A squall line raced through northern Indiana and spawned numerous tornadoes. In southern Michigan, damaging wind gusts occurred downing trees, some onto houses.
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.
A squall line raced through northern Indiana and spawned numerous tornadoes. In southern Michigan, damaging wind gusts occurred downing trees, some onto houses. Powerlines were reported to be down in multiple areas as well.
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 11, 7:34 PM EST, 2 hours 8 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Northern Indiana 834 PM EDT Thu Jun 11 2026 .KEY MESSAGES... - Chances for severe weather exist again tonight. Damaging wind, hail, heavy rain, and a few tornadoes are possible with this severe weather threat. - Next chances for showers and storms return Saturday night with another cool frontal passage, bringing cooler temperatures into low/mid 70s to lower 80s along with decreased humidity across the area Sunday and Monday. - A moderate swim risk exists along the southeast Lake Michigan shoreline today and Friday as waves reach 2 to 4 feet. Breaking waves and currents are expected. Stay away from dangerous areas like piers, breakwalls, and river outlets. Always have a flotation device with you in the water. && .UPDATE... Issued at 833 PM EDT Thu Jun 11 2026 Tornado Watch 318 has been issued through 06z for most of the area. A very unstable air mass continues to advect back northeast over the area early this evening within a ramping low level jet. Favorable low level hodo curvature enhanced by a leftover boundary from earlier convection into areas west of Interstate 69, and 40-50 kts of bulk shear in the 0-3 km layer continue to make tornadoes a concern. Higher probabilities remain for sig wind damage within any bowing segments. Storm mode as of this writing is still a little messy just upstream with attempts at a few supercells in the pre-frontal environment now getting into far nw IN. These would carry a tornado/hail/wind threat with an eventual merger into a QLCS east through the area through the early overnight. Latest HRRR and WoFS runs continue to suggest a weakening trend (becoming more outflow dominant) as this activity gets into northwest OH, though wind would still be a concern even if this occurs. A local extension of the TOR Watch or a new Svr Watch may be needed in our far eastern counties that were not included in this watch. && .DISCUSSION... Issued at 349 PM EDT Thu Jun 11 2026 Severe weather is still looking likely tonight. The main line of storms will be associated with a cold front currently located over central WI/IA and northwest MO and orientated in a northeast to southwest manner. This front will push continue to push eastward this evening and the timing still is looking good for this front to approach our western edge of the CWA around 9 PM EDT. Now there is a concern that some scattered storms may pop-up ahead of this front that could impact our area earlier due to an old linear MCS associated with an old outflow boundary that has transited eastward across eastern IA/MO and through central IL earlier today. Current radar shows that some of that activity has made it to the eastern IL/western IN border. With the very unstable airmass still present it would not take much to get storms to develop from any outflows that push out from these storms. All of the ingredients for severe weather will be present this evening with temperatures in the mid to upper 80s and dew points in the upper 60s to low 70s in place across the CWA and this will provide decent surface instability with about 2500-3500 J/kg of SB CAPE. The frontal boundary will also provide a good lifting focal point (or even a stronger outflow boundaries that may be present ahead of the front). Effective bulk shear values of 35 to 55 kts are available with the higher values located across our northwestern portions of the CWA. 300-400 m2/s2 of SR Helicity is also available ahead of the cold front which will increase the tornado threat especially earlier in the evening. SPC currently has a majority of our area under an enhanced severe storm risk this evening. The aforementioned storms that are just to the west of our area could affect the environment and mitigate some of the potential available for when the front does arrive. So will need to see how that pans out and could be a fly in the ointment. There also is the expectation that storms will weaken the further east they move through the night so the better chances for severe storms will be further west but cannot rule out a few storms remaining strong well into the overnight period if the storms can manage to remain balanced and not be overwhelmed by a descending cold pool. The storms should be through the area by 3 to 4 AM EDT and again all threats are on the table but the most likely threat will be winds and a few tornadoes. Heavy rainfall will accompany these storms but there will be good forward movement to help keep the flooding risk at bay. In the wake of the cold front we will have a cooler and drier airmass move into the area and should provide a very nice couple of mostly sunny spring days on Friday and Saturday with temperatures in the mid 70s to mid 80s. The important part is the humidity will be decreased with dew points dropping back into the 50s. The next chance of showers and storms will arrive late Saturday and into Sunday morning with another cool frontal boundary pushing through. SPC does currently have our area under a marginal risk with that but the diurnal timing looks to perhaps limit the potential of the storms and will need to monitor that once we get through tonights event. && .AVIATION /00Z TAFS THROUGH 00Z SATURDAY/... Issued at 641 PM EDT Thu Jun 11 2026 Main focus remains on timing of convective line expected to track through KSBN mid-late evening and KFWA toward midnight. Shear and instability profiles definitely hint at the risk for strong to severe convection with a brief period of 50 kt plus winds and LIFR/IFR conditions possible with the leading line. VFR/dry then post-frontal into tomorrow otherwise with westerly winds up around 12 knots. && .IWX WATCHES/WARNINGS/ADVISORIES... IN...None. OH...None. MI...None. MARINE...Small Craft Advisory until 5 AM EDT Friday for LMZ043-046. && UPDATE...Steinwedel DISCUSSION...Andersen AVIATION...Steinwedel
Preliminary Local Storm Report
National Weather Service Northern Indiana
933 PM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0928 PM Tornado 3 ENE Wanatah 41.46N 86.83W
06/11/2026 La Porte IN Emergency Mngr
confirmed touchdown via EMA.
&&Preliminary Local Storm Report
National Weather Service Northern Indiana
1001 PM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0947 PM Tstm Wnd Dmg Clymers 40.71N 86.45W
06/11/2026 Cass IN Public
tree downed onto truck.
&&Preliminary Local Storm Report
National Weather Service Northern Indiana
1011 PM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0955 PM Tstm Wnd Dmg 3 NNE Dunkirk 40.79N 86.37W
06/11/2026 Cass IN Emergency Mngr
tree down.
&&Preliminary Local Storm Report
National Weather Service Northern Indiana
1022 PM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1007 PM Tstm Wnd Gst Peru 40.75N 86.07W
06/11/2026 E65 MPH Miami IN Public
&&Preliminary Local Storm Report
National Weather Service Northern Indiana
1033 PM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1018 PM Funnel Cloud 1 S Tippecanoe 41.20N 86.11W
06/11/2026 Marshall IN Public
&&Preliminary Local Storm Report
National Weather Service Northern Indiana
1037 PM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1015 PM Tstm Wnd Dmg 3 WNW Old Tip Town 41.24N 86.16W
06/11/2026 Marshall IN Emergency Mngr
trees and power lines down in the county,
especially along the 331 corridor and across
10 to Argos.
&&The Northern Indiana radar (KIWX), 54 km away, was scanning. The volume nearest the first event began at 02:42 UTC.
8 thunderstorm wind. Local standard time, as filed.
Shavehead Lake on the southside Chanel has very large trees uprooted and landed on a house, a gazebo was destroyed. A shed was also destroyed.
Emergency Manager reports that a truck was blown off the road.
Tree and utility pole down onto a house.
Trees and powerlines are down.
Large 1-2ft diameter healthy limb down. Several 6-8 inch diameter limbs downed in the area.
Emergency manager reports that powerlines are down.
Large branches, 6 inches to 1 foot in diameter, are down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2026Every state in 2026This day in weather historyWarnings in Michigan, June 2026
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: 1337183, 1337185, 1337186, 1337188, 1337195, 1337190, 1337192, 1337194.