Thunderstorms developed ahead of a cold front moving through the Ohio Valley. Some of the storms produced heavy rainfall.
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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 ILN wrote it up.
Thunderstorms developed ahead of a cold front moving through the Ohio Valley. Some of the storms produced heavy rainfall.
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 30, 5:58 AM EST, 2 hours 17 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Wilmington OH 658 AM EDT Wed Jun 30 2021 .SYNOPSIS... Showers and thunderstorms are forecast to develop today and continue through Thursday as a cold front travels from the Great Lakes to the Ohio Valley. Cooler and drier weather is expected to accompany high pressure for Friday and Saturday. Warmer temperatures return next week when the high tracks east. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... A humid and unstable airmass remain in place over the ILN forecast area. Isolated to scattered showers and thunderstorms, some with heavy downpours, should continue through the morning hours. For this afternoon, showers and thunderstorms are forecast to become numerous as convergence, mid level wind flow, and PVA increase ahead of a cold front approaching from the northwest. Strong wind gusts and heavy downpours are likely to accompany some of the thunderstorms organized by a 500 mb flow around 35 knots. Temperatures will be cooler than the last few days, with highs in the low to mid 80s limited by cloud cover and modest cold advection. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM THURSDAY/... Showers and thunderstorms will be likely to categorical tonight through Thursday as a cold front pushes through a moist and unstable airmass. Heavy downpours will persist from an environment containing 1.5 inches PWAT. Downbursts will be possible Thursday with model soundings showing mid level drying positioned under a strengthening upper jet, though marginal instability may be a limiting factor. After overnight lows in the upper 60s tonight, cooler than normal highs in the mid to upper 70s may be observed on Thursday. && .LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/... Deep positively tilted mid level trough will pass across the region at the beginning of the period, pivoting into a closed low over New England. Associated surface front will likely be in the southern part of the forecast area at the beginning of the period and push to the southeast later Thursday night. This front will take remaining showers and thunderstorms with it. High pressure building south through the Mississippi Valley will spread into the region on Friday and remain into the weekend. Energy dropping down the back side of the mid level trough could still possibly bring some showers and thunderstorms to central Ohio either Friday or Saturday. Temperatures will be below normal through Saturday night. Broad mid level ridging will build in for the remainder of the period. This will bring a quick transition to above normal temperatures and increased humidity. There are indications that there could be diurnal convection Monday and Tuesday, although confidence is fairly low that far out in time. && .AVIATION /12Z WEDNESDAY THROUGH SUNDAY/... Showers and thunderstorms in the vicinity and perhaps BR are ongoing to start the forecast. Categorical showers are expected at all sites by 21z as a band of widespread moisture and lift congeals ahead of a front arriving from the northwest. DAY has the best chance for thunderstorms later this morning to early afternoon. MVFR ceilings are forecast to develop late early Thursday morning as the boundary layer approaches saturation. ILN ceilings may occur at ILN. Winds remaining 10 knots or less will generally have a westerly component. Stronger gusts could be observed if thunderstorms occur near airports. .OUTLOOK...Thunderstorms possible through Saturday. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && SYNOPSIS...Coniglio NEAR TERM...Coniglio SHORT TERM...Coniglio LONG TERM... AVIATION...Coniglio
Hazardous Weather Outlook National Weather Service Wilmington OH 405 AM EDT Wed Jun 30 2021 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-010815- Wayne-Fayette IN-Union IN-Franklin IN-Ripley-Dearborn-Ohio- Switzerland-Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant- Pendleton-Bracken-Robertson-Mason-Lewis-Hardin-Mercer-Auglaize-Darke- Shelby-Logan-Union OH-Delaware-Miami-Champaign-Clark-Madison- Franklin OH-Licking-Preble-Montgomery-Greene-Fayette OH-Pickaway- Fairfield-Butler-Warren-Clinton-Ross-Hocking-Hamilton-Clermont-Brown- Highland-Adams-Pike-Scioto- 405 AM EDT Wed Jun 30 2021 This Hazardous Weather Outlook is for East Central Indiana, Southeast Indiana, Northeast Kentucky, Northern Kentucky, Central Ohio, South Central Ohio, Southwest Ohio and West Central Ohio. .DAY ONE...Today and tonight. Showers and thunderstorms are likely today. A few of the storms may become strong to severe during the afternoon and evening. The primary threat is strong to damaging winds. Locally heavy rainfall will also be possible. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Locally heavy rainfall and strong wind gusts may accompany thunderstorms on Thursday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The Cincinnati radar (KILN), 54 km away, was scanning. The volume nearest the first event began at 13:15 UTC.
5 flood, 1 flash flood. Local standard time, as filed.
High water was reported on Wolf Creek Pike and Little Richmond Road.
High water was reported on Eaton Lewisburg Pyrmont Road.
High water was reported on Foraker Avenue.
High water was reported on Reily Road and Glenway Avenue.
High water was reported on Adams Road.
Several vehicles were trapped and stranded due to high water along I-75, near mile marker 5.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2021Every state in 2021This day in weather historyWarnings in Ohio, 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: 958177, 958179, 958180, 958181, 958182, 958183.