Alert archive / Iowa / Severe Thunderstorm Warnings / 1999
Severe Thunderstorm Warnings in Iowa, April 1999
32 severe thunderstorm warnings in April 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 April 1999. Tap one for its archive.
- Severe Thunderstorm Warnings
- 32
- Busiest day
- April 8, 199923 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 |
|---|---|---|---|---|
| Apr 2, 10:22 PM CST | Severe Thunderstorm Warning | ARX | Floyd | 33 min |
| Apr 2, 10:55 PM CST | Severe Thunderstorm Warning | ARX | Chickasaw | 45 min |
| Apr 3, 2:00 AM CST | Severe Thunderstorm Warning | DVN | Buchanan, Delaware, Linn | 35 min |
| Apr 3, 3:12 PM CST | Severe Thunderstorm Warning | DVN | Iowa, Keokuk | 48 min |
| Apr 5, 8:59 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Jones, Muscatine | 61 min |
| Apr 8, 6:20 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery | 50 min |
| Apr 8, 7:36 AM CDT | Severe Thunderstorm Warning | DMX | Adair | 34 min |
| Apr 8, 7:47 AM CDT | Severe Thunderstorm Warning | DMX | Madison | 33 min |
| Apr 8, 8:37 AM CDT | Severe Thunderstorm Warning | DMX | Warren | 33 min |
| Apr 8, 9:41 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 49 min |
| Apr 8, 10:10 AM CDT | Severe Thunderstorm Warning | DVN | Keokuk | 30 min |
| Apr 8, 10:23 AM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 32 min |
| Apr 8, 10:31 AM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 49 min |
| Apr 8, 11:03 AM CDT | Severe Thunderstorm Warning | OAX | Shelby | 37 min |
| Apr 8, 11:27 AM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 33 min |
| Apr 8, 11:43 AM CDT | Severe Thunderstorm Warning | DMX | Adair | 32 min |
| Apr 8, 12:02 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 33 min |
| Apr 8, 12:05 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 35 min |
| Apr 8, 12:14 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 31 min |
| Apr 8, 12:39 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 36 min |
| Apr 8, 12:48 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 47 min |
| Apr 8, 1:16 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Story | 34 min |
| Apr 8, 1:48 PM CDT | Severe Thunderstorm Warning | DMX | Story | 32 min |
| Apr 8, 2:10 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 50 min |
| Apr 8, 2:57 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin | 33 min |
| Apr 8, 3:21 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 29 min |
| Apr 8, 3:26 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 34 min |
| Apr 8, 3:32 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 48 min |
| Apr 10, 11:27 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 33 min |
| Apr 21, 3:17 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 28 min |
| Apr 21, 4:42 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 33 min |
| Apr 21, 11:12 PM CDT | Severe Thunderstorm Warning | DMX | Clarke | 48 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Harrison County3
- Ida County3
- Keokuk County2
- Mills County2
- Adair County2
- Monona County2
- Woodbury County2
- Shelby County2
- Boone County2
- Story County2
- Floyd County1
- Chickasaw County1
- Buchanan County1
- Delaware County1
- Linn County1
- Iowa County1
- Cedar County1
- Jones County1
- Muscatine County1
- Fremont County1
- Montgomery County1
- Madison County1
- Warren County1
- Pottawattamie County1
- Greene County1
- Dallas County1
- Marshall County1
- Grundy County1
- Hardin County1
- Audubon County1
- Cass County1
- Cerro Gordo County1
- Hamilton County1
- Clarke 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. Warning verification from the Mesonet's Cow. Rebuilt daily.