Lightning strikes in Illinois by county

The detection network has located 231,363 lightning strikes in Illinois since the archive began, including 213,489 in the last 7 days. The table counts every strike the network placed inside a county boundary. Another 11,281 strikes fell inside Illinois but outside every county polygon, mostly over coastal or lake water.

#CountyStrikesLast 7 daysShare
1LaSalle County13,00612,9925.6%
2Livingston County12,23712,0615.3%
3Iroquois County12,22611,6685.3%
4Peoria County10,53310,5194.6%
5Vermilion County9,2899,2824.0%
6Knox County9,1949,1784.0%
7McLean County8,8158,6053.8%
8Cook County7,9907,8723.5%
9Champaign County7,7267,6913.3%
10Lee County7,4447,3503.2%
11Tazewell County6,4016,1472.8%
12Mercer County6,2086,1842.7%
13Will County5,7905,4432.5%
14Fulton County5,2815,2172.3%
15Warren County4,7634,7322.1%
16Grundy County4,6374,6312.0%
17Ford County4,5664,4982.0%
18Kane County4,1794,1561.8%
19Lake County3,9123,9011.7%
20Kankakee County3,8553,6851.7%
21DuPage County3,6133,5981.6%
22McHenry County3,0152,9431.3%
23Randolph County2,8501,8851.2%
24Henry County2,7912,7391.2%
25Woodford County2,5282,4511.1%
26Henderson County2,2922,2851.0%
27DeKalb County2,2542,2071.0%
28De Witt County2,1202,1020.9%
29Bureau County2,1202,0610.9%
30Edgar County2,1122,0920.9%
31Piatt County1,9031,8470.8%
32Hamilton County1,8321,6740.8%
33Rock Island County1,6701,6390.7%
34Pulaski County1,6447060.7%
35Williamson County1,6376220.7%
36Franklin County1,5561,2330.7%
37Union County1,4351,0570.6%
38St. Clair County1,4297840.6%
39Stark County1,3561,3250.6%
40Whiteside County1,2701,2520.5%
41Douglas County1,2411,2190.5%
42Washington County1,2299580.5%
43Ogle County1,1851,0740.5%
44Massac County1,163440.5%
45Saline County1,0997310.5%
46Alexander County1,0824870.5%
47Monroe County1,0194110.4%
48Putnam County1,0081,0000.4%
49Perry County9968540.4%
50Kendall County9779500.4%
51Jefferson County9763870.4%
52Hancock County9648740.4%
53Jackson County9264060.4%
54Marshall County8458370.4%
55Carroll County8268240.4%
56Boone County8228110.4%
57McDonough County8027970.3%
58White County7917200.3%
59Clark County7115940.3%
60Pope County650110.3%
61Madison County6281900.3%
62Johnson County625400.3%
63Coles County6225020.3%
64Fayette County6061620.3%
65Gallatin County5703670.2%
66Marion County534710.2%
67Jo Daviess County5064610.2%
68Mason County5043600.2%
69Wabash County4444420.2%
70Winnebago County4434350.2%
71Logan County4354210.2%
72Montgomery County4063330.2%
73Clinton County3911660.2%
74Wayne County3621890.2%
75Effingham County31360.1%
76Crawford County3091750.1%
77Hardin County305410.1%
78Macon County2611310.1%
79Shelby County2481760.1%
80Adams County2421060.1%
81Macoupin County2361650.1%
82Clay County21900.1%
83Stephenson County2082030.1%
84Schuyler County1901190.1%
85Jersey County166530.1%
86Cumberland County164440.1%
87Jasper County15940.1%
88Pike County155410.1%
89Calhoun County146460.1%
90Christian County125820.1%
91Moultrie County125370.1%
92Richland County98380.0%
93Greene County9070.0%
94Edwards County82660.0%
95Bond County73420.0%
96Brown County65350.0%
97Cass County61590.0%
98Morgan County61570.0%
99Menard County41380.0%
100Sangamon County35140.0%
101Lawrence County35350.0%
102Scott County330.0%

Strike positions carry the network's mean location error of about 5.6 km, so strikes near a county line can be filed one county over. Method and caveats are on the data hub; the full state table is on the United States page.

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