Scattered showers and thunderstorms developed across Middle Tennessee in the afternoon hours on August 30, leading to some isolated wind damage. Showers continued into the evening and late evening hours leading to flash flooding across portions of the Upper Cumberland.
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 OHX wrote it up.
Scattered showers and thunderstorms developed across Middle Tennessee in the afternoon hours on August 30, leading to some isolated wind damage. Showers continued into the evening and late evening hours leading to flash flooding across portions of the Upper Cumberland.
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 Nashville, TN wrote its last area forecast discussion before the first event at Aug 30, 1:19 PM CST, 2 hours 56 minutes earlier.
Area Forecast Discussion National Weather Service Nashville TN 219 PM CDT Sun Aug 30 2020 .DISCUSSION... Weak SFC front holding position along our northern border, extending back down into central AR. Moisture remains deep ahead, and a weak upper impulse is just upstream. While most activity did fall off, it is expected to redevelop well into the evening as this upper energy passes. And we are looking at very similar conditions on Mon as well. Upper flow remains weak which will help keep our frontal boundary/deep moisture in the immediate vicinity. Additionally, another upper wave will pass early in the day. Again, expect scattered-numerous showers/storms. SVR parameters remainder of today and Mon look to remain low-end...but a strong storm or two definitely in the picture. Behind this upper wave/trough we look to get some deep-layer drying Mon night, but that will be short-lived as moisture quickly deepens once again Tues morning. Our frontal boundary will make a move northeast as upper flow shifts more southwest and a weak SFC low crosses the upper mid-west. This however will leave another cold front to our northwest early Wed. Our upper flow will remain southwest into the end of the week as a fairly sharp trough moves across plains. This upper trough will weaken but eventually move over the mid-state late Fri/early Sat...bringing this cold front across us Fri and well south by early Sat. This looks to continue our string of scattered-numerous showers/storms Tue-Thu, especially in the afternoon and evening when heating boosts our instability. Overall however, SVR storms chances again look low. But strong storms do remain very much a good possibility. On Fri, storm chances will remain as the front passes, but then ramp down Fri night and Sat behind this boundary. We should also feel a noticable difference as humidity drops as well. This front is expected to make down to near the coast but moisture/showers may already work back into the picture later Sun. And by early Mon, models hinting at another front already on our doorstep. && .AVIATION... 18Z TAF DISCUSSION. VFR conditions are expected early this afternoon before another round of TSRA with MVFR conditions develops and spreads across airports from west to east in the late afternoon hours. Conditions are anticipated to improve back to VFR this evening but VCSH and MVFR visibility look to impact CKV/CSV late tonight. Light easterly winds today will become light southerly on Monday. && .PRELIMINARY POINT TEMPS/POPS... Nashville 71 87 72 88 74 / 70 60 40 70 50 Clarksville 69 85 70 84 71 / 50 40 50 80 60 Crossville 67 80 67 83 69 / 70 70 30 50 30 Columbia 71 86 72 87 73 / 70 70 40 70 40 Lawrenceburg 71 85 71 87 72 / 70 70 40 70 30 Waverly 70 85 70 85 71 / 60 50 50 80 50 && .OHX WATCHES/WARNINGS/ADVISORIES... NONE. && DISCUSSION......07 AVIATION........Shamburger
Hazardous Weather Outlook National Weather Service Nashville TN 505 AM CDT Sun Aug 30 2020 TNZ005>011-023>034-056>066-075-077>080-093>095-311015- Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Pickett-Houston- Humphreys-Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson- Putnam-Overton-Fentress-Perry-Hickman-Lewis-Williamson-Maury- Marshall-Rutherford-Cannon-De Kalb-White-Cumberland-Bedford-Coffee- Warren-Grundy-Van Buren-Wayne-Lawrence-Giles- 505 AM CDT Sun Aug 30 2020 This Hazardous Weather Outlook is for Middle Tennessee. .DAY ONE...Today and tonight. Clusters of showers and thunderstorms will move across Middle Tennessee today, and especially tonight. Some thunderstorms will be strong with heavy downpours and gusty winds. A couple of the storms could briefly reach severe levels with damaging wind gusts. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Widespread severe weather is not expected, but a few storms could be strong each day Monday through Friday. The strongest storms are expected in the afternoon and evening hours with locally heavy downpours and gusty winds. .SPOTTER INFORMATION STATEMENT... Spotter should relay any information about observed severe weather or flooding to the NWS while following all local, state, and CDC guidelines. 13
Special Weather Statement National Weather Service Nashville TN 247 PM CDT Sun Aug 30 2020 TNZ093-094-302015- Lawrence TN-Wayne TN- 247 PM CDT Sun Aug 30 2020 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN WAYNE AND SOUTHERN LAWRENCE COUNTIES UNTIL 315 PM CDT... At 247 PM CDT, Doppler radar was tracking a strong thunderstorm near Loretto, or 17 miles southwest of Lawrenceburg, moving east at 25 mph. Winds in excess of 30 mph will be possible with this storm. Locations impacted include... Lawrenceburg, Loretto, St. Joseph, Leoma, Westpoint and Iron City. LAT...LON 3500 8766 3510 8765 3522 8729 3500 8723 TIME...MOT...LOC 1947Z 259DEG 26KT 3505 8752 21
Special Weather Statement
National Weather Service Nashville TN
343 PM CDT Sun Aug 30 2020
TNZ005-023-024-302130-
Stewart TN-Humphreys TN-Houston TN-
343 PM CDT Sun Aug 30 2020
...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL STEWART...WESTERN
HOUSTON AND NORTH CENTRAL HUMPHREYS COUNTIES UNTIL 430 PM CDT...
At 343 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles east of Springville, or 13 miles north of Camden, moving east
at 25 mph.
Winds in excess of 30 mph will be possible with this storm.
Locations impacted include...
Erin, Tennessee Ridge and Houston County Airport.
LAT...LON 3639 8769 3613 8767 3616 8792 3617 8792
3618 8793 3621 8794 3622 8795 3624 8795
3626 8794 3632 8796
TIME...MOT...LOC 2043Z 265DEG 22KT 3624 8798
21Special Weather Statement
National Weather Service Nashville TN
430 PM CDT Sun Aug 30 2020
TNZ025-026-302215-
Dickson TN-Cheatham TN-
430 PM CDT Sun Aug 30 2020
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN DICKSON AND CENTRAL
CHEATHAM COUNTIES UNTIL 515 PM CDT...
At 429 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles north of White Bluff, or 12 miles west of Ashland City, moving
east at 25 mph.
Winds in excess of 30 mph will be possible with this storm.
Locations impacted include...
Ashland City, Charlotte and Cheatham Dam.
LAT...LON 3637 8705 3616 8703 3618 8736 3632 8737
3632 8731 3631 8730 3633 8728
TIME...MOT...LOC 2129Z 264DEG 23KT 3624 8727
21Special Weather Statement
National Weather Service Nashville TN
506 PM CDT Sun Aug 30 2020
TNZ007-008-302245-
Robertson TN-Sumner TN-
506 PM CDT Sun Aug 30 2020
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN SUMNER AND
NORTHEASTERN ROBERTSON COUNTIES UNTIL 545 PM CDT...
At 506 PM CDT, Doppler radar was tracking a strong thunderstorm near
Cross Plains, or 8 miles northeast of Springfield, moving east at 20
mph.
Winds in excess of 30 mph will be possible with this storm.
Locations impacted include...
Cross Plains, Orlinda and Mitchellville.
This includes Interstate 65 between mile markers 110 and 120.
LAT...LON 3663 8657 3665 8652 3648 8653 3651 8683
3665 8683 3665 8659
TIME...MOT...LOC 2206Z 266DEG 16KT 3657 8676
21The Nashville radar (KOHX), 37 km away, was scanning. The volume nearest the first event began at 22:17 UTC.
4 flash flood, 1 thunderstorm wind. Local standard time, as filed.
Multiple trees were blown down along Highway 25 near Couts Carr Road in Cross Plains.
Several roads were flooded and closed in Livingston, including Rickman Road at South Wood Road, Oak Street, East Main Street at Windle Street, the 1600 block of Rose Drive, and Henson Street.
One home was flooded and almost completely underwater along the river by Rickman Road and Southwood Road.
More roads were flooded across Livingston, including the 512 block of West Main Street, Bradford Hicks Drive on-ramp, and Villa Drive at Minnow Pond Road.
A water rescue was conducted for a person trapped on top of a flooded car. Several creeks and roads were also flooded in the Baxter area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2020Every state in 2020This day in weather historyWarnings in Tennessee, August 2020
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: 917931, 917932, 917933, 917934, 917935.