Alert archive / Iowa / 1999
Weather alerts in Iowa, August 1999
35 weather alerts in August 1999, 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 1999. Tap one for its archive.
- Alerts
- 35
- Warnings
- 32
- Watches
- 3
- Advisories
- 0
- Busiest day
- August 7, 199911 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 6, 10:49 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 61 min |
| Aug 7, 12:03 AM CDT | Flash Flood Warning | OAX | Harrison | 6 hr |
| Aug 7, 12:45 AM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 50 min |
| Aug 7, 1:34 AM CDT | Severe Thunderstorm Warning | OAX | Mills | 36 min |
| Aug 7, 1:38 AM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 52 min |
| Aug 7, 1:50 AM CDT | Flash Flood Warning | OAX | Pottawattamie | 6 hr |
| Aug 7, 3:25 AM CDT | Flash Flood Warning | OAX | Mills, Montgomery | 6 hr |
| Aug 7, 4:45 AM CDT | Flash Flood Warning | DMX | Cass | 3 hr |
| Aug 7, 5:06 AM CDT | Flash Flood Warning | OAX | Harrison | 5 hr |
| Aug 7, 7:32 AM CDT | Flash Flood Warning | OAX | Pottawattamie | 3 hr |
| Aug 7, 8:42 AM CDT | Flash Flood Warning | OAX | Mills, Montgomery | 108 min |
| Aug 9, 11:57 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 33 min |
| Aug 9, 6:30 PM CDT | Tornado Watch | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 14 more | 6 hr |
| Aug 9, 8:42 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago | 63 min |
| Aug 9, 9:00 PM CDT | Tornado Warning | DMX | Winnebago, Worth | 35 min |
| Aug 9, 9:24 PM CDT | Tornado Warning | DMX | Cerro Gordo | 46 min |
| Aug 9, 9:58 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 32 min |
| Aug 9, 10:10 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 35 min |
| Aug 9, 10:40 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 35 min |
| Aug 11, 10:23 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 32 min |
| Aug 12, 8:01 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 54 min |
| Aug 12, 8:35 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 40 min |
| Aug 12, 10:31 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 29 min |
| Aug 15, 10:09 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola | 31 min |
| Aug 15, 10:40 AM CDT | Severe Thunderstorm Warning | FSD | Osceola | 30 min |
| Aug 18, 12:15 AM CDT | Severe Thunderstorm Watch | SPC | Fremont, Mills, Montgomery, Page, Taylor | 5 hr |
| Aug 23, 11:04 AM CDT | Severe Thunderstorm Warning | ARX | Fayette | 61 min |
| Aug 23, 1:08 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 47 min |
| Aug 23, 1:37 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 63 min |
| Aug 23, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Cedar, Clinton, Des Moines, Henry, Jackson, Jefferson and 8 more | 6 hr |
| Aug 23, 3:15 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine | 50 min |
| Aug 23, 3:49 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 46 min |
| Aug 23, 6:20 PM CDT | Tornado Warning | ARX | Winneshiek | 55 min |
| Aug 23, 7:58 PM CDT | Tornado Warning | ARX | Clayton | 42 min |
| Aug 29, 8:30 PM CDT | Flash Flood Warning | FSD | Woodbury | 2 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 | 20 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 1 |
| Flooding | |
| Flash Flood Warning | 8 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Mills County5
- Montgomery County5
- Cerro Gordo County4
- Dubuque County3
- Fayette County3
- Winnebago County3
- Harrison County2
- Page County2
- Pottawattamie County2
- Allamakee County2
- Butler County2
- Clayton County2
- Delaware County2
- Floyd County2
- Jones County2
- Winneshiek County2
- Worth County2
- Jackson County2
- Osceola County2
- Muscatine County2
- Scott County2
- Cass County1
- Black Hawk County1
- Bremer County1
- Buchanan County1
- Chickasaw County1
- Hancock County1
- Howard County1
- Kossuth County1
- Mitchell County1
- Shelby County1
- Lyon County1
- Fremont County1
- Taylor County1
- Cedar County1
- Clinton County1
- Des Moines County1
- Henry County1
- Jefferson County1
- Johnson County1
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.