Alert archive / Indiana / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 258, NWS Northern Indiana

August 11, 2026LaPorte County, Saint Joseph County, Indiana; Berrien County, Michigan

NWS Northern Indiana issued this severe thunderstorm warning at Aug 11, 2026, 5:08 AM CDT for LaPorte County, Saint Joseph County, Indiana; Berrien County, Michigan. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 11, 2026, 5:08 AM CDT (10:08 UTC)
Expired: Aug 11, 2026, 6:00 AM CDT
In force: 52 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties LaPorte County, IN, Saint Joseph County, IN, Berrien County, MI

The radar

The Northern Indiana radar (KIWX), 75 km from the middle of the area, began a volume at 10:12 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 10.1 hours before the alert went out and 247 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2294 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 1527 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Aug 11, 12:39 AM CDT, 4 hours 29 minutes earlier.

Area forecast discussion, Aug 11, 12:39 AM CDT, 4 hours 29 minutes before

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In the hours before

Special weather statement, Aug 11, 2:48 AM CDT, 2 hours 20 minutes before

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Special weather statement, Aug 11, 2:50 AM CDT, 2 hours 18 minutes before

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Special weather statement, Aug 11, 3:07 AM CDT, 2 hours 1 minute before

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Local storm report, Aug 11, 3:08 AM CDT, 2 hours before

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Special weather statement, Aug 11, 3:35 AM CDT, 1 hour 33 minutes before

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Special weather statement, Aug 11, 4:27 AM CDT, 41 minutes before

Special Weather Statement
National Weather Service Northern Indiana
527 AM EDT Tue Aug 11 2026

INZ015-022>024-216-111000-
Miami IN-Wabash IN-Southern Kosciusko IN-Cass IN-Fulton IN-
527 AM EDT Tue Aug 11 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN WABASH...
SOUTHWESTERN KOSCIUSKO...FULTON...NORTHEASTERN CASS AND NORTHWESTERN
MIAMI COUNTIES THROUGH 600 AM EDT...

At 527 AM EDT, Doppler radar was tracking a strong thunderstorm 7
miles southwest of Rochester, moving east at 35 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Rochester, Akron, Silver Lake, Kewanna, Denver, Roann, Fulton, Macy,
Chili, Stockdale, Nyena Lake, Deedsville, Athens, Beaver Dam Lake,
Bruce Lake Station, Grass Creek, Beaver Dam, Fletcher, Lake Manitou,
and Gilead.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 4091 8648 4091 8647 4094 8647 4111 8643
      4109 8584 4083 8586
TIME...MOT...LOC 0927Z 275DEG 32KT 4100 8632

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

FISHER

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 7:05 PM CDT	Severe Thunderstorm Warning	IWX	Fulton, Kosciusko, Marshall	40 min
Aug 10, 7:20 PM CDT	Severe Thunderstorm Warning	IWX	Kosciusko, Marshall	25 min
Aug 10, 7:24 PM CDT	Tornado Warning	IWX	Pulaski, Starke	12 min
Aug 10, 7:27 PM CDT	Severe Thunderstorm Warning	IWX	Adams, Allen	48 min
Aug 10, 7:34 PM CDT	Severe Thunderstorm Warning	IWX	Elkhart, Kosciusko, LaGrange, Noble, Whitley	23 min
Aug 10, 7:36 PM CDT	Severe Thunderstorm Warning	IWX	Kosciusko, Marshall	39 min
Aug 10, 7:38 PM CDT	Severe Thunderstorm Warning	IWX	Cass, Fulton, Miami	41 min
Aug 10, 8:10 PM CDT	Severe Thunderstorm Warning	IWX	Adams	35 min
Aug 10, 8:18 PM CDT	Severe Thunderstorm Warning	IWX	Adams, Allen, Wells	27 min
Aug 10, 8:38 PM CDT	Areal Flood Advisory	IWX	Adams	3 hr
Aug 10, 11:56 PM CDT	Flood Watch	IWX	Adams, Allen, Blackford, Cass, DeKalb, Elkhart and 18 more	3 days
Aug 11, 12:58 AM CDT	Special Marine Warning	IWX		92 min
Aug 11, 3:35 AM CDT	Special Weather Statement	IWX	Steuben	25 min
Aug 11, 4:17 AM CDT	Special Marine Warning	IWX		88 min
Aug 11, 4:27 AM CDT	Special Weather Statement	IWX	Fulton	33 min
Aug 11, 4:48 AM CDT	Severe Thunderstorm Warning	IWX	Fulton, Kosciusko, Marshall	27 min
Aug 11, 5:04 AM CDT	Areal Flood Advisory	IWX	Fulton, Pulaski, Starke	3 hr
Aug 11, 5:13 AM CDT	Special Weather Statement	IWX	Kosciusko	32 min
Aug 11, 5:40 AM CDT	Severe Thunderstorm Warning Considerable damage threat	IWX	LaPorte, Saint Joseph	35 min
Aug 11, 6:02 AM CDT	Areal Flood Advisory	IWX	Allen, Cass, Fulton, Huntington, Miami, Wabash and 1 more	2 hr
Aug 11, 6:06 AM CDT	Severe Thunderstorm Warning	IWX	Adams, Jay, Wells	39 min
Aug 11, 6:08 AM CDT	Severe Thunderstorm Warning	IWX	Elkhart, Kosciusko, Marshall, Noble, Saint Joseph	38 min
Aug 11, 6:30 AM CDT	Severe Thunderstorm Warning	IWX	Blackford, Grant, Huntington, Jay, Wells	45 min
Aug 11, 6:43 AM CDT	Severe Thunderstorm Warning	IWX	Adams, Jay	47 min
Aug 11, 6:56 AM CDT	Tornado Warning	IWX	Jay	24 min
Aug 11, 7:43 AM CDT	Severe Thunderstorm Warning	IWX	Cass	47 min
Aug 11, 8:10 AM CDT	Areal Flood Advisory	IWX	Cass, Fulton, Miami, Pulaski, Wabash	80 min
Aug 11, 8:11 AM CDT	Severe Thunderstorm Warning	IWX	Cass, Miami	24 min
Aug 11, 8:21 AM CDT	Severe Thunderstorm Warning	IWX	Pulaski	39 min
Aug 11, 9:00 AM CDT	Flash Flood Warning	IWX	Pulaski	2 hr
Aug 11, 9:00 AM CDT	Severe Thunderstorm Warning	IWX	Pulaski	45 min
Aug 11, 9:09 AM CDT	Severe Thunderstorm Warning	IWX	LaPorte, Pulaski, Starke	51 min
Aug 11, 9:28 AM CDT	Flash Flood Warning	IWX	Cass, Fulton, Miami	92 min
Aug 11, 9:59 AM CDT	Flash Flood Warning	IWX	Fulton, Marshall, Pulaski, Starke	61 min
Aug 11, 9:59 AM CDT	Severe Thunderstorm Warning Considerable damage threat	IWX	Starke	46 min
Aug 11, 10:28 AM CDT	Severe Thunderstorm Warning Destructive damage threat	IWX	LaPorte, Starke	36 min
Aug 11, 10:34 AM CDT	Severe Thunderstorm Warning	IWX	Blackford, Cass, Grant, Huntington, Miami, Wabash and 1 more	41 min
Aug 11, 10:43 AM CDT	Severe Thunderstorm Warning Considerable damage threat	IWX	Pulaski	20 min
Aug 11, 10:57 AM CDT	Flash Flood Warning	IWX	Cass, Fulton, LaPorte, Miami, Pulaski, Starke and 1 more	3 hr
Aug 11, 11:09 AM CDT	Severe Thunderstorm Warning	IWX	Cass, Fulton, Pulaski	51 min
Aug 11, 11:11 AM CDT	Severe Thunderstorm Warning	IWX	Adams, Blackford, Grant, Jay, Wells	64 min
Aug 11, 11:14 AM CDT	Tornado Warning	IWX	LaPorte	46 min
Aug 11, 11:20 AM CDT	Tornado Warning	IWX	Pulaski, Starke	40 min
Aug 11, 11:22 AM CDT	Special Marine Warning	IWX		38 min
Aug 11, 11:26 AM CDT	Areal Flood Advisory	IWX	Blackford, Grant, Huntington, Miami, Wabash, Wells	2 hr
Aug 11, 11:33 AM CDT	Severe Thunderstorm Warning	IWX	Grant, Miami, Wabash	42 min
Aug 11, 11:34 AM CDT	Tornado Warning	IWX	Elkhart, Kosciusko, Marshall, Saint Joseph	56 min
Aug 11, 11:42 AM CDT	Severe Thunderstorm Warning Considerable damage threat	IWX	White	29 min
Aug 11, 11:46 AM CDT	Flash Flood Warning Considerable damage threat	IWX	LaPorte, Pulaski, Starke	101 min
Aug 11, 11:51 AM CDT	Severe Thunderstorm Warning Considerable damage threat	IWX	Cass, Fulton, Miami, Pulaski, White	39 min
Aug 11, 12:01 PM CDT	Severe Thunderstorm Warning	IWX	Cass, Miami	28 min
Aug 11, 12:10 PM CDT	Severe Thunderstorm Warning Destructive damage threat	IWX	Elkhart, Kosciusko, LaGrange, Noble, Whitley	46 min
Aug 11, 12:39 PM CDT	Severe Thunderstorm Warning	IWX	Allen, DeKalb	51 min
Aug 11, 12:47 PM CDT	Areal Flood Advisory	IWX	Cass, Miami	118 min
Aug 11, 1:25 PM CDT	Areal Flood Warning	IWX	Cass, Fulton, Grant, LaPorte, Marshall, Miami and 4 more	6 hr
Aug 11, 1:47 PM CDT	Areal Flood Advisory	IWX	Blackford, Grant, Jay, Wells	104 min
Aug 10, 8:41 PM CDT	Severe Thunderstorm Warning	IWX	Allen, Van Wert	49 min
Aug 10, 8:44 PM CDT	Severe Thunderstorm Warning	IWX	Putnam	18 min
Aug 10, 9:06 PM CDT	Severe Thunderstorm Warning	IWX	Defiance, Henry, Paulding, Putnam	24 min
Aug 10, 10:31 PM CDT	Severe Thunderstorm Warning	IWX	Fulton	29 min
Aug 11, 3:24 AM CDT	Severe Thunderstorm Warning	IWX	Fulton	51 min
Aug 11, 7:28 AM CDT	Special Weather Statement	IWX	Allen, Putnam	17 min
Aug 11, 12:51 AM CDT	Special Weather Statement	IWX	Berrien	24 min
Aug 11, 1:17 AM CDT	Special Weather Statement	IWX	Berrien	28 min
Aug 11, 1:46 AM CDT	Severe Thunderstorm Warning	IWX	Berrien, Cass	29 min
Aug 11, 2:48 AM CDT	Special Weather Statement	IWX	Hillsdale	27 min
Aug 11, 2:50 AM CDT	Special Weather Statement	IWX	Cass	25 min
Aug 11, 3:07 AM CDT	Special Weather Statement	IWX	Cass	23 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2026 Severe Thunderstorm Warnings in Michigan, 2026 Every severe thunderstorm warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.