Scattered showers and thunderstorms developed in the afternoon on August 22nd. Lightning struck a home leading to damage.
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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 in the afternoon on August 22nd. Lightning struck a home leading to 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 Nashville, TN wrote its last area forecast discussion before the first event at Aug 21, 1:27 PM CST, 3 hours 3 minutes earlier.
Area Forecast Discussion National Weather Service Nashville TN 227 PM CDT Fri Aug 21 2020 .DISCUSSION... Upper trough axis is aligned over western TN this afternoon. Mean 700-500mb wind flow is rather light and hence the slow westward cell movement. Upper divergence is rather pronounced across our northwest third with the greatest rainfall amounts occurring across that area. Dynamics expected to ramp up some overnight as the close low moves toward the TN river. Moisture depth does show a modest increase through 12Z as well. Hrrr concurs with convection continuing across the northwest half overnight. Will plan on keeping pops in that 40- 50% range. The convection will continue to be slow moving so isolated 1 to 2 inch rainfall amounts across the northwest third will be possible. On Saturday, the intensity of the upper low weakens as it opens up a bit. The axis will still be directly over us with likely pops continuing. On Sunday, the axis will begin to lift off to the northeast. Pops at that time will be mostly in the 30-40% range. WPC is showing 48 hour avg qpf amounts, starting this evening, of 1 1/2 inches far north to one half inch south. For the near term temps, highs to remain in the 80s over the next couple of days. In the ext fcst, weak nw-se upper ridging to win out. This will reduce our pops to just 20 percent or so through mid week. By the end of the week, some tropical moisture may come into play. Two separate systems appear to be heading for the northern Gulf coast on Tuesday. NHC indicates that these two systems may obtain tropical storm status by that time. The westernmost system may become a bit of a player for the middle TN area by next weekend. Will therefore ramp pops up a touch for Thursday and Friday. For the ext temps, values will rebound and be back up to normal or just above. The high temps may drop a degree or two by next weekend as some added tropical moisture might be on tap. && .AVIATION... 18Z TAF DISCUSSION. CKV/BNA/MQY/CSV...Upper level troughing persistence with pronounced low/mid level moisture advection pattern will provide for VCSH/VCTS potential thru 22/18Z. A mixture of VFR/MVFR stratus ceilings with IFR ceilings 22/07Z-22/15Z possible as upper level low moves SW to NE across area 22/06Z-22/15Z. Although certainly some tstms possible beforehand, tstm chances not mentioned until movement of upper low across mid state region per best instability dynamics. Generally areal sct shwrs & tstms expected, so hard to depict actual time intervals developments at/movement across terminals, but certainly possible within vcnty. MVFR/IFR fog possible CSV 22/10Z-22/14Z. Light winds predominately E thru S thru 22/18Z. && .PRELIMINARY POINT TEMPS/POPS... Nashville 67 82 67 87 69 / 50 60 40 30 10 Clarksville 65 82 66 86 67 / 50 60 40 20 10 Crossville 64 78 65 80 65 / 50 70 50 50 20 Columbia 67 81 66 87 69 / 50 60 40 20 10 Lawrenceburg 66 83 66 87 69 / 50 60 40 30 10 Waverly 65 82 67 86 67 / 40 60 40 20 10 && .OHX WATCHES/WARNINGS/ADVISORIES... NONE. && DISCUSSION......21 AVIATION........JB Wright
Hazardous Weather Outlook National Weather Service Nashville TN 502 AM CDT Fri Aug 21 2020 TNZ005>011-023>034-056>066-075-077>080-093>095-221015- 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- 502 AM CDT Fri Aug 21 2020 This Hazardous Weather Outlook is for Middle Tennessee. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. 27
The Nashville radar (KOHX), 29 km away, was scanning. The volume nearest the first event began at 22:29 UTC.
1 lightning. Local standard time, as filed.
Lightning struck a house in the 6000 block of SE Tater Peeler Road causing roof damage and destroying part of a chimney. Damage was estimated at $1,000 dollars.
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: 917929.