Weather alerts in Boone County, Illinois

3,161 weather alerts since 1986, 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 since 1986. Tap one for its archive.

Alerts: 3,161
Warnings: 716
Watches: 582
Advisories: 928
Busiest year: 2008199 alerts
Average year: 77over 41 years on file

Over time

By year

Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.

By month of the year

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	358
Tornado Warning	44
Severe Thunderstorm Watch	269
Tornado Watch	93
Mesoscale Discussion	751
Special Weather Statement	184
Flooding
Areal Flood Warning	31
Flash Flood Warning	84
River Flood Warning	29
Flash Flood Watch	63
Flood Watch	40
River Flood Watch	9
Areal Flood Advisory	114
River Flood Advisory	77
Winter
Blizzard Warning	8
Ice Storm Warning	4
Snow Squall Warning	2
Winter Storm Warning	52
Blizzard Watch	3
Winter Storm Watch	59
Blowing Snow Advisory	1
Freezing Rain Advisory	16
Snow Advisory	17
Snow and Blowing Snow Advisory	3
Winter Weather Advisory	159
Heat
Excessive Heat Warning	7
Extreme Heat Warning	2
Excessive Heat Watch	7
Extreme Heat Watch	1
Heat Advisory	40
Cold
Extreme Cold Warning	2
Freeze Warning	45
Wind Chill Warning	13
Extreme Cold Watch	1
Freeze Watch	15
Wind Chill Watch	6
Cold Weather Advisory	9
Frost Advisory	68
Wind Chill Advisory	75
Wind and dust
High Wind Warning	16
High Wind Watch	7
Blowing Dust Advisory	1
Wind Advisory	118
Fire
Red Flag Warning	19
Fire Weather Watch	9
Fog and smoke
Dense Fog Advisory	224
Freezing Fog Advisory	6

The latest warnings

The most recent on file, newest first.

Issued	Product	Office	Lasted
Aug 21, 3:45 PM CDT	Severe Thunderstorm Warning	LOT	22 min
Aug 21, 2:17 PM CDT	Severe Thunderstorm Warning	LOT	43 min
Aug 11, 9:22 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	53 min
Aug 11, 3:11 AM CDT	Severe Thunderstorm Warning	LOT	51 min
Jul 27, 2:10 AM CDT	Extreme Heat Warning	LOT	19 hr
Jul 3, 7:33 PM CDT	Severe Thunderstorm Warning	LOT	30 min
Jul 3, 7:06 PM CDT	Severe Thunderstorm Warning	LOT	39 min
Jul 3, 11:14 AM CDT	Severe Thunderstorm Warning	LOT	61 min
Jun 28, 11:18 AM CDT	Extreme Heat Warning	LOT	5 days
Jun 24, 4:54 PM CDT	Severe Thunderstorm Warning	LOT	51 min
Jun 17, 8:31 PM CDT	Severe Thunderstorm Warning	LOT	44 min
Jun 11, 5:52 PM CDT	Flash Flood Warning	LOT	3 hr

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive

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.