Thunderstorms developed as a surface trough of low pressure combined with an exiting upper level disturbance.
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 as a surface trough of low pressure combined with an exiting upper level disturbance.
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 Aug 7, 1:14 PM EST, 27 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Wilmington OH 214 PM EDT Wed Aug 7 2019 .SYNOPSIS... A weak frontal boundary will allow for showers and storms across portions of the region today. A cold front will cross south through the region Thursday. High pressure over the Upper Midwest will strengthen and settle over the northern Ohio Valley on Saturday. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... A weak frontal boundary is situated near Interstate 71 this morning. Generally northwest of this boundary are clear skies or cu formation. Southeast of this boundary stratus has been more widespread with some vsbys restrictions still present. Near and in advance of this boundary is where the focus for scattered shower and thunderstorm develop will be present for the afternoon and early evening hours. With cloud cover and the boundary in place today temperatures are expected to be in the lower 80s across a large portion of the region with a few mid 80 readings across the tri-state and up into portions of the Miami Valley where there will be a few more breaks in the clouds. && .SHORT TERM /6 PM THIS EVENING THROUGH THURSDAY NIGHT/... Any rain present early in the evening will not make it to midnight and is only expected to affect the Scioto Valley eastward. A few breaks in the clouds will be possible in the late day and overnight hours, but cloud cover will increase by daybreak from the northwest as a secondary cold front approaches. Overnight lows will still remain in the 60s but be in the lower 60s for most locations. Thursday will be marked by a frontal passage from north to south. Storms that fire along this front will have favorable wind profiles to become severe, as they will combine with moist air on southwest winds and a de-stabilization of the boundary layer with daytime heating. The strongest rotating cells that develop may become supercellular and produce damaging winds and support large hail. Highs will be in the lower 80s north to mid 80s south. The front should be along the Ohio River in the evening with a continued but slowing southward progression. Storms that last into the evening will be south of the I-70 corridor and weaken as the atmosphere stratifies in the cold air and loses any heating component. Overnight lows will drop to the upper 50s in the northern half of the CWA, low 60s along and south of the Ohio River. && .LONG TERM /FRIDAY THROUGH TUESDAY/... By Friday the front should be south of our area but models show a persistent chance of showers over the far southern CWA early on. In the cold advection behind the front, highs will be nicely cooler within a few degrees of 80 and markedly drier with dewpoints in the 50s and lower 60s. Surface high pressure will build east into the region Friday night into Saturday, before shifting off to the east on Sunday. This will keep our fa dry through the weekend with a gradual moderation in temperatures. Highs on Saturday will be 80-85, warming to the mid 80s Sunday. Short wave energy entering the region from the northwest will bring a chance of showers late Sunday into early Monday, but timing, position, and strength of this feature is in a large state of flux between models. Confidence in the forecast sensible weather on a shortwave developing in zonal northwest flow is low. After this, high pressure settles north of the area and keeps a generally dry forecast in the offing for next week. Sunny skies in the drier airmass will permit highs on Monday and Tuesday to reach back into the mid to upper 80s. Additional shortwave energy may permit storms to develop on the southern edge of the high pressure's influence, possibly affecting the southern half of the CWA late in the forecast. && .AVIATION /18Z WEDNESDAY THROUGH MONDAY/... A boundary is situated near KCVG, KLUK, KILN, KCMH, and KLCK. Thunderstorms have developed near KCMH and KLCK and have thunderstorm in the TAFs at the start of the TAF period. At the other area TAF sites expect the boundary to shift eastwards before thunderstorm development begins. Dry conditions are expected for the overnight hours. There will be the potential for some fog at KCVG, KLUK, and KILN. Have the lowest vsbys at KLUK with the river valley location. Another system will move through on Thursday. Most of the thunderstorms will hold off until after the end of the TAF period, however have some VCTS in at the end of the KCMH and KLCK TAF periods and at the end of the longer KCVG TAF period. Winds will also pick up during the day on Thursday with wind gusts around 20 to 25 knots. OUTLOOK...Thunderstorms possible Thursday afternoon and night. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && SYNOPSIS...Franks NEAR TERM...Novak SHORT TERM...Franks LONG TERM...Franks AVIATION...Novak
Hazardous Weather Outlook National Weather Service Wilmington OH 520 AM EDT Wed Aug 7 2019 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-080930- 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- 520 AM EDT Wed Aug 7 2019 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. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. A cold front will cross the region on Thursday. Showers and thunderstorms that develop along the front will have a potential for damaging winds and large hail in the strongest storms. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
Special Weather Statement National Weather Service Wilmington OH 135 PM EDT Wed Aug 7 2019 OHZ054-055-071800- Madison OH-Franklin OH- 135 PM EDT Wed Aug 7 2019 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN FRANKLIN AND EAST CENTRAL MADISON COUNTIES UNTIL 200 PM EDT... At 134 PM EDT, radar indicated a strong thunderstorm near Jefferson, moving northeast at 5 mph. STORM HAZARDS INCLUDE... Winds to 40 mph... One half inch diameter hail... Frequent cloud-to-ground lightning... Very heavy rain... Locations impacted include... Jefferson, West Jefferson, Lake Darby, Georgesville, Lilly Chapel, Darbydale, Big Plain and Wrightsville. 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. Residents in these areas should remain alert. If this storm becomes stronger, then a warning may be needed. 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 3982 8328 3995 8337 3997 8324 3986 8316 TIME...MOT...LOC 1734Z 223DEG 6KT 3989 8325 Binau
The Cincinnati radar (KILN), 126 km away, was scanning. The volume nearest the first event began at 18:42 UTC.
1 flash flood. Local standard time, as filed.
High water was reported over a few roads in town.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2019Every state in 2019This day in weather historyWarnings in Ohio, August 2019
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: 834139.