Alert archive / Illinois / 2018
Weather alerts in Illinois, August 2018
247 weather alerts in August 2018, 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 2018. Tap one for its archive.
- Alerts
- 247
- Warnings
- 77
- Watches
- 7
- Advisories
- 45
- Busiest day
- August 17, 201840 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, 3:34 AM CDT | Dense Fog Advisory | ILX | Christian, Clark, Clay, Coles, Crawford, Cumberland and 11 more | 5 hr |
| Aug 1, 6:39 AM CDT | Dense Fog Advisory | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 11 more | 2 hr |
| Aug 1, 2:56 PM CDT | Special Weather Statement | LOT | DuPage | 19 min |
| Aug 1, 3:14 PM CDT | Special Weather Statement | LOT | DuPage | 16 min |
| Aug 1, 3:20 PM CDT | Special Marine Warning | LOT | 25 min | |
| Aug 1, 3:51 PM CDT | Special Marine Warning | LOT | 39 min | |
| Aug 1, 4:41 PM CDT | Special Marine Warning | LOT | 49 min | |
| Aug 1, 5:11 PM CDT | Special Weather Statement | LOT | DuPage | 19 min |
| Aug 1, 5:17 PM CDT | Severe Thunderstorm Warning | LOT | DuPage, Kane, Will | 18 min |
| Aug 1, 5:31 PM CDT | Special Marine Warning | LOT | 29 min | |
| Aug 1, 6:54 PM CDT | Special Weather Statement | LOT | Kane | 21 min |
| Aug 1, 7:19 PM CDT | Special Weather Statement | LOT | DuPage | 26 min |
| Aug 2, 12:02 AM CDT | Special Weather Statement | DVN | Carroll, Jo Daviess, Stephenson | 58 min |
| Aug 2, 3:24 PM CDT | Special Weather Statement | LOT | Kankakee | 21 min |
| Aug 2, 4:41 PM CDT | Special Weather Statement | LSX | Madison | 19 min |
| Aug 2, 5:18 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 25 min |
| Aug 2, 5:32 PM CDT | Severe Thunderstorm Warning | ILX | Moultrie, Shelby | 43 min |
| Aug 2, 5:54 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 36 min |
| Aug 2, 6:28 PM CDT | Special Weather Statement | LOT | Iroquois | 17 min |
| Aug 2, 6:47 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 43 min |
| Aug 2, 6:58 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 47 min |
| Aug 2, 7:28 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 47 min |
| Aug 3, 5:40 AM CDT | Dense Fog Advisory | LOT | Boone, McHenry, Winnebago | 2 hr |
| Aug 5, 3:00 AM CDT | Small Craft Advisory | LOT | 16 hr | |
| Aug 5, 3:18 PM CDT | Special Weather Statement | PAH | Massac | 42 min |
| Aug 5, 3:52 PM CDT | Areal Flood Advisory | PAH | Massac | 53 min |
| Aug 5, 5:44 PM CDT | Mesoscale Discussion | SPC | Carroll, Jo Daviess, Ogle, Rock Island, Stephenson, Whiteside | 2 hr |
| Aug 5, 6:10 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 50 min |
| Aug 5, 6:45 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson | 45 min |
| Aug 5, 7:44 PM CDT | Severe Thunderstorm Warning | LOT | Ogle, Winnebago | 31 min |
| Aug 5, 7:58 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Kane, Lake and 3 more | 83 min |
| Aug 5, 8:15 PM CDT | Special Weather Statement | LOT | Boone, DeKalb, Ogle, Winnebago | 30 min |
| Aug 5, 10:20 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 55 min |
| Aug 6, 12:01 AM CDT | Special Weather Statement | DVN | Stephenson | 29 min |
| Aug 6, 12:13 AM CDT | Special Weather Statement | LOT | Winnebago | 47 min |
| Aug 6, 3:16 PM CDT | Mesoscale Discussion | SPC | Alexander, Clay, Edwards, Franklin, Gallatin, Hamilton and 19 more | 2 hr |
| Aug 6, 4:41 PM CDT | Special Weather Statement | LSX | Jersey | 34 min |
| Aug 6, 5:21 PM CDT | Mesoscale Discussion | SPC | Champaign, DeWitt, Ford, Iroquois, Kankakee, Livingston and 5 more | 114 min |
| Aug 6, 5:58 PM CDT | Special Weather Statement | LOT | Iroquois | 17 min |
| Aug 6, 6:27 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 48 min |
| Aug 6, 7:06 PM CDT | Special Weather Statement | ILX | Vermilion | 39 min |
| Aug 6, 7:08 PM CDT | Special Weather Statement | LOT | Ford | 22 min |
| Aug 6, 7:22 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 30 min |
| Aug 6, 7:39 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 43 min |
| Aug 6, 7:49 PM CDT | Special Weather Statement | LOT | Iroquois | 26 min |
| Aug 6, 7:57 PM CDT | Tornado Warning | ILX | Champaign | 22 min |
| Aug 6, 8:03 PM CDT | Special Weather Statement | LOT | Ford | 27 min |
| Aug 6, 8:24 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois | 51 min |
| Aug 6, 9:02 PM CDT | Flash Flood Warning | LOT | Ford | 3 hr |
| Aug 6, 10:14 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 46 min |
| Aug 6, 10:17 PM CDT | Flash Flood Warning | ILX | Champaign, Vermilion | 3 hr |
| Aug 6, 10:30 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 15 min |
| Aug 6, 10:46 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 44 min |
| Aug 7, 12:35 AM CDT | Severe Thunderstorm Warning | ILX | Cass, Fulton, Mason, Peoria, Schuyler, Tazewell | 40 min |
| Aug 7, 1:04 AM CDT | Mesoscale Discussion | SPC | Bond, Brown, Calhoun, Cass, Champaign, Christian and 24 more | 56 min |
| Aug 7, 1:15 AM CDT | Areal Flood Advisory | ILX | Champaign, Vermilion | 3 hr |
| Aug 7, 1:20 AM CDT | Severe Thunderstorm Warning | ILX | Fulton, Logan, Mason, Menard, Tazewell | 40 min |
| Aug 7, 1:24 AM CDT | Special Weather Statement | LSX | Calhoun, Jersey | 66 min |
| Aug 7, 1:35 AM CDT | Severe Thunderstorm Warning | ILX | Logan, McLean, Tazewell | 40 min |
| Aug 7, 1:41 AM CDT | Tornado Warning | ILX | Logan, Mason | 34 min |
| Aug 7, 1:45 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 33 min |
| Aug 7, 2:13 AM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, McLean, Macon | 15 min |
| Aug 7, 2:29 AM CDT | Special Weather Statement | LSX | Greene | 46 min |
| Aug 7, 3:03 AM CDT | Severe Thunderstorm Warning | ILX | Morgan, Sangamon | 42 min |
| Aug 7, 3:47 AM CDT | Special Weather Statement | ILX | Macon | 43 min |
| Aug 7, 4:12 AM CDT | Areal Flood Advisory | ILX | Champaign, Vermilion | 3 hr |
| Aug 7, 8:31 AM CDT | Areal Flood Advisory | PAH | Perry | 3 hr |
| Aug 7, 12:22 PM CDT | Mesoscale Discussion | SPC | Alexander, Gallatin, Hardin, Jackson, Johnson, Massac and 5 more | 113 min |
| Aug 7, 12:59 PM CDT | Special Weather Statement | DVN | Whiteside | 31 min |
| Aug 7, 2:57 PM CDT | Special Weather Statement | PAH | Gallatin | 48 min |
| Aug 7, 3:04 PM CDT | Areal Flood Advisory | LOT | Cook, DeKalb, DuPage, Kane, Lake, McHenry | 3 hr |
| Aug 7, 3:12 PM CDT | Severe Thunderstorm Warning | PAH | Gallatin | 33 min |
| Aug 7, 4:00 PM CDT | Flash Flood Warning | LOT | Cook, DuPage, Kane, Lake | 3 hr |
| Aug 7, 7:18 PM CDT | Special Weather Statement | DVN | Stephenson | 42 min |
| Aug 8, 4:07 AM CDT | Dense Fog Advisory | DVN | Henry, Rock Island | 5 hr |
| Aug 9, 12:32 PM CDT | Areal Flood Advisory | PAH | Union | 3 hr |
| Aug 9, 2:55 PM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Kane, Lake and 4 more | 65 min |
| Aug 9, 5:59 PM CDT | Special Weather Statement | LOT | Boone, McHenry, Winnebago | 61 min |
| Aug 9, 6:35 PM CDT | Special Weather Statement | DVN | Stephenson | 40 min |
| Aug 9, 6:59 PM CDT | Special Weather Statement | LOT | Boone, Ogle, Winnebago | 61 min |
| Aug 9, 7:34 PM CDT | Special Weather Statement | LOT | DuPage | 26 min |
| Aug 9, 7:38 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 20 min |
| Aug 9, 7:58 PM CDT | Special Weather Statement | LOT | Cook | 32 min |
| Aug 9, 9:08 PM CDT | Special Weather Statement | DVN | Whiteside | 37 min |
| Aug 9, 9:52 PM CDT | Special Weather Statement | LOT | Lee | 38 min |
| Aug 9, 10:29 PM CDT | Special Weather Statement | DVN | Whiteside | 46 min |
| Aug 10, 3:10 AM CDT | Dense Fog Advisory | LOT | Boone, DeKalb, DuPage, Kane, Lee, McHenry and 2 more | 6 hr |
| Aug 10, 4:02 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 43 min |
| Aug 10, 4:27 PM CDT | Severe Thunderstorm Warning | ILX | Moultrie | 48 min |
| Aug 10, 4:40 PM CDT | Areal Flood Advisory | LSX | Madison, Saint Clair | 2 hr |
| Aug 10, 4:48 PM CDT | Flash Flood Warning | LSX | Madison | 2 hr |
| Aug 10, 4:48 PM CDT | Mesoscale Discussion | SPC | Clark, Coles, Crawford, Cumberland, Douglas, Edgar and 5 more | 117 min |
| Aug 15, 2:14 PM CDT | Severe Thunderstorm Warning | PAH | Alexander, Pulaski | 31 min |
| Aug 15, 2:50 PM CDT | Mesoscale Discussion | SPC | Alexander, Gallatin, Hardin, Johnson, Massac, Pope and 4 more | 115 min |
| Aug 15, 3:02 PM CDT | Severe Thunderstorm Warning | PAH | Hardin | 28 min |
| Aug 15, 4:28 PM CDT | Special Weather Statement | DVN | Jo Daviess, Stephenson | 2 hr |
| Aug 16, 3:00 AM CDT | Dense Fog Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 6 hr |
| Aug 16, 3:17 AM CDT | Dense Fog Advisory | LOT | Boone, DeKalb, LaSalle, Lee, Ogle, Winnebago | 6 hr |
| Aug 16, 3:20 AM CDT | Dense Fog Advisory | ILX | Cass, Fulton, Knox, Marshall, Mason, Menard and 5 more | 6 hr |
| Aug 16, 4:39 PM CDT | Tornado Warning | ILX | Fulton | 36 min |
| Aug 16, 5:33 PM CDT | Special Weather Statement | DVN | Jo Daviess | 117 min |
| Aug 16, 6:58 PM CDT | Special Weather Statement | DVN | McDonough | 32 min |
| Aug 16, 7:21 PM CDT | Special Weather Statement | DVN | Rock Island | 24 min |
| Aug 16, 7:54 PM CDT | Special Weather Statement | DVN | McDonough | 21 min |
| Aug 16, 7:55 PM CDT | Special Weather Statement | DVN | Stephenson | 80 min |
| Aug 16, 8:01 PM CDT | Special Weather Statement | ILX | Schuyler | 29 min |
| Aug 16, 8:26 PM CDT | Special Weather Statement | ILX | Cass | 34 min |
| Aug 16, 8:27 PM CDT | Tornado Warning | DVN | Stephenson | 18 min |
| Aug 16, 8:34 PM CDT | Special Weather Statement | ILX | Menard | 26 min |
| Aug 16, 8:41 PM CDT | Special Weather Statement | LOT | Ogle | 34 min |
| Aug 16, 8:42 PM CDT | Special Weather Statement | ILX | Menard | 33 min |
| Aug 16, 9:10 PM CDT | Severe Thunderstorm Warning | ILX | Menard, Sangamon | 50 min |
| Aug 16, 9:36 PM CDT | Special Weather Statement | ILX | Cass | 39 min |
| Aug 16, 9:36 PM CDT | Special Weather Statement | LOT | Lee | 39 min |
| Aug 16, 9:51 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Menard | 39 min |
| Aug 16, 9:57 PM CDT | Special Weather Statement | ILX | Sangamon | 33 min |
| Aug 16, 10:06 PM CDT | Special Weather Statement | DVN | Putnam | 24 min |
| Aug 16, 10:22 PM CDT | Special Weather Statement | LOT | LaSalle | 38 min |
| Aug 16, 10:25 PM CDT | Severe Thunderstorm Warning | ILX | Menard, Sangamon | 50 min |
| Aug 16, 10:40 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clay, Clinton, Coles and 22 more | 2 hr |
| Aug 16, 10:41 PM CDT | Special Weather Statement | LSX | Greene | 34 min |
| Aug 16, 11:01 PM CDT | Special Weather Statement | ILX | McLean, Woodford | 44 min |
| Aug 16, 11:09 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon, Sangamon | 51 min |
| Aug 16, 11:10 PM CDT | Special Weather Statement | LOT | Livingston | 20 min |
| Aug 16, 11:45 PM CDT | Areal Flood Advisory | ILX | Sangamon | 3 hr |
| Aug 17, 12:10 AM CDT | Flash Flood Warning | ILX | Christian, Morgan, Sangamon | 77 min |
| Aug 17, 12:36 AM CDT | Special Weather Statement | LSX | Montgomery | 39 min |
| Aug 17, 12:52 AM CDT | Special Weather Statement | ILX | Champaign | 23 min |
| Aug 17, 12:55 AM CDT | Special Weather Statement | ILX | Moultrie | 35 min |
| Aug 17, 1:07 AM CDT | Special Weather Statement | DVN | Hancock | 38 min |
| Aug 17, 1:19 AM CDT | Flash Flood Warning | LSX | Montgomery | 6 hr |
| Aug 17, 1:37 AM CDT | Special Weather Statement | ILX | Champaign | 38 min |
| Aug 17, 1:52 AM CDT | Severe Thunderstorm Warning | ILX | Champaign | 26 min |
| Aug 17, 1:55 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette, Montgomery | 35 min |
| Aug 17, 2:02 AM CDT | Special Weather Statement | ILX | Clark | 43 min |
| Aug 17, 2:31 AM CDT | Flash Flood Warning | LSX | Fayette | 5 hr |
| Aug 17, 2:50 AM CDT | Special Weather Statement | LSX | Marion | 40 min |
| Aug 17, 3:45 AM CDT | Special Weather Statement | PAH | Jefferson, Wayne | 60 min |
| Aug 17, 4:22 AM CDT | Areal Flood Advisory | PAH | Edwards, Wabash, Wayne | 113 min |
| Aug 17, 6:41 AM CDT | Dense Fog Advisory | DVN | Rock Island | 2 hr |
| Aug 17, 12:30 PM CDT | Special Weather Statement | ILX | Cass, Champaign, Christian, DeWitt, Douglas, Fulton and 19 more | 6 hr |
| Aug 17, 5:05 PM CDT | Areal Flood Advisory | LOT | Cook | 3 hr |
| Aug 17, 7:38 PM CDT | Special Weather Statement | ILX | Lawrence | 22 min |
| Aug 19, 4:21 AM CDT | Dense Fog Advisory | LOT | Boone, DeKalb, Ford, Grundy, Iroquois, Kane and 8 more | 5 hr |
| Aug 19, 4:07 PM CDT | Beach Hazards Statement | LOT | Lake | 71 hr |
| Aug 20, 3:07 AM CDT | Small Craft Advisory | LOT | 22 hr | |
| Aug 20, 11:46 AM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clay, Clinton, Franklin, Hamilton and 17 more | 119 min |
| Aug 20, 12:46 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Clinton, Edwards, Franklin, Hamilton, Jackson and 16 more | 7 hr |
| Aug 20, 3:32 PM CDT | Small Craft Advisory | LOT | 51 hr | |
| Aug 20, 3:50 PM CDT | Special Weather Statement | PAH | Perry | 25 min |
| Aug 20, 4:00 PM CDT | Mesoscale Discussion | SPC | Alexander, Clinton, Edwards, Franklin, Gallatin, Hamilton and 14 more | 2 hr |
| Aug 20, 4:17 PM CDT | Special Weather Statement | PAH | Franklin, Jefferson | 43 min |
| Aug 20, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Gallatin, Hardin, Massac, Pope | 6 hr |
| Aug 20, 4:46 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Grundy and 11 more | 119 min |
| Aug 20, 4:50 PM CDT | Special Weather Statement | PAH | Alexander, Pulaski, Union | 40 min |
| Aug 20, 4:53 PM CDT | Special Weather Statement | PAH | Franklin | 22 min |
| Aug 20, 5:19 PM CDT | Special Weather Statement | PAH | Hamilton | 41 min |
| Aug 20, 5:28 PM CDT | Special Weather Statement | PAH | Alexander, Pulaski | 62 min |
| Aug 20, 6:12 PM CDT | Special Weather Statement | PAH | Massac, Pulaski | 63 min |
| Aug 20, 6:57 PM CDT | Special Weather Statement | PAH | Massac | 63 min |
| Aug 20, 7:02 PM CDT | Severe Thunderstorm Warning | PAH | Massac, Pope | 28 min |
| Aug 20, 9:56 PM CDT | Special Weather Statement | ILX | Tazewell | 49 min |
| Aug 21, 5:28 AM CDT | Special Marine Warning | LOT | 2 hr | |
| Aug 23, 3:40 PM CDT | Small Craft Advisory | LOT | 36 hr | |
| Aug 24, 2:50 AM CDT | Beach Hazards Statement | LOT | Lake | 22 hr |
| Aug 24, 5:54 AM CDT | Areal Flood Advisory | LSX | Adams | 4 hr |
| Aug 24, 7:08 AM CDT | Areal Flood Advisory | LSX | Brown, Pike | 3 hr |
| Aug 24, 8:30 AM CDT | Areal Flood Advisory | LSX | Calhoun, Greene, Jersey, Pike | 4 hr |
| Aug 24, 10:24 AM CDT | Areal Flood Advisory | LSX | Macoupin, Montgomery | 4 hr |
| Aug 24, 3:33 PM CDT | Heat Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 4 days |
| Aug 24, 3:47 PM CDT | Gale Warning | LOT | 11 hr | |
| Aug 25, 1:13 AM CDT | Special Weather Statement | DVN | Mercer | 32 min |
| Aug 25, 2:11 AM CDT | Special Weather Statement | DVN | Mercer | 49 min |
| Aug 25, 4:03 AM CDT | Dense Fog Advisory | DVN | Jo Daviess | 6 hr |
| Aug 25, 1:41 PM CDT | Heat Advisory | DVN | Hancock, Henderson, McDonough, Mercer, Rock Island, Warren | 5 hr |
| Aug 25, 5:15 PM CDT | Mesoscale Discussion | SPC | Bureau, Fulton, Grundy, Iroquois, Kankakee, Kendall and 11 more | 2 hr |
| Aug 25, 7:38 PM CDT | River Flood Advisory | LOT | Will, Winnebago | 4 days |
| Aug 26, 3:03 AM CDT | Dense Fog Advisory | DVN | Bureau, Carroll, Jo Daviess, Putnam, Stephenson, Whiteside | 5 hr |
| Aug 26, 3:03 AM CDT | Heat Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 64 hr |
| Aug 26, 3:07 AM CDT | Dense Fog Advisory | LOT | Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 6 more | 6 hr |
| Aug 26, 3:07 AM CDT | Heat Advisory | LOT | Ford, Grundy, Iroquois, Kankakee, LaSalle, Livingston | 16 hr |
| Aug 26, 3:43 AM CDT | Excessive Heat Warning | LSX | Madison, Monroe, Saint Clair | 63 hr |
| Aug 26, 4:09 AM CDT | Heat Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 63 hr |
| Aug 26, 12:30 PM CDT | Marine Dense Fog Advisory | LOT | 7 hr | |
| Aug 26, 2:56 PM CDT | Heat Advisory | LOT | DeKalb, DuPage, Ford, Grundy, Iroquois, Kane and 6 more | 28 hr |
| Aug 26, 6:45 PM CDT | Special Weather Statement | DVN | Mercer | 30 min |
| Aug 26, 7:51 PM CDT | Special Weather Statement | DVN | Stephenson | 39 min |
| Aug 26, 8:27 PM CDT | Special Weather Statement | DVN | Stephenson | 33 min |
| Aug 26, 8:30 PM CDT | Special Weather Statement | LOT | Winnebago | 45 min |
| Aug 26, 11:14 PM CDT | Special Weather Statement | DVN | Stephenson | 31 min |
| Aug 26, 11:19 PM CDT | Special Weather Statement | LOT | Winnebago | 56 min |
| Aug 26, 11:24 PM CDT | Severe Thunderstorm Warning | LOT | Winnebago | 36 min |
| Aug 26, 11:37 PM CDT | Severe Thunderstorm Warning | LOT | Winnebago | 24 min |
| Aug 27, 2:55 AM CDT | Small Craft Advisory | LOT | 37 hr | |
| Aug 28, 7:11 AM CDT | Special Weather Statement | LOT | Lake | 34 min |
| Aug 28, 9:08 AM CDT | Flash Flood Watch | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 20 hr |
| Aug 28, 12:14 PM CDT | Mesoscale Discussion | SPC | Jo Daviess | 2 hr |
| Aug 28, 1:00 PM CDT | Heat Advisory | LOT | Ford, Iroquois, Kankakee, Livingston | 6 hr |
| Aug 28, 1:30 PM CDT | Special Weather Statement | DVN | Mercer | 30 min |
| Aug 28, 1:50 PM CDT | Special Weather Statement | DVN | Rock Island | 25 min |
| Aug 28, 2:16 PM CDT | Special Weather Statement | DVN | Rock Island | 59 min |
| Aug 28, 2:57 PM CDT | Special Weather Statement | DVN | Bureau | 63 min |
| Aug 28, 3:42 PM CDT | Special Weather Statement | LOT | Lee | 18 min |
| Aug 28, 3:42 PM CDT | Mesoscale Discussion | SPC | Bureau, Cook, DeKalb, DuPage, Grundy, Kane and 11 more | 93 min |
| Aug 28, 4:00 PM CDT | Special Weather Statement | LOT | LaSalle | 15 min |
| Aug 28, 5:06 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bureau, Carroll, Fulton, Hancock, Henderson and 17 more | 6 hr |
| Aug 28, 5:18 PM CDT | Special Weather Statement | LOT | DuPage | 27 min |
| Aug 28, 5:23 PM CDT | Special Marine Warning | LOT | 82 min | |
| Aug 28, 5:59 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 61 min |
| Aug 28, 6:01 PM CDT | Special Marine Warning | LOT | 44 min | |
| Aug 28, 6:18 PM CDT | Severe Thunderstorm Warning | DVN | Mercer | 42 min |
| Aug 28, 6:41 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Rock Island, Whiteside | 64 min |
| Aug 28, 6:45 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Mercer, Rock Island | 60 min |
| Aug 28, 7:00 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Whiteside | 60 min |
| Aug 28, 7:05 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 23 more | 55 min |
| Aug 28, 7:35 PM CDT | Special Weather Statement | ILX | Stark | 55 min |
| Aug 28, 7:37 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 9 more | 4 hr |
| Aug 28, 7:38 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Carroll, Henry, Whiteside | 52 min |
| Aug 28, 7:45 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle, Lee, Ogle | 60 min |
| Aug 28, 7:53 PM CDT | Tornado Warning | DVN | Carroll | 22 min |
| Aug 28, 8:04 PM CDT | Flash Flood Watch | LOT | Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 6 more | 8 hr |
| Aug 28, 8:29 PM CDT | Special Weather Statement | LOT | Boone, Winnebago | 46 min |
| Aug 28, 8:39 PM CDT | Special Weather Statement | LOT | DeKalb, Grundy, Kane, Kendall, LaSalle | 66 min |
| Aug 28, 8:50 PM CDT | Severe Thunderstorm Warning | DVN | Hancock, Henderson, McDonough, Warren | 40 min |
| Aug 28, 8:58 PM CDT | Areal Flood Advisory | LOT | Boone, Winnebago | 3 hr |
| Aug 28, 9:10 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Mercer | 65 min |
| Aug 28, 9:13 PM CDT | Special Weather Statement | LSX | Adams | 47 min |
| Aug 28, 9:18 PM CDT | Severe Thunderstorm Warning | LOT | DuPage, Kane, Kendall, Will | 42 min |
| Aug 28, 9:19 PM CDT | Areal Flood Advisory | LOT | Cook, DuPage, Kane, Kendall, Lake, McHenry and 1 more | 3 hr |
| Aug 28, 9:20 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox, Peoria, Stark | 40 min |
| Aug 28, 9:20 PM CDT | Special Marine Warning | LOT | 115 min | |
| Aug 28, 9:26 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Fulton, Mason, Schuyler | 49 min |
| Aug 28, 9:29 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kane | 61 min |
| Aug 28, 9:54 PM CDT | Mesoscale Discussion | SPC | Brown, Cass, Cook, DeWitt, DuPage, Ford and 24 more | 66 min |
| Aug 28, 10:00 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Mason, Peoria, Tazewell | 45 min |
| Aug 28, 10:06 PM CDT | Special Weather Statement | LOT | Kankakee | 54 min |
| Aug 29, 12:39 AM CDT | Special Weather Statement | ILX | Tazewell | 36 min |
| Aug 29, 1:26 AM CDT | Special Weather Statement | DVN | McDonough | 49 min |
| Aug 29, 1:43 AM CDT | Flash Flood Warning | ILX | Peoria, Tazewell, Woodford | 6 hr |
| Aug 29, 2:21 AM CDT | Special Weather Statement | DVN | Hancock | 39 min |
| Aug 29, 2:56 AM CDT | Special Weather Statement | LSX | Pike | 49 min |
| Aug 29, 3:20 AM CDT | Small Craft Advisory | LOT | 24 hr | |
| Aug 29, 3:36 AM CDT | Special Weather Statement | ILX | Morgan, Scott | 39 min |
| Aug 29, 4:23 AM CDT | Special Weather Statement | LSX | Jersey, Madison | 52 min |
| Aug 29, 5:40 AM CDT | Special Marine Warning | LOT | 35 min | |
| Aug 29, 5:56 AM CDT | Special Weather Statement | LOT | Ford, Grundy, Iroquois, Kankakee, Kendall, LaSalle and 2 more | 64 min |
| Aug 31, 6:35 PM CDT | Areal Flood Advisory | LOT | Grundy, Kankakee, Livingston, Will | 3 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 | 53 |
| Tornado Warning | 5 |
| Severe Thunderstorm Watch | 5 |
| Mesoscale Discussion | 17 |
| Special Weather Statement | 99 |
| Flooding | |
| Flash Flood Warning | 8 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 17 |
| River Flood Advisory | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 13 |
| Coast and beach | |
| Beach Hazards Statement | 2 |
| Marine | |
| Gale Warning | 1 |
| Special Marine Warning | 9 |
| Marine Dense Fog Advisory | 1 |
| Small Craft Advisory | 6 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- DuPage County24
- Winnebago County23
- Kane County20
- Stephenson County20
- Ogle County17
- Jo Daviess County16
- Iroquois County16
- Boone County16
- LaSalle County16
- Vermilion County15
- Kankakee County15
- DeKalb County15
- Tazewell County15
- Rock Island County14
- Cook County14
- Lake County14
- Lee County14
- Grundy County14
- Kendall County14
- Carroll County13
- McHenry County13
- Whiteside County13
- Champaign County13
- Ford County13
- Fulton County13
- Peoria County13
- Will County12
- Livingston County12
- Mercer County12
- Sangamon County11
- Massac County11
- Pulaski County11
- Madison County11
- Mason County11
- Menard County11
- Woodford County11
- Alexander County10
- Cass County10
- Henry County10
- Bureau County10
62 more counties
- McDonough County10
- Putnam County10
- Stark County10
- Union County9
- Logan County9
- Schuyler County9
- Moultrie County8
- Franklin County8
- Gallatin County8
- Jefferson County8
- Saint Clair County8
- McLean County8
- Hancock County8
- Warren County8
- Knox County8
- Marshall County8
- Christian County7
- Morgan County7
- Shelby County7
- Johnson County7
- Pope County7
- Saline County7
- Wayne County7
- Williamson County7
- Marion County7
- Perry County7
- DeWitt County7
- Macon County7
- Montgomery County7
- Hamilton County6
- Hardin County6
- Monroe County6
- Jackson County6
- Randolph County6
- Washington County6
- Jersey County6
- Fayette County6
- Henderson County6
- Clay County5
- Douglas County5
- Lawrence County5
- Edwards County5
- Wabash County5
- Piatt County5
- Bond County5
- Calhoun County5
- Greene County5
- Pike County5
- Clinton County5
- Clark County4
- Coles County4
- Cumberland County4
- Effingham County4
- White County4
- Brown County4
- Macoupin County4
- Scott County4
- Adams County4
- Crawford County3
- Edgar County3
- Jasper County3
- Richland County3
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.