Slow moving showers and thunderstorms developed in the vicinity of a stalled frontal boundary which was draped across the region.
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 ILN wrote it up.
Slow moving showers and thunderstorms developed in the vicinity of a stalled frontal boundary which was draped across the region.
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 Wilmington, OH wrote its last area forecast discussion before the first event at Jun 29, 8:30 PM EST, 2 hours 55 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Wilmington OH 930 PM EDT Mon Jun 29 2020 .SYNOPSIS... A weak boundary will remain in the region through Tuesday which will serve as a focus for showers and thunderstorms. High pressure building in from the north will then bring slightly drier air to the area. Temperatures will get even warmer by late in the week. && .NEAR TERM /UNTIL 6 AM TUESDAY MORNING/... An impressive instability axis is in place across southwest portions of our area with ml capes still in the 3000 j/kg range. Along the instability gradient and in an area of several outflow boundaries, we are still seeing some isolated to scattered showers and thunderstorms persisting along a northwest to southeast axis through central portions of our fa. These should gradually weaken through the overnight period but they may be slow to wind down so will hang onto at least some slight chance pops into the early morning hours. Meanwhile, a weak frontal boundary situated just off to our southwest will lift slowly northeast overnight. More widespread shower and thunderstorm activity along this boundary should also slowly weaken overnight, but some of the activity will still likely affect our far southwest as we head through the night. Given the high moisture content and slow moving/training storms, some locally heavy rainfall will be possible across our far southwest tonight. && .SHORT TERM /6 AM TUESDAY MORNING THROUGH TUESDAY NIGHT/... Latest guidance has trended a bit further east with the primary low level focus for showers and thunderstorms on Tuesday. Expect fairly good coverage to develop during the afternoon in about the southwestern half of the forecast area. There will then be a quick transition heading northeast as drier air will remain across central Ohio. Showers and storms will gradually diminish through Tuesday evening and into the overnight. Showers and thunderstorms will likely keep highs in the mid 80s across southwest counties while central Ohio will once again be near 90. Lows will be near persistence. && .LONG TERM /WEDNESDAY THROUGH MONDAY/... For the extended period, ensemble guidance with both the EPS and 12Z GEFS has shifted drier to start the period, as the persistent convergent boundary in the southwest parts of the forecast area shifts to the south and dry air pushes into the region. This is best represented by the deterministic GFS, with PWATs dropping to near an inch by late Wednesday and below an inch on Thursday. The blend lagged behind these changes, so decided to meet in the middle by adjusting the NBM down a bit on Wednesday into Thursday. This leaves a relatively dry and very warm forecast starting Thursday and continuing through the weekend as mid level ridging broadens into the Ohio Valley from the central U.S. Temperatures will respond to this drier air, with highs on Saturday and Sunday now expected to reach into the low 90s. The central states ridge flattens heading into early next week, so an increase in the westerlies brings a better chance of storms Monday afternoon. As deep moisture increases, high temps back off a bit into the upper 80s. && .AVIATION /01Z TUESDAY THROUGH SATURDAY/... Isolated shower activity across the area early this evening should gradually dissipate over the next several hours as we lose the daytime heating. More scattered activity off to our southwest may work slowly northeast toward our area through tonight but it too should gradually weaken. It may get up close to KCVG/KLUK though, so will carry a period of vcsh tonight to account for this. Some areas of mainly MVFR fog will also be possible later tonight into early Tuesday morning, especially across southwest portions of the area. Otherwise, a weak northwest to southeast oriented boundary will remain situated across the region into Tuesday. This will likely lead to some additional scattered shower and thunderstorm development as we head through Tuesday afternoon, with the best chance again being at the southwestern TAF sites. OUTLOOK...No significant weather expected. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && SYNOPSIS... NEAR TERM...JGL SHORT TERM... LONG TERM...Hogue AVIATION...JGL
Hazardous Weather Outlook National Weather Service Wilmington OH 1158 PM EDT Mon Jun 29 2020 INZ050-OHZ026-034-035-042>046-051>056-060>065-071>074-080-082-088- 010400- Wayne-Hardin-Mercer-Auglaize-Darke-Shelby-Logan-Union OH-Delaware- Miami-Champaign-Clark-Madison-Franklin OH-Licking-Preble-Montgomery- Greene-Fayette OH-Pickaway-Fairfield-Warren-Clinton-Ross-Hocking- Highland-Pike-Scioto- 1158 PM EDT Mon Jun 29 2020 This Hazardous Weather Outlook is for East Central Indiana, Central Ohio, South Central Ohio, Southwest Ohio and West Central Ohio. .DAY ONE...Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. INZ058-059-066-073>075-080-KYZ089>100-OHZ070-077>079-081-010400- Fayette IN-Union IN-Franklin IN-Ripley-Dearborn-Ohio-Switzerland- Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-Pendleton-Bracken- Robertson-Mason-Lewis-Butler-Hamilton-Clermont-Brown-Adams- 1158 PM EDT Mon Jun 29 2020 This Hazardous Weather Outlook is for East Central Indiana, Southeast Indiana, Northeast Kentucky, Northern Kentucky, South Central Ohio and Southwest Ohio. .DAY ONE...Tonight. Showers and thunderstorms overnight may result in locally heavy rainfall that could result in localized flooding. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. There is a low probability for widespread hazardous weather. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1007 PM EDT MON JUN 29 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0945 PM HEAVY RAIN 6 N LEESBURG 39.43N 83.55W
06/29/2020 M1.65 INCH FAYETTE OH MESONET
MESONET STATION EW6534 LEESBURG.
&&Special Weather Statement
National Weather Service Wilmington OH
1053 PM EDT Mon Jun 29 2020
OHZ078>080-300330-
Clermont OH-Highland OH-Brown OH-
1053 PM EDT Mon Jun 29 2020
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN CLERMONT...NORTHERN
BROWN AND SOUTHWESTERN HIGHLAND COUNTIES UNTIL 1130 PM EDT...
At 1053 PM EDT, radar indicated a strong thunderstorm 8 miles
southwest of Lynchburg, moving south at 10 mph.
STORM HAZARDS INCLUDE...
Winds to 40 mph...
Frequent cloud-to-ground lightning...
Very heavy rain...
Locations impacted include...
Mount Orab, Williamsburg, Lynchburg, Sardinia, Russell, Woodville,
Newtonsville, Mowrystown, Fayetteville, St. Martin, Chasetown,
Danville in Highland County, Greenbush, Buford, State Route 32 at US
Route 68, Edenton and Lake Lorelei.
Do not stay in the open or seek shelter under trees when lightning
threatens. Move indoors when a thunderstorm approaches.
Water will pond on roads and may quickly fill roadside ditches and
small streams.
To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.
LAT...LON 3902 8400 3917 8414 3926 8404 3925 8384
3922 8384 3922 8381 3924 8379 3923 8369
3900 8370
TIME...MOT...LOC 0253Z 017DEG 9KT 3916 8390
KCSpecial Weather Statement
National Weather Service Wilmington OH
1118 PM EDT Mon Jun 29 2020
OHZ078>080-300345-
Clermont OH-Highland OH-Brown OH-
1118 PM EDT Mon Jun 29 2020
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN CLERMONT...CENTRAL
BROWN AND SOUTHWESTERN HIGHLAND COUNTIES UNTIL 1145 PM EDT...
At 1118 PM EDT, radar indicated a strong thunderstorm over
Williamsburg, moving south at 20 mph.
STORM HAZARDS INCLUDE...
Winds to 50 mph...
Frequent cloud-to-ground lightning...
Very heavy rain...
Locations impacted include...
Georgetown, Mount Orab, Bethel, Williamsburg, Sardinia, Hamersville,
Mowrystown, Greenbush, Saltair, Lake Waynoka, East Fork State Park,
Buford, Nicholsville, State Route 32 at US Route 68, Point Isabel,
Fincastle, State Route 32 at US Route 62, Bantam, New Hope and Locust
Ridge.
Do not stay in the open or seek shelter under trees when lightning
threatens. Move indoors when a thunderstorm approaches.
Water will pond on roads and may quickly fill roadside ditches and
small streams.
To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.
LAT...LON 3913 8403 3911 8370 3892 8370 3887 8414
3902 8421
TIME...MOT...LOC 0318Z 013DEG 19KT 3903 8404
KCSpecial Weather Statement
National Weather Service Wilmington OH
1216 AM EDT Tue Jun 30 2020
KYZ096>099-OHZ078-079-300445-
Pendleton KY-Robertson KY-Mason KY-Bracken KY-Clermont OH-Brown OH-
1216 AM EDT Tue Jun 30 2020
...A STRONG THUNDERSTORM WILL AFFECT WESTERN MASON...ROBERTSON...
BRACKEN...EASTERN PENDLETON...SOUTH CENTRAL CLERMONT AND SOUTHWESTERN
BROWN COUNTIES UNTIL 1245 AM EDT...
At 1215 AM EDT, radar indicated a strong thunderstorm near
Brooksville, moving south at 20 mph.
STORM HAZARDS INCLUDE...
Winds to 45 mph...
Very heavy rain...
Locations impacted include...
Falmouth, Augusta, Brooksville, Morgan, Mount Olivet, Higginsport,
Germantown, Sardis, Neville, Chilo, Browning Corner, Bradford,
Burika, Stonewall, Powersville, Johnsville, Piqua, Hittville, US
Route 62 at State Route 875 and Woolcutt.
Water will pond on roads and may quickly fill roadside ditches and
small streams.
To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.
LAT...LON 3843 8400 3846 8410 3848 8413 3848 8415
3849 8417 3850 8416 3850 8418 3856 8416
3855 8421 3858 8421 3856 8441 3854 8443
3883 8432 3879 8390 3846 8386 3849 8393
3842 8400
TIME...MOT...LOC 0415Z 021DEG 19KT 3875 8410
ARThe Cincinnati radar (KILN), 77 km away, was scanning. The volume nearest the first event began at 04:23 UTC.
1 thunderstorm wind, 1 flash flood, 1 flood. Local standard time, as filed.
Several reports of downed trees were received in the Foster Area.
A portion of the AA Highway near Foster was washed out. Western Route 8 also had high water and Ruf Road was washed out.
Five inches of water was flowing down the street and sidewalks.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kentucky in 2020Every state in 2020This day in weather historyWarnings in Kentucky, June 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: 891212, 891207, 891209.