Weather alerts in DeKalb County, Illinois

3,510 weather alerts since 1986, 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 since 1986. Tap one for its archive.

Alerts: 3,510
Warnings: 925
Watches: 603
Advisories: 976
Busiest year: 2008206 alerts
Average year: 88over 40 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	536
Tornado Warning	64
Severe Thunderstorm Watch	278
Tornado Watch	102
Mesoscale Discussion	820
Special Weather Statement	186
Flooding
Areal Flood Warning	45
Flash Flood Warning	92
River Flood Warning	12
Flash Flood Watch	70
Flood Watch	47
River Flood Watch	2
Areal Flood Advisory	178
River Flood Advisory	18
Winter
Blizzard Warning	7
Heavy Snow Warning	2
Ice Storm Warning	5
Snow Squall Warning	3
Winter Storm Warning	48
Blizzard Watch	3
Winter Storm Watch	51
Blowing Snow Advisory	2
Freezing Rain Advisory	16
Snow Advisory	17
Snow and Blowing Snow Advisory	2
Winter Weather Advisory	167
Heat
Excessive Heat Warning	8
Extreme Heat Warning	2
Excessive Heat Watch	8
Extreme Heat Watch	1
Heat Advisory	44
Cold
Extreme Cold Warning	2
Freeze Warning	45
Wind Chill Warning	14
Extreme Cold Watch	1
Freeze Watch	15
Wind Chill Watch	6
Cold Weather Advisory	9
Frost Advisory	66
Wind Chill Advisory	77
Wind and dust
Dust Storm Warning	2
High Wind Warning	16
High Wind Watch	7
Blowing Dust Advisory	1
Dust Storm Advisory	2
Wind Advisory	123
Fire
Red Flag Warning	22
Fire Weather Watch	12
Fog and smoke
Dense Fog Advisory	244
Freezing Fog Advisory	10

The latest warnings

The most recent on file, newest first.

Issued	Product	Office	Lasted
Sep 20, 2:12 AM CDT	Flash Flood Warning	LOT	5 hr
Sep 17, 7:07 AM CDT	Flash Flood Warning	LOT	2 hr
Aug 21, 5:44 PM CDT	Severe Thunderstorm Warning	LOT	46 min
Aug 21, 4:55 PM CDT	Severe Thunderstorm Warning	LOT	40 min
Aug 21, 2:57 PM CDT	Severe Thunderstorm Warning	LOT	63 min
Aug 21, 2:17 PM CDT	Severe Thunderstorm Warning	LOT	43 min
Aug 12, 8:31 AM CDT	Severe Thunderstorm Warning	LOT	57 min
Aug 11, 9:22 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	53 min
Jul 27, 2:10 AM CDT	Extreme Heat Warning	LOT	19 hr
Jul 4, 6:48 PM CDT	Areal Flood Warning	LOT	14 hr
Jul 4, 6:48 PM CDT	Areal Flood Warning	LOT	14 hr
Jul 4, 5:04 PM CDT	Areal Flood Warning	LOT	2 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.