UFO sightings by place
UFO sightings in Seine-Maritime: 55 reports
SkyUnknown lists 55 UFO sightings in Seine-Maritime, from 1956 to 2025, drawn from official records: GEIPAN (CNES). The busiest year was 2010, with 6 cases.
Of the 55 cases with a conclusion from their source, 64% are explained (with certainty or probably), 33% lack the data to conclude, and 2 remain unidentified. The most frequent identified causes: sky lanterns (6); balloons (4); aircraft (3).
Most frequently named places: Le Havre (8), Rouen (5), Bois-Guillaume (3), Dieppe (3), and Montivilliers (2).
- cases
- 55
- unidentified
- 2
- period
- 1956–2025
- source
- 1
Notable cases
The most complete records: account of the sighting, conclusion of the official investigation.
- UnexplainedJune 27, 1994
Neufchâtel-en-Bray
Seine-Maritime, Normandie, France
GEIPAN (CNES)
- UnexplainedJanuary 12, 1989
Saint-Martin-de-Boscherville
Seine-Maritime, Normandie, France
GEIPAN (CNES)
- Insufficient dataNovember 2, 2025
Ellecourt
Seine-Maritime, Normandie, France
GEIPAN (CNES)
- Probably explainedOctober 12, 2024
Colleville
Seine-Maritime, Normandie, France
→ Ground lights and lasers
GEIPAN (CNES)
- ExplainedMay 24, 2023
Rouen
Seine-Maritime, Normandie, France
→ Space station (ISS)
GEIPAN (CNES)
- ExplainedApril 23, 2023
Offranville
Seine-Maritime, Normandie, France
→ Optical phenomena
GEIPAN (CNES)
- ExplainedApril 1, 2017
Rouen
Seine-Maritime, Normandie, France
→ Planets
GEIPAN (CNES)
- ExplainedMarch 27, 2017
Le Havre
Seine-Maritime, Normandie, France
→ Birds, insects, nature
GEIPAN (CNES)
- ExplainedApril 17, 2016
Grand-Couronne
Seine-Maritime, Normandie, France
→ Stars
GEIPAN (CNES)
Other departments in the region
Identified causes
For cases explained with certainty or probably.
All sightings
| Date | Place | Status | Identified cause |
|---|---|---|---|
| November 2, 2025 | Ellecourt · Seine-Maritime | Insufficient data | |
| October 12, 2024 | Colleville · Seine-Maritime | Probably explained | Ground lights and lasers |
| May 24, 2023 | Rouen · Seine-Maritime | Explained | Space station (ISS) |
| April 23, 2023 | Offranville · Seine-Maritime | Explained | Optical phenomena |
| April 1, 2017 | Rouen · Seine-Maritime | Explained | Planets |
| March 27, 2017 | Le Havre · Seine-Maritime | Explained | Birds, insects, nature |
| April 17, 2016 | Grand-Couronne · Seine-Maritime | Explained | Stars |
| November 1, 2015 | Bordeaux-Saint-Clair · Seine-Maritime | Explained | Stars |
| September 6, 2015 | Écrainville · Seine-Maritime | Probably explained | Aircraft |
| July 21, 2015 | Rouen · Seine-Maritime | Probably explained | Sky lanterns |
| July 12, 2015 | Gainneville · Seine-Maritime | Probably explained | Sky lanterns |
| May 30, 2015 | Le Havre · Seine-Maritime | Probably explained | Aircraft |
| April 16, 2014 | Le Petit-Quevilly · Seine-Maritime | Explained | Satellites |
| August 31, 2013 | Saint-Léger-aux-Bois · Seine-Maritime | Explained | Satellites |
| July 24, 2013 | Gonneville-la-Mallet · Seine-Maritime | Insufficient data | |
| November 22, 2012 | Montivilliers · Seine-Maritime | Probably explained | Aircraft |
| August 12, 2012 | Bois-Guillaume · Seine-Maritime | Probably explained | Sky lanterns |
| May 28, 2012 | Doudeauville · Seine-Maritime | Explained | Meteors and fireballs |
| May 24, 2012 | Dieppe · Seine-Maritime | Insufficient data | |
| November 26, 2011 | Le Havre · Seine-Maritime | Explained | Meteors and fireballs |
| October 22, 2011 | Bois-Guillaume · Seine-Maritime | Insufficient data | |
| August 24, 2011 | Trouville · Seine-Maritime | Insufficient data | |
| December 30, 2010 | Senneville-sur-Fécamp · Seine-Maritime | Insufficient data | |
| September 10, 2010 | Saint-Jacques-sur-Darnétal · Seine-Maritime | Probably explained | Sky lanterns |
| August 29, 2010 | Bracquemont · Seine-Maritime | Probably explained | Sky lanterns |
| July 18, 2010 | Canteleu · Seine-Maritime | Probably explained | Balloons |
| July 3, 2010 | Petit-Couronne · Seine-Maritime | Explained | Space station (ISS) |
| May 23, 2010 | Auberville-la-Renault · Seine-Maritime | Probably explained | Sky lanterns |
| August 31, 2009 | Le Havre · Seine-Maritime | Insufficient data | |
| November 7, 2008 | Bois-Guillaume · Seine-Maritime | Probably explained | Balloons |
| February 13, 2008 | Saint-Étienne-du-Rouvray · Seine-Maritime | Probably explained | Meteors and fireballs |
| December 15, 2006 | Le Havre · Seine-Maritime | Probably explained | Balloons |
| November 5, 2005 | Lillebonne · Seine-Maritime | Insufficient data | |
| August 1, 2000 | Le Havre · Seine-Maritime | Probably explained | |
| September 18, 1998 | Le Havre · Seine-Maritime | Probably explained | |
| June 27, 1994 | Neufchâtel-en-Bray · Seine-Maritime | Unexplained | |
| July 2, 1992 | Criquetot-l'Esneval · Seine-Maritime | Insufficient data | |
| April 25, 1992 | Montivilliers · Seine-Maritime | Insufficient data | |
| November 25, 1989 | Le Havre · Seine-Maritime | Insufficient data | |
| November 1989 | Dieppe · Seine-Maritime | Insufficient data | |
| January 12, 1989 | Saint-Martin-de-Boscherville · Seine-Maritime | Unexplained | |
| October 4, 1987 | Gueutteville-les-Grès · Seine-Maritime | Probably explained | |
| November 19, 1982 | Rouen · Seine-Maritime | Insufficient data | |
| August 6, 1982 | Mont-Saint-Aignan · Seine-Maritime | Probably explained | Balloons |
| October 1981 | Ouville-l'Abbaye · Seine-Maritime | Insufficient data | |
| April 7, 1981 | Oissel · Seine-Maritime | Probably explained | |
| August 14, 1980 | Buchy · Seine-Maritime | Probably explained | |
| August 6, 1980 | Neufchâtel-en-Bray · Seine-Maritime | Insufficient data | |
| May 15, 1980 | Duclair · Seine-Maritime | Probably explained | |
| January 25, 1980 | Rouen · Seine-Maritime | Probably explained | |
| March 31, 1979 | Morgny-la-Pommeraye · Seine-Maritime | Probably explained | |
| June 18, 1976 | Dieppe · Seine-Maritime | Insufficient data | |
| April 15, 1976 | Criel-sur-Mer · Seine-Maritime | Insufficient data | |
| November 13, 1960 | La Londe · Seine-Maritime | Probably explained | Hoaxes |
| April 8, 1956 | Seine-Maritime | Insufficient data |
The figures on this page are computed from the official records cited on each case. See sources and method