A boundary across the area triggered isolated severe thunderstorms during the evening hours. Storm reports contained damaging thunderstorm winds.
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.
A boundary across the area triggered isolated severe thunderstorms during the evening hours. Storm reports contained damaging thunderstorm winds.
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 22, 8:00 PM EST, 20 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 900 PM EDT SAT AUG 22 2009 .DISCUSSION...UNSEASONABLY AMPLIFIED UPPER TROUGH CONTINUES TO SLOWLY PROGRESS THROUGH THE SOUTHERN APPALACHIAN REGION. ISOLATED TO WIDELY SCATTERED CONVECTION ACCOMPANYING UPPER TROUGH BUT IT IS EXPECTED TO DECREASE IN COVERAGE AND INTENSITY WITH LOSS OF DAYTIME HEATING. FORECAST GENERALLY APPEARS ON TRACK WITH THIS SCENARIO. TEMPS APPEAR REASONABLE BASED ON CURRENT TRENDS AND LATEST GUIDANCE. WILL UPDATE ZONES TO REMOVE EVENING WORDING BUT OTHERWISE MAKE NO SIGNIFICANT CHANGES AT THIS TIME. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 61 83 61 86 63 / 20 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 60 81 60 84 62 / 20 10 0 0 0 OAK RIDGE, TN 59 81 59 84 61 / 20 0 0 0 0 TRI CITIES AIRPORT, TN 57 78 56 81 58 / 30 20 10 0 0 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && LCM
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MORRISTOWN TN 845 AM EDT SAT AUG 22 2009 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-231000- 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- 845 AM EDT (745 AM CDT) SAT AUG 22 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST TENNESSEE...SOUTHWEST VIRGINIA AND EXTREME SOUTHWEST NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 852 PM EDT SAT AUG 22 2009 TNZ040-041-070-073-074-230145- COCKE SMOKY MOUNTAINS-JEFFERSON-NORTH SEVIER-NORTHWEST COCKE-SEVIER SMOKY MOUNTAINS- 852 PM EDT SAT AUG 22 2009 ...A STRONG THUNDERSTORM WILL BE AFFECTING COCKE...JEFFERSON AND SEVIER COUNTIES... AT 851 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 5 MILES NORTHEAST OF GATLINBURG...MOVING NORTHEAST AT 15 MPH. PEA SIZE HAIL...AND WINDS AROUND 40 MPH ARE EXPECTED WITH THIS STORM. 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 DONT DROWN 17
The Knoxville radar (KMRX), 44 km away, was scanning. The volume nearest the first event began at 01:20 UTC.
2 thunderstorm wind. Local standard time, as filed.
Law enforcement personnel reported numerous trees downed by thunderstorm winds in the Pittman Center area.
Fire department personnel reported many trees and power poles downed by thunderstorm winds from Birds Creek Road to King Hollow Road in the Pittman Center area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2009Every state in 2009This day in weather historyWarnings in Tennessee, August 2009
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: 192248, 192253.