Thunderstorms developed near a warm front that was 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.
Thunderstorms developed near a warm front that was 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 20, 3:37 PM EST, 5 minutes earlier.
Area Forecast Discussion National Weather Service Wilmington OH 437 PM EDT Wed Jun 20 2018 .SYNOPSIS... A cold front will push south into the region today. The front will stall out near the Ohio River tonight, and will remain in the vicinity of the Ohio River into Thursday. A low pressure system is expected to move through the region Friday into Saturday. && .NEAR TERM /UNTIL 6 AM THURSDAY MORNING/... Showers and thunderstorms are for the most part splitting the area. Weak surface low pressure is currently located across central Ohio in tandem with an upper level disturbance. PWATs are around 1.9" across the region (above the 90th percentile for this time of year). Low level shear is weak, but mean winds are around 20 kts and with surface delta-theta e around -20C, any storms could produce some gusty winds. The best DCAPE currently resides across northern Kentucky (around 1000 J/kg according to the SPC mesoanalysis), which would tend to make this area the most prone to stronger wind gusts this afternoon. Due to the mentioned above have kept the HWO with mentions of gusty winds (wet microbursts) and locally heavy rainfall. This evening the low will pull east with the surface cold front slowly sagging south. As this happens convection will likely pull south into central Ohio again. The front will then stall just north of the Ohio river. The NMM has the front peppered with convection while the ARW doesn't show much. The HRRR is in the middle. Instability at this time isn't great, but still sufficient. Also, there is still weak surface convergence. Given this have kept the forecast wet into the evening/ morning hours. && .SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/... Thursday morning a stacked upper level low pressure will be approaching from the west. As the low approaches the stalled front will turn around and head northeast. As this occurs an arm of PV will pivot northeast bringing a shield of precipitation with it. Looking at forecast soundings, instability isn't anything too impressive, but will be sufficient for widespread showers with embedded thunder. QPF totals from the event will likely average around 0.5" to 1.0", with locally heavier totals. For now soil moisture look like they should be able to handle this. && .LONG TERM /FRIDAY THROUGH WEDNESDAY/... Upper low over the mid Mississippi Valley at the beginning of the period will open up and lift into the eastern Great Lakes by Saturday. This will result in numerous showers and thunderstorms across the region Friday into Friday night. Coverage will decrease by Saturday, but precipitation will linger, especially across northeastern counties into the afternoon. 12Z guidance showing differences in amplitude of next short wave quickly following, with the GFS being more energetic. This results in a stronger surface reflection and thus further north progress of precipitation on Sunday. With uncertainty have leaned towards an ensemble mean which still keeps higher PoPs across the southern counties. Once this system passes, high pressure will build in for Monday and Tuesday. As this moves off to the east, a front approaching from the west may get close enough to bring some showers and thunderstorms into western counties by later Wednesday. Clouds and precipitation will keep highs a bit below normal but lows a bit above normal early in the period. Drier airmass will allow for a larger diurnal range with highs gradually warming next week with lows closer to normal. && .AVIATION /20Z WEDNESDAY THROUGH MONDAY/... Showers and thunderstorms have formed across the Ohio Valley this morning ahead of an approaching area of low pressure. Coverage has been more robust than initially expected towards KCVG, but thinking is still that coverage will be best towards KCMH/ KLCK (or closer to the surface low). The surface low will continue to pull east this afternoon along a cold front which will slowly sag south this afternoon into evening. The primary chance of precipitation looks to be along the surface low with a secondary chance of showers and thunderstorms possible along the cold front. Storms from the surface low will continue this afternoon from the surface low and then concentrate this evening along the cold front. Due to the mentioned above have trended the CMH/ LCK tafs towards more thunder. In any cells that do form gusty winds will be possible thanks to more than sufficient DCAPE (higher values across northern Kentucky). Overnight into Thursday morning the cold front will sag south with MVFR ceilings forming along the front. As the front sags south, a fair amount of uncertainty exists on how much coverage will occur along the front. The NMM is the most robust with convection, while the ARW and HRRR are less so. A potent vertically stacked low will approach the area from the west with the cold front turning around and heading northeast. For now have just added this mention into the CVG taf. OUTLOOK...Showers and thunderstorms possible at times through Sunday. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && SYNOPSIS...Haines NEAR TERM...Haines SHORT TERM...Haines LONG TERM... AVIATION...Haines
Hazardous Weather Outlook National Weather Service Wilmington OH 1014 AM EDT Wed Jun 20 2018 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-211415- 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- 1014 AM EDT Wed Jun 20 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...Today and Tonight. Showers and thunderstorms are expected again today. A few strong to severe storms may occur during the afternoon and evening with the primary threat of damaging winds. In addition, where heavy rainfall occurs, there will be the potential for flash flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
Special Weather Statement
National Weather Service Wilmington OH
313 PM EDT WED JUN 20 2018
KYZ094-095-201945-
Owen KY-Grant KY-
313 PM EDT WED JUN 20 2018
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN GRANT AND
SOUTHEASTERN OWEN COUNTIES UNTIL 345 PM EDT...
At 313 PM EDT, radar indicated a strong thunderstorm 8 miles
southeast of Owenton, moving east at 30 mph.
STORM HAZARDS INCLUDE...
Winds to 40 mph...
Very heavy rain...
Locations impacted include...
Owenton, Corinth, Keefer, Elk Lake, Beechwood, New Columbus, Harmony,
Natlee and Cordova.
This includes I-75 in Kentucky between mile markers 144 and 148.
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 3835 8481 3853 8484 3855 8448 3854 8448
3851 8449 3851 8452 3849 8456 3843 8463
3842 8465 3837 8471 3835 8476
TIME...MOT...LOC 1913Z 261DEG 25KT 3846 8473
SitesSpecial Weather Statement
National Weather Service Wilmington OH
322 PM EDT WED JUN 20 2018
KYZ097>099-201945-
Robertson KY-Mason KY-Bracken KY-
322 PM EDT WED JUN 20 2018
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN MASON...ROBERTSON AND
SOUTHWESTERN BRACKEN COUNTIES UNTIL 345 PM EDT...
At 322 PM EDT, radar indicated a strong thunderstorm 9 miles south of
Brooksville, moving southeast at 25 mph.
STORM HAZARDS INCLUDE...
Winds to 40 mph...
Very heavy rain...
Locations impacted include...
Lewisburg, Mount Olivet, Sardis, US Route 62 at State Route 875, Blue
Licks Battlefield, Abigail, Milford, Murphysville, Burika, Mount
Gilead, Alhambra, Mays Lick, Mitchells Mill, Santa Fe, Peed,
Fleming-Mason Airport, Lowell, Helena, Kentontown and Petra.
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 3844 8402 3846 8410 3848 8413
3848 8415 3849 8415 3848 8417 3850 8416
3850 8418 3856 8416 3855 8421 3865 8415
3853 8364 3852 8364 3846 8386 3849 8393
3845 8398 3842 8400
TIME...MOT...LOC 1922Z 292DEG 20KT 3855 8411
SitesSpecial Weather Statement
National Weather Service Wilmington OH
343 PM EDT WED JUN 20 2018
KYZ098-099-202015-
Robertson KY-Mason KY-
343 PM EDT WED JUN 20 2018
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN MASON AND ROBERTSON
COUNTIES UNTIL 415 PM EDT...
At 343 PM EDT, radar indicated a strong thunderstorm near Fairview,
moving southeast at 25 mph.
STORM HAZARDS INCLUDE...
Winds to 40 mph...
Very heavy rain...
Locations impacted include...
Sardis, Peed, Blue Licks Battlefield, Abigail, Burika, Helena,
Alhambra, Mays Lick, Mitchells Mill, Blue Licks Springs and US Route
62 at State Route 616.
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 3844 8402 3844 8403 3845 8405
3859 8399 3852 8367 3846 8386 3849 8393
3845 8398 3844 8398 3842 8400
TIME...MOT...LOC 1943Z 292DEG 20KT 3850 8397
SitesSpecial Weather Statement
National Weather Service Wilmington OH
436 PM EDT WED JUN 20 2018
KYZ100-OHZ081-088-202100-
Lewis KY-Scioto OH-Adams OH-
436 PM EDT WED JUN 20 2018
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT LEWIS...SOUTHEASTERN
ADAMS AND SCIOTO COUNTIES UNTIL 500 PM EDT...
At 436 PM EDT, radar indicated strong thunderstorms along a line
extending from 7 miles northwest of Lucasville to Goddard, moving
east at 30 mph.
STORM HAZARDS INCLUDE...
Winds to 40 mph...
Pea size hail...
Very heavy rain...
Locations impacted include...
Portsmouth, Wheelersburg, New Boston, Vanceburg, South Webster, Head
of Grassy, Rosemount, Clarktown, Camp Dix, Lucasville, Sciotodale,
Franklin Furnace, Otway, Saint Paul, Minford, Kinniconick,
Friendship, Mcdermott, Charters and Petersville.
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 3832 8336 3840 8341 3838 8345 3840 8348
3843 8358 3896 8310 3894 8275 3886 8276
3885 8265 3863 8285 3874 8287 3876 8289
3873 8303 3868 8303 3862 8308 3860 8307
3843 8324 3833 8325
TIME...MOT...LOC 2036Z 271DEG 27KT 3893 8312 3836 8362
SitesThe Cincinnati radar (KILN), 94 km away, was scanning. The volume nearest the first event began at 20:41 UTC.
2 thunderstorm wind. Local standard time, as filed.
Two trees were knocked down on Robert Lucas Road in Lucasville.
A large tree was knocked down into a power pole on Riddlebarger Road. Power lines were knocked down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2018Every state in 2018This day in weather historyWarnings in Ohio, 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: 753308, 753309.