Alert archive / Iowa / Severe Thunderstorm Warnings / 1991
Severe Thunderstorm Warnings in Iowa, September 1991
24 severe thunderstorm warnings in September 1991. 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 September 1991. Tap one for its archive.
- Severe Thunderstorm Warnings
- 24
- Busiest day
- September 12, 199117 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 |
|---|---|---|---|---|
| Sep 9, 4:28 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk | 47 min |
| Sep 9, 5:08 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Polk, Warren | 37 min |
| Sep 9, 6:14 PM CDT | Severe Thunderstorm Warning | DMX | Allamakee | 31 min |
| Sep 9, 6:24 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 101 min |
| Sep 9, 6:24 PM CDT | Severe Thunderstorm Warning | DVN | Clayton | 66 min |
| Sep 9, 7:23 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 52 min |
| Sep 9, 8:57 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 28 min |
| Sep 11, 7:41 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Greene | 34 min |
| Sep 11, 8:08 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 52 min |
| Sep 11, 8:08 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 45 min |
| Sep 11, 8:22 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 31 min |
| Sep 11, 8:22 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Story | 53 min |
| Sep 12, 3:03 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 29 min |
| Sep 12, 3:20 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 25 min |
| Sep 12, 3:33 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Tama | 42 min |
| Sep 12, 3:44 PM CDT | Severe Thunderstorm Warning | DMX | Jasper | 31 min |
| Sep 12, 3:53 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 61 min |
| Sep 12, 3:53 PM CDT | Severe Thunderstorm Warning | DMX | Grundy | 31 min |
| Sep 12, 4:41 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 49 min |
| Sep 12, 4:57 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 33 min |
| Sep 12, 5:03 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 57 min |
| Sep 12, 5:07 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 25 min |
| Sep 12, 5:42 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 38 min |
| Sep 12, 6:15 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 40 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Jasper County3
- Polk County3
- Delaware County2
- Scott County2
- Greene County2
- Story County2
- Marshall County2
- Marion County1
- Warren County1
- Allamakee County1
- Clayton County1
- Des Moines County1
- Lee County1
- Carroll County1
- Hamilton County1
- Webster County1
- Boone County1
- Tama County1
- Black Hawk County1
- Grundy County1
- Linn County1
- Jones County1
- Cedar County1
- Jackson County1
- Clinton County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive19901992
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.