Alert archive / North Dakota / Severe Thunderstorm Warnings / 2011
Severe Thunderstorm Warnings in North Dakota, September 2011
20 severe thunderstorm warnings in September 2011. 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 2011. Tap one for its archive.
- Severe Thunderstorm Warnings
- 20
- Busiest day
- September 1, 201120 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 |
|---|---|---|---|---|
| Aug 31, 8:54 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie | 51 min |
| Aug 31, 9:07 PM CDT | Severe Thunderstorm Warning | BIS | Bowman, Slope | 53 min |
| Aug 31, 9:17 PM CDT | Severe Thunderstorm Warning | BIS | Divide, McKenzie, Williams | 58 min |
| Aug 31, 9:39 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Dunn, Stark | 66 min |
| Aug 31, 9:45 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, McKenzie | 45 min |
| Aug 31, 10:01 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Bowman, Hettinger, Slope | 59 min |
| Aug 31, 10:12 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Divide, McKenzie, Mountrail, Williams | 63 min |
| Aug 31, 10:22 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie, Mountrail | 38 min |
| Aug 31, 10:36 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, Grant, Hettinger, Mercer, Morton, Oliver and 1 more | 54 min |
| Aug 31, 10:56 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, Burke, Mountrail, Renville, Ward | 64 min |
| Aug 31, 10:59 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Hettinger | 39 min |
| Aug 31, 11:25 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer, Morton, Oliver | 65 min |
| Aug 31, 11:49 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Kidder, McLean, Morton, Oliver, Sheridan and 1 more | 56 min |
| Sep 1, 12:36 AM CDT | Severe Thunderstorm Warning | BIS | Foster, Kidder, McHenry, Pierce, Sheridan, Wells | 54 min |
| Sep 1, 12:44 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Eddy | 46 min |
| Sep 1, 1:07 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Towner | 53 min |
| Sep 1, 1:23 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Eddy, Nelson, Ramsey, Towner, Walsh | 67 min |
| Sep 1, 1:57 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Pembina | 63 min |
| Sep 1, 2:19 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Nelson, Walsh | 41 min |
| Sep 1, 2:49 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Pembina, Walsh | 56 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- McKenzie County5
- Dunn County3
- Hettinger County3
- Mountrail County3
- Morton County3
- Oliver County3
- Walsh County3
- Bowman County2
- Slope County2
- Divide County2
- Williams County2
- Stark County2
- Burke County2
- Grant County2
- Mercer County2
- McLean County2
- Kidder County2
- Sheridan County2
- Wells County2
- Benson County2
- Eddy County2
- Cavalier County2
- Towner County2
- Nelson County2
- Pembina County2
- Grand Forks County2
- Billings County1
- Adams County1
- Bottineau County1
- Renville County1
- Ward County1
- Burleigh County1
- Foster County1
- McHenry County1
- Pierce County1
- Ramsey County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.