Weather alerts in Illinois, 2004
1,618 weather alerts in 2004, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 2004. Tap one for its archive.
- Alerts
- 1,618
- Warnings
- 1,247
- Watches
- 107
- Advisories
- 0
- Busiest month
- May704 alerts
- Busiest day
- May 30, 2004124 alerts
Over time
By month
The alerts
1,618 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.
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 | 733 |
| Tornado Warning | 225 |
| Severe Thunderstorm Watch | 66 |
| Tornado Watch | 41 |
| Mesoscale Discussion | 264 |
| Flooding | |
| Flash Flood Warning | 170 |
| Marine | |
| Special Marine Warning | 119 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Will County127
- LaSalle County122
- Grundy County120
- Kendall County119
- Cook County113
- Kane County109
- Iroquois County108
- Livingston County108
- Kankakee County107
- Bureau County106
- McLean County105
- DeKalb County104
- Tazewell County102
- DuPage County101
- Lee County101
- Woodford County101
- Saint Clair County100
- Champaign County99
- Ford County99
- Marshall County99
- Peoria County99
- Vermilion County98
- Knox County98
- Putnam County97
- Stark County96
- Henry County94
- Whiteside County93
- DeWitt County92
- Monroe County92
- Rock Island County92
- Ogle County91
- Saline County91
- Fulton County91
- Piatt County90
- Gallatin County90
- Logan County89
- Carroll County87
- White County87
- Madison County86
- Hamilton County86
62 more counties
- Coles County85
- Montgomery County85
- Mercer County85
- Jo Daviess County84
- Jefferson County84
- Lake County83
- Warren County83
- Calhoun County82
- Randolph County82
- Jasper County82
- Lawrence County82
- Wayne County82
- Macon County81
- Clay County81
- Wabash County81
- Macoupin County80
- Shelby County80
- McHenry County80
- Washington County80
- Greene County79
- Winnebago County78
- Franklin County78
- Richland County78
- Henderson County78
- Christian County77
- Jersey County77
- Menard County77
- Sangamon County77
- Williamson County77
- Edwards County77
- Marion County77
- Mason County77
- Douglas County76
- Moultrie County76
- Johnson County76
- Crawford County76
- Effingham County76
- Stephenson County75
- Perry County75
- Bond County75
- Clinton County75
- Fayette County75
- Edgar County74
- Morgan County74
- Jackson County74
- Cass County73
- Pike County73
- Boone County73
- Pope County73
- Scott County71
- Cumberland County71
- McDonough County70
- Union County69
- Schuyler County69
- Brown County68
- Hardin County68
- Clark County67
- Pulaski County64
- Alexander County61
- Adams County61
- Hancock County61
- Massac County58
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20032005
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.