A boundary across the area produced isolated severe thunderstorms during the early morning hours. Storm reports comprised of wind damage.
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 produced isolated severe thunderstorms during the early morning hours. Storm reports comprised of wind damage.
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 Jun 21, 2:08 AM EST, 2 hours 52 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 308 AM EDT SUN JUN 21 2009 .SHORT TERM (TODAY AN TONIGHT)...FRONTAL BOUNDARY WILL SINK SSW INTO MRX CWA TODAY AND TONIGHT. UPPER FLOW NWRLY WITH AREA BETWEEN NE U.S. LOW AND SOUTH CENTRAL U.S. RIDGE. IMPULSES IN NW FLOW ALOFT WILL HELP TRIGGER CONVECTION ALONG AND AHEAD OF SURFACE BOUNDARY. MODERATE DESTABILIZATION WILL OCCUR THIS AFTERNOON WITH DAY TIME HEATING ADDING ADDITIONAL SUPPORT TO CONVECTION. SEVERE THREAT REMAINS LOW WITH WARM MID LEVEL TEMPS. MOS MAX TEMPS CONTINUE TO RUN HIGH SO UNDERCUT BY A COUPLE DEGREES. .LONG TERM (MONDAY THROUGH SATURDAY)...IN THE OVERALL PATTERN THROUGH THE EXTENDED...WILL CONTINUE UNDER NORTH TO NORTHWESTERLY FLOW ALOFT AS HIGH PRESSURE AMPLIFIES THEN SLOWLY TRANSLATES WESTWARD LATE IN THE PERIOD. A FRONTAL BOUNDARY HAS SLID INTO THE SOUTHERN APPALACHIAN REGION AND WILL STAY OVER THE AREA THROUGH MID WEEK AS IT SLOWLY WEAKENS. A SERIES OF SHORT WAVES WILL TRACK ALONG IT DURING THIS PERIOD...PROVIDING THE FOCUS FOR OCCASIONAL CONVECTION. THE STRONGEST OF THESE WAVES...BRINGING THE BEST CHANCE OF THUNDERSTORM...WILL SLIDE IN ON MONDAY. MODELS IN POOR AGREEMENT LATE IN THE PERIOD...BUT A SECOND BOUNDARY IS EXPECTED TO SETTLE INTO THE AREA FRIDAY INTO SATURDAY...CONTINUING THE OCCASIONAL ACTIVE CONVECTIVE PATTERN. AS FOR TEMPERATURES...STAYED CLOSE TO GUIDANCE WITH OVERALL READINGS EXPECTED TO REMAIN ABOVE NORMAL. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 95 73 92 71 92 / 20 20 30 20 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 89 71 89 68 89 / 50 50 40 20 20 OAK RIDGE, TN 90 70 90 68 90 / 40 50 40 20 20 TRI CITIES AIRPORT, TN 86 65 87 64 86 / 20 20 30 20 20 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && SON/MJB
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 534 AM EDT SUN JUN 21 2009 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-220945- 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- 534 AM EDT SUN JUN 21 2009 /434 AM CDT SUN JUN 21 2009/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS WILL DEVELOP ALONG A NEARLY STATIONARY FRONTAL BOUNDARY DRAPED ACROSS EAST TENNESSEE. LOCALIZED RAINFALL AMOUNTS NEAR TWO INCHES ARE POSSIBLE. AN ISOLATED SEVERE STORM IS POSSIBLE WITH THE MAIN THREAT BEING DAMAGING WINDS. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The Knoxville radar (KMRX), 54 km away, was scanning. The volume nearest the first event began at 10:01 UTC.
2 thunderstorm wind. Local standard time, as filed.
The local television station reported numerous trees downed by thunderstorm winds across the county. A few homes and a church in Knoxville were also damaged by the winds.
The local television network reported a few trees downed by thunderstorm winds.
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, June 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: 178761, 178765.