Weather alerts in Lake County, Indiana, 2019

177 weather alerts in 2019, 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 2019. Tap one for its archive.

Alerts: 177
Warnings: 55
Watches: 23
Advisories: 58
Busiest month: June33 alerts
Busiest day: June 27, 201915 alerts

Over time

By month

Warning verification

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

1 of 2 tornado warnings covering Lake County in 2019 had a tornado report inside them; 1 of 2 tornado reports fell inside a warning, on average 18 minutes after it went out.

Lake County, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	1	50%	2	50%	18 min
Severe thunderstorm warnings	23	13	43%	15	73%	14 min
Flash flood warnings	5	3	40%	2	50%	22 min

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Chicago, IL: tornado warnings	18	3	83%	9	44%	17 min
NWS Chicago, IL: severe thunderstorm warnings	127	72	43%	281	75%	24 min
NWS Chicago, IL: flash flood warnings	23	9	61%	40	57%	110 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 1, 8:03 PM CST	River Flood Watch	LOT	14 hr
Jan 2, 6:04 AM CST	Winter Weather Advisory	LOT	5 hr
Jan 2, 10:24 AM CST	River Flood Warning	LOT	72 hr
Jan 7, 2:10 PM CST	Wind Advisory	LOT	33 hr
Jan 11, 3:15 AM CST	Winter Weather Advisory	LOT	48 hr
Jan 14, 1:45 PM CST	Winter Weather Advisory	LOT	16 hr
Jan 17, 12:13 PM CST	Winter Storm Watch	LOT	15 hr
Jan 18, 3:23 AM CST	Winter Storm Warning	LOT	35 hr
Jan 18, 2:54 PM CST	Lakeshore Flood Advisory	LOT	42 hr
Jan 19, 2:33 PM CST	Winter Weather Advisory	LOT	33 hr
Jan 19, 11:13 PM CST	Mesoscale Discussion	SPC	4 hr
Jan 20, 9:05 AM CST	Winter Storm Warning	LOT	7 hr
Jan 21, 1:57 PM CST	Winter Weather Advisory	LOT	46 hr
Jan 22, 6:00 PM CST	Mesoscale Discussion	SPC	6 hr
Jan 23, 3:00 PM CST	Wind Chill Advisory	LOT	45 hr
Jan 27, 3:01 AM CST	Winter Weather Advisory	LOT	45 hr
Jan 27, 7:26 PM CST	River Flood Warning	LOT	21 days
Jan 28, 3:01 AM CST	Wind Chill Watch	LOT	11 hr
Jan 28, 1:36 PM CST	Wind Chill Warning	LOT	70 hr
Jan 28, 1:36 PM CST	Wind Chill Advisory	LOT	28 hr
Feb 2, 7:12 PM CST	Dense Fog Advisory	LOT	6 hr
Feb 3, 10:01 AM CST	River Flood Advisory	LOT	24 hr
Feb 4, 2:05 PM CST	Winter Weather Advisory	LOT	34 hr
Feb 7, 9:21 AM CST	Dense Fog Advisory	LOT	5 hr
Feb 7, 12:14 PM CST	Wind Advisory	LOT	15 hr
Feb 10, 2:43 PM CST	Winter Weather Advisory	LOT	60 hr
Feb 11, 9:59 PM CST	Ice Storm Warning	LOT	11 hr
Feb 12, 3:44 AM CST	Wind Advisory	LOT	23 hr
Feb 12, 7:57 AM CST	Dense Fog Advisory	LOT	2 hr
Feb 19, 3:35 AM CST	Winter Weather Advisory	LOT	35 hr
Feb 22, 3:06 PM CST	High Wind Watch	LOT	23 hr
Feb 23, 2:07 PM CST	High Wind Warning	LOT	31 hr
Feb 23, 10:57 PM CST	Special Weather Statement	LOT	48 min
Mar 9, 2:29 PM CST	Wind Advisory	LOT	16 hr
Mar 12, 10:44 AM CDT	River Flood Watch	LOT	10 hr
Mar 13, 2:42 PM CDT	Wind Advisory	LOT	31 hr
Mar 14, 10:54 AM CDT	Mesoscale Discussion	SPC	96 min
Mar 14, 12:24 PM CDT	Tornado Watch	SPC	2 hr
Mar 14, 1:35 PM CDT	Severe Thunderstorm Warning	LOT	25 min
Mar 14, 1:38 PM CDT	Severe Thunderstorm Warning	LOT	41 min
Mar 14, 1:48 PM CDT	Severe Thunderstorm Warning	LOT	42 min
Mar 15, 10:47 AM CDT	River Flood Warning	LOT	5 days
Mar 24, 4:00 AM CDT	Lakeshore Flood Advisory	LOT	33 hr
Mar 29, 7:23 PM CDT	River Flood Watch	LOT	3 days
Mar 30, 3:20 AM CDT	Lakeshore Flood Advisory	LOT	31 hr
Apr 2, 5:45 AM CDT	River Flood Warning	LOT	54 hr
Apr 6, 5:03 AM CDT	Dense Fog Advisory	LOT	4 hr
Apr 7, 6:19 PM CDT	Special Weather Statement	LOT	41 min
Apr 10, 2:52 PM CDT	Wind Advisory	LOT	27 hr
Apr 12, 3:23 AM CDT	Wind Advisory	LOT	17 hr
Apr 14, 4:09 AM CDT	Lakeshore Flood Advisory	LOT	24 hr
Apr 14, 10:01 PM CDT	River Flood Watch	LOT	12 hr
Apr 15, 10:27 AM CDT	River Flood Warning	LOT	7 days
Apr 18, 3:25 AM CDT	Lakeshore Flood Advisory	LOT	42 hr
Apr 29, 9:08 AM CDT	River Flood Warning	LOT	40 days
Apr 29, 2:25 PM CDT	River Flood Advisory	LOT	17 hr
Apr 30, 7:43 AM CDT	River Flood Advisory	LOT	2 hr
Apr 30, 9:39 AM CDT	River Flood Warning	LOT	3 days
Apr 30, 2:44 PM CDT	Flash Flood Watch	LOT	17 hr
May 1, 2:14 PM CDT	Flash Flood Watch	LOT	27 hr
May 16, 12:51 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 16, 1:12 PM CDT	Severe Thunderstorm Warning	LOT	48 min
May 16, 10:54 PM CDT	Severe Thunderstorm Warning	LOT	36 min
May 16, 11:20 PM CDT	Severe Thunderstorm Warning	LOT	40 min
May 16, 11:51 PM CDT	Severe Thunderstorm Warning	LOT	23 min
May 21, 4:22 AM CDT	Beach Hazards Statement	LOT	32 hr
May 22, 10:26 PM CDT	Tornado Watch	SPC	8 hr
May 23, 1:23 AM CDT	Mesoscale Discussion	SPC	97 min
May 23, 1:54 AM CDT	Severe Thunderstorm Warning	LOT	65 min
May 23, 2:15 AM CDT	Areal Flood Advisory	LOT	3 hr
May 24, 3:33 AM CDT	Flash Flood Watch	LOT	22 hr
May 27, 12:50 PM CDT	Mesoscale Discussion	SPC	85 min
May 27, 1:22 PM CDT	Tornado Watch	SPC	9 hr
May 27, 2:44 PM CDT	Severe Thunderstorm Warning	LOT	61 min
May 27, 3:34 PM CDT	Severe Thunderstorm Warning	LOT	56 min
May 27, 3:57 PM CDT	Mesoscale Discussion	SPC	93 min
May 27, 4:00 PM CDT	Severe Thunderstorm Warning	LOT	45 min
May 27, 4:14 PM CDT	Tornado Warning	LOT	46 min
May 27, 4:17 PM CDT	Areal Flood Advisory	LOT	3 hr
May 27, 4:52 PM CDT	Tornado Warning	LOT	42 min
May 27, 5:30 PM CDT	Mesoscale Discussion	SPC	90 min
May 27, 6:10 PM CDT	Severe Thunderstorm Warning	LOT	21 min
May 28, 9:28 PM CDT	Areal Flood Advisory	LOT	6 hr
May 29, 9:33 PM CDT	River Flood Advisory	LOT	12 hr
Jun 1, 2:23 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 1, 5:21 PM CDT	Mesoscale Discussion	SPC	54 min
Jun 7, 3:21 AM CDT	Dense Fog Advisory	LOT	3 hr
Jun 9, 9:51 AM CDT	Beach Hazards Statement	LOT	33 hr
Jun 12, 3:40 AM CDT	Beach Hazards Statement	LOT	42 hr
Jun 12, 3:43 PM CDT	Lakeshore Flood Advisory	LOT	27 hr
Jun 15, 8:00 PM CDT	Dense Fog Advisory	LOT	14 hr
Jun 19, 2:49 PM CDT	Flash Flood Watch	LOT	18 hr
Jun 20, 3:16 AM CDT	Areal Flood Advisory	LOT	6 hr
Jun 20, 4:16 AM CDT	Beach Hazards Statement	LOT	14 hr
Jun 20, 9:24 AM CDT	Areal Flood Advisory	LOT	111 min
Jun 20, 9:44 AM CDT	River Flood Warning	LOT	10 days
Jun 24, 5:04 PM CDT	Special Weather Statement	LOT	26 min
Jun 25, 1:10 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 25, 6:36 PM CDT	Mesoscale Discussion	SPC	54 min
Jun 26, 8:45 PM CDT	Special Weather Statement	LOT	30 min
Jun 26, 8:55 PM CDT	Severe Thunderstorm Warning	LOT	50 min
Jun 26, 9:03 PM CDT	Flash Flood Warning	LOT	4 hr
Jun 26, 9:11 PM CDT	Severe Thunderstorm Warning	LOT	49 min
Jun 26, 9:43 PM CDT	Areal Flood Advisory	LOT	3 hr
Jun 26, 10:39 PM CDT	Flash Flood Warning	LOT	6 hr
Jun 27, 12:52 AM CDT	Flash Flood Warning	LOT	6 hr
Jun 27, 1:43 AM CDT	Special Weather Statement	LOT	32 min
Jun 27, 1:46 AM CDT	Flash Flood Warning	LOT	3 hr
Jun 27, 4:43 AM CDT	Areal Flood Warning	LOT	12 hr
Jun 27, 6:21 AM CDT	River Flood Advisory	LOT	11 hr
Jun 27, 10:06 AM CDT	River Flood Advisory	LOT	7 hr
Jun 27, 3:28 PM CDT	River Flood Warning	LOT	28 hr
Jun 27, 5:27 PM CDT	River Flood Warning	LOT	9 hr
Jun 27, 6:17 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 30, 11:43 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 30, 2:13 PM CDT	Severe Thunderstorm Warning	LOT	77 min
Jun 30, 3:04 PM CDT	Severe Thunderstorm Warning	LOT	71 min
Jul 2, 2:31 PM CDT	Mesoscale Discussion	SPC	89 min
Jul 6, 3:16 AM CDT	Beach Hazards Statement	LOT	48 hr
Jul 6, 3:16 AM CDT	Lakeshore Flood Advisory	LOT	38 hr
Jul 6, 1:54 PM CDT	Special Weather Statement	LOT	36 min
Jul 6, 2:04 PM CDT	Severe Thunderstorm Warning	LOT	41 min
Jul 10, 2:42 PM CDT	Beach Hazards Statement	LOT	36 hr
Jul 13, 7:24 PM CDT	Special Weather Statement	LOT	36 min
Jul 13, 7:56 PM CDT	Special Weather Statement	LOT	34 min
Jul 13, 8:09 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 13, 8:15 PM CDT	Severe Thunderstorm Warning	LOT	30 min
Jul 13, 8:33 PM CDT	Special Weather Statement	LOT	27 min
Jul 16, 2:30 PM CDT	Excessive Heat Watch	LOT	24 hr
Jul 17, 2:14 PM CDT	Excessive Heat Warning	LOT	3 days
Jul 21, 4:17 AM CDT	Beach Hazards Statement	LOT	49 hr
Jul 21, 2:12 PM CDT	Severe Thunderstorm Warning	LOT	63 min
Jul 22, 2:56 AM CDT	Lakeshore Flood Advisory	LOT	24 hr
Jul 30, 7:14 PM CDT	Beach Hazards Statement	LOT	24 hr
Aug 16, 4:32 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 17, 2:09 AM CDT	Special Weather Statement	LOT	51 min
Aug 17, 2:54 AM CDT	Severe Thunderstorm Warning	LOT	66 min
Aug 17, 8:00 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 18, 4:58 AM CDT	Severe Thunderstorm Warning	LOT	47 min
Aug 18, 5:44 AM CDT	Mesoscale Discussion	SPC	91 min
Aug 18, 6:06 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 18, 7:20 AM CDT	Severe Thunderstorm Warning	LOT	40 min
Aug 18, 7:40 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 18, 9:54 AM CDT	Areal Flood Advisory	LOT	118 min
Aug 20, 9:04 AM CDT	Mesoscale Discussion	SPC	86 min
Aug 22, 3:57 AM CDT	Beach Hazards Statement	LOT	59 hr
Sep 2, 4:47 AM CDT	Dense Fog Advisory	LOT	3 hr
Sep 3, 2:34 PM CDT	Beach Hazards Statement	LOT	31 hr
Sep 3, 3:54 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 6, 3:29 AM CDT	Beach Hazards Statement	LOT	31 hr
Sep 12, 6:40 PM CDT	Special Weather Statement	LOT	50 min
Sep 27, 1:43 PM CDT	Flash Flood Watch	LOT	16 hr
Sep 27, 5:52 PM CDT	Areal Flood Advisory	LOT	93 min
Sep 27, 6:50 PM CDT	Areal Flood Advisory	LOT	4 hr
Sep 27, 7:10 PM CDT	Severe Thunderstorm Warning	LOT	52 min
Sep 27, 7:21 PM CDT	Areal Flood Advisory	LOT	5 hr
Sep 27, 7:48 PM CDT	Flash Flood Warning	LOT	6 hr
Sep 27, 8:03 PM CDT	River Flood Warning	LOT	64 hr
Sep 27, 10:05 PM CDT	River Flood Advisory	LOT	17 hr
Sep 28, 1:42 AM CDT	Areal Flood Warning	LOT	6 hr
Sep 28, 4:10 AM CDT	Beach Hazards Statement	LOT	39 hr
Sep 28, 2:41 PM CDT	Flash Flood Watch	LOT	16 hr
Sep 28, 3:10 PM CDT	River Flood Warning	LOT	14 hr
Oct 13, 2:23 PM CDT	Frost Advisory	LOT	18 hr
Oct 17, 7:18 PM CDT	Frost Advisory	LOT	13 hr
Oct 26, 9:22 PM CDT	River Flood Warning	LOT	11 hr
Oct 30, 3:21 AM CDT	Lakeshore Flood Advisory	LOT	40 hr
Oct 31, 3:48 AM CDT	Wind Advisory	LOT	15 hr
Oct 31, 9:09 AM CDT	Lakeshore Flood Warning	LOT	16 hr
Nov 6, 4:00 AM CST	Lakeshore Flood Advisory	LOT	48 hr
Nov 10, 3:40 AM CST	Lakeshore Flood Watch	LOT	10 hr
Nov 10, 12:55 PM CST	Winter Weather Advisory	LOT	32 hr
Nov 10, 1:51 PM CST	Lakeshore Flood Warning	LOT	50 hr
Nov 25, 2:44 PM CST	High Wind Watch	LOT	23 hr
Nov 26, 1:26 PM CST	High Wind Warning	LOT	29 hr
Dec 1, 3:13 AM CST	Lakeshore Flood Warning	LOT	39 hr
Dec 24, 1:36 AM CST	Freezing Fog Advisory	LOT	8 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	23
Tornado Warning	2
Severe Thunderstorm Watch	4
Tornado Watch	3
Mesoscale Discussion	18
Special Weather Statement	11
Flooding
Areal Flood Warning	2
Flash Flood Warning	5
River Flood Warning	13
Flash Flood Watch	6
River Flood Watch	4
Areal Flood Advisory	11
River Flood Advisory	7
Winter
Ice Storm Warning	1
Winter Storm Warning	2
Winter Storm Watch	1
Winter Weather Advisory	10
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Cold
Wind Chill Warning	1
Wind Chill Watch	1
Frost Advisory	2
Wind Chill Advisory	2
Wind and dust
High Wind Warning	2
High Wind Watch	2
Wind Advisory	8
Fog and smoke
Dense Fog Advisory	7
Freezing Fog Advisory	1
Coast and beach
Lakeshore Flood Warning	3
Lakeshore Flood Watch	1
Lakeshore Flood Advisory	10
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 2018 2020

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.