Alert archive / Indiana / LaPorte County

Weather alerts in LaPorte County, Indiana, 2025

110 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

LaPorte County and its neighbors

Each county as a circle sized by its count in 2025. Tap one for its archive.

Alerts
110
Warnings
19
Watches
14
Advisories
38
Busiest month
June21 alerts
Busiest day
June 18, 20257 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

0 of 1 tornado warnings covering LaPorte County in 2025 had a tornado report inside them.

LaPorte County, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings13838%2391%19 min
Flash flood warnings10100%0

Each office's whole area, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Northern Indiana: tornado warnings14471%1625%7 min
NWS Northern Indiana: severe thunderstorm warnings1286351%39383%22 min
NWS Northern Indiana: flash flood warnings3167%633%52 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

The alerts

Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 10, 2:19 AM CSTWinter Weather AdvisoryIWX31 hr
Jan 18, 1:47 AM CSTExtreme Cold WatchIWX24 hr
Jan 19, 1:30 AM CSTCold Weather AdvisoryIWX3 days
Jan 31, 1:20 AM CSTDense Fog AdvisoryIWX8 hr
Feb 2, 7:14 PM CSTDense Fog AdvisoryIWX10 hr
Feb 5, 1:49 AM CSTWinter Weather AdvisoryIWX31 hr
Feb 8, 2:29 AM CSTWinter Weather AdvisoryIWX18 hr
Feb 10, 1:30 PM CSTWinter Storm WatchIWX23 hr
Feb 11, 12:59 PM CSTWinter Weather AdvisoryIWX41 hr
Feb 14, 1:56 PM CSTWinter Weather AdvisoryIWX22 hr
Feb 15, 1:52 PM CSTWinter Weather AdvisoryIWX28 hr
Feb 19, 1:27 AM CSTWinter Weather AdvisoryIWX43 hr
Feb 27, 1:49 PM CSTWind AdvisoryIWX28 hr
Mar 5, 3:06 AM CSTWind AdvisoryIWX22 hr
Mar 14, 12:02 AM CDTHigh Wind WatchIWX21 hr
Mar 14, 8:34 PM CDTWind AdvisoryIWX22 hr
Mar 14, 11:57 PM CDTMesoscale DiscussionSPC63 min
Mar 15, 12:18 AM CDTSevere Thunderstorm WatchSPC5 hr
Mar 15, 2:20 AM CDTSevere Thunderstorm WarningIWX40 min
Mar 15, 2:44 AM CDTSevere Thunderstorm WarningIWX31 min
Mar 19, 5:55 PM CDTSevere Thunderstorm WatchSPC5 hr
Mar 19, 6:05 PM CDTSevere Thunderstorm WarningIWX55 min
Mar 30, 12:43 PM CDTMesoscale DiscussionSPC2 hr
Mar 30, 1:13 PM CDTTornado WatchSPC5 hr
Mar 30, 2:05 PM CDTMesoscale DiscussionSPC115 min
Mar 30, 2:51 PM CDTSevere Thunderstorm WarningIWX69 min
Apr 2, 3:17 PM CDTTornado WatchSPC7 hr
Apr 2, 5:39 PM CDTSevere Thunderstorm WarningIWX81 min
Apr 2, 6:29 PM CDTTornado WarningIWX31 min
Apr 2, 6:44 PM CDTSevere Thunderstorm Warning Considerable damage threatIWX51 min
Apr 26, 1:14 PM CDTFrost AdvisoryIWX18 hr
May 15, 6:50 PM CDTMesoscale DiscussionSPC85 min
May 15, 8:30 PM CDTTornado WatchSPC3 hr
May 15, 8:57 PM CDTSevere Thunderstorm WarningIWX34 min
May 16, 6:23 PM CDTBlowing Dust AdvisoryIWX3 hr
May 21, 3:11 AM CDTBeach Hazards StatementIWX46 hr
Jun 18, 10:57 AM CDTMesoscale DiscussionSPC2 hr
Jun 18, 12:01 PM CDTTornado WatchSPC7 hr
Jun 18, 12:44 PM CDTMesoscale DiscussionSPC2 hr
Jun 18, 1:31 PM CDTSevere Thunderstorm Warning Considerable damage threatIWX59 min
Jun 18, 2:30 PM CDTSevere Thunderstorm Warning Considerable damage threatIWX45 min
Jun 18, 2:38 PM CDTMesoscale DiscussionSPC2 hr
Jun 18, 2:52 PM CDTSevere Thunderstorm WarningIWX38 min
Jun 19, 4:03 PM CDTSpecial Weather StatementIWX42 min
Jun 20, 12:11 AM CDTExtreme Heat WatchIWX50 hr
Jun 21, 3:02 AM CDTHeat AdvisoryIWX23 hr
Jun 22, 2:30 AM CDTExtreme Heat WarningIWX65 hr
Jun 24, 12:36 PM CDTMesoscale DiscussionSPC114 min
Jun 25, 1:43 AM CDTHeat AdvisoryIWX17 hr
Jun 26, 2:42 AM CDTHeat AdvisoryIWX16 hr
Jun 26, 8:01 PM CDTSpecial Weather StatementIWX44 min
Jun 26, 10:48 PM CDTSpecial Weather StatementIWX27 min
Jun 27, 2:09 AM CDTHeat AdvisoryIWX16 hr
Jun 30, 2:59 PM CDTSpecial Weather StatementIWX31 min
Jun 30, 3:29 PM CDTAreal Flood AdvisoryIWX4 hr
Jun 30, 4:12 PM CDTSevere Thunderstorm WarningIWX48 min
Jun 30, 4:43 PM CDTAreal Flood AdvisoryIWX4 hr
Jul 6, 12:09 PM CDTMesoscale DiscussionSPC2 hr
Jul 6, 2:00 PM CDTBeach Hazards StatementIWX31 hr
Jul 9, 3:13 AM CDTBeach Hazards StatementIWX22 hr
Jul 16, 2:34 PM CDTBeach Hazards StatementIWX34 hr
Jul 16, 4:28 PM CDTMesoscale DiscussionSPC62 min
Jul 16, 4:45 PM CDTSevere Thunderstorm WarningIWX60 min
Jul 16, 4:49 PM CDTSevere Thunderstorm WatchSPC3 hr
Jul 18, 1:21 AM CDTBeach Hazards StatementIWX3 hr
Jul 19, 2:18 PM CDTAreal Flood AdvisoryIWX3 hr
Jul 19, 3:12 PM CDTFlash Flood WarningIWX3 hr
Jul 22, 2:12 AM CDTHeat AdvisoryIWX65 hr
Jul 24, 2:10 PM CDTMesoscale DiscussionSPC2 hr
Jul 24, 2:31 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 24, 4:11 PM CDTSevere Thunderstorm WarningIWX34 min
Jul 24, 4:39 PM CDTMesoscale DiscussionSPC96 min
Jul 27, 12:44 AM CDTHeat AdvisoryIWX19 hr
Jul 27, 1:24 PM CDTHeat AdvisoryIWX31 hr
Jul 28, 11:27 PM CDTHeat AdvisoryIWX21 hr
Jul 30, 12:02 PM CDTMesoscale DiscussionSPC2 hr
Jul 30, 3:04 PM CDTBeach Hazards StatementIWX47 hr
Aug 12, 2:44 PM CDTMesoscale DiscussionSPC2 hr
Aug 17, 4:25 AM CDTBeach Hazards StatementIWX18 hr
Aug 18, 9:03 PM CDTSpecial Weather StatementIWX42 min
Aug 18, 9:38 PM CDTAreal Flood AdvisoryIWX3 hr
Aug 19, 1:52 AM CDTSpecial Weather StatementIWX53 min
Aug 19, 4:42 AM CDTAreal Flood AdvisoryIWX4 hr
Aug 19, 4:45 AM CDTBeach Hazards StatementIWX56 hr
Aug 23, 8:12 AM CDTBeach Hazards StatementIWX3 days
Aug 27, 9:34 AM CDTBeach Hazards StatementIWX54 hr
Sep 3, 3:39 AM CDTBeach Hazards StatementIWX35 hr
Sep 4, 2:40 PM CDTBeach Hazards StatementIWX61 hr
Sep 21, 6:45 PM CDTSpecial Weather StatementIWX45 min
Sep 24, 3:25 AM CDTBeach Hazards StatementIWX34 hr
Sep 26, 12:51 AM CDTDense Fog AdvisoryIWX8 hr
Oct 8, 12:52 PM CDTFrost AdvisoryIWX19 hr
Oct 18, 3:27 PM CDTSpecial Weather StatementIWX33 min
Oct 23, 1:12 AM CDTFrost AdvisoryIWX31 hr
Oct 24, 12:23 PM CDTFreeze WarningIWX20 hr
Nov 8, 1:46 AM CSTWinter Storm WatchIWX24 hr
Nov 9, 2:03 AM CSTWinter Storm WarningIWX33 hr
Nov 9, 9:55 PM CSTMesoscale DiscussionSPC5 hr
Nov 10, 8:47 AM CSTMesoscale DiscussionSPC5 hr
Nov 10, 11:21 AM CSTWinter Weather AdvisoryIWX15 hr
Nov 10, 12:44 PM CSTSpecial Weather StatementIWX31 min
Nov 25, 9:30 AM CSTWind AdvisoryIWX39 hr
Nov 27, 1:40 PM CSTWinter Storm WatchIWX22 hr
Nov 28, 12:01 PM CSTWinter Storm WarningIWX54 hr
Dec 1, 2:14 AM CSTWinter Weather AdvisoryIWX28 hr
Dec 27, 12:44 PM CSTWind AdvisoryIWX52 hr
Dec 27, 10:49 PM CSTDense Fog AdvisoryIWX5 hr
Dec 28, 10:44 AM CSTMesoscale DiscussionSPC2 hr
Dec 28, 12:24 PM CSTAreal Flood AdvisoryIWX3 hr
Dec 28, 12:40 PM CSTWinter Weather AdvisoryIWX35 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20242026

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.