Strong to severe thunderstorms developed ahead of an 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.
Strong to severe thunderstorms developed ahead of an 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 17, 12:57 PM EST, 1 hour 36 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Wilmington OH 157 PM EDT Sat Aug 17 2019 .SYNOPSIS... Showers and thunderstorms will be possible today ahead of a disturbance in the upper atmosphere. A chance of thunderstorms will linger Sunday through Tuesday in the persistently humid and unstable airmass. A better chance for thunderstorms will accompany a cold front on Wednesday. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... MCS has been rapidly weakening as it moves towards the forecast area. Looks like it will dissipate before getting through all of the counties. Thicker cloud cover associated with the MCS will cap off temperatures in at least western counties. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SUNDAY/... Bulk of thunderstorms will dissipate this evening with loss of daytime heating. However, thunderstorms will still be possible in northern locations tonight through Sunday afternoon as additional short waves are forecast to ripple along a westerly mid level flow over the persistently unstable airmass. Highs Sunday reaching the upper 80s to lower 90s will combine with dew points in the lower 70s to produce heat indices reaching the mid and upper 90s, warranting a mention in the HWO. && .LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/... Surface frontal boundary to lay out E-W across the Southern Great Lakes along the southern periphery of the belt of westerlies early this week. Can not rule out diurnally driven convection around the periphery of the mid level ridge Monday -- but due to the lack of significant forcing will limit pops to slight chance across the north closer to the frontal boundary. Hot temperatures to continue with H8 temperatures of 20 to 22 DEG C. Expect Mondays fcst highs from near 90 north to the lower 90s south. This will yield max heat indices in the mid and upper 90s. Mid level ridging strengthens over the southwestern United States and a northwest flow pattern develops over the Great Lakes and Ohio Valley at mid week. This will allow for an increased threat for convection as a frontal boundary slips down into the area from the northwest late Tuesday into Wednesday. Tuesday looks to remain hot ahead of this front with highs from the upper 80s northwest to the lower 90s southeast. Maximum heat indices will continue in the mid and upper 90s Tuesday. The threat for convection looks to peak Wednesday when the front is expected to push across the area. The increased chance for pcpn and clouds will mute temperatures with highs Wednesday in the mid and upper 80s. The frontal boundary is expected to push south of the area Wednesday night with high pressure building into the Great Lakes. This will offer cooler and drier air. Fcst highs for Thursday range from the upper 70s northwest to the lower 80s southeast. A considerably drier airmass will be observed as the surface high pressure becomes centered over the area Friday. Surface dewpoints in the 50s will offer much more comfortable conditions with High temperatures ranging from the upper 70s to lower 80s. && .AVIATION /17Z SATURDAY THROUGH WEDNESDAY/... Convection just west of the region will weaken but should still affect KDAY to KCVG/KLUK early in the TAF period. There is the potential for additional convection to move into the region after 00Z. There is quite a bit of uncertainty with this with KDAY having the better chance of being impacted. Outside of convection, VFR will prevail. OUTLOOK...Thunderstorms possible Tuesday and Wednesday. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && SYNOPSIS...Coniglio NEAR TERM... SHORT TERM...Coniglio LONG TERM...AR AVIATION...
Hazardous Weather Outlook National Weather Service Wilmington OH 427 AM EDT Sat Aug 17 2019 INZ073>075-080-KYZ089>100-OHZ073-074-077>082-088-180830- Ripley-Dearborn-Ohio-Switzerland-Carroll-Gallatin-Boone-Kenton- Campbell-Owen-Grant-Pendleton-Bracken-Robertson-Mason-Lewis-Ross- Hocking-Hamilton-Clermont-Brown-Highland-Adams-Pike-Scioto- 427 AM EDT Sat Aug 17 2019 This Hazardous Weather Outlook is for Southeast Indiana, Northeast Kentucky, Northern Kentucky, Central Ohio, South Central Ohio and Southwest Ohio. .DAY ONE...Today and tonight. There is a low probability for widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Heat indices in the middle to upper 90s are expected on Sunday, Monday, and Tuesday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. INZ050-058-059-066-OHZ026-034-035-042>046-051>056-060>065-070>072- 180830- Wayne-Fayette IN-Union IN-Franklin IN-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- 427 AM EDT Sat Aug 17 2019 This Hazardous Weather Outlook is for East Central Indiana, Southeast Indiana, Central Ohio, Southwest Ohio and West Central Ohio. .DAY ONE...Today and tonight. Thunderstorms will be possible this afternoon. Some of the thunderstorms may approach severe limits, with damaging winds being the main threat. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Heat indices in the middle to upper 90s are expected on Sunday, Monday, and Tuesday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
Special Weather Statement National Weather Service Wilmington OH 205 PM EDT Sat Aug 17 2019 OHZ070-171830- Butler OH- 205 PM EDT Sat Aug 17 2019 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN BUTLER COUNTY UNTIL 230 PM EDT... At 205 PM EDT, radar indicated a strong thunderstorm near Ross, moving east at 15 mph. STORM HAZARDS INCLUDE... Winds to 50 mph... Nickel size hail... Locations impacted include... Hamilton, Fairfield, Ross, Dunlap, Millville, St. Charles, Okeana, Alert and Layhigh. 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 3945 8456 3931 8452 3931 8480 3942 8481 TIME...MOT...LOC 1805Z 272DEG 13KT 3937 8473 Novak
Special Weather Statement
National Weather Service Wilmington OH
227 PM EDT Sat Aug 17 2019
OHZ070-077-171900-
Hamilton OH-Butler OH-
227 PM EDT Sat Aug 17 2019
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN HAMILTON AND
SOUTHEASTERN BUTLER COUNTIES UNTIL 300 PM EDT...
At 226 PM EDT, radar indicated strong thunderstorms near Ross,
moving east at 20 mph.
STORM HAZARDS INCLUDE...
Winds to 50 mph...
Nickel size hail...
Locations impacted include...
Cincinnati, Hamilton, Middletown, Fairfield, Forest Park,
Sharonville, Monroe, Blue Ash, Trenton, Springdale, Reading,
Montgomery, North College Hill, Madeira, Wyoming, Mount Healthy, Deer
Park, Finneytown, West Chester and Ross.
This includes the following Interstates...
I-71 in Ohio between mile markers 13 and 17.
I-74 in Ohio near mile marker 12.
I-75 in Ohio between mile markers 10 and 28.
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 3947 8434 3929 8435 3920 8435 3919 8465
3944 8469
TIME...MOT...LOC 1826Z 282DEG 19KT 3935 8461
NovakSpecial Weather Statement
National Weather Service Wilmington OH
252 PM EDT Sat Aug 17 2019
KYZ091>093-OHZ077-078-171915-
Boone KY-Kenton KY-Campbell KY-Hamilton OH-Clermont OH-
252 PM EDT Sat Aug 17 2019
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN KENTON...NORTHERN
CAMPBELL...NORTHERN BOONE...EASTERN HAMILTON AND NORTHWESTERN
CLERMONT COUNTIES UNTIL 315 PM EDT...
At 252 PM EDT, radar indicated a strong thunderstorm over Norwood,
moving southeast at 15 mph.
STORM HAZARDS INCLUDE...
Winds to 45 mph...
Pea size hail...
Locations impacted include...
Cincinnati, Covington, Florence, Independence, Norwood, Forest Park,
Erlanger, Fort Thomas, Newport, Sharonville, Blue Ash, Loveland,
Springdale, Reading, Montgomery, North College Hill, Madeira,
Edgewood, Elsmere and Wyoming.
This includes the following Interstates...
I-71 in Ohio between mile markers 0 and 19.
I-74 in Ohio between mile markers 16 and 19.
I-75 in Kentucky between mile markers 182 and 191.
I-75 in Ohio between mile markers 0 and 17.
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 3930 8448 3930 8439 3929 8436 3929 8434
3928 8426 3927 8426 3927 8424 3907 8431
3893 8455 3906 8470
TIME...MOT...LOC 1852Z 305DEG 12KT 3918 8447
NovakSpecial Weather Statement National Weather Service Wilmington OH 330 PM EDT Sat Aug 17 2019 KYZ093-OHZ077-078-172000- Campbell KY-Hamilton OH-Clermont OH- 330 PM EDT Sat Aug 17 2019 ...A STRONG THUNDERSTORM WILL AFFECT NORTHERN CAMPBELL...SOUTHEASTERN HAMILTON AND WEST CENTRAL CLERMONT COUNTIES UNTIL 400 PM EDT... At 330 PM EDT, radar indicated a strong thunderstorm over Forestville, moving southeast at 20 mph. STORM HAZARDS INCLUDE... Winds to 40 mph... Locations impacted include... Cincinnati, Forestville, Amelia, Mariemont, New Richmond, Terrace Park, Batavia, Silver Grove, Melbourne, Salem Heights, Riverbend And Coney Island, Withamsville, Plainville, Coldstream, Cold Spring, The Village of Indian Hill, Newtown, Sherwood, Crestview and New Palestine. 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 3904 8444 3916 8435 3909 8409 3891 8420 TIME...MOT...LOC 1930Z 299DEG 16KT 3909 8432 Novak
The Cincinnati radar (KILN), 55 km away, was scanning. The volume nearest the first event began at 19:33 UTC.
1 thunderstorm wind. Local standard time, as filed.
A tree and a large branch were blown down.
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: 837417.