During the afternoon on June 29, the southeastern United States was in an area of high pressure. In the weak shear environment, pulse thunderstorms initiated during the warming of the day.
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 LMK wrote it up.
During the afternoon on June 29, the southeastern United States was in an area of high pressure. In the weak shear environment, pulse thunderstorms initiated during the warming of the day. Outflow boundaries, from the first storms, initiated other storms. This resulted in isolated wind damage to trees and power lines across south-central Indiana.
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 Louisville, KY wrote its last area forecast discussion before the first event at Jun 29, 2:15 PM EST, 2 hours 50 minutes earlier.
Area Forecast Discussion National Weather Service Louisville KY 315 PM EDT Tue Jun 29 2021 .Short Term...(This evening through Wednesday) Issued at 305 PM EDT Tue Jun 29 2021 Moisture and mid-level energy associated with the remnants of Danny will continue NW into northern MS and western TN through this evening. Deep convection is propagating NW across northern MS and central/western TN now, around an upper level ridge holding strong over central KY and southern IN. Pulse convection has bubbled up a county or two west of the CWA, and some slight expansion eastward is expected this afternoon and evening. Did go ahead and trim PoPs to keep the Bluegrass dry through 00z, with a slight chance to the I-65 corridor, and low chance PoPs west of I-65 (roughly). PoPs range from 10-30 percent through sunset before diminishing. The upper level ridge finally begins to weaken overnight, and 12z CAMs suggest a rogue shower or two at times overnight in the humid airmass. Held on to a slight chance PoP for multiple hours overnight, though most of that time will be dry. Steady height falls aloft continue into Wednesday. The upper ridge is suppressed and looks to re-center itself over Texas as a large upper level trough drops south over the Great Lakes. Increasing moisture from the southwest will push PWATs to 1.8-2.0 inches on Wednesday. With a weak sfc trof just off to the northwest, isolated to scattered showers look possible through the mid to late morning hours in southern Indiana. Skies look to range from partly sunny to mostly cloudy on Wednesday, with greater sky cover along and north of the Ohio River. Given the high theta-e air in place, at least modest destabilization is likely through midday. A subtle mid- level shortwave moving east over the Ohio Valley and a very weak sfc trof should provide enough triggers to support scattered to numerous showers and storms Wednesday afternoon and evening. The greatest coverage will likely be along and north of the I-64 corridor, with coverage more widely scattered in south-central KY. Wind fields aloft remain very weak, however, so storms are unlikely to become organized. A few stronger storms could produce locally strong wind gusts and/or a brief downpour. There is a low-end flooding risk on Wednesday, especially over southern Indiana and northern Kentucky where greater convective coverage should increase the risk for localized training. Any training could quickly produce some minor flooding/ponding of water and be a nuisance. Cloudier conditions and decreasing 1000-850mb thicknesses will result in slightly cooler temperatures with highs in mid 80s. && .Long Term...(Wednesday night through Tuesday) Issued at 315 PM EDT Tue Jun 29 2021 Upper pattern will finally be changing Wednesday night as the Mid- Atlantic upper ridge eventually breaks down as the positively-tilted and deepening Great Lakes trough pushes further east. To our northwest, the strong Pacific NW upper high that caused record- breaking temperatures will be tracking eastward across Saskatchewan on Thursday, which will help amplify and dig the Great Lakes trough further south. This will allow the persistent sfc boundary to drop southward and eastward across the Ohio Valley on Thursday and Friday, leading to widespread shower and storm chances ahead of the boundary. For Thursday, axis of abundant PWATs will be located ahead of the front, with guidance mostly in agreement with values between 1.9- 2.2". Model soundings suggest less CAPE for Thursday, primarily due to thicker cloud cover and temps only expected to reach the upper 70s to near 80 during the afternoon hours. Could have some rumbles of thunder mixed in, but think we'll see more widespread showers, possibly heavy at times. Front seems to be progressive, but with available moisture content near climate max, we could have some localized flooding concerns during the afternoon and evening hours. WPC highlights our region in a Excessive Rainfall Outlook for Thursday with a Marginal and Slight risk. 1-hour Flash Flood Guidance is above 2 inches, so we would need some heavy rain rates or long residence time over one area to approach FFG. Storm total QPF from Wednesday afternoon to Friday afternoon has increased slightly again, now in the range of 2-3.5 inches across our CWA. Front looks to pass through sometime Friday morning, resulting in cool northerly winds and drier conditions. NBM continues to be a wet solution for Friday, but will trend back PoPs for Friday afternoon for everywhere but our Lake Cumberland region. Clouds look to hang around through the early afternoon hours, but we should see more sunshine by the mid afternoon hours. Temps will again stay near 80F on Friday thanks to northerly winds. For the holiday weekend, guidance continues to become more aligned with the evolution of the upper trough and flow. The GFS and ECMWF both now show the Great Lakes trough deepen into a closed upper low on Saturday somewhere over OH/WV region, and eventually spinning up the East Coast and away from our region. At the sfc, a sfc high will fill in behind the FROPA, resulting in dry weather for Saturday and Sunday. Temps look to remain below normal for the weekend, with Saturday expected to stay in the upper 70s and Sunday in the low 80s. It's not until Monday and Tuesday when we could see temps warm into the upper 80s to low 90s again. && .Aviation...(18Z TAF Issuance) Issued at 155 PM EDT Tue Jun 29 2021 Scattered thunderstorm development is expected across central and western portions of KY and southern IN this afternoon and evening, with coverage increasing during the mid to late afternoon hours. Included a VCTS mention at HNB/BWG/SDF, but SDF and BWG will likely by near the eastern extent of scattered convection. Stronger upper level subsidence to the east will help suppress shower/storm development. Will need to monitor for a 21z amendment today to narrow or remove the VCTS mention should lightning activity remain more isolated or slightly further west. A few showers may linger overnight in a humid airmass. Scattered shower activity likely increases a bit Wednesday morning as very moist air moves northeast into the Lower Ohio Valley ahead of a weak sfc trof. Scattered to numerous showers and storms are possible Wednesday afternoon and evening. && .LMK WATCHES/WARNINGS/ADVISORIES... IN...None. KY...None. && Short Term...EBW Long Term...CJP Aviation...EBW
Hazardous Weather Outlook National Weather Service Louisville KY 343 PM EDT Tue Jun 29 2021 INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067- 070>078-081-082-301945- Orange-Washington-Scott-Jefferson-Dubois-Crawford-Perry-Harrison- Floyd-Clark-Hancock-Breckinridge-Meade-Ohio-Grayson-Hardin-Bullitt- Oldham-Trimble-Henry-Shelby-Franklin-Spencer-Anderson-Woodford- Fayette-Bourbon-Nicholas-Nelson-Mercer-Jessamine-Larue-Marion-Boyle- Garrard-Madison-Butler-Edmonson-Hart-Green-Taylor-Casey-Lincoln- Logan-Warren-Simpson-Allen-Barren-Monroe-Metcalfe-Adair-Russell- Cumberland-Clinton- Including the cities of Paoli, Salem, Scottsburg, Madison, Jasper, English, Tell City, Corydon, New Albany, Jeffersonville, Lewisport, Hawesville, Hardinsburg, Brandenburg, Hartford, Leitchfield, Elizabethtown, Shepherdsville, Louisville, La Grange, Bedford, Milton, New Castle, Shelbyville, Frankfort, Georgetown, Cynthiana, Taylorsville, Lawrenceburg, Versailles, Lexington, Paris, Carlisle, Bardstown, Springfield, Harrodsburg, Nicholasville, Winchester, Hodgenville, Lebanon, Danville, Lancaster, Richmond, Morgantown, Brownsville, Horse Cave, Greensburg, Campbellsville, Liberty, Stanford, Russellville, Bowling Green, Franklin, Providence, Scottsville, Glasgow, Tompkinsville, Edmonton, Columbia, Jamestown, Burkesville, and Albany 343 PM EDT Tue Jun 29 2021 /243 PM CDT Tue Jun 29 2021/ This hazardous weather outlook is for portions of south central Indiana and Central Kentucky. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Scattered thunderstorms Wednesday with locally gusty winds and heavy rainfall could result in localized flooding issues for any area that sees repeated storm activity. Widespread rain is expected Thursday into Friday as a cold front moves into the region. Scattered storms are expected each day as well, with the main threats once again being heavy rainfall and cloud to ground lightning. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. && More information, along with other weather, hydrological and climate information, can be found at weather.gov/louisville. EBW/CJP
Special Weather Statement
National Weather Service Louisville KY
500 PM EDT Tue Jun 29 2021
INZ077-078-292130-
Washington-Scott-
500 PM EDT Tue Jun 29 2021
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN SCOTT AND
NORTHEASTERN WASHINGTON COUNTIES...
At 459 PM EDT, a strong thunderstorm was located near Salem, moving
northeast at 10 mph.
Winds in excess of 40 mph and pea size hail are possible with this
storm.
Locations impacted include...
Blue River, Little York, New Philadelphia, Farabee, Daisy Hill, South
Boston, Canton, Harristown and New Liberty.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
LAT...LON 3876 8594 3875 8592 3876 8591 3875 8590
3874 8590 3860 8584 3850 8593 3850 8595
3860 8607 3875 8598 3876 8596 3875 8595
TIME...MOT...LOC 2059Z 226DEG 11KT 3862 8599
SCHOETTMERSpecial Weather Statement
National Weather Service Louisville KY
419 PM CDT Tue Jun 29 2021
KYZ070-072-292145-
Logan-Simpson-
419 PM CDT Tue Jun 29 2021
...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT SOUTHWESTERN LOGAN AND
SOUTHWESTERN SIMPSON COUNTIES...
At 419 PM CDT, strong thunderstorms were clustered 9 miles southwest
of Russellville, moving northwest at 70 mph.
Winds in excess of 40 mph are possible with this storm.
Locations impacted include...
Adairville, Gordonsville, Dot, Lickskillet, Schley, Cave Springs,
Keysburg, Schochoh, Oakville and Whippoorwill.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
LAT...LON 3674 8706 3676 8705 3687 8706 3665 8664
3664 8706
TIME...MOT...LOC 2119Z 126DEG 60KT 3675 8701
SCHOETTMERSpecial Weather Statement National Weather Service Louisville KY 521 PM EDT Tue Jun 29 2021 INZ091-092-KYZ030-292145- Floyd-Clark-Jefferson- 521 PM EDT Tue Jun 29 2021 ...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL CLARK...EASTERN FLOYD AND WEST CENTRAL JEFFERSON COUNTIES... At 521 PM EDT, a strong thunderstorm was located over New Albany, moving north at 5 mph. Winds in excess of 40 mph and pea size hail are possible with this storm. Locations impacted include... Louisville, Jeffersonville, New Albany, Clarksville, Sellersburg, Galena, Clark Regional Airport, Cementville and Floyds Knobs. Torrential rainfall is also occurring with this storm, and may cause localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. LAT...LON 3824 8574 3823 8586 3835 8593 3838 8571 TIME...MOT...LOC 2121Z 158DEG 5KT 3831 8579 SCHOETTMER
Special Weather Statement National Weather Service Louisville KY 544 PM EDT Tue Jun 29 2021 INZ091-092-KYZ030-292215- Floyd-Clark-Jefferson- 544 PM EDT Tue Jun 29 2021 ...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL CLARK... SOUTHEASTERN FLOYD AND WEST CENTRAL JEFFERSON COUNTIES... At 544 PM EDT, a strong thunderstorm was located over New Albany. The storm is nearly stationary. Winds in excess of 40 mph and pea size hail are possible with this storm. Locations impacted include... Louisville, Jeffersonville, New Albany, Shively, Parkway Village, St. Dennis, Clarksville, Oak Park and Floyds Knobs. Torrential rainfall is also occurring with this storm, and may cause localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. LAT...LON 3836 8586 3831 8569 3817 8576 3823 8592 TIME...MOT...LOC 2144Z 029DEG 2KT 3826 8581 SCHOETTMER
Special Weather Statement National Weather Service Louisville KY 445 PM CDT Tue Jun 29 2021 KYZ070-072-292215- Logan-Simpson- 445 PM CDT Tue Jun 29 2021 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN LOGAN AND WEST CENTRAL SIMPSON COUNTIES... At 445 PM CDT, a strong thunderstorm was located near Russellville, moving northwest at 10 mph. Wind gusts up to 50 mph and pea size hail are possible with this storm. Locations impacted include... Russellville, Schochoh, Middleton, Oakville, Cave Springs and Lickskillet. Torrential rainfall is also occurring with this storm, and may cause localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. LAT...LON 3688 8689 3679 8666 3667 8680 3674 8701 TIME...MOT...LOC 2145Z 122DEG 8KT 3676 8683 SCHOETTMER
The Louisville radar (KLVX), 40 km away, was scanning. The volume nearest the first event began at 22:07 UTC.
8 thunderstorm wind. Local standard time, as filed.
A picture on social media showed a large limb and power pole down in Clarksville.
Dispatch reported 5 or 6 power poles were down on State Road 64 in Ramsey.
There was a second hand report of trees and power lines down in Depauw.
Trees and power lines were reported down on Totten Ford Road.
A tree was uprooted near Buffalo Trace Park, just east of Palmyra.
Trees and power lines were down in the county.
Trees were down in the Tell City area. One tree fell on a car in Tell City. No injuries were reported.
There was a tree down at the intersection of State Road 264 and 850 South.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2021Every state in 2021This day in weather historyWarnings in Indiana, June 2021
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: 968323, 968331, 968332, 968766, 968767, 968768, 968769, 968770.