Alert archive / Iowa / Tornado Watches / 2009
Tornado Watches in Iowa, May 2009
2 tornado watches in May 2009. 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 tornado watches reaches back to 1997.
Tornado Watches by county
Each county as a circle sized by its count in May 2009. Tap one for its archive.
- Tornado Watches
- 2
- Busiest day
- May 7, 20091 tornado watches
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 |
|---|---|---|---|---|
| May 7, 1:44 PM CDT | Tornado Watch | SPC | Adams, Appanoose, Clarke, Decatur, Fremont, Mills and 7 more | 6 hr |
| May 13, 2:39 PM CDT | Tornado Watch | SPC | Appanoose, Clarke, Davis, Decatur, Des Moines, Henry and 15 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Appanoose County2
- Clarke County2
- Decatur County2
- Wayne County2
- Adams County1
- Fremont County1
- Mills County1
- Montgomery County1
- Page County1
- Pottawattamie County1
- Ringgold County1
- Taylor County1
- Union County1
- Davis County1
- Des Moines County1
- Henry County1
- Jefferson County1
- Keokuk County1
- Lee County1
- Louisa County1
- Lucas County1
- Mahaska County1
- Marion County1
- Monroe County1
- Muscatine County1
- Scott County1
- Van Buren County1
- Wapello County1
- Warren County1
- Washington County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.