High pressure aloft over the deep Southeast kept east TN on the southern fringes of the Ohio Valley storm track. The wet airmass remained over the region with precipitable water values up to 2 inches.
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.
High pressure aloft over the deep Southeast kept east TN on the southern fringes of the Ohio Valley storm track. The wet airmass remained over the region with precipitable water values up to 2 inches.
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, 2:30 AM EST, 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 330 AM EDT SAT AUG 10 2013 .SHORT TERM (TODAY AND TONIGHT)... MORE OF THE SAME...ALTHOUGH THE MAIN STORM TRACK FROM W TN TO E KY MAY SAG A LITTLE SOUTHWARD TOWARD OUR AREA OVER THE NEXT 24 HOURS. THE TIMING OF WEAK SHORTWAVES AND BREAKS IN THE CLOUDINESS WILL MAKE MAX TEMPS TODAY IFFY EITHER DIRECTION BUT WILL STICK CLOSE TO A ROUGH AVERAGE OF MIDISH 80S IN THE VALLEY EVEN THOUGH WE SAW UPPER 80S TO 90 ON FRIDAY AND LOW TO MID 80S ON THURSDAY. LOCALIZED HEAVY RAIN AMOUNTS REMAIN POSSIBLE TODAY AND TONIGHT HERE AND THERE. .LONG TERM (SUNDAY THROUGH FRIDAY)... A WET PATTERN WILL CONTINUE INTO NEXT WEEK AS AN UPPER-LEVEL LOW PRESSURE SYSTEM AMPLIFIES OVER THE GREAT LAKES AND OHIO VALLEY...SENDING A SERIES OF SHORTWAVES INTO THE MOISTURE RICH ENVIRONMENT IN PLACE OVER OUR REGION. THUS...REASONABLE CHANCES FOR SCATTERED TO WIDESPREAD PRECIPITATION WILL EXIST FOR MOST OF THE UPCOMING WEEK. A COLD FRONT WILL BE EXITING THE AREA ON SUNDAY....LEADING TO SCATTERED CONVECTION ACROSS IT MOVES THROUGH /WITH THE HIGHEST CHANCES FAVORING THE EASTERN ZONES/. MORE WIDELY SCATTERED DIURNAL CONVECTION IS EXPECTED FOR MONDAY BEFORE ADDITIONAL SHORTWAVES BEGIN TO DROP SOUTH OUT OF THE OHIO VALLEY AND INTO THE REGION TUESDAY THROUGH THURSDAY AS THE UPPER-LOW AMPLIFIES. HAVE INCREASED POPS TO LIKELY ON TUESDAY AS MODELS ARE INDICATING ANOTHER FRONT PROGRESSING TOWARD THE AREA RESULTING A FEW ROUNDS OF HEAVIER SHOWERS AND STORMS BEGINNING LATE MONDAY NIGHT INTO TUESDAY BEFORE SLOWLY TAPERING OFF TUESDAY NIGHT/WEDNESDAY MORNING. ADDITIONAL SHORTWAVE PASSAGES ON WEDNESDAY AND TO A LESSER EXTENT THURSDAY WILL LEAD TO CHANCE POPS ONCE AGAIN ON THOSE DAYS AS THE UNSETTLED PATTERN CONTINUES. SOME SLIGHTLY DRIER CONDITIONS COULD BE IN STORE FOR FRIDAY...THOUGH IT APPEARS THAT GULF MOISTURE AND ADDITIONAL UPPER-WAVES MAY LEAD TO ADDITIONAL RAIN CHANCES HEADING INTO NEXT WEEKEND AS WELL. GIVEN THE VERY MOIST ATMOSPHERE AND THE ALREADY SATURATED SOIL CONDITIONS...LOCALLY HEAVY RAINFALL AND FLOODING IS PROBABLE IN AREAS THAT RECEIVE MULTIPLE ROUNDS OF PRECIPITATION. ALSO...WITH THE EXPECTED CLOUD COVER/PRECIPITATION CHANCES...HAVE TRENDED SLIGHTLY LOWER ON DAYTIME HIGHS THROUGH THE PERIOD. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 89 71 88 72 85 / 60 40 50 50 40 KNOXVILLE MCGHEE TYSON AIRPORT, TN 87 70 85 71 85 / 60 50 50 40 40 OAK RIDGE, TN 86 70 84 70 84 / 60 50 50 40 40 TRI CITIES AIRPORT, TN 85 67 81 65 82 / 60 50 50 30 30 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && GC/AMP
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 334 AM EDT SAT AUG 10 2013 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-110900- 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- 334 AM EDT SAT AUG 10 2013 /234 AM CDT SAT AUG 10 2013/ 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 ARE POSSIBLE AGAIN TODAY. SOME OF THESE STORMS COULD PRODUCE STRONG WIND GUSTS AS WELL AS LOCALLY HEAVY RAINFALL. MINOR FLOODING OF LOW LYING OR FLOOD PRONE AREAS IS POSSIBLE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY... A WARM...MOIST AIR MASS WILL KEEP A GOOD CHANCE OF SHOWERS AND THUNDERSTORMS ACROSS THE REGION THROUGH WEDNESDAY BEFORE DRIER AIR TEMPORARILY RETURNS. A FRONTAL PASSAGE DURING TUESDAY MAY PROVIDE THE MOST WIDESPREAD CONVECTIVE ACTIVITY OF THE WEEK. HOWEVER... LOCALLY HEAVY RAINS AND DAMAGING WIND GUSTS ARE POSSIBLE EACH DAY FROM SUNDAY THROUGH WEDNESDAY. .SPOTTER INFORMATION STATEMENT... DUE TO THE ISOLATED NATURE OF HEAVY RAINFALL AND STRONG WINDS... SPOTTER ACTIVATION IS NOT ANTICIPATED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 1033 PM EDT FRI AUG 9 2013 TNZ067-068-100315- LOUDON TN-ROANE TN- 1033 PM EDT FRI AUG 9 2013 ...SIGNIFICANT WEATHER ADVISORY FOR LOUDON AND ROANE COUNTIES UNTIL 1115 PM EDT... AT 1031 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6 MILES NORTHWEST OF SWEETWATER...MOVING NORTHEAST AT 25 MPH. SMALL HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...LOUDON...LENOIR CITY...PAINT ROCK AND PHILADELPHIA. 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! DGS
The Knoxville radar (KMRX), 137 km away, was scanning. The volume nearest the first event began at 08:01 UTC.
1 flash flood. Local standard time, as filed.
One family was evacuated from their home due to water entering. One road was also washed out.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2013Every state in 2013This day in weather historyWarnings in Tennessee, August 2013
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: 467522.