Weak shortwave in upper level flow, surface trough moving over the area during the early afternoon-evening hours. Bulk effective shear of approximately 25-30 knots.
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 IWX wrote it up.
Weak shortwave in upper level flow, surface trough moving over the area during the early afternoon-evening hours. Bulk effective shear of approximately 25-30 knots. Numerous outflow boundaries help locally intensify some storms with occasional bowing segments.
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 Northern Indiana wrote its last area forecast discussion before the first event at Jun 19, 12:32 PM EST, 5 hours 27 minutes earlier.
Area Forecast Discussion National Weather Service Northern Indiana 132 PM EDT Mon Jun 19 2017 .SYNOPSIS... Issued at 140 AM EDT Mom Jun 18 2017 A strong low pressure system over southeast Ontario will move slowly northeast early this week resulting in cooler and less humid air over our area. A couple of troughs rotating around the Ontario low are expected to cause scattered showers and a few thunderstorms in our area today and Tuesday. High pressure will move across our area Wednesday providing fair weather. The high will move east late this week as a cold front approaches from the northwest, resulting in warmer more humid conditions with a chance of thunderstorms. && .SHORT TERM...(Tonight and Tuesday) Issued at 132 PM EDT Mon Jun 19 2017 Sw trough spreading ewd across cntrl lake MI triggering sct tsra this aftn esp along sfc composite lake breeze confluent zone from nw IN through srn MI. Expect coverage will widen further through mid aftn in response to continued favorable sfc based destabilization as cold pool aloft deepens overhead. Otherwise activity will pull quickly ewd out out of the cwa by evening. Similar situation expected tomorrow as nw flow aloft across the lakes continues before breaking long term. Upstream sw dropping through MB looks fairly robust per water vapor imagery. Fittingly bulk of latest and prior CAMS models point to vigorous convective development by mid aftn Tue along leading edge of mid level trough. Given attendant speed max nr 80kts and focused ascent plume likely to see some loose organization. && .LONG TERM...(Tuesday through Sunday) Issued at 132 PM EDT Mon Jun 19 2017 Tricky period stemming from tropical disturbance developing through the northern Gomex and eventual northward progression into the mid MS/lower OH valley late period. Start of the period features newd progression of mean troughing through se Canada and upstream height rises across the lakes. More summer like weather expected as a result as sw flow deepens across the area swd of next vigorous disturbance amplifying through srn Canada dys 4-5 (Thu/Fri) with active w-e oriented frontal zone aligned through the srn lakes/OH valley. In absence of a more concerted model consensus at this range will generally follow blended guidance in lieu of a more compelling solution. && .AVIATION...(For the 12Z TAFS through 12Z Tuesday Morning) Issued at 132 PM EDT Mon Jun 19 2017 An upper level disturbance combined with cold air aloft this afternoon will sct showers/storms this afternoon. && .IWX WATCHES/WARNINGS/ADVISORIES... IN...NONE. MI...NONE. OH...NONE. LM...NONE. && SYNOPSIS...JT/Skipper SHORT TERM...T LONG TERM...T AVIATION...T Visit us at www.weather.gov/iwx Follow us on Facebook...Twitter...and YouTube at: www.facebook.com/NWSNorthernIndiana www.twitter.com/nwsiwx www.youtube.com/NWSNorthernIndiana
Hazardous Weather Outlook National Weather Service Northern Indiana 434 AM EDT Mon Jun 19 2017 INZ003>009-012>018-020-022>027-032>034-MIZ077>081-OHZ001-002-004-005- 015-016-024-025-200845- La Porte-St. Joseph IN-Elkhart-Lagrange-Steuben-Noble-De Kalb-Starke- Pulaski-Marshall-Fulton IN-Kosciusko-Whitley-Allen IN-White-Cass IN- Miami-Wabash-Huntington-Wells-Adams-Grant-Blackford-Jay-Berrien- Cass MI-St. Joseph MI-Branch-Hillsdale-Williams-Fulton OH-Defiance- Henry-Paulding-Putnam-Van Wert-Allen OH- 434 AM EDT Mon Jun 19 2017 /334 AM CDT Mon Jun 19 2017/ This hazardous weather outlook is for portions of southwest Michigan...northern Indiana and northwest Ohio. .DAY ONE...Today and Tonight There is a chance for thunderstorms today...mainly this afternoon and early evening. An isolated strong storm is possible with small hail and gusty winds. Widespread severe weather is not expected. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday There is a chance for thunderstorms Tuesday...and at times from Wednesday night through Sunday. It is too early to determine the risk for severe weather. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. && Stay tuned to NOAA Weather Radio for further details or updates...or check our web site at weather.gov/iwx LMZ043-046-200845- New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI- 434 AM EDT Mon Jun 19 2017 This hazardous weather outlook is for portions of The Nearshore Waters of Southeastern Lake Michigan. .DAY ONE...Today and Tonight There is a chance for thunderstorms today. An isolated strong storm with small hail and gusty winds is possible. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday There is a chance for thunderstorms Tuesday...and at times from Wednesday night through Sunday. It is too early to determine the risk for severe weather. && Stay tuned to NOAA Weather Radio for further details or updates...or check our web site at weather.gov/iwx
Special Weather Statement National Weather Service Northern Indiana 535 PM EDT MON JUN 19 2017 MIZ077-192200- Berrien- 535 PM EDT MON JUN 19 2017 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN BERRIEN COUNTY... At 535 PM EDT, a strong thunderstorm was located near Buchanan, moving east at 35 mph. Winds in excess of 30 mph and pea size hail are possible with this storm. Locations impacted include... Niles, Buchanan, Bertrand, Dayton and Galien. 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 4176 8623 4176 8658 4187 8657 4190 8622 TIME...MOT...LOC 2135Z 272DEG 29KT 4181 8649 NWS
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
548 PM EDT MON JUN 19 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0547 PM HAIL ROSELAND 41.72N 86.25W
06/19/2017 M0.50 INCH ST. JOSEPH IN TRAINED SPOTTER
HEAVY RAIN.
&&
GHSpecial Weather Statement
National Weather Service Northern Indiana
605 PM EDT MON JUN 19 2017
INZ004>006-014-016-MIZ078-079-192230-
Lagrange-St. Joseph-Kosciusko-Marshall-Elkhart-St. Joseph-Cass-
605 PM EDT MON JUN 19 2017
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT ELKHART...EASTERN ST.
JOSEPH...NORTHWESTERN KOSCIUSKO...WESTERN LAGRANGE...NORTHERN
MARSHALL...SOUTHERN CASS AND SOUTHWESTERN ST. JOSEPH COUNTIES...
At 604 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Niles to near Osceola to near
Plymouth. Movement was east at 35 mph.
Winds in excess of 30 mph and pea size hail are possible with these
storms.
Locations impacted include...
Elkhart, Mishawaka, Goshen, Warsaw, Niles, Plymouth, Nappanee,
Bremen, Syracuse, Granger, Dunlap, Simonton Lake, Middlebury,
Osceola, Constantine, Bourbon, Cassopolis, Wakarusa, Bristol and
Milford.
This includes Interstate 80 in Indiana between mile markers 81 and
110.
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 4161 8552 4152 8560 4152 8566 4147 8565
4126 8584 4134 8639 4163 8613 4178 8623
4190 8622 4194 8574
TIME...MOT...LOC 2204Z 272DEG 30KT 4183 8621 4163 8608 4140 8629
NWSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
637 PM EDT MON JUN 19 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0330 PM TSTM WND DMG 2 SSE TEDROW 41.57N 84.20W
06/19/2017 FULTON OH EMERGENCY MNGR
DELAYED REPORT. POWER LINES DOWN ACROSS THE
ROAD.
&&
GHPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
646 PM EDT MON JUN 19 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0330 PM TSTM WND DMG 2 ESE STANDLEY 41.25N 84.19W
06/19/2017 HENRY OH EMERGENCY MNGR
CORRECTED LOCATION: DELAYED REPORT: POWER
LINES DOWN ACROSS ROAD.
&&
GHSpecial Weather Statement
National Weather Service Northern Indiana
650 PM EDT MON JUN 19 2017
INZ006>009-MIZ079-080-192315-
Lagrange-Noble-De Kalb-Steuben-Branch-St. Joseph-
650 PM EDT MON JUN 19 2017
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT STEUBEN...NOBLE...DE
KALB...LAGRANGE...CENTRAL ST. JOSEPH AND SOUTHERN BRANCH COUNTIES...
At 649 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Three Rivers to near Sturgis to near
North Webster. Movement was east at 45 mph.
Winds in excess of 30 mph and pea size hail are possible with these
storms.
Locations impacted include...
Auburn, Sturgis, Coldwater, Kendallville, Angola, Three Rivers,
Garrett, Ligonier, Lagrange, Avilla, Albion, Bronson, Waterloo,
Fremont, Hamilton, Centreville, Rome City, Colon, Topeka and Ray.
This includes the following highways...
Interstate 69 in Indiana between mile markers 323 and 357.
Interstate 69 in Michigan between mile markers 1 and 12.
Interstate 80 in Indiana between mile markers 116 and 155.
Torrential rainfall is also occurring with these storms, and may
cause 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 4176 8483 4167 8481 4127 8496 4128 8545
4130 8554 4129 8564 4131 8565 4172 8549
4198 8575 4198 8501
TIME...MOT...LOC 2249Z 269DEG 40KT 4193 8563 4173 8542 4131 8559
NWSThe Northern Indiana radar (KIWX), 64 km away, was scanning. The volume nearest the first event began at 22:59 UTC.
1 thunderstorm wind. Local standard time, as filed.
Amateur radio operators reported a tree fell onto a car as well as power lines.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2017Every state in 2017This day in weather historyWarnings in Michigan, June 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: 707520.