Alert archive / Illinois / Severe Thunderstorm Warnings / 1999
Severe Thunderstorm Warnings in Illinois, August 1999
63 severe thunderstorm warnings in August 1999. 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 1999. Tap one for its archive.
- Severe Thunderstorm Warnings
- 63
- Busiest day
- August 13, 199928 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 12, 6:15 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 50 min |
| Aug 12, 6:30 PM CDT | Severe Thunderstorm Warning | LSX | Brown | 45 min |
| Aug 12, 6:37 PM CDT | Severe Thunderstorm Warning | ILX | Schuyler | 53 min |
| Aug 12, 7:17 PM CDT | Severe Thunderstorm Warning | ILX | Fulton | 43 min |
| Aug 12, 7:19 PM CDT | Severe Thunderstorm Warning | LSX | Brown | 26 min |
| Aug 12, 7:20 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Mason | 70 min |
| Aug 12, 7:25 PM CDT | Severe Thunderstorm Warning | ILX | Schuyler | 65 min |
| Aug 12, 7:38 PM CDT | Severe Thunderstorm Warning | ILX | Menard | 52 min |
| Aug 12, 7:46 PM CDT | Severe Thunderstorm Warning | LSX | Brown | 44 min |
| Aug 12, 7:52 PM CDT | Severe Thunderstorm Warning | ILX | Logan | 53 min |
| Aug 12, 8:09 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell | 51 min |
| Aug 12, 8:16 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Scott | 59 min |
| Aug 12, 8:24 PM CDT | Severe Thunderstorm Warning | ILX | Cass | 66 min |
| Aug 12, 8:31 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, McLean | 59 min |
| Aug 12, 8:41 PM CDT | Severe Thunderstorm Warning | ILX | Macon | 64 min |
| Aug 12, 8:55 PM CDT | Severe Thunderstorm Warning | ILX | Menard, Sangamon | 65 min |
| Aug 12, 9:03 PM CDT | Severe Thunderstorm Warning | ILX | Piatt | 42 min |
| Aug 12, 9:16 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Scott | 59 min |
| Aug 12, 9:35 PM CDT | Severe Thunderstorm Warning | ILX | Champaign | 40 min |
| Aug 12, 10:02 PM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 33 min |
| Aug 12, 10:15 PM CDT | Severe Thunderstorm Warning | ILX | Douglas, Vermilion | 60 min |
| Aug 12, 10:15 PM CDT | Severe Thunderstorm Warning | ILX | Moultrie | 60 min |
| Aug 12, 10:17 PM CDT | Severe Thunderstorm Warning | ILX | Champaign | 33 min |
| Aug 12, 10:22 PM CDT | Severe Thunderstorm Warning | ILX | Christian | 63 min |
| Aug 12, 10:34 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Shelby | 61 min |
| Aug 12, 10:34 PM CDT | Severe Thunderstorm Warning | ILX | Edgar | 61 min |
| Aug 12, 10:51 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 49 min |
| Aug 12, 11:00 PM CDT | Severe Thunderstorm Warning | LSX | Jersey | 50 min |
| Aug 12, 11:10 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Cumberland | 60 min |
| Aug 13, 12:19 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 46 min |
| Aug 13, 12:21 AM CDT | Severe Thunderstorm Warning | LSX | Madison | 49 min |
| Aug 18, 9:26 PM CDT | Severe Thunderstorm Warning | DVN | Hancock | 34 min |
| Aug 18, 10:01 PM CDT | Severe Thunderstorm Warning | ILX | Schuyler | 44 min |
| Aug 18, 10:42 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Schuyler | 48 min |
| Aug 18, 11:13 PM CDT | Severe Thunderstorm Warning | LSX | Brown | 47 min |
| Aug 18, 11:25 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan | 50 min |
| Aug 18, 11:46 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 44 min |
| Aug 18, 11:50 PM CDT | Severe Thunderstorm Warning | ILX | Scott | 40 min |
| Aug 19, 12:14 AM CDT | Severe Thunderstorm Warning | ILX | Morgan | 46 min |
| Aug 19, 12:28 AM CDT | Severe Thunderstorm Warning | ILX | Scott | 32 min |
| Aug 19, 12:35 AM CDT | Severe Thunderstorm Warning | LSX | Greene | 40 min |
| Aug 19, 12:54 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 66 min |
| Aug 23, 3:49 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 46 min |
| Aug 23, 4:47 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Henry | 48 min |
| Aug 23, 5:06 PM CDT | Severe Thunderstorm Warning | DVN | Henderson, Warren | 49 min |
| Aug 23, 5:12 PM CDT | Severe Thunderstorm Warning | ILX | Knox | 48 min |
| Aug 23, 5:49 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Peoria | 41 min |
| Aug 23, 6:18 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell | 42 min |
| Aug 23, 6:35 PM CDT | Severe Thunderstorm Warning | ILX | Mason | 40 min |
| Aug 23, 6:45 PM CDT | Severe Thunderstorm Warning | ILX | Logan | 45 min |
| Aug 23, 6:48 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 47 min |
| Aug 23, 6:57 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell | 33 min |
| Aug 23, 6:59 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Menard | 46 min |
| Aug 23, 7:17 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 48 min |
| Aug 23, 7:25 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Sangamon | 65 min |
| Aug 23, 7:36 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Macon | 69 min |
| Aug 23, 7:41 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 49 min |
| Aug 23, 7:53 PM CDT | Severe Thunderstorm Warning | ILX | Christian | 37 min |
| Aug 23, 8:02 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 48 min |
| Aug 23, 8:21 PM CDT | Severe Thunderstorm Warning | LSX | Jersey | 49 min |
| Aug 23, 8:27 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Shelby | 78 min |
| Aug 23, 8:27 PM CDT | Severe Thunderstorm Warning | ILX | Moultrie | 78 min |
| Aug 23, 8:27 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 48 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cass County5
- Brown County4
- Schuyler County4
- Morgan County4
- Scott County4
- Menard County3
- Logan County3
- Tazewell County3
- Sangamon County3
- Christian County3
- Jersey County3
- Pike County3
- Fulton County2
- Mason County2
- DeWitt County2
- Macon County2
- Champaign County2
- Moultrie County2
- Shelby County2
- Calhoun County2
- Greene County2
- Macoupin County2
- Adams County1
- McLean County1
- Piatt County1
- Douglas County1
- Vermilion County1
- Coles County1
- Edgar County1
- Clark County1
- Cumberland County1
- Madison County1
- Hancock County1
- Rock Island County1
- Bureau County1
- Henry County1
- Henderson County1
- Warren County1
- Knox County1
- Peoria County1
1 more counties
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
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.