Weather alerts in Lake County, Indiana, 2025

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

Lake County and its neighbors

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

Alerts: 135
Warnings: 34
Watches: 19
Advisories: 42
Busiest month: March29 alerts
Busiest day: March 30, 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.

2 of 5 tornado warnings covering Lake County in 2025 had a tornado report inside them; 4 of 6 tornado reports fell inside a warning, on average 14 minutes after it went out.

Lake County, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	5	2	60%	6	67%	14 min
Severe thunderstorm warnings	15	10	33%	27	89%	27 min
Flash flood warnings	5	3	40%	9	89%	57 min

Each office's whole area, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Chicago, IL: tornado warnings	19	6	68%	23	48%	11 min
NWS Chicago, IL: severe thunderstorm warnings	137	95	31%	628	86%	25 min
NWS Chicago, IL: flash flood warnings	34	19	44%	130	78%	56 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.

Issued	Product	Office	Lasted
Jan 18, 1:21 PM CST	Cold Weather Advisory	LOT	46 hr
Jan 19, 12:58 PM CST	Cold Weather Advisory	LOT	59 hr
Jan 27, 3:26 AM CST	Fire Weather Watch	LOT	7 hr
Jan 30, 8:28 PM CST	Dense Fog Advisory	LOT	13 hr
Jan 31, 1:07 AM CST	Flood Watch	LOT	14 hr
Feb 4, 2:21 PM CST	Winter Weather Advisory	LOT	40 hr
Feb 8, 2:00 AM CST	Winter Weather Advisory	LOT	16 hr
Feb 10, 1:15 PM CST	Winter Storm Watch	LOT	22 hr
Feb 11, 11:41 AM CST	Winter Weather Advisory	LOT	39 hr
Feb 27, 12:35 AM CST	Dense Fog Advisory	LOT	6 hr
Feb 27, 1:55 PM CST	Wind Advisory	LOT	31 hr
Mar 4, 3:06 PM CST	Wind Advisory	LOT	33 hr
Mar 4, 3:08 PM CST	Lakeshore Flood Advisory	LOT	37 hr
Mar 4, 8:41 PM CST	River Flood Warning	LOT	14 hr
Mar 5, 2:53 AM CST	Areal Flood Advisory	LOT	8 hr
Mar 5, 11:07 AM CST	Areal Flood Advisory	LOT	6 hr
Mar 13, 3:40 AM CDT	High Wind Watch	LOT	35 hr
Mar 13, 3:40 AM CDT	Wind Advisory	LOT	51 hr
Mar 13, 10:36 AM CDT	Fire Weather Watch	LOT	24 hr
Mar 14, 4:11 AM CDT	Red Flag Warning	LOT	20 hr
Mar 14, 2:26 PM CDT	High Wind Warning	LOT	18 hr
Mar 14, 2:26 PM CDT	Wind Advisory	LOT	26 hr
Mar 14, 6:55 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Mar 14, 11:57 PM CDT	Mesoscale Discussion	SPC	63 min
Mar 15, 1:02 AM CDT	Special Weather Statement	LOT	73 min
Mar 15, 1:13 AM CDT	Tornado Warning	LOT	17 min
Mar 15, 1:23 AM CDT	Tornado Warning	LOT	22 min
Mar 19, 2:57 AM CDT	Wind Advisory	LOT	28 hr
Mar 19, 5:27 PM CDT	Severe Thunderstorm Warning	LOT	56 min
Mar 19, 5:29 PM CDT	Tornado Warning	LOT	31 min
Mar 19, 5:38 PM CDT	Tornado Warning	LOT	20 min
Mar 20, 12:03 AM CDT	Winter Weather Advisory	LOT	7 hr
Mar 23, 3:15 AM CDT	Wind Advisory	LOT	21 hr
Mar 30, 12:43 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 30, 1:13 PM CDT	Tornado Watch	SPC	5 hr
Mar 30, 2:05 PM CDT	Mesoscale Discussion	SPC	115 min
Mar 30, 2:15 PM CDT	Severe Thunderstorm Warning	LOT	60 min
Mar 30, 2:17 PM CDT	Severe Thunderstorm Warning	LOT	43 min
Mar 30, 2:28 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	56 min
Mar 30, 2:30 PM CDT	Tornado Warning	LOT	30 min
Apr 2, 9:48 AM CDT	Mesoscale Discussion	SPC	117 min
Apr 2, 11:47 AM CDT	Areal Flood Advisory	LOT	3 hr
Apr 2, 3:17 PM CDT	Tornado Watch	SPC	7 hr
May 15, 5:15 PM CDT	Tornado Watch	SPC	4 hr
May 15, 8:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	62 min
May 16, 10:56 AM CDT	Wind Advisory	LOT	10 hr
May 16, 5:32 PM CDT	Dust Storm Warning	LOT	94 min
May 16, 6:00 PM CDT	Dust Storm Warning	LOT	75 min
May 21, 3:09 AM CDT	Beach Hazards Statement	LOT	46 hr
Jun 8, 5:35 PM CDT	Special Weather Statement	LOT	40 min
Jun 18, 10:57 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 18, 12:01 PM CDT	Tornado Watch	SPC	7 hr
Jun 18, 12:44 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 18, 1:57 PM CDT	Severe Thunderstorm Warning	LOT	63 min
Jun 20, 3:50 AM CDT	Heat Advisory	LOT	5 days
Jun 24, 12:36 PM CDT	Mesoscale Discussion	SPC	114 min
Jun 26, 7:20 PM CDT	Special Weather Statement	LOT	40 min
Jun 26, 8:04 PM CDT	Severe Thunderstorm Warning	LOT	37 min
Jul 5, 8:55 PM CDT	Beach Hazards Statement	LOT	48 hr
Jul 9, 2:55 AM CDT	Beach Hazards Statement	LOT	31 hr
Jul 16, 12:37 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 16, 3:41 PM CDT	Beach Hazards Statement	LOT	36 hr
Jul 16, 4:00 PM CDT	Special Weather Statement	LOT	45 min
Jul 16, 4:08 PM CDT	Severe Thunderstorm Warning	LOT	67 min
Jul 19, 2:43 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 19, 4:23 PM CDT	Beach Hazards Statement	LOT	41 hr
Jul 22, 3:21 AM CDT	Heat Advisory	LOT	64 hr
Jul 24, 2:10 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 24, 2:31 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 24, 2:43 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	47 min
Jul 24, 3:42 PM CDT	Special Weather Statement	LOT	33 min
Jul 24, 4:02 PM CDT	Special Weather Statement	LOT	13 min
Jul 24, 4:39 PM CDT	Mesoscale Discussion	SPC	96 min
Jul 25, 11:49 AM CDT	Flood Watch	LOT	27 hr
Jul 26, 11:27 AM CDT	Areal Flood Advisory	LOT	2 hr
Jul 27, 1:27 PM CDT	Heat Advisory	LOT	31 hr
Jul 27, 4:17 PM CDT	Areal Flood Advisory	LOT	118 min
Jul 28, 1:08 PM CDT	Severe Thunderstorm Warning	LOT	23 min
Jul 29, 3:28 PM CDT	Beach Hazards Statement	LOT	3 days
Jul 30, 3:18 AM CDT	Flood Watch	LOT	25 hr
Jul 30, 12:02 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 30, 12:57 PM CDT	Areal Flood Advisory	LOT	5 hr
Jul 30, 1:56 PM CDT	Flash Flood Warning	LOT	3 hr
Aug 12, 11:33 AM CDT	Flood Watch	LOT	8 hr
Aug 12, 2:44 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 12, 3:57 PM CDT	Special Weather Statement	LOT	48 min
Aug 12, 4:09 PM CDT	Areal Flood Advisory	LOT	3 hr
Aug 16, 1:56 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 16, 2:34 PM CDT	Mesoscale Discussion	SPC	86 min
Aug 16, 4:44 PM CDT	Mesoscale Discussion	SPC	61 min
Aug 16, 4:49 PM CDT	Severe Thunderstorm Warning	LOT	26 min
Aug 16, 6:45 PM CDT	Severe Thunderstorm Warning	LOT	45 min
Aug 17, 1:21 AM CDT	Areal Flood Advisory	LOT	3 hr
Aug 17, 2:04 AM CDT	Areal Flood Advisory	LOT	3 hr
Aug 17, 2:32 AM CDT	Flash Flood Warning	LOT	118 min
Aug 17, 2:59 AM CDT	Severe Thunderstorm Warning	LOT	46 min
Aug 17, 3:28 AM CDT	Severe Thunderstorm Warning	LOT	47 min
Aug 17, 4:30 AM CDT	Areal Flood Advisory	LOT	3 hr
Aug 17, 5:16 AM CDT	Beach Hazards Statement	LOT	34 hr
Aug 18, 2:21 PM CDT	Flood Watch	LOT	13 hr
Aug 18, 5:34 PM CDT	Mesoscale Discussion	SPC	86 min
Aug 18, 8:21 PM CDT	Flash Flood Warning	LOT	3 hr
Aug 18, 8:26 PM CDT	Flash Flood Warning Considerable damage threat	LOT	3 hr
Aug 18, 11:33 PM CDT	Areal Flood Warning	LOT	13 hr
Aug 18, 11:33 PM CDT	Areal Flood Advisory	LOT	13 hr
Aug 19, 12:38 AM CDT	Flash Flood Warning	LOT	112 min
Aug 19, 4:18 AM CDT	Beach Hazards Statement	LOT	57 hr
Aug 19, 10:53 AM CDT	Areal Flood Advisory	LOT	6 hr
Aug 23, 3:20 AM CDT	Beach Hazards Statement	LOT	4 days
Aug 27, 2:44 PM CDT	Beach Hazards Statement	LOT	47 hr
Sep 3, 3:39 AM CDT	Beach Hazards Statement	LOT	35 hr
Sep 13, 8:21 AM CDT	Special Weather Statement	LOT	39 min
Sep 13, 1:48 PM CDT	Severe Thunderstorm Warning	LOT	27 min
Sep 21, 5:51 PM CDT	Special Weather Statement	LOT	24 min
Sep 23, 4:56 PM CDT	Beach Hazards Statement	LOT	44 hr
Oct 8, 1:33 PM CDT	Frost Advisory	LOT	18 hr
Oct 23, 3:07 AM CDT	Freeze Warning	LOT	29 hr
Nov 8, 2:27 AM CST	Winter Storm Watch	LOT	24 hr
Nov 9, 2:24 AM CST	Winter Storm Warning	LOT	31 hr
Nov 9, 2:24 AM CST	Winter Weather Advisory	LOT	36 hr
Nov 9, 9:55 PM CST	Mesoscale Discussion	SPC	5 hr
Nov 10, 3:52 AM CST	Mesoscale Discussion	SPC	3 hr
Nov 10, 8:47 AM CST	Mesoscale Discussion	SPC	5 hr
Nov 25, 2:03 AM CST	Wind Advisory	LOT	42 hr
Nov 27, 3:07 AM CST	Winter Storm Watch	LOT	32 hr
Nov 28, 2:03 AM CST	Winter Storm Warning	LOT	48 hr
Nov 30, 1:51 AM CST	Winter Weather Advisory	LOT	10 hr
Dec 1, 1:54 AM CST	Winter Weather Advisory	LOT	25 hr
Dec 6, 2:34 AM CST	Winter Weather Advisory	LOT	32 hr
Dec 10, 9:12 AM CST	Special Weather Statement	LOT	63 min
Dec 12, 2:28 PM CST	Cold Weather Advisory	LOT	46 hr
Dec 26, 5:19 AM CST	Dense Fog Advisory	LOT	6 hr
Dec 27, 1:25 PM CST	Wind Advisory	LOT	50 hr
Dec 28, 10:44 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 28, 1:17 PM CST	Areal Flood Advisory	LOT	5 hr

By product

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

Product	Alerts
Severe storms
Severe Thunderstorm Warning	15
Tornado Warning	5
Severe Thunderstorm Watch	4
Tornado Watch	4
Mesoscale Discussion	18
Special Weather Statement	10
Flooding
Areal Flood Warning	1
Flash Flood Warning	5
River Flood Warning	1
Flood Watch	5
Areal Flood Advisory	14
Winter
Winter Storm Warning	2
Winter Storm Watch	3
Winter Weather Advisory	8
Heat
Heat Advisory	3
Cold
Freeze Warning	1
Cold Weather Advisory	3
Frost Advisory	1
Wind and dust
Dust Storm Warning	2
High Wind Warning	1
High Wind Watch	1
Wind Advisory	9
Fire
Red Flag Warning	1
Fire Weather Watch	2
Fog and smoke
Dense Fog Advisory	3
Coast and beach
Lakeshore Flood Advisory	1
Beach Hazards Statement	12

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2024 2026

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.