An isolated thunderstorm formed during the early afternoon hours across the Tennessee Valley resulting in a few downed trees.
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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.
An isolated thunderstorm formed during the early afternoon hours across the Tennessee Valley resulting in a few downed trees.
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 Jul 18, 12:16 PM EST, 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 116 PM EDT SAT JUL 18 2015 .AVIATION... TYS WILLHAVE THE GREATEST CHANCE OF SEEING TS THIS AFTERNOON AS STORMS APPROACH FROM THE WEST...SO WILL INCLUDE A TEMPO THERE. TRI MAY SEE SOME STORMS LATER THIS AFTERNOON/EVENING...BUT UNCERTAINTY IS HIGHER. WILL MENTION VCTS THERE. RAIN CHANCES AT CHA APPEAR TOO LOW TO MENTION IN THE TAF AT THIS TIME. ANY PRECIP AT THE TERMINALS WILL MAKE FOG DEVELOPMENT TONIGHT MORE LIKELY...AND SO WILL MENTION MVFR VIS AT TYS AND IFR AT TRI. TIMING OF STORMS TOMORROW IS UNCERTAIN...BUT THE BEST CHANCES APPEAR TO BE AT TRI STARTING AROUND NOON...AND WILL MENTION VCTS AGAIN THERE. && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && DGS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 319 AM EDT SAT JUL 18 2015 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-190730- 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- 319 AM EDT SAT JUL 18 2015 /219 AM CDT SAT JUL 18 2015/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT... ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED TODAY. A FEW OF THESE STORMS MAY BECOME STRONG...WITH BRIEF STRONG GUSTY WINDS AND TORRENTIAL RAINFALL THE MAIN THREATS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY... ...SEVERE THUNDERSTORMS POSSIBLE MONDAY AND TUESDAY... A FRONTAL BOUNDARY WILL MOVE TOWARD THE AREA MONDAY AND TUESDAY. THE AIR-MASS AHEAD OF THE FRONT WILL BE VERY MOIST AND UNSTABLE PRODUCING SCATTERED TO WIDESPREAD THUNDERSTORMS...ESPECIALLY DURING THE AFTERNOON AND EVENING HOURS. SOME OF THESE STORMS COULD BECOME SEVERE WITH THE MAIN CONCERN BEING DAMAGING DOWNBURST WINDS AND TORRENTIAL RAINS WHICH MAY PRODUCING LOCALIZED FLASH FLOODING. A CHANCE OF THUNDERSTORMS WILL REMAIN WEDNESDAY THROUGH FRIDAY... MAINLY DURING THE AFTERNOON AND EVENING. SOME OF THESE STORMS COULD BE STRONG PRODUCING GUSTY WINDS...HEAVY RAINS...AND FREQUENT LIGHTNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED MONDAY AND TUESDAY MAINLY DURING THE AFTERNOON AND EVENING HOURS.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
112 PM EDT SAT JUL 18 2015
TNZ036-069-181800-
KNOX TN-ANDERSON TN-
112 PM EDT SAT JUL 18 2015
SIGNIFICANT WEATHER ADVISORY FOR KNOX...AND ANDERSON COUNTIES UNTIL
200 PM EDT...
AT 111 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
CLINTON. THIS STORM WAS NEARLY STATIONARY.
NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.
LOCATIONS IMPACTED INCLUDE...
KNOXVILLE...OAK RIDGE...CLINTON...FARRAGUT...OLIVER SPRINGS...
LOUISVILLE...HALLS...KARNS...BEARDEN AND POWELL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
&&
LAT...LON 3585 8413 3585 8415 3584 8414 3596 8430
3608 8436 3618 8419 3612 8382 3584 8407
3585 8409 3583 8412
TIME...MOT...LOC 1711Z 344DEG 2KT 3606 8419
JWThe Knoxville radar (KMRX), 66 km away, was scanning. The volume nearest the first event began at 17:32 UTC.
1 thunderstorm wind. Local standard time, as filed.
Several trees were reported down off West Wolf Valley Road in Clinton.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2015Every state in 2015This day in weather historyWarnings in Tennessee, July 2015
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: 582297.