Weather alerts in Boone County, Illinois, 2020

111 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Boone County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts: 111
Warnings: 19
Watches: 13
Advisories: 42
Busiest month: August17 alerts
Busiest day: August 10, 20209 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 9, 1:36 PM CST	Winter Storm Watch	LOT	22 hr
Jan 10, 4:03 AM CST	Winter Storm Warning	LOT	44 hr
Jan 12, 7:37 PM CST	Winter Weather Advisory	LOT	7 hr
Jan 14, 2:33 PM CST	Winter Weather Advisory	LOT	21 hr
Jan 16, 2:44 PM CST	Winter Weather Advisory	LOT	51 hr
Jan 18, 2:24 PM CST	Wind Chill Advisory	LOT	20 hr
Jan 24, 3:12 AM CST	Winter Weather Advisory	LOT	35 hr
Jan 24, 8:34 AM CST	Dense Fog Advisory	LOT	11 hr
Feb 8, 1:38 PM CST	Winter Weather Advisory	LOT	26 hr
Feb 11, 2:38 PM CST	Winter Weather Advisory	LOT	52 hr
Feb 13, 1:29 AM CST	Special Weather Statement	LOT	61 min
Feb 13, 2:07 PM CST	Wind Chill Advisory	LOT	20 hr
Feb 17, 8:24 PM CST	Dense Fog Advisory	LOT	6 hr
Feb 23, 2:11 PM CST	Winter Storm Watch	LOT	48 hr
Mar 5, 2:10 PM CST	Wind Advisory	LOT	22 hr
Mar 10, 10:30 AM CDT	River Flood Advisory	LOT	39 hr
Mar 19, 6:41 AM CDT	Dense Fog Advisory	LOT	3 hr
Mar 23, 5:21 AM CDT	Dense Fog Advisory	LOT	5 hr
Mar 28, 2:39 AM CDT	River Flood Advisory	LOT	8 hr
Mar 28, 10:49 AM CDT	River Flood Warning	LOT	40 hr
Mar 28, 2:43 PM CDT	Wind Advisory	LOT	29 hr
Mar 28, 7:01 PM CDT	Severe Thunderstorm Warning	LOT	29 min
Apr 6, 11:03 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 7, 3:06 PM CDT	Mesoscale Discussion	SPC	114 min
Apr 7, 5:07 PM CDT	Mesoscale Discussion	SPC	83 min
Apr 7, 5:26 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 7, 7:01 PM CDT	Severe Thunderstorm Warning	LOT	59 min
Apr 7, 7:22 PM CDT	Mesoscale Discussion	SPC	83 min
Apr 8, 4:16 AM CDT	Dense Fog Advisory	LOT	5 hr
Apr 9, 3:18 AM CDT	Wind Advisory	LOT	16 hr
Apr 12, 3:57 AM CDT	Wind Advisory	LOT	36 hr
Apr 15, 5:22 AM CDT	Winter Weather Advisory	LOT	5 hr
Apr 20, 6:00 PM CDT	Special Weather Statement	LOT	60 min
Apr 29, 3:55 AM CDT	Flood Watch	LOT	26 hr
Apr 29, 11:09 AM CDT	River Flood Advisory	LOT	4 days
May 7, 3:33 AM CDT	Freeze Watch	LOT	24 hr
May 8, 3:56 AM CDT	Freeze Warning	LOT	27 hr
May 11, 2:45 PM CDT	Frost Advisory	LOT	17 hr
May 14, 8:53 PM CDT	River Flood Advisory	LOT	64 hr
May 14, 10:47 PM CDT	Areal Flood Advisory	LOT	4 hr
May 17, 12:44 PM CDT	River Flood Warning	LOT	4 days
May 17, 2:04 PM CDT	Areal Flood Advisory	LOT	6 hr
May 23, 12:33 PM CDT	Tornado Watch	SPC	8 hr
May 23, 2:51 PM CDT	Mesoscale Discussion	SPC	84 min
May 23, 3:09 PM CDT	Severe Thunderstorm Warning	LOT	66 min
May 23, 6:04 PM CDT	Severe Thunderstorm Warning	LOT	56 min
May 23, 6:48 PM CDT	Areal Flood Advisory	LOT	3 hr
May 23, 9:20 PM CDT	River Flood Advisory	LOT	64 hr
May 25, 9:16 AM CDT	River Flood Advisory	LOT	48 hr
Jun 5, 12:26 PM CDT	Mesoscale Discussion	SPC	94 min
Jun 9, 2:33 AM CDT	Wind Advisory	LOT	21 hr
Jun 9, 6:20 PM CDT	Mesoscale Discussion	SPC	115 min
Jun 26, 5:43 AM CDT	Special Weather Statement	LOT	47 min
Jun 26, 8:34 AM CDT	Special Weather Statement	LOT	26 min
Jun 26, 12:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 26, 1:38 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 26, 2:22 PM CDT	Special Weather Statement	LOT	23 min
Jun 26, 3:39 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 29, 3:33 PM CDT	Areal Flood Advisory	LOT	3 hr
Jun 29, 4:23 PM CDT	Flash Flood Warning	LOT	4 hr
Jul 7, 6:59 PM CDT	Special Weather Statement	LOT	31 min
Jul 7, 7:30 PM CDT	Special Weather Statement	LOT	45 min
Jul 8, 2:18 PM CDT	Special Weather Statement	LOT	27 min
Jul 9, 2:51 PM CDT	Mesoscale Discussion	SPC	114 min
Jul 9, 3:39 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 9, 5:39 PM CDT	Mesoscale Discussion	SPC	96 min
Jul 9, 6:11 PM CDT	Special Weather Statement	LOT	64 min
Jul 9, 8:10 PM CDT	Special Weather Statement	LOT	65 min
Jul 11, 3:58 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 17, 3:36 AM CDT	Heat Advisory	LOT	40 hr
Jul 18, 11:00 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 26, 5:33 PM CDT	Mesoscale Discussion	SPC	87 min
Aug 9, 1:30 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 9, 6:26 PM CDT	Special Weather Statement	LOT	64 min
Aug 10, 10:42 AM CDT	Mesoscale Discussion	SPC	93 min
Aug 10, 11:26 AM CDT	Severe Thunderstorm Watch PDS	SPC	7 hr
Aug 10, 1:36 PM CDT	Mesoscale Discussion	SPC	114 min
Aug 10, 2:03 PM CDT	Severe Thunderstorm Warning	LOT	87 min
Aug 10, 2:43 PM CDT	Tornado Warning	LOT	62 min
Aug 10, 2:55 PM CDT	Tornado Warning	LOT	34 min
Aug 10, 3:21 PM CDT	Areal Flood Advisory	LOT	3 hr
Aug 10, 3:36 PM CDT	Mesoscale Discussion	SPC	84 min
Aug 10, 4:23 PM CDT	High Wind Warning	LOT	90 min
Aug 24, 10:55 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 25, 1:20 AM CDT	Severe Thunderstorm Warning	LOT	30 min
Aug 25, 2:57 AM CDT	Special Weather Statement	LOT	48 min
Aug 25, 3:09 AM CDT	Severe Thunderstorm Warning	LOT	51 min
Aug 25, 3:32 PM CDT	Flash Flood Warning Considerable damage threat	LOT	3 min
Aug 28, 5:29 PM CDT	Mesoscale Discussion	SPC	91 min
Sep 6, 9:32 PM CDT	Mesoscale Discussion	SPC	118 min
Oct 1, 3:25 AM CDT	Frost Advisory	LOT	30 hr
Oct 4, 3:46 AM CDT	Frost Advisory	LOT	28 hr
Oct 14, 3:33 AM CDT	Wind Advisory	LOT	15 hr
Oct 14, 7:41 PM CDT	Freeze Watch	LOT	7 hr
Oct 15, 2:35 AM CDT	Freeze Warning	LOT	30 hr
Oct 16, 2:40 PM CDT	Wind Advisory	LOT	28 hr
Oct 31, 10:44 AM CDT	Wind Advisory	LOT	30 hr
Nov 10, 2:58 AM CST	Wind Advisory	LOT	24 hr
Nov 10, 1:28 PM CST	Mesoscale Discussion	SPC	92 min
Nov 10, 2:05 PM CST	Tornado Watch	SPC	6 hr
Nov 10, 3:20 PM CST	Severe Thunderstorm Warning	LOT	70 min
Nov 10, 3:30 PM CST	Mesoscale Discussion	SPC	2 hr
Nov 14, 3:04 AM CST	Wind Advisory	LOT	41 hr
Nov 14, 10:25 PM CST	Special Weather Statement	LOT	35 min
Nov 23, 2:24 PM CST	Winter Weather Advisory	LOT	19 hr
Dec 11, 8:39 PM CST	Winter Weather Advisory	LOT	17 hr
Dec 23, 2:32 AM CST	Wind Advisory	LOT	25 hr
Dec 28, 3:31 AM CST	Winter Storm Watch	LOT	12 hr
Dec 28, 3:04 PM CST	Winter Storm Warning	LOT	42 hr
Dec 29, 2:17 PM CST	Mesoscale Discussion	SPC	4 hr
Dec 30, 1:15 AM CST	Mesoscale Discussion	SPC	6 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	8
Tornado Warning	2
Severe Thunderstorm Watch	5
Tornado Watch	2
Mesoscale Discussion	24
Special Weather Statement	13
Flooding
Flash Flood Warning	2
River Flood Warning	2
Flood Watch	1
Areal Flood Advisory	5
River Flood Advisory	6
Winter
Winter Storm Warning	2
Winter Storm Watch	3
Winter Weather Advisory	9
Heat
Heat Advisory	1
Cold
Freeze Warning	2
Freeze Watch	2
Frost Advisory	3
Wind Chill Advisory	2
Wind and dust
High Wind Warning	1
Wind Advisory	11
Fog and smoke
Dense Fog Advisory	5

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2019 2021

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.