Alert archive / Illinois / DeKalb County

Weather alerts in DeKalb County, Illinois, 2021

117 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

DeKalb County and its neighbors

Each county as a circle sized by its count in 2021. Tap one for its archive.

Alerts: 117
Warnings: 27
Watches: 17
Advisories: 38
Busiest month: August32 alerts
Busiest day: August 9, 202112 alerts

Over time

By month

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 2, 3:04 PM CST	Dense Fog Advisory	LOT	20 hr
Jan 3, 3:37 PM CST	Dense Fog Advisory	LOT	29 hr
Jan 5, 3:18 PM CST	Dense Fog Advisory	LOT	19 hr
Jan 24, 3:05 AM CST	Winter Storm Watch	LOT	12 hr
Jan 24, 2:55 PM CST	Winter Storm Warning	LOT	48 hr
Jan 29, 3:23 AM CST	Winter Storm Watch	LOT	24 hr
Jan 29, 2:38 PM CST	Winter Storm Warning	LOT	51 hr
Jan 30, 3:27 AM CST	Winter Weather Advisory	LOT	39 hr
Jan 30, 6:23 PM CST	Mesoscale Discussion	SPC	4 hr
Feb 3, 5:47 AM CST	Dense Fog Advisory	LOT	5 hr
Feb 3, 2:29 PM CST	Winter Weather Advisory	LOT	46 hr
Feb 5, 2:24 PM CST	Winter Weather Advisory	LOT	31 hr
Feb 6, 3:34 AM CST	Wind Chill Advisory	LOT	32 hr
Feb 8, 11:13 AM CST	Winter Weather Advisory	LOT	16 hr
Feb 8, 3:10 PM CST	Wind Chill Advisory	LOT	19 hr
Feb 13, 3:33 AM CST	Wind Chill Warning	LOT	31 hr
Feb 13, 3:33 AM CST	Wind Chill Advisory	LOT	56 hr
Feb 14, 2:19 PM CST	Winter Weather Advisory	LOT	43 hr
Feb 27, 5:30 AM CST	Dense Fog Advisory	LOT	6 hr
Feb 28, 6:29 AM CST	Dense Fog Advisory	LOT	6 hr
Mar 10, 3:25 AM CST	Wind Advisory	LOT	23 hr
Mar 15, 2:58 AM CDT	Winter Weather Advisory	LOT	16 hr
Mar 17, 2:35 PM CDT	Wind Advisory	LOT	28 hr
Apr 19, 3:45 AM CDT	Freeze Watch	LOT	11 hr
Apr 19, 2:58 PM CDT	Freeze Warning	LOT	42 hr
Apr 21, 3:22 AM CDT	Freeze Warning	LOT	29 hr
Apr 29, 6:01 PM CDT	Special Weather Statement	LOT	59 min
Apr 30, 2:50 PM CDT	Wind Advisory	LOT	28 hr
May 3, 5:32 PM CDT	Special Weather Statement	LOT	58 min
May 7, 2:07 PM CDT	Frost Advisory	LOT	18 hr
May 10, 2:23 PM CDT	Frost Advisory	LOT	18 hr
May 11, 2:11 PM CDT	Frost Advisory	LOT	17 hr
May 12, 2:41 PM CDT	Frost Advisory	LOT	16 hr
Jun 7, 4:24 PM CDT	Special Weather Statement	LOT	36 min
Jun 11, 1:07 PM CDT	Special Weather Statement	LOT	113 min
Jun 11, 3:36 PM CDT	Severe Thunderstorm Warning	LOT	54 min
Jun 11, 4:17 PM CDT	Areal Flood Advisory	LOT	110 min
Jun 12, 1:23 PM CDT	Special Weather Statement	LOT	112 min
Jun 12, 1:26 PM CDT	Mesoscale Discussion	SPC	3 hr
Jun 20, 8:10 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 20, 9:54 PM CDT	Mesoscale Discussion	SPC	66 min
Jun 20, 10:12 PM CDT	Severe Thunderstorm Warning	LOT	33 min
Jun 20, 10:50 PM CDT	Severe Thunderstorm Warning	LOT	55 min
Jun 24, 2:19 PM CDT	Flash Flood Watch	LOT	54 hr
Jun 28, 3:01 AM CDT	Flash Flood Watch	LOT	40 hr
Jul 7, 2:02 PM CDT	Mesoscale Discussion	SPC	88 min
Jul 14, 2:01 PM CDT	Mesoscale Discussion	SPC	119 min
Jul 14, 11:17 PM CDT	Mesoscale Discussion	SPC	58 min
Jul 14, 11:57 PM CDT	Severe Thunderstorm Watch	SPC	3 hr
Jul 15, 1:01 AM CDT	Severe Thunderstorm Warning	LOT	33 min
Jul 15, 2:14 AM CDT	Mesoscale Discussion	SPC	61 min
Jul 24, 3:00 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 24, 3:32 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 28, 4:52 AM CDT	Special Weather Statement	LOT	38 min
Jul 29, 12:32 AM CDT	Mesoscale Discussion	SPC	88 min
Jul 29, 1:00 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 29, 1:34 AM CDT	Mesoscale Discussion	SPC	86 min
Jul 29, 2:14 AM CDT	Severe Thunderstorm Warning	LOT	76 min
Jul 29, 3:04 AM CDT	Special Weather Statement	LOT	56 min
Jul 29, 3:18 AM CDT	Mesoscale Discussion	SPC	87 min
Aug 6, 3:23 PM CDT	Mesoscale Discussion	SPC	97 min
Aug 9, 11:49 AM CDT	Areal Flood Advisory	LOT	3 hr
Aug 9, 12:18 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 9, 2:43 PM CDT	Tornado Watch	SPC	9 hr
Aug 9, 2:46 PM CDT	Heat Advisory	LOT	28 hr
Aug 9, 3:14 PM CDT	Severe Thunderstorm Warning	LOT	61 min
Aug 9, 4:34 PM CDT	Tornado Warning Tornado observed	LOT	41 min
Aug 9, 4:39 PM CDT	Tornado Warning	LOT	51 min
Aug 9, 5:15 PM CDT	Tornado Warning	LOT	60 min
Aug 9, 5:32 PM CDT	Tornado Warning Tornado observed	LOT	43 min
Aug 9, 5:53 PM CDT	Mesoscale Discussion	SPC	67 min
Aug 9, 6:00 PM CDT	Tornado Warning	LOT	26 min
Aug 9, 6:09 PM CDT	Tornado Warning	LOT	51 min
Aug 10, 3:07 PM CDT	Heat Advisory	LOT	28 hr
Aug 10, 3:10 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 3:47 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 10, 5:51 PM CDT	Mesoscale Discussion	SPC	84 min
Aug 10, 6:10 PM CDT	Severe Thunderstorm Warning	LOT	65 min
Aug 10, 6:16 PM CDT	Severe Thunderstorm Warning	LOT	74 min
Aug 10, 7:13 PM CDT	Severe Thunderstorm Warning	LOT	47 min
Aug 11, 8:34 AM CDT	Mesoscale Discussion	SPC	86 min
Aug 11, 8:41 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	49 min
Aug 11, 8:52 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
Aug 11, 9:35 AM CDT	Severe Thunderstorm Warning	LOT	42 min
Aug 11, 7:35 PM CDT	Mesoscale Discussion	SPC	85 min
Aug 11, 8:22 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 11, 11:06 PM CDT	Mesoscale Discussion	SPC	84 min
Aug 24, 3:19 AM CDT	Heat Advisory	LOT	17 hr
Aug 24, 3:55 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 24, 5:10 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 24, 6:09 PM CDT	Severe Thunderstorm Warning	LOT	66 min
Aug 29, 1:18 PM CDT	Mesoscale Discussion	SPC	87 min
Sep 7, 12:25 PM CDT	Mesoscale Discussion	SPC	65 min
Sep 7, 1:12 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 7, 1:13 PM CDT	Special Weather Statement	LOT	32 min
Sep 7, 1:23 PM CDT	Severe Thunderstorm Warning	LOT	67 min
Sep 20, 11:44 PM CDT	Special Weather Statement	LOT	31 min
Oct 8, 5:52 AM CDT	Dense Fog Advisory	LOT	3 hr
Oct 8, 9:45 PM CDT	Dense Fog Advisory	LOT	6 hr
Oct 11, 12:37 PM CDT	Mesoscale Discussion	SPC	113 min
Oct 11, 3:10 PM CDT	Tornado Watch	SPC	6 hr
Oct 11, 6:09 PM CDT	Mesoscale Discussion	SPC	96 min
Oct 11, 6:44 PM CDT	Severe Thunderstorm Warning	LOT	61 min
Oct 13, 12:21 AM CDT	Dense Fog Advisory	LOT	8 hr
Oct 22, 1:29 PM CDT	Frost Advisory	LOT	19 hr
Oct 24, 3:10 AM CDT	Wind Advisory	LOT	36 hr
Oct 31, 2:37 AM CDT	Freeze Warning	LOT	30 hr
Nov 27, 8:13 AM CST	Winter Weather Advisory	LOT	3 hr
Dec 3, 10:49 PM CST	Dense Fog Advisory	LOT	3 hr
Dec 5, 1:54 PM CST	Wind Advisory	LOT	22 hr
Dec 10, 2:56 AM CST	Wind Advisory	LOT	36 hr
Dec 14, 3:19 AM CST	High Wind Watch	LOT	24 hr
Dec 15, 3:09 AM CST	High Wind Warning	LOT	30 hr
Dec 27, 1:41 AM CST	Special Weather Statement	LOT	34 min
Dec 27, 8:11 AM CST	Dense Fog Advisory	LOT	4 hr
Dec 27, 2:03 PM CST	Winter Weather Advisory	LOT	28 hr
Dec 28, 8:59 AM CST	Mesoscale Discussion	SPC	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	14
Tornado Warning	6
Severe Thunderstorm Watch	9
Tornado Watch	2
Mesoscale Discussion	25
Special Weather Statement	10
Flooding
Flash Flood Watch	2
Areal Flood Advisory	2
Winter
Winter Storm Warning	2
Winter Storm Watch	2
Winter Weather Advisory	8
Heat
Heat Advisory	3
Cold
Freeze Warning	3
Wind Chill Warning	1
Freeze Watch	1
Frost Advisory	5
Wind Chill Advisory	3
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	6
Fog and smoke
Dense Fog Advisory	11

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2020 2022

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. Rebuilt daily.