A series of lines of showers and thunderstorms developed across central Illinois and moved southeast into central Indiana during much of the day into the evening on June 10th. The first line produced some damaging wind and small hail in the northeast.
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 IND wrote it up.
A series of lines of showers and thunderstorms developed across central Illinois and moved southeast into central Indiana during much of the day into the evening on June 10th. The first line produced some damaging wind and small hail in the northeast. The next batch provided mainly thunderstorm wind gusts across west-central and central Indiana. After that, large hail was reported in Knox County during the late afternoon, with flash flooding reported during the evening hours.
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 Indianapolis, IN wrote its last area forecast discussion before the first event at Jun 10, 3:18 AM EST, 2 hours 18 minutes earlier.
Area Forecast Discussion National Weather Service Indianapolis IN 418 AM EDT Sun Jun 10 2018 .UPDATE... The AVIATION Section has been updated below. && .SYNOPSIS... Issued at 345 AM EDT Sun Jun 10 2018 The early portions of the week will be characterized by northwest flow and ridge riding thunderstorm complexes. A weak surface boundary will meander across central Indiana through Tuesday before a more vigorous cold front passes through the state. There will be chances for thunderstorms during the afternoon and evening each day as convective temperatures are met. In the aftermath of the cold front, more seasonable temperatures in the mid to upper 80s is expected through the weekend and the occasional afternoon thunderstorm. && .NEAR TERM /Today/... Issued at 345 AM EDT Sun Jun 10 2018 The primary focus for today will be focused on the ongoing thunderstorm complex in eastern Iowa and northern Illinois and how it progresses into Indiana. Model guidance has been extremely inconsistent at best, so confidence is relatively low for expected temperatures and precipitation today. Expectations are for the ongoing convection to move into central Indiana during the mid morning hours as it rides along an instability gradient and along the weak surface boundary. Convective debris and early morning precipitation will likely lead to temperatures significantly cooler than was previously expected, so undercut temperatures from initialized model blend. Going later into the day some recovery is expected with skies clearing out by mid afternoon. Thoughts are that there will be another round of thunderstorms firing in northern Illinois and moving into central Indiana by the late evening into early over night hours. With lower confidence on the second round, kept POPs relatively low and broad brushed. Highs for the afternoon are expected to be in the mid to upper 80s in the southwest and the low to mid 80s across the northern counties. Winds will generally be out of the southwest at around 8 to 10 mph. && .SHORT TERM /Tonight through Tuesday night/... Issued at 345 AM EDT Sun Jun 10 2018 Much of what happens on Sunday night and Monday will be dependent on where outflow boundaries from storms on Sunday settle. Thus, another low confidence forecast. Ridge riding thunderstorm complexes will be the main threat for precipitation. Expectations are that at the start of the period there will be a complex of storms moving across central Indiana with better chances in the northern areas. There may be a few lingering thunderstorms going into the day Monday with additional thunderstorm development possible in the afternoon when convective temperatures are met. Another round of thunderstorms is expected Monday afternoon through the early overnight hours as another weak wave rides along the ridge and moves into central Indiana. Again, best chances for rain and thunderstorms will be across the northern counties as a thunderstorm complex. Confidence begins to increase going into Tuesday as a stronger upper level wave is expected to move into the area bringing a cold front that will clear out lingering weak boundaries from earlier convection. Westerly flow and drier conditions are expected starting out the day Wednesday. Overall, much of the area should see a good soaking rain at least once between Sunday and Wednesday with better chances for higher amounts across the northern counties. Highs will generally be in the mid to upper 80s and lows in the mid to upper 60s on Monday and Tuesday. Convective debris across the area could lead to lower high temperatures, especially across the northern counties. && .LONG TERM (Wednesday through Saturday)... Issued at 223 AM EDT Sun Jun 10 2018 Forecast confidence is high through Wednesday night, then moderate. There is strong model agreement Wednesday and Wednesday night will be mostly dry. Model temperature forecasts are also close for that time. Consensus should be accurate to within 3 degrees. Beginning Thursday the European and American models are close on the large scale, but differ on details. This suggests overall trends should work out, but for any given day forecast confidence is only moderate. Potential errors from the consensus forecast are 5 degrees for temperatures and 10-20 percent for POPs. && .AVIATION (Discussion for 100900Z TAF update).. Issued at 419 AM EDT Sun Jun 10 2018 Some changes were made in accordance with latest observations. For the most part the forecast remains on track. Previous discussion follows. A period of MVFR with possibly brief IFR overnight. Otherwise VFR outside of convection. Satellite and observations show MVFR clouds and fog developing across southern central Indiana. These are expected to spread northeast overnight, before improving after sunrise. Remnants of convection across Iowa could impact the sites around 12- 15Z, with additional convection developing during the afternoon and evening. Confidence is very low with timing, so used VCTS and PROB30s to cover chances. && .IND WATCHES/WARNINGS/ADVISORIES... NONE. && SYNOPSIS...White NEAR TERM...White SHORT TERM...White LONG TERM....JK AVIATION...50/JK
Hazardous Weather Outlook National Weather Service Indianapolis IN 548 AM EDT Sun Jun 10 2018 INZ021-028>031-035>049-051>057-060>065-067>072-111000- Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-Boone- Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-Putnam- Hendricks-Marion-Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby- Rush-Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess- Martin-Lawrence-Jackson-Jennings- Including the cities of Lafayette, Frankfort, Kokomo, Crawfordsville, Anderson, Muncie, Indianapolis, Terre Haute, Shelbyville, Bloomington, Columbus, Vincennes, Bedford, and Seymour 548 AM EDT Sun Jun 10 2018 This hazardous weather outlook is for central Indiana. .DAY ONE...Today and Tonight. Outlook: Thunderstorms likely. Isolated storms could be severe. Hazards: Lightning. Brief heavy rain. Damaging winds or large hail. Timing: Possible anytime, but mainly 2 PM to 10 PM. Discussion: Storms will be triggered by a front stalled over Indiana. Storms will be most numerous and strongest during the afternoon and evening when the air will be hot and unstable .DAYS TWO THROUGH SEVEN...Monday through Saturday. Outlook: There will a chance for storms daily except on Wednesday. It is too early to say if there will be severe weather. Discussion: A front lingering over Indiana will cause storms the first part of this week. There should be a brief dry spell under high pressure Wednesday, then another front could bring more storms. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon or evening. && More information, along with other weather, hydrological and climate information can be found at http://weather.gov/ind
Special Weather Statement
National Weather Service Indianapolis IN
552 AM EDT SUN JUN 10 2018
INZ028-029-035-036-101030-
Montgomery IN-Fountain IN-Warren IN-Tippecanoe IN-
552 AM EDT SUN JUN 10 2018
...SIGNIFICANT WEATHER ADVISORY FOR FOUNTAIN...SOUTHWESTERN
TIPPECANOE...WARREN AND NORTHWESTERN MONTGOMERY COUNTIES UNTIL 630 AM
EDT...
At 552 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Atkinson to near Danville. Movement was
southeast at 40 mph.
Half inch hail and wind gusts of 50 to 55 mph will be possible with
these storms.
Locations impacted include...
Covington, Veedersburg, Williamsport, Attica, Shadeland, Waynetown,
Linden, West Lebanon, Hillsboro, New Richmond, Wingate, Newtown, Pine
Village, Mellott, State Line City, Wallace, Pence, Foster, Tab and
Yeddo.
LAT...LON 4043 8753 4048 8752 4048 8720 4023 8678
3995 8714 3995 8718 4008 8741 4013 8741
4013 8749 4015 8749 4015 8753
TIME...MOT...LOC 0952Z 307DEG 34KT 4060 8715 4020 8757
AW/JKSpecial Weather Statement
National Weather Service Indianapolis IN
618 AM EDT SUN JUN 10 2018
INZ021-029-030-035>037-101100-
Montgomery IN-Clinton IN-Fountain IN-Boone IN-Tippecanoe IN-
Carroll IN-
618 AM EDT SUN JUN 10 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN CARROLL...NORTHEASTERN
FOUNTAIN...TIPPECANOE...CLINTON...WESTERN BOONE AND MONTGOMERY
COUNTIES UNTIL 700 AM EDT...
At 617 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Brookston to 8 miles east of Williamsport.
Movement was east at 45 mph.
Half inch hail and wind gusts of 50 to 55 mph will be possible with
these storms.
Locations impacted include...
Lafayette, Frankfort, Crawfordsville, West Lafayette, Rossville,
Shadeland, Thorntown, Dayton, Battle Ground, Mulberry, Waynetown,
Darlington, Linden, Colfax, Clarks Hill, Advance, Michigantown, New
Ross, New Richmond and Wingate.
LAT...LON 4044 8638 4043 8638 4042 8631 4039 8631
4039 8628 4037 8628 4037 8624 4036 8624
3992 8668 3992 8669 3990 8670 4019 8729
4056 8690 4056 8677 4057 8677
TIME...MOT...LOC 1017Z 288DEG 39KT 4053 8686 4030 8714
AW/JKSpecial Weather Statement
National Weather Service Indianapolis IN
620 AM EDT SUN JUN 10 2018
INZ035-036-043>045-051-052-101100-
Clay IN-Montgomery IN-Putnam IN-Fountain IN-Parke IN-Vermillion IN-
Vigo IN-
620 AM EDT SUN JUN 10 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN VIGO...SOUTHERN
FOUNTAIN...NORTHWESTERN CLAY...PARKE...VERMILLION...SOUTHERN
MONTGOMERY AND NORTHWESTERN PUTNAM COUNTIES UNTIL 700 AM EDT...
At 619 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Veedersburg to Chrisman. Movement was
southeast at 40 mph.
Half inch hail and wind gusts of 50 to 55 mph will be possible with
these storms.
Locations impacted include...
Terre Haute, Clinton, Rockville, Veedersburg, Newport, Fairview Park,
Cayuga, Seelyville, Montezuma, Ladoga, Waynetown, Roachdale,
Rosedale, New Market, Dana, Hillsboro, Kingman, Waveland, Carbon and
Universal.
LAT...LON 3994 8753 4018 8724 3990 8669 3940 8731
3954 8753
TIME...MOT...LOC 1019Z 311DEG 34KT 4017 8723 3982 8765
AW/JKThe Indianapolis radar (KIND), 81 km away, was scanning. The volume nearest the first event began at 10:34 UTC.
14 thunderstorm wind, 3 hail, 1 flash flood. Local standard time, as filed.
Several large limbs of unknown size had broken off of a healthy tree due to damaging thunderstorm wind gusts. This report was relayed via social media.
Dime to nickel sized hail was observed in this location.
A 100-foot tall tree was blown down across Lambert Avenue near Highway 41 near the Parke/Vigo County border due to damaging thunderstorm wind gusts.
An estimated 60 mph thunderstorm wind gust was observed in this area.
Scattered tree limbs were downed and a couple trees snapped about halfway up their trunks due to damaging thunderstorm wind gusts. This occurred in the vicinity of County Road 880 West and County Road 750 North. In this same general area, other trees and tree limbs were down as well as damage to some corn crops.
Trees were down across roads around a neighborhood in this location due to damaging thunderstorm wind gusts. The power was out as well.
An estimated 60 mph thunderstorm wind gust was observed in this area.
Scattered trees were downed across the northwest quarter of the county due to damaging thunderstorm wind gusts.
Approximately one mile north of Morton, a large tree and corn stalks were blown down due to damaging thunderstorm wind gusts.
One tree or large branch was blown down in Greencastle due to damaging thunderstorm wind gusts. This report was received via Twitter.
Tree branches and/or trees were downed on Highway 36 due to damaging thunderstorm wind gusts.
A 6-inch diameter tree limb was blown down at County Road 100 West and Highway 40 due to strong thunderstorm wind gusts.
A large tree was downed on State Road 39 in Danville due to damaging thunderstorm wind gusts.
A six to eight-inch diameter section of a moderate-sized tree split off due to damaging thunderstorm wind gusts.
A large tree was downed in Pioneer Park due to damaging thunderstorm wind gusts. The fallen tree required a bulldozer to remove.
This report was relayed via amateur radio.
This report was received via Twitter.
Cattle Barn Road in southern Knox County was flooded due to heavy thunderstorm rainfall.
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: 765728, 764711, 765747, 765749, 765758, 765777, 765768, 764716, 765789, 765792, 764773, 765826, 765829, 765839, 765842, 765866, 764737, 765871.