A closed low provided weak height falls, marginal lapse rates in an otherwise not noteworthy environment supportive of a couple of severe thunderstorms.
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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 closed low provided weak height falls, marginal lapse rates in an otherwise not noteworthy environment supportive of a couple of severe thunderstorms.
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 13, 1:13 PM EST, 4 hours 2 minutes earlier.
Area Forecast Discussion National Weather Service Morristown TN 213 PM EDT Fri Jun 13 2025 ...New SHORT TERM, LONG TERM... .SHORT TERM... (This evening through Saturday night) Issued at 212 PM EDT Fri Jun 13 2025 Key Messages: 1. Scattered storms continue overnight. Gusty winds and isolated flooding from heavy downpours are the main impacts. 2. Saturday will be similar to today, with mainly afternoon showers and thunderstorms that could produce gusty winds and heavy downpours. Discussion: A warm, moist air mass will continue over the region over the next 24-36 hours, with PW values on the order of 1.6-1.8 inches. The main forcing feature that will bring enhanced rain chances will be a closed low over the Mid MS Valley this evening that will slowly move east across the lower OH Valley through Saturday night. The first wave of forcing ahead of this system is currently driving showers and storms in Middle TN, and this is expected to affect our area late this afternoon and evening, until around midnight. The severe threat looks low given the lack of shear, but storms will be efficient rain producers that can drop a half to one inch of rain in an hour or so. Isolated wind gusts are possible in the Plateau, but should be sub-severe levels. Saturday and Saturday night looks pretty similar to today/tonight, with afternoon heating leading to isolated/scattered showers/storms, followed by higher rain chances in the late afternoon/evening as the upper low draws closer and brings slightly cooler temperatures aloft and low to midlevel convergence. Heavy downpours and gusty winds at mainly sub-severe levels will be the main hazard again. Storms will likely persist well into Saturday night as the upper trough moves over the area. && .LONG TERM... (Sunday through next Friday) Issued at 212 PM EDT Fri Jun 13 2025 Key Messages: 1. Unsettled and active weather expected. 2. A few strong storms are possible mainly each afternoon with peak heating. Gusty winds and heavy rainfall are the main concerns. 3. With above normal moisture available, several inches of rain will likely occur in some locations over the period. Isolated flash flooding is possible in areas that see repeated or prolonged periods of heavy rainfall. Discussion: An unsettled long term period is expected through at least Thursday, with multiple upper level short waves moving across the region in a moisture rich environment. While timing of these waves is uncertain as is generally the case for longer range forecasts, the greatest coverage of showers and storms is most likely to be during the afternoon hours coinciding with peak heating. The risk for organized severe weather looks low during the period, as shear is expected to be weak. Models do hint at the possibility of drier air beginning to move in for Friday, which would lower the chances for convection by the end of the period. Hazards and Impacts: A few strong storms will be possible any given day during the afternoon and early evening hours. While an isolated severe storm is possible at some point in the next 7 days, most storms are expected to remain below severe strength. Any stronger storms that do occur will be capable of producing strong and gusty winds. Locally heavy rainfall that may lead to isolated flash flooding is of more concern. GEFS ensemble mean PW values are generally in the 1.5 to 1.75 inch range during the period, which is above normal generally falling in the 75th to 90th percentile based on BNA sounding climo for this time of year. A few locations may see in excess of 3 or even 4 inches of rainfall through the long term period, while most locations will see less due to the unorganized and scattered nature of the convection. While narrowing down the areas that will see the higher precipitation amounts is not possible this far out, everyone should be alert for the threat of flooding especially in areas that receive multiple or prolonged rounds of heavy rainfall. && .AVIATION... (18Z TAFS) Issued at 123 PM EDT Fri Jun 13 2025 Showers remain isolated across East TN so far, but coverage is expected to increase later in the afternoon and evening. The most likely period for showers/storms to affect the TAF sites is 22Z-04Z, as a large band of showers in Middle TN moves east. Low clouds and/or fog may develop late in the night, but confidence is low and depends on how much rain falls this evening. && .PRELIMINARY POINT TEMPS/POPS... Chattanooga Airport, TN 70 85 69 86 / 60 80 70 80 Knoxville McGhee Tyson Airport, TN 68 85 68 83 / 60 80 80 90 Oak Ridge, TN 68 83 68 82 / 60 80 70 90 Tri Cities Airport, TN 67 83 67 81 / 30 60 70 90 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && SHORT TERM...DGS AVIATION...DGS
Hazardous Weather Outlook...UPDATED National Weather Service Morristown TN 214 PM EDT Fri Jun 13 2025 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-141815- 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-Northwest 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 VA-Russell-Washington VA- 214 PM EDT Fri Jun 13 2025 /114 PM CDT Fri Jun 13 2025/ This Hazardous Weather Outlook is for portions of southwest North Carolina...east Tennessee and southwest Virginia. .DAY ONE...This Afternoon and Tonight Showers and storms are expected late this afternoon into the evening hours. A few stronger storms are possible and could produce gusty winds and localized flooding due to heavy downpours. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Daily showers and storms each afternoon and evening may lead to localized flooding issues. Some storms may have strong and gusty winds. .SPOTTER INFORMATION STATEMENT... Spotter activation is not needed at this time.
Special Weather Statement
National Weather Service Morristown TN
435 PM CDT Fri Jun 13 2025
TNZ098-132215-
Marion TN-
435 PM CDT Fri Jun 13 2025
...A STRONG THUNDERSTORM WILL IMPACT MARION COUNTY THROUGH 515 PM
CDT...
At 435 PM CDT, Doppler radar was tracking a strong thunderstorm 10
miles south of Cowan, or 14 miles west of Bridgeport, moving
northeast at 30 mph.
HAZARD...Wind gusts up to 50 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Jasper, South Pittsburg, Whitwell, Kimball, Monteagle, Powells
Crossroads, Orme, Martin Springs, Fiery Gizzard State Park, and
Chimneys State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3524 8584 3524 8582 3522 8577 3522 8574
3524 8569 3529 8571 3529 8569 3531 8565
3531 8562 3511 8543 3498 8569 3499 8586
3522 8586 3522 8587
TIME...MOT...LOC 2135Z 225DEG 26KT 3502 8596
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
BWSpecial Weather Statement
National Weather Service Morristown TN
546 PM EDT Fri Jun 13 2025
TNZ070-073-132230-
Jefferson TN-North Sevier TN-
546 PM EDT Fri Jun 13 2025
...A STRONG THUNDERSTORM WILL IMPACT CENTRAL JEFFERSON AND
NORTHWESTERN SEVIER COUNTIES THROUGH 630 PM EDT...
At 546 PM EDT, Doppler radar was tracking a strong thunderstorm over
Sevierville, moving northeast at 20 mph.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Sevierville, Jefferson City, Dandridge, McMahan, Piedmont, and Kodak.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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 3591 8370 3614 8346 3598 8328 3596 8328
3584 8358
TIME...MOT...LOC 2146Z 225DEG 18KT 3592 8357
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
BWThe Knoxville radar (KMRX), 16 km away, was scanning. The volume nearest the first event began at 22:12 UTC.
2 thunderstorm wind. Local standard time, as filed.
Several trees were blown down by severe thunderstorm wind gusts.
Several trees were blown down by severe thunderstorm wind gusts.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2025Every state in 2025This day in weather historyWarnings in Tennessee, June 2025
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: 1274431, 1274432.