Alert archive / Illinois / 2021
Weather alerts in Illinois, February 2021
108 weather alerts in February 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 February 2021. Tap one for its archive.
- Alerts
- 108
- Warnings
- 29
- Watches
- 9
- Advisories
- 66
- Busiest day
- February 28, 202121 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 |
|---|---|---|---|---|
| Feb 2, 2:51 PM CST | Dense Fog Advisory | LSX | Adams, Brown, Pike | 20 hr |
| Feb 3, 1:04 AM CST | Dense Fog Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 5 more | 10 hr |
| Feb 3, 3:03 AM CST | Winter Storm Watch | LOT | Boone, Lee, Ogle, Winnebago | 11 hr |
| Feb 3, 4:01 AM CST | Winter Storm Watch | DVN | Bureau, Carroll, Henry, Jo Daviess, Mercer, Rock Island and 2 more | 11 hr |
| Feb 3, 4:01 AM CST | Winter Weather Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 56 hr |
| Feb 3, 5:47 AM CST | Dense Fog Advisory | LOT | Boone, DeKalb, Grundy, Kankakee, LaSalle, Lee and 4 more | 5 hr |
| Feb 3, 6:27 AM CST | Gale Watch | LOT | 9 hr | |
| Feb 3, 6:27 AM CST | Small Craft Advisory | LOT | 36 hr | |
| Feb 3, 2:29 PM CST | Winter Storm Warning | LOT | Boone, Lee, Ogle, Winnebago | 36 hr |
| Feb 3, 2:29 PM CST | Winter Weather Advisory | LOT | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 10 more | 46 hr |
| Feb 3, 2:56 PM CST | Winter Storm Warning | DVN | Bureau, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more | 36 hr |
| Feb 3, 3:04 PM CST | Gale Warning | LOT | 51 hr | |
| Feb 3, 4:03 PM CST | Winter Weather Advisory | ILX | Fulton, Knox, McLean, Marshall, Peoria, Stark and 2 more | 38 hr |
| Feb 4, 2:32 PM CST | Heavy Freezing Spray Warning | LOT | 42 hr | |
| Feb 4, 7:32 PM CST | Wind Advisory | ILX | Champaign, Clark, Coles, Cumberland, DeWitt, Douglas and 6 more | 4 hr |
| Feb 4, 7:36 PM CST | Wind Advisory | LOT | Ford, Iroquois | 4 hr |
| Feb 5, 1:38 PM CST | Winter Weather Advisory | DVN | Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 2 more | 29 hr |
| Feb 5, 2:01 PM CST | Wind Chill Advisory | ILX | Cass, Champaign, Christian, Coles, DeWitt, Douglas and 21 more | 45 hr |
| Feb 5, 2:01 PM CST | Winter Weather Advisory | ILX | Cass, Champaign, Christian, Coles, DeWitt, Douglas and 21 more | 33 hr |
| Feb 5, 2:19 PM CST | Winter Weather Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 8 more | 31 hr |
| Feb 5, 2:24 PM CST | Winter Weather Advisory | LOT | Cook, DeKalb, DuPage, Ford, Grundy, Iroquois and 8 more | 31 hr |
| Feb 5, 5:54 PM CST | Small Craft Advisory | LOT | 15 hr | |
| Feb 6, 12:51 AM CST | Wind Chill Advisory | DVN | Carroll, Jo Daviess, Stephenson | 9 hr |
| Feb 6, 3:34 AM CST | Wind Chill Advisory | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 32 hr |
| Feb 6, 3:47 AM CST | Wind Chill Warning | DVN | Carroll, Jo Daviess, Rock Island, Stephenson, Whiteside | 32 hr |
| Feb 6, 3:47 AM CST | Wind Chill Advisory | DVN | Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 4 more | 32 hr |
| Feb 6, 4:27 AM CST | Wind Chill Advisory | LSX | Adams, Brown, Greene, Macoupin, Montgomery, Pike | 32 hr |
| Feb 6, 9:23 AM CST | Winter Weather Advisory | DVN | Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 4 more | 10 hr |
| Feb 6, 9:30 AM CST | Small Craft Advisory | LOT | 25 hr | |
| Feb 8, 3:54 AM CST | Winter Weather Advisory | PAH | Edwards, Franklin, Gallatin, Hamilton, Jackson, Jefferson and 7 more | 26 hr |
| Feb 8, 9:18 AM CST | Winter Weather Advisory | LSX | Bond, Calhoun, Clinton, Fayette, Jersey, Madison and 5 more | 19 hr |
| Feb 8, 11:03 AM CST | Winter Weather Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, McDonough and 4 more | 12 hr |
| Feb 8, 11:13 AM CST | Winter Weather Advisory | LOT | Cook, DeKalb, DuPage, Grundy, Kane, Kendall and 4 more | 16 hr |
| Feb 8, 1:06 PM CST | Winter Weather Advisory | ILX | Clay, Crawford, Jasper, Lawrence, Richland | 17 hr |
| Feb 8, 2:10 PM CST | Wind Chill Advisory | ILX | Knox, Marshall, Stark | 19 hr |
| Feb 8, 2:47 PM CST | Winter Storm Watch | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 24 hr |
| Feb 8, 2:48 PM CST | Wind Chill Advisory | DVN | Bureau, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more | 19 hr |
| Feb 8, 3:10 PM CST | Wind Chill Advisory | LOT | Boone, DeKalb, Kane, Kendall, LaSalle, Lee and 3 more | 19 hr |
| Feb 9, 4:02 AM CST | Winter Weather Advisory | LSX | Bond, Calhoun, Clinton, Jersey, Madison, Marion and 4 more | 38 hr |
| Feb 9, 2:56 PM CST | Winter Weather Advisory | ILX | Clay, Lawrence, Richland | 31 hr |
| Feb 9, 3:10 PM CST | Ice Storm Warning | PAH | Alexander, Hardin, Massac, Pope, Pulaski | 44 hr |
| Feb 9, 3:10 PM CST | Winter Weather Advisory | PAH | Edwards, Franklin, Gallatin, Hamilton, Jackson, Jefferson and 8 more | 41 hr |
| Feb 10, 11:18 AM CST | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more | 4 hr |
| Feb 10, 2:30 PM CST | Wind Chill Advisory | DVN | Carroll, Jo Daviess, Rock Island, Stephenson, Whiteside | 20 hr |
| Feb 11, 12:35 PM CST | Wind Chill Advisory | LSX | Adams, Brown, Pike | 23 hr |
| Feb 11, 4:10 PM CST | Winter Weather Advisory | LOT | Cook, DuPage, Lake | 12 hr |
| Feb 11, 5:07 PM CST | Wind Chill Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 43 hr |
| Feb 12, 4:10 AM CST | Wind Chill Advisory | LSX | Adams, Brown, Calhoun, Greene, Jersey, Pike | 38 hr |
| Feb 12, 2:09 PM CST | Winter Storm Watch | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 37 hr |
| Feb 12, 3:03 PM CST | Wind Chill Advisory | ILX | Cass, Fulton, Knox, Marshall, Mason, Morgan and 6 more | 21 hr |
| Feb 12, 3:03 PM CST | Winter Storm Watch | ILX | Clark, Clay, Crawford, Edgar, Jasper, Lawrence and 1 more | 36 hr |
| Feb 13, 3:15 AM CST | Wind Chill Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 57 hr |
| Feb 13, 3:24 AM CST | Wind Chill Warning | LSX | Adams, Brown, Pike | 3 days |
| Feb 13, 3:24 AM CST | Wind Chill Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 3 days |
| Feb 13, 3:33 AM CST | Wind Chill Warning | LOT | Boone, DeKalb, Grundy, Kane, Kendall, LaSalle and 5 more | 31 hr |
| Feb 13, 3:33 AM CST | Wind Chill Advisory | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 56 hr |
| Feb 13, 3:37 AM CST | Wind Chill Warning | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 56 hr |
| Feb 13, 3:37 AM CST | Wind Chill Advisory | DVN | Bureau, Henderson, Henry, McDonough, Mercer, Putnam and 1 more | 17 hr |
| Feb 13, 12:55 PM CST | Wind Chill Advisory | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Jackson and 10 more | 23 hr |
| Feb 13, 2:40 PM CST | Winter Weather Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 56 hr |
| Feb 13, 3:10 PM CST | Winter Weather Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 26 more | 60 hr |
| Feb 13, 8:35 PM CST | Wind Chill Warning | ILX | Cass, DeWitt, Fulton, Knox, Logan, McLean and 11 more | 39 hr |
| Feb 14, 2:38 AM CST | Winter Storm Warning | ILX | Champaign, Christian, Clark, Clay, Coles, Crawford and 19 more | 48 hr |
| Feb 14, 3:00 AM CST | Winter Storm Warning | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 43 hr |
| Feb 14, 3:59 AM CST | Winter Storm Watch | LOT | Cook | 10 hr |
| Feb 14, 3:59 AM CST | Winter Weather Advisory | LOT | Ford, Iroquois, Kankakee, Will | 10 hr |
| Feb 14, 1:43 PM CST | Winter Weather Advisory | DVN | Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 4 more | 40 hr |
| Feb 14, 2:19 PM CST | Winter Storm Warning | LOT | Cook, DuPage, Ford, Grundy, Iroquois, Kankakee and 4 more | 49 hr |
| Feb 14, 2:19 PM CST | Winter Weather Advisory | LOT | Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 8 more | 43 hr |
| Feb 14, 2:44 PM CST | Winter Storm Warning | LSX | Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more | 31 hr |
| Feb 15, 12:29 AM CST | Wind Chill Advisory | DVN | Carroll, Jo Daviess, Stephenson, Whiteside | 12 hr |
| Feb 15, 5:57 AM CST | Mesoscale Discussion | SPC | Alexander, Massac, Pope, Pulaski | 6 hr |
| Feb 15, 10:44 AM CST | Mesoscale Discussion | SPC | Alexander, Bond, Clark, Clay, Clinton, Coles and 37 more | 6 hr |
| Feb 15, 2:52 PM CST | Mesoscale Discussion | SPC | Brown, Bureau, Calhoun, Cass, Champaign, Christian and 36 more | 6 hr |
| Feb 16, 3:26 AM CST | Winter Weather Advisory | LSX | Calhoun, Clinton, Jersey, Madison, Monroe, Randolph and 2 more | 39 hr |
| Feb 16, 4:35 AM CST | Winter Weather Advisory | PAH | Alexander, Edwards, Gallatin, Hamilton, Hardin, Johnson and 8 more | 53 hr |
| Feb 16, 3:20 PM CST | Winter Storm Watch | PAH | Alexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more | 13 hr |
| Feb 20, 2:35 PM CST | Winter Weather Advisory | DVN | Carroll, Henry, Jo Daviess, Mercer, Rock Island, Stephenson and 1 more | 30 hr |
| Feb 20, 2:44 PM CST | Small Craft Advisory | LOT | 60 hr | |
| Feb 23, 7:14 PM CST | River Flood Warning | ILX | Clay, Richland | 3 days |
| Feb 24, 3:15 PM CST | Small Craft Advisory | LOT | 12 hr | |
| Feb 26, 1:19 AM CST | Dense Fog Advisory | DVN | Jo Daviess | 4 hr |
| Feb 26, 1:57 PM CST | Flood Watch | PAH | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 8 more | 58 hr |
| Feb 27, 5:30 AM CST | Dense Fog Advisory | LOT | Cook, DeKalb, DuPage, Ford, Grundy, Iroquois and 6 more | 6 hr |
| Feb 27, 7:16 AM CST | Marine Dense Fog Advisory | LOT | 3 hr | |
| Feb 27, 3:01 PM CST | Small Craft Advisory | LOT | 51 hr | |
| Feb 27, 5:52 PM CST | River Flood Warning | IND | Crawford, Lawrence | 8 days |
| Feb 28, 4:12 AM CST | Areal Flood Advisory | PAH | Alexander, Gallatin, Johnson, Pulaski, Saline, Union and 1 more | 5 hr |
| Feb 28, 4:18 AM CST | River Flood Warning | ILX | Clay, Richland | 7 days |
| Feb 28, 5:16 AM CST | Areal Flood Advisory | PAH | Hamilton, White | 5 hr |
| Feb 28, 6:13 AM CST | Dense Fog Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 6 hr |
| Feb 28, 6:29 AM CST | Dense Fog Advisory | LOT | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 9 more | 6 hr |
| Feb 28, 6:38 AM CST | Marine Dense Fog Advisory | LOT | 8 hr | |
| Feb 28, 6:57 AM CST | Dense Fog Advisory | ILX | Fulton, Knox, Marshall, Peoria, Schuyler, Stark | 3 hr |
| Feb 28, 7:01 AM CST | Areal Flood Advisory | PAH | Edwards, Wabash | 3 hr |
| Feb 28, 8:48 AM CST | River Flood Warning | PAH | Gallatin, Wayne, White | 33 days |
| Feb 28, 10:01 AM CST | River Flood Warning | ILX | Lawrence | 6 days |
| Feb 28, 10:14 AM CST | River Flood Warning | PAH | Gallatin, Wabash, White | 10 days |
| Feb 28, 10:19 AM CST | River Flood Warning | IND | Crawford, Lawrence | 8 days |
| Feb 28, 10:19 AM CST | River Flood Warning | IND | Clark, Crawford | 7 days |
| Feb 28, 10:20 AM CST | River Flood Warning | PAH | Jackson | 5 days |
| Feb 28, 11:22 AM CST | River Flood Warning | PAH | Gallatin, Hardin | 17 days |
| Feb 28, 11:22 AM CST | River Flood Warning | PAH | Pulaski | 40 days |
| Feb 28, 11:22 AM CST | River Flood Warning | PAH | Alexander, Pulaski | 41 days |
| Feb 28, 2:27 PM CST | River Flood Warning | LSX | Fayette | 68 hr |
| Feb 28, 3:21 PM CST | River Flood Warning | IND | Lawrence, Wabash | 9 days |
| Feb 28, 3:21 PM CST | River Flood Warning | IND | Edwards, Gallatin, Wabash, White | 9 days |
| Feb 28, 4:25 PM CST | River Flood Advisory | LOT | LaSalle | 61 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 | |
| Mesoscale Discussion | 4 |
| Flooding | |
| River Flood Warning | 15 |
| Flood Watch | 1 |
| Areal Flood Advisory | 3 |
| River Flood Advisory | 1 |
| Winter | |
| Ice Storm Warning | 1 |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 7 |
| Winter Weather Advisory | 25 |
| Cold | |
| Wind Chill Warning | 5 |
| Wind Chill Advisory | 19 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
| Marine | |
| Gale Warning | 1 |
| Heavy Freezing Spray Warning | 1 |
| Gale Watch | 1 |
| Marine Dense Fog Advisory | 2 |
| Small Craft Advisory | 6 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Whiteside County16
- Bureau County15
- Henry County15
- Rock Island County15
- Gallatin County15
- Carroll County14
- Jo Daviess County14
- Mercer County14
- Putnam County14
- White County14
- Pulaski County14
- Henderson County13
- Stephenson County13
- LaSalle County13
- Wabash County13
- Alexander County13
- Lee County12
- Ogle County12
- Warren County12
- Grundy County12
- Will County12
- Kendall County12
- Union County12
- McDonough County11
- DeKalb County11
- Cook County11
- DuPage County11
- Kane County11
- Edwards County11
- Hamilton County11
- Saline County11
- Williamson County11
- Lawrence County11
- Johnson County11
- Hancock County10
- Boone County10
- Winnebago County10
- Kankakee County10
- Livingston County10
- Marshall County10
62 more counties
- Stark County10
- Jackson County10
- Hardin County10
- Massac County10
- Pope County10
- Brown County9
- Pike County9
- Fulton County9
- Knox County9
- Peoria County9
- Calhoun County9
- Jersey County9
- Franklin County9
- Wayne County9
- Clay County9
- Adams County8
- Lake County8
- McLean County8
- Tazewell County8
- Woodford County8
- DeWitt County8
- Edgar County8
- Vermilion County8
- Ford County8
- Iroquois County8
- Morgan County8
- Schuyler County8
- Scott County8
- Clinton County8
- Madison County8
- Monroe County8
- Saint Clair County8
- Jefferson County8
- Perry County8
- Crawford County8
- Richland County8
- McHenry County7
- Champaign County7
- Clark County7
- Coles County7
- Douglas County7
- Macon County7
- Moultrie County7
- Piatt County7
- Shelby County7
- Cass County7
- Logan County7
- Mason County7
- Menard County7
- Sangamon County7
- Bond County7
- Fayette County7
- Greene County7
- Randolph County7
- Washington County7
- Christian County6
- Macoupin County6
- Montgomery County6
- Marion County6
- Jasper County6
- Cumberland County5
- Effingham County4
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. Rebuilt daily.