Unexplained boom

An unexplained boom is a very loud noise similar to a sonic boom created by the supersonic flight of an aircraft. However, these booms are unexplained, because, for instance, no supersonic flight was scheduled at the time the boom was heard. A common explanation is that classified flights by military aircraft are responsible, another is of meteorites passing through the atmosphere.
In the United States
Several unexplained booms have been reported by major media outlets in the US.
* Pensacola, Florida January 13, 2003
* Charleston, South Carolina August 1, 2003
* Winston-Salem, North Carolina March 5, 2005
::Bob Dollar of the USGS told the Register that Caltech scientists reviewed seismograms from Tuesday night's event in Orange County. "These data are consistent with a sonic event coming onshore near Dana Point and traveling northward inland," Dollar said. "The energy traveled across our seismic sensor network at the velocity of a compressional wave in air rather than the velocity of a similar wave through the ground, which is much faster," Dollar said.
* Santa Cruz, California 9:15 am Wednesday March 4, 2009
* Westchester County, New York 12:24 am, Saturday March 7, 2009
* Rockland County, New York 5:15 am, Monday March 9, 2009
*Hillsboro, Ohio, 9:00 pm Thursday, March 17, 2010
* Schenectady, New York 11:55 pm, Friday, October 29, 2010
* Wilmington, North Carolina 8 pm, Sunday November 7, 2010
* Carroll County, Georgia 9:45 pm, Friday November 26, 2010
* Lebanon, Missouri 11 am, Tuesday, September 27, 2011
* Ocean Pines, Maryland Friday October 14, 2011
* Wilmington, North Carolina 10 am, Tuesday, February 28, 2012
* Glynn County, Georgia 8:30 am, Tuesday, March 15, 2012
* Clintonville, Wisconsin, 12 am, Monday, March 19, 2012
* San Diego, California, 8:38 am, Friday, April 13, 2012
::A weather forecaster stated that the sound could have been caused by military aircraft performing a maneuver in which chaff was released.
* San Diego, California, 12:45 pm, Friday, June 29, 2012
* Salt Lake City, Utah, 9pm, Tuesday, January 8, 2013
*Evansville, Indiana, 11:30pm, Monday, January 7, 2013
*Evansville, Indiana, 9:30pm, Tuesday, January 8, 2013
*Somerville, Massachusetts, 3:30am, Wednesday, January 9, 2013
*Jamestown, New York Jan 13, 2013
*Morristown, TN, February 12, 2013.
*Bowling Green, KY 21:30, Monday, March 4, 2013
*Chesnee, SC Mar. 4, 2013 approximately 8:00 p.m. and Mar.5,2013 approximately 8:30 p.m. loud explosion like Booms in the area.
*Carbondale, IL Mar. 16, 2013 between 1:00 p.m. and 2:00 p.m. - A "windows-rattling, earthshaking boom" was heard by hundreds of people in Franklin, Hamilton, Saline and Williamson Counties in Illinois.
* Chicago, IL April 3, 2013 approximately 2:00 a.m. - Loud explosion in downtown Chicago
* New Haven and Fairfield counties, Connecticut, April 19, 2013 about 10 p.m. - A long rumbling boom was heard over more than 30 miles of coastal Connecticut It was possibly caused by a fragmenting meteorite.
* Chicago, IL August 22, 2013 approximately 4:30 p.m - Loud, lasting explosion in North Chicago
* Chicago, IL October 1, 2013 approximately 6:30 p.m. - Loud, low frequency humming coming from the sky, Montrose Beach at Lawrence
* Harris County, GA October 7, 2013 approximately 10:15 p.m., 10:35 p.m., and 10:45 p.m. - Loud explosion
* Deerfield, IL November 8, 2013 approximately 6:40pm, booms heard in the sky for five minutes and then traveled eastward. Deerfield police were called.
* Old Mystic, CT November 29, 2013 approximately 9 am- 9:45, 3 booms. Stonington Police were called. (Seismic activity now shows this was caused by an earthquake)
* Springfield, MO, December 15, 2013, approximately 6:00 p.m., loud single, explosive/thunder-like boom heard throughout the city and in surrounding towns.
* Toledo, OH, December 18, 2013, approximately 23:00, Toledo police receive many reports of explosion-like boom that shook homes all over the city.

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