Loud humming triangular craft observed over Western South Dakota moving at high speedOn 25 May 2009 at approximately 2200 hours, a triangular shaped craft was detected moving West to East over various locations in western South Dakota between Highway 44 and Rapid City Regional Airport. One letter written in to the Rapid City Journal described the object as 'making a loud humming noise before accelerating at an immense speed and disappearing out of sight.' Despite an Air Show at Ellsworth AFB during the following weekend, only home-station aircraft, the B-1 Bomber were at the base and none were in flight during this time. The craft was spotted by several eye-witnesses, some of whom detected the same craft at approximately 0430 on Tuesday the 26th of May, 2009.
Top 100 nearest sightings ordered by sighting date (100 miles radius):
| Location | Sighted on | Shape | Duration |
|---|---|---|---|
| Location | Sighted on | Shape | Duration |
| Spearfish, sd | 2020-08-07 | Unknown | 3 minutes |
| Rapid City, South Dakota (United States) | 2020-06-04 | Circle | 05:00:00 |
| Rapid City, South Dakota (United States) | 2019-12-19 | Circle | 00:10:00 |
| Lead, South Dakota (United States) | 2019-11-01 | Triangle | 00:00:08 |
| Newell, South Dakota (United States) | 2019-04-23 | Bullet, Missile | 00:04:10 |
| Custer, South Dakota (United States) | 2018-09-04 | Saturn-like | 02:00:00 |
| Custer, South Dakota (United States) | 2018-09-04 | Saturn-like | 02:00:00 |
| Custer, South Dakota (United States) | 2018-07-08 | Other | |
| Belle Fourche, South Dakota (United States) | 2018-04-30 | Other | 00:11:00 |
| Newell, South Dakota (United States) | 2017-12-13 | Circle | 00:10:00 |
| Newell, South Dakota (United States) | 2017-08-23 | Saturn-like | 00:06:09 |
| Vale, South Dakota (United States) | 2017-06-08 | Unknown | 00:15:00 |
| Hot Springs, SD | 2016-12-10 | Circle | 8 minutes |
| Spearfish, SD | 2016-11-26 | Disk | 30 minutes |
| Sundance, Wyoming (United States) | 2016-11-23 | Sphere | |
| Sturgis, South Dakota (United States) | 2016-11-20 | Star-like | 01:00:00 |
| Rapid City, South Dakota (United States) | 2016-06-16 | Fireball | Undisclosed |
| Rapid City, SD | 2016-06-16 | Sphere | 5 minutes |
| Box Elder, SD | 2016-06-16 | Oval | 2 minutes |
| Rapid City, SD | 2016-05-23 | Circle | 5 seconds |
| Newcastle, Wyoming (United States) | 2016-05-19 | Circle | |
| Spearfish, South Dakota (United States) | 2016-04-12 | Chevron | Undisclosed |
| Rapid City, SD | 2016-02-16 | Unknown | >1 hour |
| Rapid City, South Dakota (United States) | 2016-01-08 | Blimp | 01:10:30 |
| Rapid City, South Dakota (United States) | 2015-12-12 | Circle | Undisclosed |
| Rapid City, South Dakota (United States) | 2015-12-08 | Star-like | Undisclosed |
| Mount Rushmore, South Dakota (United States) | 2015-10-13 | Circle | Undisclosed |
| Deadwood, South Dakota (United States) | 2015-06-21 | Star-like | 00:05:00 |
| Rapid City, South Dakota (United States) | 2015-03-29 | Boomerang | 00:05:00 |
| Mount Rushmore, South Dakota (United States) | 2015-03-16 | cigar shaped | just about two minutes |
| Rapid City, SD | 2014-12-17 | Unknown | 1 hour |
| Rapid City, SD | 2014-09-02 | Formation | 20 seconds |
| Spearfish, SD | 2014-09-02 | Fireball | 1-2 minutes |
| Rapid City, SD | 2014-09-02 | Formation | 20 seconds |
| Spearfish, SD | 2014-09-02 | Fireball | 1-2 minutes |
| Rapid City, SD | 2014-08-16 | Light | 10 minutes |
| Rapid City, SD | 2014-08-16 | Light | 10 minutes |
| Rapid City, SD | 2014-06-29 | Light | 15 minutes |
| Rapid City, SD | 2014-06-29 | Light | 15 minutes |
| Hill City, South Dakota (United States) | 2014-06-20 | Sphere | Undisclosed |
| Rapid City, South Dakota (United States) | 2014-06-05 | Oval | 00:00:03 |
| Box Elder, SD | 2014-06-05 | Light | 30 seconds |
| Rapid City, SD | 2014-06-05 | Sphere | 1 hour 11minutes |
| Box Elder, SD | 2014-06-05 | Light | 30 seconds |
| Rapid City, SD | 2014-06-05 | Sphere | 1 hour 11minutes |
| Spearfish, South Dakota (United States) | 2014-04-20 | N, A | 00:20:00 |
| Rapid City, SD | 2013-12-24 | Cylinder | 40 minutes |
| Rapid City, SD | 2013-11-02 | Other | 30+ minutes |
| Blackhawk, South Dakota (United States) | 2013-10-22 | Boomerang, Chevron, Sphere, Triangle | Undisclosed |
| Spearfish, South Dakota (United States) | 2013-10-01 | Sphere | 00:30:24 |
| Rapid City, SD | 2013-09-21 | Unknown | 30-40 minutes |
| Rapid City, South Dakota (United States) | 2013-07-17 | Star-like | Undisclosed |
| Rapid City, SD | 2013-07-17 | Light | 20 seconds |
| Summerset, SD | 2013-07-04 | Light | 15 seconds |
| Black Hawk, SD | 2013-07-03 | Circle | few seconds |
| Rapid City, South Dakota (United States) | 2013-01-29 | Other | Undisclosed |
| Rapid City, SD | 2012-12-22 | Unknown | 3 minutes |
| Rapid City, SD | 2012-12-15 | Other | 5 minutes |
| Rapid City, SD | 2012-06-09 | Changing | 2 minutes |
| Rapid City, SD | 2012-04-22 | Other | 6 OR 7 SECONDS |
| Rapid City, SD | 2012-02-13 | Triangle | 1 minute |
| Lead, South Dakota (United States) | 2012-02-09 | Circle, Oval, Sphere | Undisclosed |
| Rapid City, South Dakota (United States) | 2011-12-29 | Fireball | Undisclosed |
| Rapid City, SD | 2011-10-26 | Triangle | 5seconds |
| Lead, South Dakota (United States) | 2011-09-28 | Flash, Unknown | Undisclosed |
| Rapid City, SD | 2011-08-13 | Other | 15 seconds |
| Custer, SD | 2011-07-22 | Circle | 5 Minutes |
| Rapid City, South Dakota (United States) | 2010-07-30 | Other | Undisclosed |
| Custer, South Dakota (United States) | 2010-07-30 | Star-like, Other | 00:02:00 |
| Custer, South Dakota (United States) | 2010-07-23 | Star-like, Unknown | 00:05:00 |
| Rapid City, South Dakota (United States) | 2010-05-26 | Other | 00:00:00 |
| Rapid City, SD | 2009-08-22 | Light | 5 mins |
| Keystone, SD | 2009-07-22 | Circle | 45 sec |
| Rapid City, SD | 2009-05-18 | Triangle | 4-5 minutes |
| Rapid City, SD | 2009-05-17 | Unknown | 5 seconds |
| Rapid City, SD | 2009-03-19 | Light | 20 seconds |
| Hot Springs, South Dakota (United States) | 2009-02-05 | Square, Rectagular | 11:30:00 |
| Rapid City, SD | 2008-10-14 | Cigar | ongoing |
| Black Hills, SD | 2008-07-15 | Unknown | approx. 15 min |
| Rapid City, SD | 2007-10-04 | Cigar | 15 seconds |
| Rapid City, South Dakota (United States) | 2007-08-15 | Other | Undisclosed |
| Rapid City, South Dakota (United States) | 2007-03-07 | Circle, Sphere, Triangle, Other | Undisclosed |
| Rapid City, South Dakota (United States) | 2007-01-04 | Cylinder | 00:02:00 |
| Rapid City, SD | 2006-10-30 | Triangle | 10 seconds |
| Spearfish, SD | 2006-10-29 | Chevron | 4 - 5 seconds |
| Deadwood, SD | 2006-05-22 | Disk | instantaneous |
| Rapid City, South Dakota (United States) | 2005-08-20 | Sphere | Undisclosed |
| Sturgis, SD | 2005-08-10 | Flash | 3 minutes |
| Rapid City, SD | 2005-04-20 | Triangle | 1-2 min |
| Rapid City, SD | 2005-02-25 | Light | 3.0 seconds |
| Rapid City/ Box Elder, SD | 2004-11-15 | Triangle | 10 Min |
| Lead, SD | 2004-09-12 | Flash | 30 minutes |
| Sturgis, SD | 2004-06-10 | Unknown | 15 seconds |
| Rapid City, SD | 2004-03-15 | Triangle | 8min |
| Spearfish Canyon, SD | 2004-02-24 | Circle | 15 SECONDS |
| Summerset, South Dakota (United States) | 2003-09-30 | Triangle | Undisclosed |
| Rockerville, SD | 2003-08-18 | Triangle | 5 min. |
| Hot Springs, SD | 2003-04-25 | Light | 30 Min |
| Spearfish, SD | 2002-09-06 | Cigar | 1-2 minutes |
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