Alert archive / Illinois / Severe Thunderstorm Warnings / 1987
Severe Thunderstorm Warnings in Illinois, August 1987
37 severe thunderstorm warnings in August 1987. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in August 1987. Tap one for its archive.
- Severe Thunderstorm Warnings
- 37
- Busiest day
- August 3, 198711 severe thunderstorm warnings
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 3, 2:59 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island, Whiteside | 16 min |
| Aug 3, 3:52 PM CDT | Severe Thunderstorm Warning | ILX | Knox, Stark | 68 min |
| Aug 3, 4:27 PM CDT | Severe Thunderstorm Warning | ILX | Boone, Winnebago | 48 min |
| Aug 3, 5:02 PM CDT | Severe Thunderstorm Warning | ILX | Peoria | 58 min |
| Aug 3, 5:15 PM CDT | Severe Thunderstorm Warning | PAH | Hardin | 45 min |
| Aug 3, 5:19 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell, Woodford | 56 min |
| Aug 3, 5:19 PM CDT | Severe Thunderstorm Warning | ILX | Marshall, Putnam | 56 min |
| Aug 3, 5:42 PM CDT | Severe Thunderstorm Warning | ILX | Henderson, McDonough, Warren | 48 min |
| Aug 3, 5:42 PM CDT | Severe Thunderstorm Warning | ILX | Hancock | 48 min |
| Aug 3, 6:35 PM CDT | Severe Thunderstorm Warning | ILX | McDonough | 55 min |
| Aug 3, 6:55 PM CDT | Severe Thunderstorm Warning | ILX | Mason, Tazewell | 65 min |
| Aug 3, 9:45 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 60 min |
| Aug 8, 8:51 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Sangamon | 69 min |
| Aug 8, 9:30 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 60 min |
| Aug 16, 5:17 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 43 min |
| Aug 16, 6:12 PM CDT | Severe Thunderstorm Warning | DVN | Whiteside | 33 min |
| Aug 16, 6:15 PM CDT | Severe Thunderstorm Warning | ILX | Stephenson, Winnebago | 45 min |
| Aug 16, 6:38 PM CDT | Severe Thunderstorm Warning | ILX | Carroll | 52 min |
| Aug 16, 6:48 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 42 min |
| Aug 16, 7:02 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Whiteside | 28 min |
| Aug 16, 7:11 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 49 min |
| Aug 16, 7:48 PM CDT | Severe Thunderstorm Warning | LSX | Brown, Pike | 42 min |
| Aug 16, 8:34 PM CDT | Severe Thunderstorm Warning | LOT | Kane | 56 min |
| Aug 16, 9:17 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Menard, Sangamon | 58 min |
| Aug 16, 9:36 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 54 min |
| Aug 16, 10:06 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Macon | 69 min |
| Aug 16, 10:31 PM CDT | Severe Thunderstorm Warning | ILX | Menard, Sangamon | 59 min |
| Aug 16, 10:40 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Piatt | 65 min |
| Aug 20, 8:18 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 27 min |
| Aug 21, 1:49 AM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 26 min |
| Aug 21, 2:18 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Mercer, Rock Island | 42 min |
| Aug 21, 3:31 AM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 29 min |
| Aug 21, 4:01 AM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 59 min |
| Aug 21, 4:01 AM CDT | Severe Thunderstorm Warning | DVN | Mercer | 59 min |
| Aug 21, 4:57 AM CDT | Severe Thunderstorm Warning | DVN | Henry | 33 min |
| Aug 21, 5:28 AM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 47 min |
| Aug 21, 5:34 AM CDT | Severe Thunderstorm Warning | ILX | Bureau, Knox, Stark | 26 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Rock Island County7
- Whiteside County3
- Sangamon County3
- Henry County3
- Knox County2
- Stark County2
- Winnebago County2
- Tazewell County2
- McDonough County2
- Adams County2
- Menard County2
- Mercer County2
- Boone County1
- Peoria County1
- Hardin County1
- Woodford County1
- Marshall County1
- Putnam County1
- Henderson County1
- Warren County1
- Hancock County1
- Mason County1
- Fayette County1
- Christian County1
- Saint Clair County1
- Jo Daviess County1
- Stephenson County1
- Carroll County1
- Brown County1
- Pike County1
- Kane County1
- Logan County1
- Cook County1
- Will County1
- DeWitt County1
- Macon County1
- Champaign County1
- Piatt County1
- Bureau County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive19861988
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.