Showers and thunderstorms developed ahead of a strengthening surface low which moved from the Middle Mississippi Valley into Northwest Ohio.
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.
Showers and thunderstorms developed ahead of a strengthening surface low which moved from the Middle Mississippi Valley into Northwest Ohio.
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 Apr 5, 2:44 PM EST, 2 hours earlier.
Area Forecast Discussion National Weather Service Wilmington OH 344 PM EDT Wed Apr 5 2017 .SYNOPSIS... A low pressure system over the mid Mississippi Valley will move northeast into northern Ohio tonight, bringing showers and thunderstorms to the area. A much cooler airmass will settle into the region Thursday into Friday with rain on Thursday changing to snow Thursday night before tapering off on Friday. A drier airmass and warmer temperatures will return for the weekend. && .NEAR TERM /UNTIL 6 AM THURSDAY MORNING/... Low pressure was located near St. Louis MO early this afternoon, with a warm front extending eastward through central Kentucky. While the CWA is north of the warm front at 19Z, this warm front is expected to lift to the north as low pressure moves through/into southern IL/southern IN through the evening hours. Dewpoints have already begun to increase across the area, and this trend is expected to continue over the next several hours with dewpoints reaching at least into the mid 50s across much of the area by 00z. The combination of increased moisture/instability and deep shear ahead of low pressure will promote an increase in convective development through 21Z. An uptick of convective coverage had already been noted across central Kentucky and this will expand east/northeast over the next few hours. Convection will initially be characterized by discrete cells /supercells/ with all types of severe weather possible. The greatest risk area will reside across southeast IN/southwest OH/northern KY particularly in the 5pm to 9pm time frame. Eventually, a more linear mode may be favored as depicted by several high resolution models. The severe risk will likely continue across the CWA through mid evening, but should wane later in the evening across the eastern portion of the CWA with weaker instability. After midnight, the low is forecast to make it into northwest Ohio and while the severe threat should be over, some showers are expected in association with the low. && .SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/... The low will slowly move across northern Ohio Thursday before lifting into New York state Thursday night. Wrapping around the low, periodic showers are expected during the daytime Thursday. In addition, a tightening pressure gradient will lead to gusty winds. The magnitude of the jet could promote wind gusts near wind advisory criteria but confidence is not quite high enough to issue an advisory yet. HWO will continue to mention. Cold advection will also settle in on Thursday, making for cooler temperatures. And the atmosphere will cool enough where precipitation associated with wrap around moisture will transition from rain to snow. Accumulations around or slightly above an inch may be possible across portions of central Ohio, with lower amounts to the south. && .LONG TERM /FRIDAY THROUGH WEDNESDAY/... Amplified mid and upper level flow pattern with large low over the eastern Great Lakes at the beginning of the long term forecast period. This low will translate east into New England Friday with ongoing snow changing to rain and coming to an end. Any snow Friday morning will be light and only expected to be a tenth or two over ILN/s northeast counties. Breezy conditions especially early on Friday with northwest winds of 15 to 25 kts. Temperatures to be 10 to 15 degrees below normal with highs Friday ranging from the lower 40s northeast to near 50 southwest. Surface high pressure will build across the region on Saturday offering dry weather. Temperatures will moderate close to normal, ranging from the mid 50s northeast to the lower 60s southwest. Large mid/upper level ridge to build over the region with a good southerly low level flow developing on the back side of retreating surface high pressure late in the weekend. This will provide continued dry weather and a warming trend. Highs on Sunday to warm to readings around 10 degrees above normal, ranging from the upper 60s northeast to the lower 70s southwest. Mid level flow to back early next week ahead of trof moving into the upper MS Vly. WAA pattern to continue with an increase in moisture. Model solutions a little slower and will hold off on any mention of showers until Monday night. On the warm side of the system temperatures expect to be 10 to 15 degrees above normal, with highs on Monday ranging from the lower 70s northwest to the mid 70s southeast. Will continue chance of showers and add a mention of thunder during the day Tuesday with marginal instability indicated. Highs Tuesday continue above normal, ranging from the upper 60s northwest to the lower 70s southeast. High pressure to build in Wednesday drying out the region. Temperatures will be closer to normal with highs from the upper 50s northeast to the lower 60s southwest. && .AVIATION /19Z WEDNESDAY THROUGH MONDAY/... Mid clouds cover much of the area at 17Z, with the closest thunderstorms over Indiana, but expect additional thunderstorm development to occur in the 19-21Z time frame as the lower levels moisten up ahead of low pressure. Confidence is reasonably high that thunderstorms will affect all terminals during the late afternoon and evening. In addition to VCTS, have allowed for a 3 hour window for the most likely time of thunderstorm occurrence for each terminal. At this time, only have MVFR vis in the TEMPO groups, but as storms develop and we can better pinpoint the details/impacts at any one terminal, amendments will be issued for possible lower vis and wind gusts. Main convection should be east of the Columbus terminals by 03z, then expect at least MVFR cigs to develop for the overnight along with scattered showers. Some guidance suggests a period of IFR cigs late tonight/early Thursday but didn't have enough confidence to go that low. MVFR cigs may linger well into Thursday, along with the chance for showers. Wind gusts will also increase, perhaps at or above 35 knots particularly around the Cincinnati terminals during the afternoon. OUTLOOK...MVFR ceilings are likely late Thursday into Friday with MVFR visibilities also possible. Wind gusts of 30-40 knots will be possible Thursday afternoon into Thursday evening. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && SYNOPSIS...BPP/AR NEAR TERM...BPP SHORT TERM...BPP LONG TERM...AR AVIATION...BPP
Hazardous Weather Outlook National Weather Service Wilmington OH 355 PM EDT Wed Apr 5 2017 OHZ026-034-035-043>046-052>056-064-065-074-062000- Hardin-Mercer-Auglaize-Shelby-Logan-Union OH-Delaware-Champaign- Clark-Madison-Franklin OH-Licking-Pickaway-Fairfield-Hocking- 355 PM EDT Wed Apr 5 2017 This Hazardous Weather Outlook is for Central Ohio and West Central Ohio. .DAY ONE...This Afternoon and Tonight. Thunderstorms are expected across the area during the late afternoon and evening. A few of the storms may be severe, capable of producing large hail, damaging wind gusts and isolated tornadoes. Heavy rainfall could also produce localized flash flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Wind gusts of 35 to 45 MPH are expected on Thursday afternoon into evening. Snow is expected Thursday night into Friday morning, with accumulations around one inch. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed later this afternoon and evening. INZ050-058-059-066-073>075-080-KYZ089>100-OHZ042-051-060>063-070>073- 077>082-088-062000- Wayne-Fayette IN-Union IN-Franklin IN-Ripley-Dearborn-Ohio- Switzerland-Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant- Pendleton-Bracken-Robertson-Mason-Lewis-Darke-Miami-Preble- Montgomery-Greene-Fayette OH-Butler-Warren-Clinton-Ross-Hamilton- Clermont-Brown-Highland-Adams-Pike-Scioto- 355 PM EDT Wed Apr 5 2017 This Hazardous Weather Outlook is for East Central Indiana, Southeast Indiana, Northeast Kentucky, Northern Kentucky, Central Ohio, Southwest Ohio and West Central Ohio. .DAY ONE...This Afternoon and Tonight. Thunderstorms are expected across the area during the late afternoon and evening. Some of the storms will likely be severe, capable of producing large hail, damaging wind gusts and tornadoes. Heavy rainfall could also produce localized flash flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Wind gusts of 35 to 45 MPH are expected on Thursday afternoon into evening. Snow is expected late Thursday night into Friday morning, with accumulations of generally under an inch. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed later this afternoon and evening.
Special Weather Statement
National Weather Service Wilmington OH
449 PM EDT WED APR 5 2017
OHZ061-052115-
Montgomery OH-
449 PM EDT WED APR 5 2017
...A STRONG THUNDERSTORM WILL AFFECT MONTGOMERY COUNTY UNTIL 515 PM
EDT...
At 448 PM EDT, radar indicated a strong thunderstorm near Miamisburg,
moving northeast at 45 mph.
STORM HAZARDS INCLUDE...
Winds to 40 mph...
Penny size hail...
Locations impacted include...
Dayton, Kettering, Huber Heights, Trotwood, Miamisburg, Vandalia,
Englewood, Moraine, Oakwood, West Carrollton, Riverside, Clayton,
Union, Brookville, Germantown, New Lebanon, Farmersville, Shiloh,
Fort Mckinley and Northview.
This includes the following Interstates...
I-70 in Ohio between mile markers 23 and 37.
I-75 in Ohio between mile markers 45 and 64.
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 3991 8438 3991 8417 3989 8416 3988 8415
3988 8413 3979 8411 3964 8421 3959 8447
3972 8448
TIME...MOT...LOC 2048Z 223DEG 40KT 3967 8439
HatzosSpecial Weather Statement
National Weather Service Wilmington OH
457 PM EDT WED APR 5 2017
INZ058-066-052130-
Fayette IN-Franklin IN-
457 PM EDT WED APR 5 2017
...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN FRANKLIN AND
FAYETTE COUNTIES UNTIL 530 PM EDT...
At 457 PM EDT, radar indicated a strong thunderstorm near Lake
Santee, moving northeast at 40 mph.
STORM HAZARDS INCLUDE...
Winds to 40 mph...
Penny size hail...
Locations impacted include...
Connersville, Glenwood, Lake Santee, Blooming Grove, Columbia,
Metamora, Bunker Hill, Laurel, Alquina, Andersonville, Hamburg,
Alpine, Nulltown, Peppertown, Everton, Buena Vista, Springersville
and Falmouth.
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 3975 8530 3975 8527 3966 8504 3953 8504
3940 8515 3934 8530
TIME...MOT...LOC 2057Z 219DEG 33KT 3946 8535
HatzosSpecial Weather Statement National Weather Service Wilmington OH 505 PM EDT WED APR 5 2017 INZ058-059-066-052130- Fayette IN-Union IN-Franklin IN- 505 PM EDT WED APR 5 2017 ...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN FRANKLIN COUNTY IN SOUTHEASTERN INDIANA...UNION AND SOUTHEASTERN FAYETTE COUNTIES IN EAST CENTRAL INDIANA UNTIL 530 PM EDT... At 505 PM EDT, radar indicated a strong thunderstorm 7 miles north of Brookville, moving north at 30 mph. STORM HAZARDS INCLUDE... Winds to 40 mph... One half inch diameter hail... Locations impacted include... Connersville, Liberty, Salem, Waterloo, Blooming Grove, Brownsville, Dunlapsville, Whitewater State Park, Alquina, Mounds State Recreation Area, Billingsville, Mettel Field, Clifton, Everton and Springersville. 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 8490 3945 8509 3971 8516 3972 8487 TIME...MOT...LOC 2105Z 182DEG 27KT 3953 8500 Hatzos
Special Weather Statement
National Weather Service Wilmington OH
508 PM EDT WED APR 5 2017
OHZ051-061-052145-
Montgomery OH-Miami OH-
508 PM EDT WED APR 5 2017
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN MONTGOMERY AND SOUTHERN
MIAMI COUNTIES UNTIL 545 PM EDT...
At 507 PM EDT, radar indicated a strong thunderstorm over Trotwood,
moving northeast at 35 mph.
STORM HAZARDS INCLUDE...
Winds to 40 mph...
Penny size hail...
Locations impacted include...
Dayton, Huber Heights, Troy, Trotwood, Vandalia, Englewood, Tipp
City, West Milton, Brown, Riverside, Clayton, Union, New Lebanon,
Shiloh, Ginghamsburg, Fort Mckinley, Phoneton, Haven View, Northview
and Drexel.
This includes the following Interstates...
I-70 in Ohio between mile markers 25 and 40.
I-75 in Ohio between mile markers 52 and 72.
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 4001 8404 3998 8404 3984 8408 3983 8409
3978 8410 3973 8421 3972 8441 4002 8432
TIME...MOT...LOC 2107Z 212DEG 30KT 3978 8431
HatzosSpecial Weather Statement
National Weather Service Wilmington OH
536 PM EDT WED APR 5 2017
OHZ051-052-052215-
Champaign OH-Miami OH-
536 PM EDT WED APR 5 2017
...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL CHAMPAIGN AND
EASTERN MIAMI COUNTIES UNTIL 615 PM EDT...
At 536 PM EDT, radar indicated a strong thunderstorm over Tipp City,
moving northeast at 35 mph.
STORM HAZARDS INCLUDE...
Winds to 40 mph...
Penny size hail...
Locations impacted include...
Troy, Tipp City, St. Paris, Christiansburg, Fletcher, Casstown, Haven
View and Grayson.
This includes I-75 in Ohio between mile markers 68 and 77.
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 4017 8393 4004 8403 4004 8404 4002 8404
3995 8409 3996 8431 4019 8417
TIME...MOT...LOC 2136Z 204DEG 32KT 3997 8418
HatzosThe Cincinnati radar (KILN), 80 km away, was scanning. The volume nearest the first event began at 21:41 UTC.
33 thunderstorm wind, 6 hail, 2 tornado. Local standard time, as filed.
Numerous trees were knocked down in Oxford Township.
One tree was knocked down.
A tin roof of a barn was pulled back.
Several large limbs were knocked down. Also pieces of a barn's tin roof were blown off.
Dime size hail was reported as well.
Twenty to twenty five trees were broken off high above the ground in the Sugarcreek MetroPark, just to the northeast of the Conference Road and Wilmington-Dayton Road intersection.
An entire tree was uprooted in a yard on Dayton-Springfield Rd.
The first evidence of damage occurred to a home and farm |buildings along Dayton-Springfield Road southwest of Enon.
While there were numerous homes in the area which sustained tree |damage and lightweight debris damage, the vast majority of this |damage was from straight line winds estimated at 70 mph. The wind |damage was southwest to northeast with no evidence of tornadic |winds making direct contact with the ground nor debris found on |downwind sides of buildings.
There was embedded damage to a farm home and barns where large|sections of roofing material were peeled off and lofted, causing|damage to the downwind home. There was additional roof damage to|the home and 2 additional farm buildings. The southward facing|garage door to the home was blown inward. Two combines located in|one of the outbuildings were pushed downwind, with the outbuilding|itself collapsed.
Where there was evidence of tornado damage was in the |downwind/northeast facing wall of the home and one of the barns, |where debris splatter was observed. Because of heavy rain after |the passage of the storm, direct ground damage indicative of a |tornado in contact with the ground was inconclusive.
Several large tree limbs were knocked down near Enon Road.
Widespread wind damage was observed west of Springfield in the|Tecumseh Trails Subdivision and along North Tecumseh Road north|of New Carlisle Pike. Several homes in the Tecumseh Trails|subdivision sustained roof damage indicative of 75 to 80 mph |winds. However, all of the debris was scattered in a northerly to |northeasterly direction, with no ground based evidence of a |tornado apparent. There was no evidence of light mud nor debris |splatter in the downwind facing side of the homes. However, the |wind damage was significant, resulting in a large section of roof |removed from one home, with other homes in the area sustaining |smaller sections of roof damage. There was additional tree damage|along New Carlisle Pike, including damage to a fence caused by |damaged trees.
Where tornado damage was evident was further east along North |Tecumseh Road. Roof and siding damage was sustained by several |homes. One home had clear debris splatter on the north facing side|of the home, as well as splatter and damage on an eastward facing|porch. This strongly suggests winds traveling in an opposite |direction of the north to northeastward moving storm and provides |evidence of tornadic damage.
The storm traveling through this area of Clark County had|significant winds producing widespread tree and roof damage.|Nearly all of the damage surveyed was pretty clearly in a|northerly to northeasterly direction, indicating strong straight|line wind damage. Damage caused by the brief tornado touchdown |along North Tecumseh Road was similar in magnitude to the |strongest straight line wind damage nearby.
Through witness accounts, it is estimated that the tornado was on|the ground a very brief time, likely less than 1 minute.
Numerous trees were knocked down throughout the county, especially in the Williamsburg area.
There was scattered home damage throughout the neighborhood, including a shed flipped over and lawn furniture thrown around.
The public reported damage to a barn on Johnson Road.
Several branches were reported knocked down.
The hail was covering the ground.
Numerous instances of tree damage were reported in the northern part of the county. Also, a roof of a trailer was blown off near East Main Street.
One large limb, six inches in diameter, was knocked down.
Damage to a home, along with tree damage, was reported along Bingamon Road.
A trailer home on Beltz Road was completely destroyed by high winds.
A tree fell onto a roof of a home on Holiday Drive. Other trees were reported down in the vicinity.
A tree was knocked down on Greenbush Road.
A tree was reported down on Beltz Road.
A propane tank was upended and a large limb was blown onto a house on Beltz Road.
At a farm property on New Market Road, a collection of grain bins was heavily damaged, with one bin pulled down completely.
A garage was destroyed with metal blown straight out into a field on Hereford Rd. A large tree was split by the garage.
Numerous shingles were peeled from the roof of a house.
A tree was knocked down along Green Road.
A tree was knocked down near Berrysville Road.
A branch was knocked down along Lower Twin Road.
Numerous trees were reported knocked down.
A piece of aluminum siding was pulled from a house facade and a boat on a trailer was pushed across the yard damaging a couple of cars.
Several trees were knocked down in the western part of the county, including on Davis Rd., Greenridge Rd. and along State Route 220.
Several trees were knocked down in Saltcreek Township.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2017Every state in 2017This day in weather historyThe tornado archive for Ohio, 2017Warnings in Ohio, April 2017
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: 679150, 679142, 679151, 679152, 679264, 679296, 679267, 679285, 679143, 679144, 679145, 679286, 679287, 679268, 679148, 679146, 679270, 679149, 679271, 679272, 679273, 679274, 679147, 679275, 679276, 679277, 679278, 679279, 679280, 679281, 679315, 679282, 679283, 679295, 679289, 679288, 679290, 679293, 679294, 679292, and more.