A frontal boundary lingering across east Tennessee produced thunderstorms during the evening on the 21st. One of the storms downed some trees.
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 frontal boundary lingering across east Tennessee produced thunderstorms during the evening on the 21st. One of the storms downed some trees.
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 21, 1:51 PM EST, 4 hours 39 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 251 PM EDT THU AUG 21 2014 .SHORT TERM...(TONIGHT AND FRIDAY)...THE AXIS OF THE UPPER RIDGE WILL CONTINUE TO BE CENTERED TO OUR WEST. WEAK IMPULSES SLIDING DOWN THE EAST SIDE OF THE RIDGE WILL KEEP THE BEST CHANCES FOR PRECIPITATION ACROSS THE NORTH. ANY CONVECTION THIS AFTERNOON IS EXPECTED TO DIMINISH THIS EVENING...THEN THE NEXT WEAK IMPULSE SHOULD AFFECT ESPECIALLY NORTHERN AREAS FRIDAY AFTERNOON. WILL GO WITH SLIGHT CHANCE POPS SOUTH AND HIGH CHANCE NORTH ON FRIDAY. APPEARS CAPE VALUES WILL BE HIGH AGAIN FRIDAY AFTERNOON...AND STRONG TO SEVERE STORMS WILL AGAIN BE POSSIBLE WITH DAMAGING WINDS AND HAIL THE PRIMARY THREATS. WILL GO CLOSE TO MAV TEMPS FOR LOWS TONIGHT...BUT WILL UNDERCUT MAV TEMPS ESPECIALLY NORTH FOR HIGHS TOMORROW. .LONG TERM...(FRIDAY NIGHT THROUGH THURSDAY)...UPPER LEVEL HIGH PRESSURE WILL BRING HOT TEMPERATURES AND DAILY CHANCES OF DIURNAL CONVECTION. HOWEVER...NW FLOW ACROSS THE REGION WILL ALSO PERMIT A CHANCE OF NOCTURNAL MCS EVENTS...AND MAYBE THE WEEKEND WILL BE AN OCCASION FOR SUCH A THING...MAYBE LATE FRIDAY NIGHT INTO SATURDAY MORNING FOR STARTERS. PRECIP CHANCES WILL WANE AS DRIER AIR MOVES IN FROM NORTH MIDWEEK... REDUCING US TO MOSTLY ISOLATED AFTERNOON HIGHER ELEVATION CONVECTION. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 71 96 73 96 / 20 20 20 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 70 92 73 93 / 20 30 30 40 OAK RIDGE, TN 69 92 72 93 / 20 30 30 40 TRI CITIES AIRPORT, TN 65 89 68 90 / 30 50 50 40 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && LW/GC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 443 PM EDT THU AUG 21 2014 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-222045- 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- 443 PM EDT THU AUG 21 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TONIGHT... SCATTERED THUNDERSTORMS OVER EASTERN KENTUCKY WILL MOVE SOUTHEAST AT 25 TO 30 MPH...AND MAY PASS ACROSS SOUTHWESTERN VIRGINIA AND EXTREME NORTHEAST TENNESSEE...GENERALLY BETWEEN 530 AND 8PM EDT. RADAR TRENDS SHOWED THE STORMS WEAKENING AT LATE AFTERNOON...BUT THE STRONGEST STORMS COULD PRODUCE GUSTY WINDS UP TO 45 MPH... AND BRIEF LOCALLY HEAVY RAINS UP TO 1 INCH PER HOUR. AN ISOLATED SEVERE STORM IS POSSIBLE...IF ANY INTENSIFICATION OCCURS THIS EVENING. BY LATE EVENING OR MIDNIGHT...ALL SHOWERS AND THUNDERSTORMS ARE LIKELY TO DISSIPATE WITH THE LOSS OF DAYTIME HEATING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... AN ACTIVE WEATHER PATTERN IS EXPECTED TO LINGER OVER THE REGION THROUGH THE WEEKEND. UPPER LEVEL DISTURBANCES ORIGINATING AROUND THE GREAT LAKES ARE EXPECTED TO TRACK SOUTHEAST...AND BRING THE POSSIBILITY OF STRONG STORMS TO PORTIONS OF THE AREA...MAINLY SOUTHWESTERN VIRGINIA AND NORTHEAST TENNESSEE. AT THIS TIME...FRIDAY AFTERNOON AND EVENING APPEARS TO BE THE MOST LIKELY TIME PERIOD FOR STRONG STORMS IN NORTHERN PORTIONS OF THE AREA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME...DUE TO THE ISOLATED NATURE OF THE POSSIBLE THREATS. TG
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
325 PM EDT THU AUG 21 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0104 PM TSTM WND DMG SHARPS CHAPEL 36.34N 83.81W
08/20/2014 UNION TN 911 CALL CENTER
DISPATCH REPORTED A FEW TREES DOWNED IN THE COUNTY.
&&
GHPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
325 PM EDT THU AUG 21 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0730 PM TSTM WND DMG SHARPS CHAPEL 36.34N 83.81W
08/20/2014 UNION TN 911 CALL CENTER
DISPATCH REPORTED A FEW TREES DOWNED IN THE COUNTY.
&&
GHSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
542 PM EDT THU AUG 21 2014
VAZ001-002-005-006-212315-
SCOTT VA-RUSSELL VA-WISE VA-LEE VA-
542 PM EDT THU AUG 21 2014
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WASHINGTON...WISE...
RUSSELL...SCOTT AND LEE COUNTIES AND THE CITY OF NORTON UNTIL 715 PM
EDT...
AT 540 PM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE MOVING EAST AT 40 MPH.
HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
NORTON...LEBANON...WISE...GATE CITY...JONESVILLE...BIG STONE GAP...
PENNINGTON GAP...WEBER CITY...CLEVELAND...COEBURN...APPALACHIA...
HONAKER...POUND...ST. PAUL...NICKELSVILLE...DUNGANNON...ST.
CHARLES...DUFFIELD...CLINCHPORT AND DRYDEN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HEAVY RAINFALL WITH AMOUNTS OF 1 TO 2 INCHES OF RAIN PER HOUR IS
ALSO OCCURRING WITH THESE STORMS...AND MAY LEAD TO LOCALIZED FLASH
FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. LIGHTNING
CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER
INSIDE A BUILDING OR VEHICLE.
&&
LAT...LON 3703 8248 3696 8236 3704 8217 3705 8204
3712 8201 3714 8191 3696 8178 3689 8189
3686 8208 3680 8211 3673 8231 3660 8230
3660 8367 3674 8314 3683 8310 3689 8288
3698 8287 3705 8272 3712 8272 3720 8255
TIME...MOT...LOC 2140Z 289DEG 37KT 3736 8206 3716 8316
JWSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
637 PM EDT THU AUG 21 2014
TNZ015-017-018-044>047-VAZ001-002-008-220000-
WASHINGTON TN-HANCOCK TN-JOHNSON TN-SULLIVAN TN-SOUTHEAST CARTER TN-
NORTHWEST CARTER TN-UNICOI TN-WISE VA-LEE VA-WASHINGTON VA-
637 PM EDT THU AUG 21 2014
...SIGNIFICANT WEATHER ADVISORY FOR WASHINGTON...NORTHEASTERN
GREENE...CARTER...JOHNSON...NORTHEASTERN HAWKINS...EASTERN HANCOCK...
NORTHEASTERN UNICOI...SULLIVAN...WASHINGTON...SOUTHEASTERN WISE...
SOUTHWESTERN RUSSELL...NORTHEASTERN SCOTT...EAST CENTRAL LEE COUNTIES
AND THE CITY OF BRISTOL UNTIL 800 PM EDT...
AT 635 PM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS MOVING SOUTHEAST AT 15 MPH.
HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
JOHNSON CITY...KINGSPORT...ELIZABETHTON...ABINGDON...ERWIN...MOUNTAIN
CITY...GATE CITY...BRISTOL TN...BRISTOL VA...BRISTOL...
JONESBOROUGH...SURGOINSVILLE...PENNINGTON GAP...WEBER CITY...
MIDWAY...COLONIAL HEIGHTS...BANNER HILL...SPURGEON...OAK GROVE AND
WALNUT HILL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
RAINFALL AMOUNTS OF UP TO 1 TO 2 INCHES ARE ALSO OCCURRING WITH
THESE STORMS...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR
VEHICLE THROUGH FLOODED ROADWAYS.
CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. LIGHTNING
CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER
INSIDE A BUILDING OR VEHICLE.
&&
LAT...LON 3634 8171 3609 8240 3659 8289 3657 8260
3659 8261 3676 8306 3686 8267 3687 8264
3682 8276 3675 8283 3660 8230 3689 8234
3688 8259 3689 8258 3695 8232 3673 8230
3693 8183 3664 8161
TIME...MOT...LOC 2235Z 332DEG 15KT 3670 8293 3700 8178
JWThe Knoxville radar (KMRX), 73 km away, was scanning. The volume nearest the first event began at 23:31 UTC.
1 thunderstorm wind. Local standard time, as filed.
The public reported a few trees were downed by thunderstorm wind at a residence in Church Hill.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2014Every state in 2014This day in weather historyWarnings in Tennessee, August 2014
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: 531521.