain possible. The warmest days will occur on Friday and Saturday when temperatures will generally be in the lower 70s in the mornings to lower 90s in the afternoon. Slightly cooler temperatures will occur through the remainder of the week...but not that much cooler - lower 70s to upper 80s. && .PRELIMINARY POINT TEMPS/POPS... Chattanooga Airport, TN 72 89 71 91 / 60 60 40 30 Knoxville McGhee Tyson Airport, TN 71 87 70 91 / 70 60 30 20 Oak Ridge, TN 71 88 70 92 / 70 50 30 20 Tri Cities Airport, TN 68 85 65 89 / 70 30 10 10 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...None. TN...None. VA...None. && GM/AC
Hazardous Weather Outlook National Weather Service Morristown TN 355 PM EDT Wed Jun 27 2018 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-282000- 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- 355 PM EDT Wed Jun 27 2018 /255 PM CDT Wed Jun 27 2018/ This Hazardous Weather Outlook is for portions of Southwest North Carolina...East Tennessee and Southwest Virginia. .DAY ONE...This Afternoon and Tonight Additional showers and thunderstorms are expected once again across the region. A few of these storms may become strong or severe, producing damaging winds, hail and heavy rainfall with localized flash flooding possible. Best chances this evening and overnight will be south and west of Knoxville. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed today and tonight.
Special Weather Statement
National Weather Service Morristown TN
102 PM EDT WED JUN 27 2018
TNZ082-083-271745-
Rhea TN-Bledsoe TN-
102 PM EDT WED JUN 27 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN RHEA AND BLEDSOE
COUNTIES UNTIL 145 PM EDT/1245 PM CDT/...
At 102 PM EDT/1202 PM CDT/, Doppler radar was tracking a strong
thunderstorm near Pikeville, moving southeast at 20 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Dayton, Pikeville, Graysville, Evensville, Fall Creek Falls State
Park, Brayton, Old Washington, Mount Crest and Old Cumberland.
LAT...LON 3572 8526 3573 8527 3577 8524 3560 8479
3555 8485 3555 8488 3552 8488 3546 8495
3546 8496 3547 8498 3545 8498 3543 8505
3544 8506 3543 8510 3546 8511 3545 8515
3545 8517 3539 8520 3556 8541
TIME...MOT...LOC 1702Z 300DEG 19KT 3566 8522Special Weather Statement
National Weather Service Morristown TN
144 PM EDT WED JUN 27 2018
TNZ082>084-099-271830-
Rhea TN-Bledsoe TN-Hamilton TN-Meigs TN-
144 PM EDT WED JUN 27 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN RHEA...BLEDSOE...
CENTRAL MEIGS AND NORTH CENTRAL HAMILTON COUNTIES UNTIL 230 PM
EDT/130 PM CDT/...
At 144 PM EDT/1244 PM CDT/, Doppler radar was tracking a strong
thunderstorm near Pikeville, moving southeast at 10 mph.
Half inch hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Dayton, Pikeville, Decatur, Graysville, Flat Top Mountain, Mount
Crest, Evensville, Sale Creek, Palio, Fall Creek Falls State Park,
Brayton, Old Washington and Old Cumberland.
LAT...LON 3531 8520 3535 8523 3537 8525 3557 8541
3568 8530 3564 8493 3553 8480
TIME...MOT...LOC 1744Z 318DEG 8KT 3557 8517Special Weather Statement
National Weather Service Morristown TN
145 PM EDT WED JUN 27 2018
NCZ060-061-271830-
Clay NC-Cherokee NC-
145 PM EDT WED JUN 27 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CHEROKEE AND CLAY
COUNTIES UNTIL 230 PM EDT...
At 145 PM EDT, Doppler radar was tracking a strong thunderstorm near
Murphy, moving east at 15 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Murphy, Hayesville, Shooting Creek, Tusquitee and Brasstown.
LAT...LON 3507 8409 3519 8371 3516 8374 3515 8373
3515 8372 3516 8368 3499 8363 3499 8406
TIME...MOT...LOC 1745Z 256DEG 14KT 3501 8398Special Weather Statement
National Weather Service Morristown TN
210 PM EDT WED JUN 27 2018
TNZ084-085-099-100-271900-
Bradley TN-Hamilton TN-Meigs TN-McMinn TN-
210 PM EDT WED JUN 27 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN BRADLEY...MEIGS...
CENTRAL MCMINN AND NORTHEASTERN HAMILTON COUNTIES UNTIL 300 PM EDT...
At 210 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Decatur to 8 miles southeast of Dayton to
9 miles northeast of Soddy-Daisy. Movement was southeast at 20 mph.
Winds in excess of 40 mph will be possible with these storms.
Locations impacted include...
Cleveland, Athens, Decatur, Charleston, Englewood, Calhoun,
Riceville, Hillsview, Clear Water, Hopewell, Big Spring, Sale Creek
and Birchwood.
LAT...LON 3515 8500 3538 8512 3542 8503 3541 8501
3545 8496 3544 8494 3544 8491 3548 8490
3550 8486 3552 8487 3555 8483 3555 8480
3557 8480 3558 8479 3546 8446 3527 8465
3527 8467 3525 8469
TIME...MOT...LOC 1810Z 313DEG 16KT 3549 8478 3541 8490 3535 8504
CEDThe Knoxville radar (KMRX), 109 km away, was scanning. The volume nearest the first event began at 21:38 UTC.
15 thunderstorm wind, 6 flash flood. Local standard time, as filed.
A few trees were reported down four miles west northwest of Philadelphia.
Two trees were reported down.
A large tree was reported down on Legget Road in Sale Creek.
A few trees were reported down on power lines on Back Valley Road.
Prolonged road closure on US 58 at the intersection of Lamontville Rd.
A few trees were reported down near Burrville.
Trees and power lines were reported down in several locations across the county.
A few trees were reported down.
Several flooded roadways across the county.
Several trees were reported down.
Several trees were reported down.
Flooded roadway along Decatur Hwy south of Kingston.
A few trees were reported down.
Flooding in the GSMNP near the Elkmont area.
Water covering Hwy 127 south of Pikeville. Rockfort Creek Bridge near the hospital was closed.
Flooding reported across the county.
Several trees were reported down.
Several trees were reported down across the northern half of the county.
A few trees were reported down.
Two trees and a few power lines were reported down.
Several trees were reported down on South Pittsburg Mountain.
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: 755057, 755058, 755059, 755060, 772519, 755061, 755062, 755063, 772520, 755064, 755065, 772521, 755066, 772522, 772524, 772525, 755067, 755068, 755069, 755070, 755071.