A north-south oriented line of shower and thunderstorms pushed east during the late morning and early afternoon of June 26th. Some flooding was noted in Marion County and a couple reports of wind damage was received from southern portions of central Indiana.
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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 north-south oriented line of shower and thunderstorms pushed east during the late morning and early afternoon of June 26th. Some flooding was noted in Marion County and a couple reports of wind damage was received from southern portions of central Indiana.
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 26, 5:28 AM EST, 4 hours 26 minutes earlier.
Area Forecast Discussion National Weather Service Indianapolis IN 628 AM EDT Tue Jun 26 2018 .UPDATE... The NEAR TERM Section has been updated below. && .SYNOPSIS... Issued at 236 AM EDT Tue Jun 26 2018 An upper level circulation over the Central Plains will lift northeast and open up over the Great Lakes tonight and Wednesday. Multiple bands of showers and thunderstorms will progress eastward with this system today into Wednesday. Upper ridging will build in Thursday behind the exiting system to start another very hot and humid spell. The ridge will peak across our area Friday and shift eastward for the weekend. With adequate low level moisture from rains the next 36 hours, peak heating hours late week will yield pretty unstable air that may trigger isolated evening convection Friday into Sunday if warm temperatures aloft don't cap us. A flattening of the flow late weekend in advance of the next trough moving into the Northern Plains Sunday will renew or more organized convective period Sunday night into early next week. Model blend temperatures appear reasonable. Other than near normal temperatures today due to clouds and rain, an extended period of well above normal temperatures will ensue beginning Wednesday and peaking Friday and Saturday. && .NEAR TERM /Today/... Issued at 625 AM EDT Tue Jun 26 2018 Have raised pops from 50 to 60% most areas given storm and shower growth in Illinois last few hours. Bulk of rain appears headed for northwest half of forecast area but given all the trailing convection back to southern Missouri, most areas should see a period of rain and storms this morning into midday or so. Still expecting some sunshine after this so temperature rises into the lower 80s still seems reasonable. && .SHORT TERM /Tonight through Thursday night/... Issued at 236 AM EDT Tue Jun 26 2018 The upper and surface low will progress across the Great Lakes tonight and Wednesday producing several periods of scattered showers and thunderstorms, again some with heavy rainfall. The trough axis shifts east of us by midday Wednesday ending the threat for rain with skies becoming partly cloudy. Ridge building takes over Wednesday night into Thursday. Some convection may develop west of Indiana in this time frame associated with a weak upper wave interacting with the warm front but any impact from this would touch our southwest most areas at best. Max and min temperatures will steadily rise upward each day. With recent rains and maturing corn crops, 70+ degree dewpoints should bring heat indices back to the mid 90s by Thursday. && .LONG TERM /Friday through Monday/... Issued at 252 AM EDT Tue Jun 26 2018 Ensembles in good agreement on the upcoming weather pattern. A heat ridge is expected to build across the area temporarily early in the extended, before getting flattened out by early next week as a series of short wave troughs move across the northern Plains and western Great Lakes. Despite very high instability progged by the end of the week, it appears air mass will be capped off, especially on Friday. The cap will probably get progressively weaker with time as upper heights slowly fall. Therefore, the chances for air mass type convection may gradually increase over the weekend. Will tend to keep Friday dry under the strong cap, and go with some small chance PoPs for Saturday and Sunday as the cap weakens. By next Monday, ensembles suggest a front will drop down into the area from the northwest. At this time, it appears the best threat for convection during this period will be with this front. && .AVIATION /Discussion for 261200z TAFs/... Issued at 603 AM EDT Tue Jun 26 2018 Narrow band of showers east of TAF sites at outset. Clusters of thunderstorms in eastern IL arriving at TAF sites in first few hours of forecast period. Prior to storm arrival, cloud decks are below 1000 feet. Once storms arrive, cloud decks raise to MVFR, and once storms exit ceilings will raise to VFR. Visibility could drop to 2 miles in core of storms but confidence to low to include in forecast. More storm clusters will occur this afternoon and tonight ahead of surface trough expected to be reaching TAF sites near 271200z. && .IND WATCHES/WARNINGS/ADVISORIES... NONE. && SYNOPSIS...Tucek NEAR TERM...Tucek SHORT TERM...Tucek LONG TERM....JAS AVIATION...Tucek
Hazardous Weather Outlook National Weather Service Indianapolis IN 435 AM EDT Tue Jun 26 2018 INZ021-028>031-035>049-051>057-060>065-067>072-271000- 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 435 AM EDT Tue Jun 26 2018 This hazardous weather outlook is for central Indiana. .DAY ONE...Today and Tonight. Outlook: Thunderstorm activity is expected across the area today and tonight. Isolated severe storms are possible this afternoon and through the evening hours. Heavy rainfall is also possible this afternoon and tonight. Hazards: Frequent cloud to ground lightning, strong damaging winds, small hail, and heavy rainfall which may lead to localized flooding. Timing: Best threat for severe storms from the midday hours through about midnight tonight. Discussion: A frontal system off to the west will begin moving into the area later today and tonight. Shower and thunderstorm activity is expected through tonight as this frontal system approaches. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Outlook: Thunderstorm activity is possible on Wednesday, as well as over the weekend and into early next week. Isolated strong to severe storms are possible Wednesday, especially east of a Muncie to Bedford line. Heat index values may approach or exceed 100 degrees on Friday, Saturday, and Sunday afternoon. Discussion: A frontal system will be in the process of moving through the area on Wednesday. This front may be accompanied by thunderstorm activity, with the potential for isolated strong to severe storms, especially over eastern Indiana. Additional thunderstorm activity is possible by the weekend and on into early next week as another front approaches the area from the northwest. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated today or tonight at this time. Severe storm spotters are encouraged to monitor future weather statements regarding any changes to the severe weather outlook later today and Wednesday. && 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
845 AM EDT TUE JUN 26 2018
INZ043-044-051-052-060-261330-
Clay IN-Parke IN-Vermillion IN-Vigo IN-Sullivan IN-
845 AM EDT TUE JUN 26 2018
...SIGNIFICANT WEATHER ADVISORY FOR VIGO...NORTHERN SULLIVAN...
WESTERN CLAY...WESTERN PARKE AND SOUTHERN VERMILLION COUNTIES UNTIL
930 AM EDT...
At 844 AM EDT, Doppler radar was tracking a strong thunderstorm near
Dennison, or near Terre Haute, moving northeast at 35 mph.
Half inch hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Terre Haute, Clinton, Rockville, West Terre Haute, Fairview Park,
Shelburn, Prairieton, Prairie Creek, Farmersburg, Seelyville,
Montezuma, Hymera, Fairbanks, Rosedale, Staunton, Universal, Mecca,
Bloomingdale, Marshall and Riley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3917 8764 3917 8762 3918 8762 3920 8759
3922 8757 3925 8757 3925 8760 3928 8761
3930 8760 3931 8762 3934 8758 3934 8756
3935 8753 3970 8753 3991 8718 3922 8714
3911 8765 3912 8764 3914 8766
TIME...MOT...LOC 1244Z 239DEG 29KT 3949 8750
MKSpecial Weather Statement
National Weather Service Indianapolis IN
927 AM EDT TUE JUN 26 2018
INZ036-037-044>046-052-261415-
Clay IN-Montgomery IN-Putnam IN-Hendricks IN-Boone IN-Parke IN-
927 AM EDT TUE JUN 26 2018
...SIGNIFICANT WEATHER ADVISORY FOR HENDRICKS...NORTH CENTRAL CLAY...
SOUTHEASTERN PARKE...SOUTHWESTERN BOONE...SOUTHEASTERN MONTGOMERY AND
PUTNAM COUNTIES UNTIL 1015 AM EDT...
At 927 AM EDT, Doppler radar was tracking a strong thunderstorm 9
miles west of Greencastle, or 25 miles south of Crawfordsville,
moving northeast at 40 mph.
Half inch hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Plainfield, Lebanon, Greencastle, Danville, Brazil, Avon, Pittsboro,
Ladoga, Clayton, Jamestown, Roachdale, Knightsville, Bainbridge,
Harmony, Fillmore, Coatesville, North Salem, Lizton, Advance and Amo.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4007 8650 3963 8637 3963 8646 3960 8646
3960 8665 3957 8666 3949 8712 3966 8706
3977 8716
TIME...MOT...LOC 1327Z 242DEG 33KT 3969 8700
MKSpecial Weather Statement
National Weather Service Indianapolis IN
1001 AM EDT TUE JUN 26 2018
INZ037-046-261445-
Hendricks IN-Boone IN-
1001 AM EDT TUE JUN 26 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN HENDRICKS AND SOUTHERN
BOONE COUNTIES UNTIL 1045 AM EDT...
At 1000 AM EDT, Doppler radar was tracking a strong thunderstorm 10
miles southwest of Lebanon, or 18 miles southeast of Crawfordsville,
moving east at 40 mph.
Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.
Locations impacted include...
Brownsburg, Lebanon, Pittsboro, Whitestown, Jamestown, North Salem,
Lizton, Advance and Ulen.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4011 8638 3992 8629 3992 8633 3987 8633
3986 8669 3988 8670 3997 8669
TIME...MOT...LOC 1400Z 252DEG 36KT 3993 8658
MKSpecial Weather Statement
National Weather Service Indianapolis IN
1031 AM EDT TUE JUN 26 2018
INZ039-047-048-261515-
Hancock IN-Hamilton IN-Marion IN-
1031 AM EDT TUE JUN 26 2018
...SPECIAL WEATHER STATEMENT...
At 1031 AM EDT, Doppler radar was tracking a strong thunderstorm over
Speedway, or near Indianapolis, moving east at 30 mph.
Half inch hail and winds in excess of 30 mph will be possible with
this storm.
Locations impacted include...
Indianapolis, Carmel, Fishers, Noblesville, Lawrence, Beech Grove,
Speedway, Westfield, Cumberland, McCordsville, Meridian Hills, Warren
Park, Clermont, Rocky Ripple, Williams Creek, Wynnedale, Spring Lake,
Spring Hill, Crows Nest and North Crows Nest.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4006 8596 3976 8584 3971 8629 3987 8633
3992 8633 3993 8624 3996 8624
TIME...MOT...LOC 1431Z 251DEG 23KT 3982 8624
MKThe Indianapolis radar (KIND), 13 km away, was scanning. The volume nearest the first event began at 14:50 UTC.
2 thunderstorm wind, 1 flood. Local standard time, as filed.
Several inches of water was reported to be on Interstate 65 in downtown Indianapolis due to heavy rainfall.
Numerous trees were reported down due to damaging thunderstorm wind gusts.
There were two locations over west-central parts of Lawrence County with trees down due to damaging thunderstorm wind gusts.
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: 762798, 762799, 762800.