Alert archive / Iowa / Severe Thunderstorm Warnings / 2009
Severe Thunderstorm Warnings in Iowa, March 2009
21 severe thunderstorm warnings in March 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in March 2009. Tap one for its archive.
- Severe Thunderstorm Warnings
- 21
- Busiest day
- March 23, 20098 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 |
|---|---|---|---|---|
| Mar 7, 1:46 AM CST | Severe Thunderstorm Warning | DVN | Lee, Van Buren | 29 min |
| Mar 7, 2:13 AM CST | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 32 min |
| Mar 7, 2:40 AM CST | Severe Thunderstorm Warning | DVN | Des Moines | 17 min |
| Mar 7, 6:51 PM CST | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Van Buren | 39 min |
| Mar 7, 8:10 PM CST | Severe Thunderstorm Warning | DVN | Jefferson | 35 min |
| Mar 7, 8:34 PM CST | Severe Thunderstorm Warning | DVN | Jefferson, Washington | 23 min |
| Mar 7, 9:31 PM CST | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Van Buren | 44 min |
| Mar 23, 4:53 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 52 min |
| Mar 23, 5:36 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 24 min |
| Mar 23, 5:43 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 17 min |
| Mar 23, 5:44 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 31 min |
| Mar 23, 6:17 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Lyon, O'Brien, Plymouth, Sioux, Woodbury | 43 min |
| Mar 23, 6:18 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 57 min |
| Mar 23, 6:39 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 66 min |
| Mar 23, 6:44 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 46 min |
| Mar 23, 7:19 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 41 min |
| Mar 23, 8:45 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 30 min |
| Mar 23, 9:03 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 30 min |
| Mar 23, 9:07 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison, Union | 23 min |
| Mar 23, 9:29 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie, Madison, Polk | 31 min |
| Mar 23, 9:58 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Madison, Polk, Warren | 32 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Jefferson County4
- Plymouth County4
- Van Buren County3
- Woodbury County3
- Madison County3
- Lee County2
- Des Moines County2
- Henry County2
- Monona County2
- Lyon County2
- O'Brien County2
- Sioux County2
- Dickinson County2
- Adair County2
- Dallas County2
- Polk County2
- Washington County1
- Cherokee County1
- Harrison County1
- Mills County1
- Pottawattamie County1
- Osceola County1
- Montgomery County1
- Page County1
- Clay County1
- Union County1
- Guthrie County1
- Boone County1
- Warren 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.