Isolated thunderstorms developed again today during the afternoon and evening hours as a boundary lingered across the region. A few of the storms produced damaging thunderstorm wind.
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.
Isolated thunderstorms developed again today during the afternoon and evening hours as a boundary lingered across the region. A few of the storms produced damaging thunderstorm wind.
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 Aug 19, 2:15 PM EST, 4 hours 10 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 315 PM EDT FRI AUG 19 2011 .SHORT TERM...(TONIGHT THROUGH SUNDAY)...WEAK FRONTAL BOUNDARY OVER THE OHIO RIVER VALLEY WILL LOSE IDENTITY THROUGH TOMORROW. BETTER DEFINED COLD FRONT TAKING SHAPE NW OF THE AREA WILL SLIDE SE INTO THE EAST TN VALLEY BY SUNDAY. WEAK SHORT WAVE ENERGY ALOFT WILL MOVE SE THROUGH THE AREA TONIGHT. ONGOING SCATTERED CONVECTION WILL MOVE THROUGH REGION THIS EVENING AND TONIGHT. UPPER RIDGING BUILDS INTO THE AREA FROM THE WEST ON SATURDAY. AIRMASS SHOULD BE SOMEWHAT CAPPED SO CONVECTION COVERAGE EXPECTED TO BE ISOLATED. PRE-FRONTAL CONVECTION LIKELY TO BE WELL ORGANIZED ON SUNDAY AS IT MOVES INTO THE AREA. MOS GUIDANCE REMAINS RELATIVELY LOW FOR SUNDAY AND POPS MAY HAVE TO BE INCREASED WITH LATER PACKAGES. TEMPERATURES REMAIN A FEW DEGREES ABOVE NORMAL AND LEANED TOWARD HIGH END OF GUIDANCE. .LONG TERM...(SUNDAY NIGHT THROUGH FRIDAY)...A FRONT ENTERS THE REGION ON SUNDAY NIGHT AND LINGERS INTO MONDAY. WILL KEEP THE CHANCE POPS GOING. DRY WEATHER RETURNS ON TUESDAY. ANOTHER FRONT ENTERS THE REGION ON WEDNESDAY AND LINGERS INTO THURSDAY. WILL KEEP CHANCE POPS GOING FOR BOTH DAYS. THE FRONT MAY LINGER INTO EARLY FRIDAY. BUT STILL SOME UNCERTAINTY ON TIMING...KEPT FRIDAY DRY FOR NOW. STAYED NEAR MEX/HPC GUIDANCE FOR TEMPERATURES. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 71 95 73 93 71 / 30 20 20 50 30 KNOXVILLE MCGHEE TYSON AIRPORT, TN 69 93 71 91 69 / 30 20 20 50 30 OAK RIDGE, TN 69 93 71 90 68 / 30 20 20 50 30 TRI CITIES AIRPORT, TN 62 90 64 88 63 / 40 20 20 50 40 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && SON/GH
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 532 AM EDT FRI AUG 19 2011 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-200945- 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- 532 AM EDT FRI AUG 19 2011 /432 AM CDT FRI AUG 19 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. HOWEVER...AN ISOLATED STRONG THUNDERSTORM WILL BE POSSIBLE BY THIS AFTERNOON OR EVENING. GUSTY WINDS UP TO 45 MPH AND LOCALLY HEAVY RAINS WILL BE THE MAIN CONCERNS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS UNLIKELY AT THIS TIME. TG
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 259 PM EDT FRI AUG 19 2011 TNZ085-100>102-191945- BRADLEY TN-EAST POLK TN-MCMINN TN-WEST POLK TN- 259 PM EDT FRI AUG 19 2011 ...SIGNIFICANT WEATHER ADVISORY FOR POLK...MCMINN AND BRADLEY COUNTIES UNTIL 345 PM EDT... AT 254 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR CHARLESTON...OR 8 MILES NORTHEAST OF CLEVELAND...MOVING SOUTHEAST AT 10 MPH. SMALL HAIL AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...BENTON... WATERVILLE...FLINT SPRINGS...DENTVILLE...RELIANCE...PARKSVILLE... ARCHVILLE...CONASAUGA AND GAP SPRINGS. 17
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 411 PM EDT FRI AUG 19 2011 TNZ013-036>038-069-070-192115- ANDERSON TN-CAMPBELL TN-GRAINGER TN-JEFFERSON TN-KNOX TN-UNION TN- 411 PM EDT FRI AUG 19 2011 ...SIGNIFICANT WEATHER ADVISORY FOR KNOX...EXTREME WESTERN JEFFERSON...EXTREME WESTERN GRAINGER...CAMPBELL...EASTERN ANDERSON AND UNION COUNTIES UNTIL 515 PM EDT... AT 412 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 9 MILES WEST OF MAYNARDVILLE...MOVING SOUTHEAST AT 5 MPH. SMALL HAIL IS EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...MAYNARDVILLE... PAULETTE...MALONEYVILLE...HALLS...MASCOT AND BLAINE. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES PRIMARY KILLERS ASSOCIATED WITH THUNDERSTORMS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. DH
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 552 PM EDT FRI AUG 19 2011 TNZ012-035-036-067-192245- ANDERSON TN-MORGAN TN-ROANE TN-SCOTT TN- 552 PM EDT FRI AUG 19 2011 ...SIGNIFICANT WEATHER ADVISORY FOR MORGAN...EXTREME WESTERN ANDERSON...EXTREME SOUTHERN SCOTT AND ROANE COUNTIES UNTIL 645 PM EDT... AT 548 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 9 MILES NORTHWEST OF WARTBURG...MOVING EAST AT 10 MPH. SMALL HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...WARTBURG... SUNBRIGHT...PETROS...OAKDALE...DEARMOND AND ROSEDALE. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES PRIMARY KILLERS ASSOCIATED WITH THUNDERSTORMS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. LOCALLY HEAVY RAINS...IN EXCESS OF ONE INCH PER HOUR...MAY OCCUR WITH THESE THUNDERSTORMS. MOTORISTS SHOULD BE ALERT FOR PONDING OF WATER ON ROADWAYS...AND POSSIBLE MINOR FLOODING OF LOW LYING AREAS. DO NOT DRIVE THROUGH WATERS OF UNKNOWN DEPTH. TURN AROUND! DON'T DROWN! DH
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 647 PM EDT FRI AUG 19 2011 TNZ012>014-035>037-067-069-192345- ANDERSON TN-CAMPBELL TN-CLAIBORNE TN-KNOX TN-MORGAN TN-ROANE TN-SCOTT TN-UNION TN- 647 PM EDT FRI AUG 19 2011 ...SIGNIFICANT WEATHER ADVISORY FOR MORGAN...KNOX...CLAIBORNE... CAMPBELL...ANDERSON...UNION...SCOTT AND ROANE COUNTIES UNTIL 745 PM EDT... AT 648 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES EAST OF PINE KNOT TO 8 MILES SOUTHEAST OF HUNTSVILLE TO 7 MILES NORTH OF KINGSTON...AND MOVING EAST SOUTHEAST AT 10 MPH. SMALL HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS. LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...OAK RIDGE...LA FOLLETTE...CLINTON...KNOXVILLE...MAYNARDVILLE...OLIVER SPRINGS... JACKSBORO...FARRAGUT...KETCHEN...SMOKEY JUNCTION...ROSEDALE...ROYAL BLUE...ELK VALLEY...BRADBURY...CARYVILLE...JELLICO...DISNEY...LAKE CITY...FINCASTLE AND WHITE OAK. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES PRIMARY KILLERS ASSOCIATED WITH THUNDERSTORMS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. LOCALLY HEAVY RAINS...IN EXCESS OF ONE INCH PER HOUR...MAY OCCUR WITH THESE THUNDERSTORMS. MOTORISTS SHOULD BE ALERT FOR PONDING OF WATER ON ROADWAYS...AND POSSIBLE MINOR FLOODING OF LOW LYING AREAS. DO NOT DRIVE THROUGH WATERS OF UNKNOWN DEPTH. TURN AROUND! DON'T DROWN! DH
The Knoxville radar (KMRX), 101 km away, was scanning. The volume nearest the first event began at 23:24 UTC.
2 thunderstorm wind. Local standard time, as filed.
Law enforcement personnel reported a tree downed on a vehicle by thunderstorm wind in the Huntsville area.
Law enforcement personnel reported a few trees downed by thunderstorm wind on Greene Lane and Melvin Hollow Road near La Follette.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2011Every state in 2011This day in weather historyWarnings in Tennessee, August 2011
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: 339687, 339688.