A few storms became severe in a strongly unstable environment ahead of a cold front during the afternoon. The storms produced a couple reports of small hail but, the main impact was from a few reports of damaging winds gusts along with some localized flooding.
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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 few storms became severe in a strongly unstable environment ahead of a cold front during the afternoon. The storms produced a couple reports of small hail but, the main impact was from a few reports of damaging winds gusts along with some localized flooding.
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 3, 1:47 PM EST, 13 minutes earlier.
Area Forecast Discussion National Weather Service Morristown TN 247 PM EDT Sun Jun 3 2018 .SHORT TERM...(Tonight and Monday)... The focus of the short-term forecast will be on the cold front approaching from the west. Current radar imagery indicates a line of showers and storms developing along this boundary across the Cumberland Plateau. Temperatures are in the the low to mid 80s with dewpoints in the upper 60s and low 70s, producing SBCAPE values of 1500-2500 J/Kg across the region. The main upper level trough is well to the north across the Great Lakes but 0-6 bulk shear values are around 20-30 kts. Seeing a minor increase in PW values ahead of the boundary with some low-level convergence. PW values range from around 1.4-1.6 inches, which is around the 50th-75th percentile for early June. Forecast thinking has not really changed from previous, expect there will be a few strong to marginally severe storms this afternoon through about 6pm. Damaging winds, hail up to quarter size, and localized flash flooding from heavy rainfall will be the main impacts. Models all indicate that the front will move through rather quickly this afternoon and evening with dry air moving in overnight. Dewpoints are currently in the upper 50s to low 60s across W TN. Temperatures will be noticeably cooler tonight with lows in the mid 50s to low 60s. The drier air and winds around 5-10 mph should prevent any widespread fog formation tonight. A beautiful day is forecast on Monday with dewpoints in the 50s highs in the upper 70s and low 80s with no rain chances. .LONG TERM...(Monday night through Saturday)... Dry northwesterly flow will continue over the Southern Appalachian Region Monday night into Tuesday for continued dry conditions and normal to slightly below normal seasonal temperatures. Tuesday night...a broad...weakening boundary will settle south and into our northern areas. There may be enough moisture and lift associated with the boundary to generate a few isolated showers...possibly with a stray rumble of thunder. By Wendesday...the boundary should weaken just enough to minimize the chance of convection but should still generate a few bands of clouds...so expect a mainly dry day. Model and run consistency becomes rather poor through the rest of the extended and confidence is low. The current tend is towards a dry Thursday. Friday is shaping up to be a transition day with the next system moving into the region for the weekend. && .PRELIMINARY POINT TEMPS/POPS... Chattanooga Airport, TN 61 84 60 85 / 0 0 0 10 Knoxville McGhee Tyson Airport, TN 60 82 57 82 / 10 0 0 10 Oak Ridge, TN 59 82 57 83 / 0 0 0 10 Tri Cities Airport, TN 55 78 54 79 / 10 0 0 10 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...None. TN...None. VA...None. && MA/MJB
Hazardous Weather Outlook National Weather Service Morristown TN 313 AM EDT Sun Jun 3 2018 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-040715- 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- 313 AM EDT Sun Jun 3 2018 /213 AM CDT Sun Jun 3 2018/ This Hazardous Weather Outlook is for portions of Southwest North Carolina...East Tennessee and Southwest Virginia. .DAY ONE...Today and Tonight Scattered to numerous showers and thunderstorms can be expected today as a cold front swings through, especially during the afternoon. Some of these storms may be strong to severe with damaging winds the primary threat. Large hail and localized flooding will also be possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon.
Special Weather Statement
National Weather Service Morristown TN
253 PM EDT SUN JUN 3 2018
TNZ069-071-031945-
Knox TN-NW Blount TN-
253 PM EDT SUN JUN 3 2018
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL KNOX AND NORTH CENTRAL
BLOUNT COUNTIES UNTIL 345 PM EDT...
At 252 PM EDT, Doppler radar was tracking a strong thunderstorm over
Knoxville, moving southeast at 15 mph.
Half inch hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Knoxville, Maryville, Alcoa, Louisville, Rockford, Eagleton Village,
Lake Forest, Bearden, Powell and Seymour.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3576 8397 3599 8412 3610 8397 3590 8377
3590 8378 3589 8378
TIME...MOT...LOC 1852Z 321DEG 11KT 3595 8397
mjbThe Knoxville radar (KMRX), 74 km away, was scanning. The volume nearest the first event began at 19:01 UTC.
2 thunderstorm wind. Local standard time, as filed.
Four trees were reported down in the Pennington Gap vicinity.
One tree was reported down along with some trees limbs in Pennington Gap.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Virginia in 2018Every state in 2018This day in weather historyWarnings in Virginia, 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: 754907, 754903.