Additional scattered thunderstorms developed on the next day as a frontal boundary lingered over the area. Most of the thunderstorms developed over southeast Tennessee and southwest North Carolina.
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.
Additional scattered thunderstorms developed on the next day as a frontal boundary lingered over the area. Most of the thunderstorms developed over southeast Tennessee and southwest North Carolina. A few of the storm 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 10, 12:45 PM CST, 2 hours 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 245 PM EDT FRI AUG 10 2012 .SHORT TERM (TONIGHT THROUGH SUNDAY NIGHT)...CURRENT SURFACE ANALYSIS SHOWS A COLD FRONT GENERALLY ALONG THE CUMBERLAND PLATEAU/ MOUNTAIN RANGE...WITH A BROKEN LINE OF CONVECTION OCCURRING ALONG IT. MODELS INDICATE THAT THIS COLD FRONT WILL SLOWLY DRIFT THROUGH THE FORECAST AREA BEFORE MIDNIGHT...AS AN UNSEASONABLY STRONG UPPER- LEVEL TROUGH AMPLIFIES OVER THE OHIO AND TN RIVER VALLEYS. THE AXIS OF THIS UPPER-LEVEL TROUGH IS PROGGED TO STILL BE LINGERING OVER THE FORECAST AREA ON SATURDAY...BUT MODEL SOUNDINGS INDICATE A DRY AIR MASS BEHIND THE FRONT WITH A MID-LEVEL STABLE LAYER THAT SHOULD INHIBIT ANY CONVECTIVE DEVELOPMENT. THUS...WILL MENTION A DRY FORECAST FOR SATURDAY AND SUNDAY...WITH DEWPOINTS EXPECTED TO BE NOTICEABLY LOWER THIS WEEKEND...LEADING TO A HINT OF AUTUMN AND LOWER MINS AT NIGHT. AS FOR TEMPS...GFS AND NAM GUIDANCE NUMBERS ARE IN GOOD AGREEMENT THROUGH SUNDAY NIGHT...AND LOOK REASONABLE. .LONG TERM (MONDAY THROUGH FRIDAY)...SURFACE HIGH PRESSURE OVER THE REGION WILL PROVIDE FOR WARM AND DRY CONDITIONS ON MONDAY. A WEAK FRONT WILL MOVE IN MONDAY NIGHT INTO TUESDAY FOR A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. MODEL/RUN DIFFERENCE THROUGH THE REST OF THE EXTENDED HAVE KEPT CONFIDENCE LOW. CURRENT TRENDS SHOW A WEAK FRONT AND DIURNAL HEATING CREATING A SLIGHT CHANCE OF CONVECTION ON WEDNESDAY. BETWEEN SYSTEMS ON THURSDAY. THEN...ANOTHER WEAK SYSTEM MOVING IN AROUND THE FRIDAY TIME FRAME. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 66 85 61 88 63 / 30 10 0 0 0 KNOXVILLE AIRPORT, TN 64 83 60 86 62 / 30 10 0 0 0 OAK RIDGE, TN 64 84 60 87 62 / 30 10 0 0 0 TRI CITIES AIRPORT, TN 61 81 55 84 57 / 30 10 0 0 0 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && DMG/MJB
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MORRISTOWN TN 1025 AM EDT FRI AUG 10 2012 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-111000- 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- 1025 AM EDT (925 AM CDT) FRI AUG 10 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST TENNESSEE...SOUTHWEST VIRGINIA...AND EXTREME SOUTHWEST NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT... A COLD FRONT WILL MOVE THROUGH THE SOUTHERN APPALACHIAN REGION THIS AFTERNOON AND EARLY EVENING...TRIGGERING ADDITIONAL SCATTERED SHOWERS AND THUNDERSTORMS. SOME OF THESE STORMS MAY BECOME STRONG TO SEVERE THIS AFTERNOON AND EVENING...BRINGING THE POSSIBILITY OF DAMAGING WINDS...LARGE HAIL...AND LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1139 AM EDT FRI AUG 10 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0525 PM TSTM WND DMG 4 N EMORY-MEADOW VIEW 36.83N 81.85W
08/09/2012 WASHINGTON VA DEPT OF HIGHWAYS
COUPLE OF TREES DOWN NORTH OF MEADOWVIEW.
&&
JWINTONPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MORRISTOWN TN
1140 AM EDT FRI AUG 10 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1245 PM TSTM WND DMG WHITWELL 35.20N 85.52W
08/09/2012 MARION TN LAW ENFORCEMENT
FEW TREES DOWN IN WHITWELL.
0130 PM TSTM WND DMG 5 N RELIANCE 35.26N 84.57W
08/09/2012 POLK TN LAW ENFORCEMENT
COUPLE OF TREES DOWN NORTH OF RELIANCE.
0155 PM TSTM WND DMG ETOWAH 35.33N 84.53W
08/09/2012 MCMINN TN 911 CALL CENTER
COUPLE OF TREES DOWN AROUND ETOWAH.
0225 PM TSTM WND DMG 2 S WALLAND 35.70N 83.82W
08/09/2012 BLOUNT TN 911 CALL CENTER
COUPLE OF TREES DOWN SOUTH OF WALLAND.
0305 PM TSTM WND DMG KNOXVILLE 35.97N 83.95W
08/09/2012 KNOX TN 911 CALL CENTER
COUPLE OF TREES DOWN IN WEST KNOXVILLE.
0335 PM TSTM WND DMG KNOXVILLE 35.97N 83.95W
08/09/2012 KNOX TN 911 CALL CENTER
TREES DOWN ACROSS WESTERN KNOX COUNTY
0355 PM TSTM WND DMG SSW RUTLEDGE 36.27N 83.52W
08/09/2012 GRAINGER TN 911 CALL CENTER
ONE TREE DOWN ON HOWELL RIVER RD.
0405 PM TSTM WND DMG HARROGATE-SHAWANEE 36.58N 83.64W
08/09/2012 CLAIBORNE TN 911 CALL CENTER
A FEW TREES DOWN IN HARROGATE
0520 PM TSTM WND DMG SURGOINSVILLE 36.47N 82.86W
08/09/2012 HAWKINS TN 911 CALL CENTER
TREES DOWN.
0525 PM TSTM WND DMG 4 N EMORY-MEADOW VIEW 36.83N 81.85W
08/09/2012 WASHINGTON VA DEPT OF HIGHWAYS
COUPLE OF TREES DOWN NORTH OF MEADOWVIEW.
0530 PM TSTM WND DMG 5 SW GLADE SPRING 36.74N 81.84W
08/09/2012 WASHINGTON VA 911 CALL CENTER
ONE TREE DOWN ON CEDAR CREEK RD
0545 PM TSTM WND DMG GATE CITY 36.64N 82.58W
08/09/2012 SCOTT VA 911 CALL CENTER
TREES DOWN COUNTY WIDE
&&
JWINTONPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MORRISTOWN TN
1143 AM EDT FRI AUG 10 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1245 PM TSTM WND DMG WHITWELL 35.20N 85.52W
08/09/2012 MARION TN LAW ENFORCEMENT
FEW TREES DOWN IN WHITWELL.
0130 PM TSTM WND DMG 5 N RELIANCE 35.26N 84.57W
08/09/2012 POLK TN LAW ENFORCEMENT
COUPLE OF TREES DOWN NORTH OF RELIANCE.
0155 PM TSTM WND DMG ETOWAH 35.33N 84.53W
08/09/2012 MCMINN TN 911 CALL CENTER
COUPLE OF TREES DOWN AROUND ETOWAH.
0225 PM TSTM WND DMG 2 S WALLAND 35.70N 83.82W
08/09/2012 BLOUNT TN 911 CALL CENTER
COUPLE OF TREES DOWN SOUTH OF WALLAND.
0305 PM TSTM WND DMG KNOXVILLE 35.97N 83.95W
08/09/2012 KNOX TN 911 CALL CENTER
COUPLE OF TREES DOWN IN WEST KNOXVILLE.
0335 PM TSTM WND DMG KNOXVILLE 35.97N 83.95W
08/09/2012 KNOX TN 911 CALL CENTER
TREES DOWN ACROSS WESTERN KNOX COUNTY
0355 PM TSTM WND DMG SSW RUTLEDGE 36.27N 83.52W
08/09/2012 GRAINGER TN 911 CALL CENTER
ONE TREE DOWN ON HOWELL RIVER RD.
0405 PM TSTM WND DMG HARROGATE-SHAWANEE 36.58N 83.64W
08/09/2012 CLAIBORNE TN 911 CALL CENTER
A FEW TREES DOWN IN HARROGATE
0520 PM TSTM WND DMG SURGOINSVILLE 36.47N 82.86W
08/09/2012 HAWKINS TN 911 CALL CENTER
TREES DOWN.
0525 PM TSTM WND DMG 4 N EMORY-MEADOW VIEW 36.83N 81.85W
08/09/2012 WASHINGTON VA DEPT OF HIGHWAYS
COUPLE OF TREES DOWN NORTH OF MEADOWVIEW.
0530 PM TSTM WND DMG 5 SW GLADE SPRING 36.74N 81.84W
08/09/2012 WASHINGTON VA 911 CALL CENTER
ONE TREE DOWN ON CEDAR CREEK RD
0545 PM TSTM WND DMG GATE CITY 36.64N 82.58W
08/09/2012 SCOTT VA 911 CALL CENTER
TREES DOWN COUNTY WIDE
&&
JWINTONSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 404 PM EDT FRI AUG 10 2012 TNZ067-068-084>086-102045- LOUDON TN-MCMINN TN-MEIGS TN-NORTHWEST MONROE TN-ROANE TN- 404 PM EDT FRI AUG 10 2012 ...SIGNIFICANT WEATHER ADVISORY FOR EXTREME NORTHERN MONROE... MEIGS...EXTREME NORTHERN MCMINN...LOUDON AND ROANE COUNTIES UNTIL 445 PM EDT... AT 402 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 8 MILES EAST OF SPRING CITY...OR 12 MILES SOUTH OF ROCKWOOD...MOVING EAST AT 15 MPH. SMALL HAIL AND WIND GUSTS UP TO 45 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...SWEETWATER... LOUDON...TEN MILE...MURRAY STORE...FAIRVIEW...PAINT ROCK AND PHILADELPHIA. 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!
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 445 PM EDT FRI AUG 10 2012 TNZ098-102130- MARION TN- 345 PM CDT FRI AUG 10 2012 ...SIGNIFICANT WEATHER ADVISORY FOR MARION COUNTY UNTIL 430 PM CDT... AT 339 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6 MILES NORTHWEST OF SOUTH PITTSBURG...OR 9 MILES WEST OF JASPER...MOVING EAST AT 20 MPH. SMALL HAIL AND WIND GUSTS UP TO 40 MPH ARE POSSIBLE WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...JASPER...SOUTH PITTSBURG...HALETOWN (GUILD) AND MARTIN SPRINGS. 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!
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 400 PM CDT FRI AUG 10 2012 VAZ006-008-102130- RUSSELL VA-WASHINGTON VA- 500 PM EDT FRI AUG 10 2012 ...SIGNIFICANT WEATHER ADVISORY FOR WASHINGTON AND RUSSELL COUNTIES UNTIL 530 PM EDT... AT 454 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR LEBANON...MOVING EAST AT 30 MPH. SMALL HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...HONAKER...ROSEDALE AND DYE. 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!
The Northeast Alabama radar (KHTX), 42 km away, was scanning. The volume nearest the first event began at 21:00 UTC.
3 thunderstorm wind. Local standard time, as filed.
Law enforcement personnel reported a few trees downed by thunderstorm wind in Kimbell 2 miles southwest of Jasper.
Law enforcement personnel reported a few trees and powerlines downed by thunderstorm wind in Chattanooga.
Law enforcement personnel reported powerlines downed by thunderstorm wind in Cleveland.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2012Every state in 2012This day in weather historyWarnings in Tennessee, August 2012
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: 402321, 402323, 402324.