Alert archive / Illinois / 2021
Weather alerts in Illinois, August 2021
436 weather alerts in August 2021, 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 August 2021. Tap one for its archive.
- Alerts
- 436
- Warnings
- 169
- Watches
- 14
- Advisories
- 81
- Busiest day
- August 12, 202180 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 1:03 AM CDT | Dense Fog Advisory | ILX | Cass, Christian, DeWitt, Fulton, Logan, McLean and 13 more | 7 hr |
| Aug 1, 1:58 AM CDT | Dense Fog Advisory | LSX | Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 2 more | 6 hr |
| Aug 6, 2:55 PM CDT | Special Weather Statement | LOT | Grundy | 65 min |
| Aug 6, 3:23 PM CDT | Mesoscale Discussion | SPC | Boone, Champaign, Cook, DeKalb, DeWitt, DuPage and 20 more | 97 min |
| Aug 6, 4:06 PM CDT | Special Weather Statement | LOT | Cook | 39 min |
| Aug 6, 7:56 PM CDT | Special Marine Warning | LOT | 94 min | |
| Aug 6, 8:27 PM CDT | Special Marine Warning | LOT | 2 hr | |
| Aug 6, 8:49 PM CDT | Special Weather Statement | LOT | Lake | 56 min |
| Aug 8, 11:40 AM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 18 more | 3 hr |
| Aug 8, 12:44 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 7 hr |
| Aug 8, 2:14 PM CDT | Small Craft Advisory | LOT | 8 hr | |
| Aug 8, 2:21 PM CDT | Special Weather Statement | ILX | McLean | 24 min |
| Aug 8, 2:24 PM CDT | Heat Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 53 hr |
| Aug 8, 2:37 PM CDT | Heat Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 4 days |
| Aug 8, 2:41 PM CDT | Heat Advisory | PAH | Alexander, Jackson, Johnson, Massac, Perry, Pulaski and 2 more | 23 hr |
| Aug 8, 2:54 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 50 min |
| Aug 8, 3:00 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 36 more | 2 hr |
| Aug 8, 3:08 PM CDT | Special Weather Statement | LOT | Kane | 37 min |
| Aug 8, 3:30 PM CDT | Special Weather Statement | ILX | McLean | 30 min |
| Aug 8, 3:45 PM CDT | Special Weather Statement | LOT | Grundy | 30 min |
| Aug 8, 3:54 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey | 66 min |
| Aug 8, 4:07 PM CDT | Special Weather Statement | LOT | Lake | 38 min |
| Aug 8, 4:19 PM CDT | Special Marine Warning | LOT | 37 min | |
| Aug 8, 4:29 PM CDT | Special Weather Statement | ILX | Morgan | 31 min |
| Aug 8, 4:35 PM CDT | Areal Flood Advisory | LSX | Adams, Pike | 3 hr |
| Aug 8, 4:45 PM CDT | Areal Flood Advisory | ILX | McLean | 2 hr |
| Aug 8, 4:50 PM CDT | Special Weather Statement | LOT | Will | 40 min |
| Aug 8, 4:54 PM CDT | Special Weather Statement | ILX | Menard | 36 min |
| Aug 8, 5:02 PM CDT | Special Weather Statement | ILX | Woodford | 28 min |
| Aug 8, 5:05 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Mason, Menard | 25 min |
| Aug 8, 5:09 PM CDT | Special Weather Statement | LOT | Kendall | 36 min |
| Aug 8, 5:14 PM CDT | Severe Thunderstorm Warning | ILX | McLean, Tazewell, Woodford | 46 min |
| Aug 8, 5:29 PM CDT | Special Weather Statement | ILX | Sangamon | 31 min |
| Aug 8, 5:35 PM CDT | Flash Flood Warning | ILX | McLean | 3 hr |
| Aug 8, 5:46 PM CDT | Special Weather Statement | ILX | Sangamon | 29 min |
| Aug 8, 5:47 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Champaign, Christian, Clay, Clinton and 27 more | 88 min |
| Aug 8, 5:58 PM CDT | Special Weather Statement | LOT | DuPage | 32 min |
| Aug 8, 6:20 PM CDT | Special Weather Statement | LOT | Lake | 25 min |
| Aug 8, 6:25 PM CDT | Special Marine Warning | LOT | 65 min | |
| Aug 8, 6:29 PM CDT | Areal Flood Advisory | LOT | Livingston | 3 hr |
| Aug 8, 7:20 PM CDT | Areal Flood Advisory | ILX | McLean | 115 min |
| Aug 9, 2:26 AM CDT | Areal Flood Advisory | ILX | Clay | 3 hr |
| Aug 9, 2:29 AM CDT | Areal Flood Advisory | LSX | Fayette, Marion | 5 hr |
| Aug 9, 4:56 AM CDT | Flash Flood Warning | PAH | Wayne | 3 hr |
| Aug 9, 4:59 AM CDT | Special Weather Statement | DVN | Stephenson | 31 min |
| Aug 9, 5:28 AM CDT | Flash Flood Warning | PAH | Edwards, Wabash | 3 hr |
| Aug 9, 6:28 AM CDT | Areal Flood Advisory | ILX | Christian, Macon, Moultrie, Shelby | 3 hr |
| Aug 9, 6:52 AM CDT | Special Weather Statement | LOT | Winnebago | 23 min |
| Aug 9, 7:07 AM CDT | Areal Flood Advisory | ILX | Logan, Menard, Sangamon | 3 hr |
| Aug 9, 7:08 AM CDT | Special Weather Statement | DVN | Stephenson | 22 min |
| Aug 9, 7:38 AM CDT | Special Weather Statement | DVN | Stephenson | 22 min |
| Aug 9, 8:19 AM CDT | Flash Flood Warning | PAH | Edwards, Wayne | 2 hr |
| Aug 9, 10:50 AM CDT | Areal Flood Advisory | ILX | Clay, Crawford, Effingham, Jasper | 2 hr |
| Aug 9, 11:49 AM CDT | Areal Flood Advisory | LOT | Boone, DeKalb, Kane, McHenry, Ogle, Winnebago | 3 hr |
| Aug 9, 12:18 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Grundy and 10 more | 2 hr |
| Aug 9, 1:53 PM CDT | Heat Advisory | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 3 days |
| Aug 9, 1:54 PM CDT | Heat Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 29 hr |
| Aug 9, 2:43 PM CDT | Tornado Watch | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Grundy and 11 more | 9 hr |
| Aug 9, 2:46 PM CDT | Heat Advisory | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 28 hr |
| Aug 9, 3:07 PM CDT | River Flood Warning | ILX | Clay, Richland | 6 days |
| Aug 9, 3:14 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Ogle, Winnebago | 61 min |
| Aug 9, 3:25 PM CDT | Areal Flood Advisory | LOT | Boone, Winnebago | 3 hr |
| Aug 9, 3:46 PM CDT | Tornado Warning | LOT | Boone, Winnebago | 26 min |
| Aug 9, 4:12 PM CDT | Areal Flood Advisory | LOT | Boone, McHenry | 3 hr |
| Aug 9, 4:34 PM CDT | Tornado Warning | LOT | DeKalb | 41 min |
| Aug 9, 4:39 PM CDT | Tornado Warning | LOT | DeKalb, Ogle | 51 min |
| Aug 9, 5:11 PM CDT | Tornado Warning | LOT | Lee | 49 min |
| Aug 9, 5:15 PM CDT | Tornado Warning | LOT | DeKalb, Kane | 60 min |
| Aug 9, 5:32 PM CDT | Tornado Warning | LOT | DeKalb, Ogle | 43 min |
| Aug 9, 5:42 PM CDT | Tornado Warning | LOT | Kane | 48 min |
| Aug 9, 5:53 PM CDT | Mesoscale Discussion | SPC | Bureau, Cook, DeKalb, DuPage, Grundy, Kane and 6 more | 67 min |
| Aug 9, 5:55 PM CDT | Tornado Warning | DVN | Bureau | 50 min |
| Aug 9, 6:00 PM CDT | Tornado Warning | LOT | DeKalb, Lee | 26 min |
| Aug 9, 6:09 PM CDT | Tornado Warning | LOT | DeKalb, Kane | 51 min |
| Aug 9, 6:24 PM CDT | Tornado Warning | LOT | DuPage, Kane | 66 min |
| Aug 9, 6:45 PM CDT | Special Marine Warning | LOT | 90 min | |
| Aug 9, 6:50 PM CDT | Tornado Warning | DVN | Bureau | 25 min |
| Aug 9, 6:50 PM CDT | Tornado Warning | LOT | Kane | 40 min |
| Aug 9, 7:12 PM CDT | Tornado Warning | DVN | Bureau | 48 min |
| Aug 9, 7:18 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 42 min |
| Aug 9, 7:30 PM CDT | Tornado Warning | DVN | Bureau | 45 min |
| Aug 9, 8:02 PM CDT | Flash Flood Warning | DVN | Bureau | 2 hr |
| Aug 9, 8:02 PM CDT | River Flood Warning | ILX | Lawrence | 3 days |
| Aug 9, 8:16 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 29 min |
| Aug 9, 8:21 PM CDT | Special Marine Warning | LOT | 114 min | |
| Aug 9, 8:33 PM CDT | Mesoscale Discussion | SPC | Bureau, Knox, LaSalle, Livingston, Marshall, Peoria and 4 more | 87 min |
| Aug 9, 9:19 PM CDT | Special Weather Statement | LOT | Grundy | 26 min |
| Aug 9, 9:30 PM CDT | Tornado Warning | LOT | Kankakee, Will | 45 min |
| Aug 9, 9:39 PM CDT | Special Weather Statement | DVN | Henry | 36 min |
| Aug 9, 9:54 PM CDT | Special Weather Statement | DVN | Henry | 51 min |
| Aug 9, 10:06 PM CDT | Tornado Warning | LOT | Will | 54 min |
| Aug 9, 10:12 PM CDT | Special Marine Warning | LOT | 2 hr | |
| Aug 9, 10:44 PM CDT | Special Weather Statement | DVN | Mercer | 31 min |
| Aug 10, 3:20 AM CDT | Excessive Heat Warning | LSX | Madison, Saint Clair | 65 hr |
| Aug 10, 7:44 AM CDT | Special Weather Statement | ILX | Coles | 46 min |
| Aug 10, 10:45 AM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Clinton, Greene and 9 more | 3 hr |
| Aug 10, 1:28 PM CDT | Heat Advisory | PAH | Edwards, Gallatin, Hamilton, Hardin, Pope, Saline and 3 more | 54 hr |
| Aug 10, 2:08 PM CDT | Severe Thunderstorm Watch | SPC | Henderson, Mercer, Rock Island, Warren | 6 hr |
| Aug 10, 2:20 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clay, Clinton, Edwards, Franklin and 21 more | 2 hr |
| Aug 10, 2:28 PM CDT | Heat Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 29 hr |
| Aug 10, 3:07 PM CDT | Heat Advisory | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 28 hr |
| Aug 10, 3:10 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, Jo Daviess, Kane, Lake and 6 more | 2 hr |
| Aug 10, 3:47 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 15 more | 6 hr |
| Aug 10, 3:49 PM CDT | Heat Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 27 hr |
| Aug 10, 3:52 PM CDT | Special Weather Statement | PAH | Franklin, Jefferson, Perry | 38 min |
| Aug 10, 4:04 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 56 min |
| Aug 10, 5:00 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Whiteside | 45 min |
| Aug 10, 5:21 PM CDT | Special Weather Statement | LOT | Lee, Ogle, Winnebago | 54 min |
| Aug 10, 5:24 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson, Whiteside | 51 min |
| Aug 10, 5:39 PM CDT | Severe Thunderstorm Warning | LOT | Lee, Ogle, Winnebago | 81 min |
| Aug 10, 5:47 PM CDT | Special Weather Statement | DVN | Bureau | 13 min |
| Aug 10, 5:47 PM CDT | Special Weather Statement | DVN | Bureau | 13 min |
| Aug 10, 5:49 PM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 41 min |
| Aug 10, 5:51 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, DuPage, Jo Daviess, Kane and 7 more | 84 min |
| Aug 10, 6:10 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle, Lee | 65 min |
| Aug 10, 6:16 PM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 13 min |
| Aug 10, 6:16 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, McHenry | 74 min |
| Aug 10, 6:34 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kane, Lake, McHenry | 86 min |
| Aug 10, 6:38 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kane, Kendall | 82 min |
| Aug 10, 6:50 PM CDT | Severe Thunderstorm Warning | DVN | Bureau | 25 min |
| Aug 10, 6:53 PM CDT | Special Weather Statement | DVN | Mercer, Warren | 37 min |
| Aug 10, 6:55 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Will | 95 min |
| Aug 10, 7:03 PM CDT | Special Marine Warning | LOT | 117 min | |
| Aug 10, 7:11 PM CDT | Severe Thunderstorm Warning | LOT | Will | 49 min |
| Aug 10, 7:13 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle | 47 min |
| Aug 10, 7:38 PM CDT | Severe Thunderstorm Watch | SPC | Kankakee | 5 hr |
| Aug 10, 9:22 PM CDT | Special Weather Statement | LOT | Kankakee | 53 min |
| Aug 11, 1:20 AM CDT | Mesoscale Discussion | SPC | Bureau, Ford, Fulton, Grundy, Henry, Iroquois and 15 more | 115 min |
| Aug 11, 4:49 AM CDT | Mesoscale Discussion | SPC | Adams | 86 min |
| Aug 11, 5:56 AM CDT | Severe Thunderstorm Warning | DVN | Hancock | 19 min |
| Aug 11, 6:24 AM CDT | Special Weather Statement | DVN | McDonough | 36 min |
| Aug 11, 6:24 AM CDT | Severe Thunderstorm Warning | DVN | Henderson, Warren | 22 min |
| Aug 11, 6:26 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Fulton, Hancock, Henderson and 12 more | 2 hr |
| Aug 11, 6:38 AM CDT | Severe Thunderstorm Warning | DVN | Henderson, Mercer, Warren | 37 min |
| Aug 11, 6:39 AM CDT | Small Craft Advisory | LOT | 15 hr | |
| Aug 11, 6:59 AM CDT | Flash Flood Warning | DVN | Hancock, Henderson | 3 hr |
| Aug 11, 7:00 AM CDT | Special Weather Statement | ILX | Knox | 60 min |
| Aug 11, 7:32 AM CDT | Special Weather Statement | DVN | Rock Island | 28 min |
| Aug 11, 7:55 AM CDT | Special Weather Statement | DVN | Bureau, Henry, Whiteside | 65 min |
| Aug 11, 8:07 AM CDT | Severe Thunderstorm Warning | DVN | Bureau, Henry, Rock Island, Whiteside | 53 min |
| Aug 11, 8:16 AM CDT | High Wind Warning | DVN | Henderson, Henry, Mercer, Rock Island, Warren, Whiteside | 104 min |
| Aug 11, 8:25 AM CDT | Severe Thunderstorm Warning | LOT | Lee | 50 min |
| Aug 11, 8:33 AM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam, Whiteside | 57 min |
| Aug 11, 8:34 AM CDT | Mesoscale Discussion | SPC | Bureau, Cook, DeKalb, DuPage, Ford, Grundy and 13 more | 86 min |
| Aug 11, 8:41 AM CDT | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle, Lee | 49 min |
| Aug 11, 8:52 AM CDT | Severe Thunderstorm Watch | SPC | Cook, DeKalb, DuPage, Grundy, Kane, Kankakee and 6 more | 4 hr |
| Aug 11, 9:05 AM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kane, Kendall | 40 min |
| Aug 11, 9:25 AM CDT | Severe Thunderstorm Warning | LOT | DuPage, Kane, Will | 65 min |
| Aug 11, 9:35 AM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Ogle, Winnebago | 42 min |
| Aug 11, 9:40 AM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 65 min |
| Aug 11, 9:46 AM CDT | Areal Flood Warning | DVN | Henderson | 3 hr |
| Aug 11, 9:46 AM CDT | Severe Thunderstorm Warning | LOT | Kane, Lake, McHenry | 59 min |
| Aug 11, 9:47 AM CDT | Special Marine Warning | LOT | 118 min | |
| Aug 11, 9:50 AM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kane, Kendall | 40 min |
| Aug 11, 9:52 AM CDT | Mesoscale Discussion | SPC | Cook, DuPage, Grundy, Kane, Kankakee, Lake and 1 more | 83 min |
| Aug 11, 9:59 AM CDT | Special Weather Statement | DVN | McDonough | 31 min |
| Aug 11, 10:24 AM CDT | Special Weather Statement | LOT | Iroquois, Kankakee | 66 min |
| Aug 11, 10:45 AM CDT | Special Weather Statement | DVN | Henderson, Warren | 30 min |
| Aug 11, 10:50 AM CDT | Special Weather Statement | ILX | Knox | 40 min |
| Aug 11, 10:57 AM CDT | Severe Thunderstorm Warning | DVN | Henderson, McDonough, Warren | 33 min |
| Aug 11, 12:06 PM CDT | Special Marine Warning | LOT | 54 min | |
| Aug 11, 3:56 PM CDT | Mesoscale Discussion | SPC | Carroll, Hancock, Henderson, Henry, Jo Daviess, Mercer and 2 more | 3 hr |
| Aug 11, 5:40 PM CDT | Mesoscale Discussion | SPC | Carroll, Jo Daviess, Stephenson | 95 min |
| Aug 11, 7:35 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 20 more | 85 min |
| Aug 11, 8:22 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Cook, DeKalb, DuPage, Ford, Grundy and 11 more | 8 hr |
| Aug 11, 8:34 PM CDT | Special Weather Statement | DVN | Bureau | 26 min |
| Aug 11, 8:57 PM CDT | Severe Thunderstorm Warning | LOT | DuPage, Kane | 48 min |
| Aug 11, 9:43 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 26 min |
| Aug 11, 11:06 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 15 more | 84 min |
| Aug 12, 12:45 AM CDT | Special Weather Statement | LOT | Kendall | 45 min |
| Aug 12, 1:31 AM CDT | Special Weather Statement | LOT | Livingston | 44 min |
| Aug 12, 2:13 AM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Kankakee, Livingston | 47 min |
| Aug 12, 2:22 AM CDT | Special Weather Statement | LOT | Will | 38 min |
| Aug 12, 2:27 AM CDT | Special Weather Statement | LOT | Will | 33 min |
| Aug 12, 2:30 AM CDT | Severe Thunderstorm Warning | LOT | Kankakee, Will | 29 min |
| Aug 12, 2:39 AM CDT | Special Weather Statement | DVN | Henderson | 36 min |
| Aug 12, 2:43 AM CDT | Special Weather Statement | DVN | Putnam | 32 min |
| Aug 12, 2:45 AM CDT | Heat Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 22 more | 15 hr |
| Aug 12, 2:46 AM CDT | Special Marine Warning | LOT | 89 min | |
| Aug 12, 2:50 AM CDT | Special Weather Statement | LOT | LaSalle | 40 min |
| Aug 12, 2:55 AM CDT | Severe Thunderstorm Warning | LOT | Cook | 50 min |
| Aug 12, 2:57 AM CDT | Heat Advisory | DVN | Hancock, McDonough | 8 hr |
| Aug 12, 2:59 AM CDT | Special Weather Statement | DVN | Henderson, Warren | 31 min |
| Aug 12, 2:59 AM CDT | Special Weather Statement | ILX | McLean | 46 min |
| Aug 12, 3:02 AM CDT | Severe Thunderstorm Warning | LOT | LaSalle | 43 min |
| Aug 12, 3:14 AM CDT | Severe Thunderstorm Warning | ILX | McLean | 31 min |
| Aug 12, 3:16 AM CDT | Special Weather Statement | LOT | Grundy, Kendall, Will | 44 min |
| Aug 12, 3:16 AM CDT | Mesoscale Discussion | SPC | Bureau, Ford, Fulton, Grundy, Iroquois, Kankakee and 16 more | 119 min |
| Aug 12, 3:43 AM CDT | Special Weather Statement | LOT | DuPage, Kane, Kendall, Will | 47 min |
| Aug 12, 3:51 AM CDT | Special Weather Statement | ILX | McLean | 24 min |
| Aug 12, 3:51 AM CDT | Special Weather Statement | LOT | Ford, Iroquois | 39 min |
| Aug 12, 4:02 AM CDT | Special Weather Statement | ILX | Tazewell | 43 min |
| Aug 12, 4:26 AM CDT | Severe Thunderstorm Warning | ILX | Logan, McLean, Tazewell | 21 min |
| Aug 12, 4:59 AM CDT | Special Weather Statement | LOT | Livingston | 31 min |
| Aug 12, 8:01 AM CDT | Special Weather Statement | LOT | Ford | 29 min |
| Aug 12, 8:12 AM CDT | Special Weather Statement | ILX | McLean | 48 min |
| Aug 12, 8:22 AM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois | 68 min |
| Aug 12, 9:13 AM CDT | Severe Thunderstorm Warning | ILX | Champaign, McLean | 47 min |
| Aug 12, 9:24 AM CDT | Areal Flood Advisory | ILX | DeWitt, McLean, Piatt | 3 hr |
| Aug 12, 9:27 AM CDT | Areal Flood Advisory | LOT | Ford | 2 hr |
| Aug 12, 9:30 AM CDT | Special Weather Statement | LOT | Ford | 45 min |
| Aug 12, 9:54 AM CDT | Special Weather Statement | DVN | Hancock, Henderson, McDonough | 96 min |
| Aug 12, 9:59 AM CDT | Flash Flood Warning | LOT | Ford | 5 hr |
| Aug 12, 10:04 AM CDT | Flash Flood Warning | ILX | Champaign, McLean | 5 hr |
| Aug 12, 10:52 AM CDT | Severe Thunderstorm Warning | ILX | Champaign | 38 min |
| Aug 12, 11:10 AM CDT | Special Weather Statement | DVN | Putnam | 35 min |
| Aug 12, 11:17 AM CDT | Flash Flood Warning | ILX | Champaign, DeWitt, Piatt | 3 hr |
| Aug 12, 11:26 AM CDT | Special Weather Statement | ILX | Fulton, Tazewell | 49 min |
| Aug 12, 11:29 AM CDT | Special Weather Statement | DVN | Hancock, McDonough | 91 min |
| Aug 12, 12:01 PM CDT | Areal Flood Advisory | LOT | Ford | 4 hr |
| Aug 12, 12:09 PM CDT | Special Weather Statement | LOT | Livingston | 51 min |
| Aug 12, 12:16 PM CDT | Special Weather Statement | ILX | Logan | 44 min |
| Aug 12, 12:44 PM CDT | Flash Flood Watch | DVN | Hancock, Henderson, McDonough, Warren | 8 hr |
| Aug 12, 12:55 PM CDT | Special Weather Statement | DVN | Hancock, McDonough | 95 min |
| Aug 12, 1:05 PM CDT | Special Weather Statement | ILX | Vermilion | 40 min |
| Aug 12, 1:09 PM CDT | Special Weather Statement | LOT | Iroquois | 51 min |
| Aug 12, 1:39 PM CDT | River Flood Watch | DVN | Hancock, McDonough | 8 hr |
| Aug 12, 1:45 PM CDT | Special Weather Statement | ILX | Champaign, Piatt | 45 min |
| Aug 12, 2:16 PM CDT | Flash Flood Warning | ILX | Champaign, DeWitt, Piatt | 119 min |
| Aug 12, 2:22 PM CDT | Mesoscale Discussion | SPC | Bond, Cass, Champaign, Christian, Clark, Clay and 26 more | 83 min |
| Aug 12, 2:23 PM CDT | Special Weather Statement | ILX | Champaign | 52 min |
| Aug 12, 2:35 PM CDT | Special Weather Statement | ILX | Christian, Morgan, Sangamon | 25 min |
| Aug 12, 2:43 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon, Sangamon | 47 min |
| Aug 12, 2:44 PM CDT | Small Craft Advisory | LOT | 7 hr | |
| Aug 12, 2:53 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 37 min |
| Aug 12, 2:59 PM CDT | Areal Flood Warning | LOT | Ford | 19 hr |
| Aug 12, 3:01 PM CDT | Areal Flood Warning | ILX | Champaign, McLean | 6 hr |
| Aug 12, 3:08 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon, Moultrie, Shelby | 52 min |
| Aug 12, 3:43 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Cumberland, Effingham, Moultrie, Shelby | 47 min |
| Aug 12, 4:15 PM CDT | Flash Flood Warning | ILX | Douglas, Moultrie, Shelby | 3 hr |
| Aug 12, 4:29 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Crawford, Cumberland, Effingham, Jasper, Shelby | 46 min |
| Aug 12, 4:45 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Pike | 45 min |
| Aug 12, 4:50 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 40 min |
| Aug 12, 4:56 PM CDT | Areal Flood Advisory | LSX | Adams | 4 hr |
| Aug 12, 5:09 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Crawford, Jasper | 36 min |
| Aug 12, 5:19 PM CDT | Severe Thunderstorm Watch | SPC | Calhoun, Clinton, Greene, Jersey, Macoupin, Madison and 7 more | 5 hr |
| Aug 12, 5:27 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Pike | 48 min |
| Aug 12, 5:28 PM CDT | Special Weather Statement | ILX | Scott | 32 min |
| Aug 12, 5:28 PM CDT | Areal Flood Advisory | LSX | Bond, Madison | 4 hr |
| Aug 12, 5:30 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan, Scott | 18 min |
| Aug 12, 5:51 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 54 min |
| Aug 12, 6:06 PM CDT | Mesoscale Discussion | SPC | Calhoun, Jersey, Madison, Monroe, Saint Clair | 84 min |
| Aug 12, 6:37 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Madison, Monroe, Saint Clair, Washington | 53 min |
| Aug 12, 7:14 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Madison, Monroe, Randolph, Saint Clair, Washington | 61 min |
| Aug 12, 7:20 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 11 more | 85 min |
| Aug 12, 7:23 PM CDT | Severe Thunderstorm Warning | PAH | Jackson, Perry | 52 min |
| Aug 12, 7:37 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 4 hr |
| Aug 12, 7:40 PM CDT | Flash Flood Warning | LSX | Bond, Madison | 4 hr |
| Aug 12, 8:07 PM CDT | Severe Thunderstorm Warning | PAH | Franklin, Jefferson, Perry | 38 min |
| Aug 12, 8:11 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 49 min |
| Aug 12, 8:34 PM CDT | Special Weather Statement | PAH | Franklin, Hamilton, Saline, Union, Wayne, Williamson | 71 min |
| Aug 12, 9:39 PM CDT | Special Weather Statement | PAH | Hamilton, Johnson, Pulaski, Saline, Union, White and 1 more | 66 min |
| Aug 12, 9:55 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Johnson and 7 more | 95 min |
| Aug 12, 10:44 PM CDT | Special Weather Statement | PAH | Alexander | 46 min |
| Aug 13, 8:25 AM CDT | River Flood Warning | ILX | Piatt | 5 days |
| Aug 18, 1:33 PM CDT | Areal Flood Advisory | LOT | Will | 93 min |
| Aug 18, 2:45 PM CDT | Special Weather Statement | ILX | Vermilion | 45 min |
| Aug 18, 3:21 PM CDT | Special Weather Statement | LOT | Will | 39 min |
| Aug 18, 8:21 PM CDT | Areal Flood Advisory | LOT | Kankakee | 114 min |
| Aug 19, 11:27 AM CDT | Special Weather Statement | LOT | Cook | 33 min |
| Aug 19, 1:46 PM CDT | Areal Flood Advisory | LOT | Cook | 119 min |
| Aug 19, 4:44 PM CDT | Special Weather Statement | LOT | McHenry | 46 min |
| Aug 20, 5:23 AM CDT | Dense Fog Advisory | LOT | Cook, Lake, McHenry | 3 hr |
| Aug 21, 2:53 AM CDT | Special Weather Statement | DVN | Hancock, Henderson, McDonough, Warren | 67 min |
| Aug 21, 3:16 AM CDT | Small Craft Advisory | LOT | 46 hr | |
| Aug 21, 3:29 AM CDT | Special Weather Statement | ILX | Schuyler | 31 min |
| Aug 21, 6:54 AM CDT | Flash Flood Warning | PAH | Massac, Pope | 5 hr |
| Aug 21, 10:08 AM CDT | Beach Hazards Statement | LOT | Cook, Lake | 39 hr |
| Aug 21, 2:10 PM CDT | Areal Flood Advisory | LSX | Marion | 43 min |
| Aug 21, 2:53 PM CDT | Areal Flood Warning | LSX | Marion | 3 hr |
| Aug 21, 3:24 PM CDT | Special Marine Warning | LOT | 96 min | |
| Aug 21, 4:23 PM CDT | Special Weather Statement | PAH | Jackson | 37 min |
| Aug 22, 2:45 AM CDT | Dense Fog Advisory | ILX | Clark, Clay, Coles, Crawford, Cumberland, Douglas and 6 more | 6 hr |
| Aug 22, 3:43 AM CDT | Dense Fog Advisory | PAH | Edwards, Gallatin, Hamilton, Hardin, Wabash, Wayne and 1 more | 4 hr |
| Aug 22, 2:38 PM CDT | Heat Advisory | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 6 days |
| Aug 22, 2:59 PM CDT | Heat Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 6 days |
| Aug 23, 3:51 AM CDT | Dense Fog Advisory | ILX | Champaign, Christian, Clark, Clay, Coles, Crawford and 15 more | 4 hr |
| Aug 23, 11:31 AM CDT | Special Weather Statement | DVN | Warren | 29 min |
| Aug 23, 12:49 PM CDT | Special Weather Statement | ILX | Schuyler | 26 min |
| Aug 23, 1:08 PM CDT | Severe Thunderstorm Warning | ILX | Schuyler | 37 min |
| Aug 23, 1:26 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan, Schuyler | 34 min |
| Aug 23, 1:47 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan | 43 min |
| Aug 23, 2:18 PM CDT | Mesoscale Discussion | SPC | Bond, Fayette, Greene, Jersey, Macoupin, Madison and 2 more | 117 min |
| Aug 23, 2:24 PM CDT | Special Weather Statement | DVN | Carroll | 36 min |
| Aug 23, 2:29 PM CDT | Special Weather Statement | ILX | Sangamon | 46 min |
| Aug 23, 2:45 PM CDT | Heat Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, McDonough and 5 more | 29 hr |
| Aug 23, 2:52 PM CDT | Special Weather Statement | LOT | Lee | 38 min |
| Aug 23, 2:53 PM CDT | Heat Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 5 days |
| Aug 23, 3:06 PM CDT | Severe Thunderstorm Warning | LOT | Lee, Ogle | 24 min |
| Aug 23, 3:47 PM CDT | Special Weather Statement | LOT | Lee | 43 min |
| Aug 23, 4:23 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 26 min |
| Aug 23, 6:04 PM CDT | Areal Flood Advisory | LSX | Monroe, Randolph | 3 hr |
| Aug 24, 3:19 AM CDT | Heat Advisory | LOT | Cook, DeKalb, Ford, Grundy, Iroquois, Kankakee and 6 more | 17 hr |
| Aug 24, 6:00 AM CDT | Mesoscale Discussion | SPC | Jo Daviess | 90 min |
| Aug 24, 1:52 PM CDT | Severe Thunderstorm Watch | SPC | Carroll, Jo Daviess, Rock Island, Stephenson, Whiteside | 5 hr |
| Aug 24, 3:09 PM CDT | Mesoscale Discussion | SPC | Boone, McHenry, Ogle, Stephenson, Winnebago | 66 min |
| Aug 24, 3:30 PM CDT | Special Marine Warning | LOT | 60 min | |
| Aug 24, 3:42 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 48 min |
| Aug 24, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Kane, Lake and 4 more | 5 hr |
| Aug 24, 4:17 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess, Stephenson | 58 min |
| Aug 24, 4:21 PM CDT | Special Weather Statement | LOT | Boone | 24 min |
| Aug 24, 4:33 PM CDT | Heat Advisory | LOT | Ford, Grundy, Iroquois, Kankakee, LaSalle, Livingston and 1 more | 26 hr |
| Aug 24, 4:58 PM CDT | Areal Flood Advisory | LOT | Boone, Lake, McHenry | 3 hr |
| Aug 24, 5:01 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson | 59 min |
| Aug 24, 5:10 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, DuPage, Jo Daviess, Kane and 7 more | 2 hr |
| Aug 24, 5:13 PM CDT | Special Weather Statement | LOT | DuPage | 32 min |
| Aug 24, 5:23 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Henry, Rock Island, Whiteside | 37 min |
| Aug 24, 5:26 PM CDT | Severe Thunderstorm Warning | LOT | Boone, Lee, Ogle, Winnebago | 64 min |
| Aug 24, 5:28 PM CDT | Special Marine Warning | LOT | 92 min | |
| Aug 24, 5:40 PM CDT | Flash Flood Warning | LOT | Boone, McHenry | 4 hr |
| Aug 24, 5:46 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Henry, Mercer, Rock Island, Whiteside | 44 min |
| Aug 24, 6:09 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Kane, Lee, McHenry, Ogle | 66 min |
| Aug 24, 6:13 PM CDT | Beach Hazards Statement | LOT | Cook, Lake | 4 hr |
| Aug 24, 6:19 PM CDT | Areal Flood Advisory | LOT | Cook, DuPage, Lake | 17 min |
| Aug 24, 6:36 PM CDT | Flash Flood Warning | LOT | Cook, DuPage, Lake | 3 hr |
| Aug 24, 6:49 PM CDT | Special Weather Statement | DVN | Rock Island | 41 min |
| Aug 24, 6:54 PM CDT | Special Weather Statement | LOT | Kendall, LaSalle | 51 min |
| Aug 24, 7:04 PM CDT | Special Marine Warning | LOT | 116 min | |
| Aug 24, 7:08 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kane, Lake, McHenry | 67 min |
| Aug 24, 7:22 PM CDT | Special Weather Statement | DVN | Henry | 53 min |
| Aug 24, 7:25 PM CDT | Special Weather Statement | LOT | Grundy, Will | 50 min |
| Aug 24, 7:26 PM CDT | Special Weather Statement | ILX | Knox, Stark | 64 min |
| Aug 24, 7:31 PM CDT | Areal Flood Advisory | LOT | Boone, Lake, McHenry | 3 hr |
| Aug 24, 8:00 PM CDT | Special Weather Statement | ILX | Knox, Marshall, Peoria, Stark | 60 min |
| Aug 24, 8:14 PM CDT | Mesoscale Discussion | SPC | Grundy, Kankakee, Knox, Livingston, Marshall, Peoria and 2 more | 2 hr |
| Aug 24, 8:17 PM CDT | Special Weather Statement | LOT | Kankakee, Livingston | 43 min |
| Aug 24, 8:28 PM CDT | Special Weather Statement | ILX | Peoria, Tazewell, Woodford | 47 min |
| Aug 24, 8:43 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, McLean, Mason, Peoria, Tazewell, Woodford | 47 min |
| Aug 24, 8:43 PM CDT | Areal Flood Advisory | LOT | Cook | 4 hr |
| Aug 24, 9:10 PM CDT | Special Weather Statement | ILX | DeWitt, Logan, McLean | 50 min |
| Aug 24, 9:45 PM CDT | Special Weather Statement | ILX | DeWitt, Macon, Menard, Piatt, Sangamon | 30 min |
| Aug 24, 10:18 PM CDT | Special Weather Statement | ILX | Christian, Macon, Moultrie, Piatt | 57 min |
| Aug 24, 10:36 PM CDT | Special Weather Statement | ILX | Champaign, Vermilion | 54 min |
| Aug 24, 11:05 PM CDT | Special Weather Statement | ILX | Christian, Coles, Douglas, Moultrie, Shelby | 40 min |
| Aug 25, 3:37 PM CDT | Special Weather Statement | DVN | Henry | 53 min |
| Aug 25, 3:39 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 36 min |
| Aug 25, 3:43 PM CDT | Tornado Warning | DVN | Henry | 17 min |
| Aug 25, 4:02 PM CDT | Mesoscale Discussion | SPC | Bureau, Champaign, Clark, Coles, DeWitt, Douglas and 28 more | 88 min |
| Aug 25, 4:10 PM CDT | Severe Thunderstorm Warning | ILX | Knox | 50 min |
| Aug 25, 4:11 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 49 min |
| Aug 25, 4:15 PM CDT | Special Weather Statement | ILX | Edgar | 45 min |
| Aug 25, 4:33 PM CDT | Special Weather Statement | ILX | Vermilion | 42 min |
| Aug 25, 4:42 PM CDT | Severe Thunderstorm Warning | ILX | Stark | 33 min |
| Aug 25, 4:46 PM CDT | Severe Thunderstorm Warning | DVN | Bureau | 29 min |
| Aug 25, 4:51 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox | 24 min |
| Aug 25, 4:59 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 46 min |
| Aug 25, 5:22 PM CDT | Special Weather Statement | ILX | Peoria | 53 min |
| Aug 25, 5:42 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 33 min |
| Aug 25, 6:11 PM CDT | Severe Thunderstorm Warning | ILX | Peoria, Tazewell | 34 min |
| Aug 25, 6:12 PM CDT | Special Weather Statement | DVN | McDonough | 33 min |
| Aug 25, 6:23 PM CDT | Areal Flood Advisory | LOT | Cook, DuPage, Will | 3 hr |
| Aug 25, 6:29 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Will | 31 min |
| Aug 25, 6:38 PM CDT | Special Marine Warning | LOT | 104 min | |
| Aug 25, 7:21 PM CDT | Flash Flood Warning | LOT | Cook, DuPage | 3 hr |
| Aug 25, 7:33 PM CDT | Special Marine Warning | LOT | 117 min | |
| Aug 25, 8:34 PM CDT | Areal Flood Advisory | LOT | Cook, Kankakee, Will | 3 hr |
| Aug 25, 8:43 PM CDT | Special Weather Statement | LOT | Kankakee | 47 min |
| Aug 25, 8:54 PM CDT | Areal Flood Advisory | LOT | DuPage, Kane, Kendall, Will | 17 min |
| Aug 25, 9:06 PM CDT | Flash Flood Warning | LOT | DuPage, Kane, Kendall, Will | 5 hr |
| Aug 25, 9:15 PM CDT | Flash Flood Warning | LOT | Cook, Kankakee, Will | 4 hr |
| Aug 26, 1:38 AM CDT | Areal Flood Advisory | LOT | Kane, Kendall | 2 hr |
| Aug 26, 2:11 AM CDT | Special Weather Statement | ILX | Sangamon | 19 min |
| Aug 26, 3:27 AM CDT | Heat Advisory | DVN | Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 3 more | 17 hr |
| Aug 26, 3:45 AM CDT | Special Weather Statement | ILX | Christian | 15 min |
| Aug 26, 12:05 PM CDT | Special Weather Statement | ILX | Douglas | 40 min |
| Aug 26, 12:58 PM CDT | Special Weather Statement | ILX | Coles | 47 min |
| Aug 26, 2:04 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 41 min |
| Aug 26, 2:20 PM CDT | Flash Flood Warning | ILX | Coles, Cumberland, Moultrie, Shelby | 3 hr |
| Aug 26, 2:26 PM CDT | Special Weather Statement | ILX | Douglas, Macon, Moultrie, Piatt | 34 min |
| Aug 26, 2:45 PM CDT | Flash Flood Warning | LSX | Montgomery | 4 hr |
| Aug 26, 2:56 PM CDT | Flash Flood Warning | ILX | Champaign, Douglas, Moultrie, Piatt | 3 hr |
| Aug 26, 3:05 PM CDT | Special Weather Statement | ILX | Moultrie | 40 min |
| Aug 26, 3:11 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Moultrie, Shelby | 34 min |
| Aug 26, 3:27 PM CDT | Special Weather Statement | ILX | Shelby | 48 min |
| Aug 26, 3:36 PM CDT | Severe Thunderstorm Warning | ILX | Shelby | 24 min |
| Aug 26, 3:57 PM CDT | Special Weather Statement | ILX | Shelby | 48 min |
| Aug 26, 4:33 PM CDT | Special Weather Statement | ILX | Morgan | 42 min |
| Aug 26, 4:38 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 52 min |
| Aug 26, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 25 min |
| Aug 26, 5:30 PM CDT | Special Weather Statement | LOT | Cook | 30 min |
| Aug 26, 5:42 PM CDT | Special Weather Statement | ILX | Scott | 48 min |
| Aug 26, 5:50 PM CDT | Flash Flood Watch | DVN | Carroll, Jo Daviess | 13 hr |
| Aug 26, 5:57 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette | 48 min |
| Aug 26, 6:03 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Scott | 27 min |
| Aug 26, 6:54 PM CDT | Areal Flood Advisory | LSX | Bond | 3 hr |
| Aug 27, 1:34 PM CDT | Heat Advisory | DVN | Hancock, McDonough | 29 hr |
| Aug 27, 3:07 PM CDT | Heat Advisory | DVN | Henderson, Warren | 28 hr |
| Aug 27, 4:07 PM CDT | Special Weather Statement | PAH | Edwards | 23 min |
| Aug 27, 4:17 PM CDT | Special Weather Statement | PAH | Edwards | 28 min |
| Aug 27, 4:55 PM CDT | Areal Flood Advisory | PAH | Edwards, Wabash | 3 hr |
| Aug 27, 5:58 PM CDT | Areal Flood Advisory | PAH | Wayne, White | 2 hr |
| Aug 27, 6:35 PM CDT | Special Weather Statement | PAH | Hamilton | 25 min |
| Aug 27, 6:48 PM CDT | Flash Flood Warning | PAH | Edwards | 61 min |
| Aug 27, 7:06 PM CDT | Areal Flood Advisory | PAH | Hamilton | 2 hr |
| Aug 28, 4:16 PM CDT | Special Marine Warning | LOT | 59 min | |
| Aug 28, 5:13 PM CDT | Special Marine Warning | LOT | 62 min | |
| Aug 28, 5:26 PM CDT | Areal Flood Advisory | LOT | Boone, McHenry | 2 hr |
| Aug 28, 5:53 PM CDT | Special Marine Warning | LOT | 27 min | |
| Aug 28, 8:11 PM CDT | Small Craft Advisory | LOT | 20 hr | |
| Aug 29, 1:05 PM CDT | Special Weather Statement | LOT | McHenry | 40 min |
| Aug 29, 1:18 PM CDT | Mesoscale Discussion | SPC | Bureau, Champaign, Cook, DeKalb, DuPage, Ford and 20 more | 87 min |
| Aug 29, 1:40 PM CDT | Special Weather Statement | LOT | Lake | 35 min |
| Aug 29, 2:20 PM CDT | Special Weather Statement | LOT | Kane, Lake | 40 min |
| Aug 29, 3:02 PM CDT | Special Weather Statement | LOT | Lake | 43 min |
| Aug 29, 3:10 PM CDT | Special Marine Warning | LOT | 95 min | |
| Aug 29, 4:23 PM CDT | Special Weather Statement | LOT | Cook | 22 min |
| Aug 29, 4:29 PM CDT | Special Weather Statement | LOT | Will | 31 min |
| Aug 29, 4:52 PM CDT | Special Weather Statement | LOT | Will | 23 min |
| Aug 29, 5:50 PM CDT | Special Weather Statement | LOT | Kankakee | 40 min |
| Aug 30, 11:37 AM CDT | Flash Flood Warning | ILX | Clay, Richland | 3 hr |
| Aug 30, 11:39 AM CDT | Areal Flood Advisory | PAH | Jefferson | 3 hr |
| Aug 30, 12:19 PM CDT | Areal Flood Advisory | PAH | Wayne | 3 hr |
| Aug 30, 12:53 PM CDT | Areal Flood Advisory | ILX | Edgar, Vermilion | 3 hr |
| Aug 30, 1:41 PM CDT | Areal Flood Advisory | PAH | Hamilton, White | 2 hr |
| Aug 30, 1:53 PM CDT | Areal Flood Advisory | LSX | Fayette, Marion | 3 hr |
| Aug 30, 2:28 PM CDT | Special Weather Statement | ILX | Clark, Coles, Cumberland, Shelby | 32 min |
| Aug 30, 2:38 PM CDT | Areal Flood Advisory | LSX | Bond, Clinton, Madison, Saint Clair | 3 hr |
| Aug 30, 2:47 PM CDT | Areal Flood Advisory | ILX | Clay | 3 hr |
| Aug 30, 2:54 PM CDT | Flash Flood Warning | LSX | Madison, Saint Clair | 3 hr |
| Aug 30, 3:06 PM CDT | Special Weather Statement | ILX | Clark, Cumberland | 54 min |
| Aug 30, 3:16 PM CDT | Areal Flood Advisory | ILX | Clark, Coles, Edgar | 3 hr |
| Aug 30, 4:10 PM CDT | Areal Flood Advisory | LSX | Montgomery | 3 hr |
| Aug 30, 4:42 PM CDT | Areal Flood Advisory | PAH | Perry | 40 min |
| Aug 30, 5:22 PM CDT | Flash Flood Warning | PAH | Perry | 2 hr |
| Aug 30, 5:40 PM CDT | Areal Flood Advisory | LSX | Randolph | 3 hr |
| Aug 30, 6:22 PM CDT | Areal Flood Advisory | LSX | Clinton, Marion | 3 hr |
| Aug 30, 6:33 PM CDT | Areal Flood Advisory | PAH | Jefferson | 117 min |
| Aug 30, 7:06 PM CDT | Beach Hazards Statement | LOT | Cook, Lake | 63 hr |
| Aug 30, 8:49 PM CDT | Small Craft Advisory | LOT | 58 hr | |
| Aug 31, 1:17 PM CDT | Special Weather Statement | DVN | Rock Island | 58 min |
| Aug 31, 1:22 PM CDT | Special Weather Statement | DVN | Rock Island | 23 min |
| Aug 31, 2:01 PM CDT | Flash Flood Warning | DVN | Henry, Mercer, Rock Island | 6 hr |
| Aug 31, 2:46 PM CDT | Special Weather Statement | DVN | Henry, Rock Island | 59 min |
| Aug 31, 3:09 PM CDT | Flash Flood Warning | DVN | Henry, Rock Island | 2 hr |
| Aug 31, 3:41 PM CDT | Special Weather Statement | DVN | Mercer | 64 min |
| Aug 31, 3:49 PM CDT | Flash Flood Warning | DVN | Henry, Mercer | 4 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 | 93 |
| Tornado Warning | 18 |
| Severe Thunderstorm Watch | 10 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 32 |
| Special Weather Statement | 137 |
| Flooding | |
| Areal Flood Warning | 4 |
| Flash Flood Warning | 28 |
| River Flood Warning | 3 |
| Flash Flood Watch | 2 |
| River Flood Watch | 1 |
| Areal Flood Advisory | 48 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 21 |
| Wind and dust | |
| High Wind Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
| Coast and beach | |
| Beach Hazards Statement | 3 |
| Marine | |
| Special Marine Warning | 21 |
| Small Craft Advisory | 6 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Will County42
- Cook County41
- Kane County39
- DuPage County36
- DeKalb County32
- Lake County32
- Bureau County32
- Lee County31
- McHenry County29
- Grundy County28
- Kankakee County28
- Henry County28
- McLean County27
- Boone County27
- Kendall County27
- Ogle County26
- LaSalle County25
- Putnam County22
- Rock Island County22
- Warren County22
- Moultrie County21
- Shelby County21
- Winnebago County21
- Champaign County20
- Ford County20
- Livingston County20
- Henderson County20
- Piatt County19
- Tazewell County19
- Carroll County19
- McDonough County19
- Whiteside County19
- Woodford County18
- Stephenson County18
- Christian County17
- Logan County17
- Morgan County17
- Peoria County17
- Sangamon County17
- Jo Daviess County17
62 more counties
- Mercer County17
- Coles County17
- Knox County17
- DeWitt County16
- Macon County16
- Iroquois County16
- Madison County16
- Saint Clair County16
- Hancock County16
- Marshall County15
- Bond County15
- Stark County15
- Vermilion County15
- Scott County14
- Adams County14
- Clay County14
- Douglas County14
- Hamilton County14
- Fulton County13
- Mason County13
- Menard County13
- Schuyler County13
- Greene County13
- Montgomery County13
- Clinton County13
- Perry County13
- Cumberland County13
- Clark County13
- Cass County12
- Calhoun County12
- Jersey County12
- Pike County12
- Marion County12
- Effingham County12
- Wayne County12
- Monroe County11
- Washington County11
- Jackson County11
- Jefferson County11
- Jasper County11
- Edwards County11
- White County11
- Edgar County11
- Macoupin County10
- Randolph County10
- Fayette County10
- Union County10
- Williamson County10
- Franklin County10
- Richland County10
- Saline County10
- Crawford County10
- Brown County9
- Alexander County9
- Johnson County9
- Pulaski County9
- Massac County8
- Gallatin County8
- Hardin County8
- Pope County8
- Lawrence County8
- Wabash County7
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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. Warning verification from the Mesonet's Cow. Rebuilt daily.