Alert archive / Illinois / Boone County
Weather alerts in Boone County, Illinois, 1999
15 weather alerts in 1999, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Boone County and its neighbors
Each county as a circle sized by its count in 1999. Tap one for its archive.
- Alerts
- 15
- Warnings
- 7
- Watches
- 8
- Advisories
- 0
- Busiest month
- June6 alerts
- Busiest day
- June 10, 19993 alerts
Over time
By month
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 | Lasted |
|---|---|---|---|
| Feb 11, 1:00 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
| Feb 11, 2:36 PM CST | Severe Thunderstorm Warning | LOT | 39 min |
| May 16, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 16, 6:28 PM CDT | Severe Thunderstorm Warning | LOT | 32 min |
| May 16, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 1, 7:09 PM CDT | Severe Thunderstorm Warning | LOT | 51 min |
| Jun 6, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 10, 3:45 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 10, 4:20 PM CDT | Severe Thunderstorm Warning | LOT | 30 min |
| Jun 10, 5:46 PM CDT | Severe Thunderstorm Warning | LOT | 44 min |
| Jun 11, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 23, 5:08 PM CDT | Severe Thunderstorm Warning | LOT | 52 min |
| Aug 23, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 24, 8:21 AM CDT | Flash Flood Warning | LOT | 5 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 | 6 |
| Severe Thunderstorm Watch | 8 |
| Flooding | |
| Flash Flood Warning | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe 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. Warning verification from the Mesonet's Cow. Rebuilt daily.