Thunderstorms developed on a stationary boundary in a moist and unstable atmosphere.
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.
Thunderstorms developed on a stationary boundary in a moist and unstable atmosphere.
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 12, 1:05 AM EST, 1 hour 10 minutes earlier.
Area Forecast Discussion National Weather Service Wilmington OH 205 AM EDT Tue Jun 12 2018 .SYNOPSIS... A surface boundary and weak disturbances will combine to result in chances for showers and thunderstorms into Wednesday. The front will push through the area offering a temporary dry period at mid week. && .NEAR TERM /UNTIL 6 AM THIS MORNING/... Upper level elongated shearing vorticity axis is still resulting in some showers across the southern/southwestern CWFA this evening. Weak moist ascent will develop overnight, and with the remnants of an upstream thunderstorm complex nearing the southwest CWFA, this may be enough to keep the atmosphere disturbed for a higher chance of showers/slight chance of thunderstorms there. Expect lows from the lower/middle 60s north to the upper 60s southwest. && .SHORT TERM /6 AM THIS MORNING THROUGH 6 PM WEDNESDAY/... Upper level low stalled over Indiana which begins to lift north late tonight opens up and lifts north into the Great Lakes Tuesday. Surface wave develops with stalled front lifting north during the day. Moderate instability develops in the moist warm sector Tuesday afternoon. Thunderstorm chances increase across the area. In the warm sector expect highs from the lower 80s northeast to the mid 80s southwest. As the mid level s/w pushes through the Great Lakes an associated sfc cold front will begin to push into the northwest late. Likely pops in the southeast early with diminishing pops from the northwest overnight. Mild temperatures to continue in the moist environment with lows in the middle and upper 60s. && .LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/... A slight change in pattern will be occurring on Wednesday in the Ohio Valley. A 500mb wave will be moving east through the region, with an area of greater deep-layer moisture along extending near and perhaps just behind the wave. Precipitation associated with this feature may already be leaving the ILN CWA by Wednesday morning, but that will not completely end the chances for showers and storms, as a surface cold front will still be upstream. This front should pass through the area by evening, and could produce some additional precipitation. Nonetheless, conditions may not be as favorable for widespread deep convection as at times over the past week. Dry high pressure is expected to move into the area behind the cold front, although the air mass change will only be marginal -- a very slight drop in temperatures and perhaps a 6-to-8-degree drop in dewpoints. Within an amplifying upper level pattern, in which the Ohio Valley will be downstream of a plains ridge, the surface high appears likely to stick around for a couple days -- leading to dry conditions Thursday, and probably a decent chance of dry conditions again on Friday. This forecast will keep only 20-PoPs in the forecast for Friday. Beyond Friday, a dirty ridge type of weather pattern appears to be setting up in the area, with a stalled 500mb ridge (possibly a closed high) centering over the lower Ohio Valley and middle Mississippi Valley. Over the past couple days, GFS/ECMWF projections have been inconsistent on the amounts of instability and precipitation that may develop underneath this ridge, leading to low confidence in convective forecasts for Saturday, Sunday, and Monday. Keeping with the previous forecast, Saturday appears likely to be dry, but some low-end PoPs will be kept in for Sunday and Monday due to uncertainty. The temperature forecast is fairly consistent through the entire extended forecast period, with highs generally in the mid 80s through the end of the week, then increasing slightly during the weekend. Min temps will be a little cooler in the slightly drier air behind the front on Wednesday night and Thursday night (lower to mid 60s) but as dewpoints increase going into the weekend, an increase to the middle to upper 60s for min temps should occur. && .AVIATION /06Z TUESDAY THROUGH SATURDAY/... Ongoing convection in southeast Indiana and northern Kentucky will continue through the early morning hours and will brush CVG. Added a tempo TSRA with MVFR vsbys to cover the possibility of a thunderstorm affecting the airport. Farther to the north IFR stratus has developed across ILN and DAY. This is expected to build into CMH/LCK by 12Z as a MVFR ceiling. The stratus will lift after 12Z, reaching VFR by 16Z. An upper level disturbance will drop down into the the region this afternoon. As the atmosphere destabilizes, expect scattered showers and thunderstorms to develop again. Kept the previous VCTS going. Convection should start to calm down after midnight. OUTLOOK...Thunderstorms possible Tuesday night into Wednesday. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && SYNOPSIS...Hickman/AR NEAR TERM...Hickman SHORT TERM...AR LONG TERM...Hatzos AVIATION...Sites
Hazardous Weather Outlook National Weather Service Wilmington OH 309 PM EDT Mon Jun 11 2018 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-121915- 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- 309 PM EDT Mon Jun 11 2018 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...This Afternoon and 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.
The Indianapolis radar (KIND), 112 km away, was scanning. The volume nearest the first event began at 07:14 UTC.
2 flood, 1 flash flood. Local standard time, as filed.
High water was reported on U.S. 50 at Route 421, just west of Versailles. Also east of Versailles, high water was reported on the eastbound lane of U.S. 50.
High water was reported on Route 262.
High rushing water was reported along State Route 62 and Davies Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2018Every state in 2018This day in weather historyWarnings in Indiana, June 2018
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: 749946, 753733, 753734.