SkyUnknown

UFO sightings by place

UFO sightings in Seine-Saint-Denis: 24 reports

SkyUnknown lists 24 UFO sightings in Seine-Saint-Denis, from 1977 to 2025, drawn from official records: GEIPAN (CNES). The busiest year was 2009, with 3 cases.

Of the 24 cases with a conclusion from their source, 71% are explained (with certainty or probably), 29% lack the data to conclude, and 0 remains unidentified. The most frequent identified causes: balloons (4); sky lanterns (4); aircraft (3).

Most frequently named places: Gagny (3), Noisy-le-Grand (3), Villemomble (2), and Noisy-le-Sec (2).

cases
24
unidentified
0
period
1977–2025
source
1
Map of the cases

Notable cases

The most complete records: account of the sighting, conclusion of the official investigation.

Other departments in the region

Sightings by decade

2
1970s4
1980s1
1990s3
2000s11
2010s3
2020s

Identified causes

For cases explained with certainty or probably.

All sightings

DatePlaceStatus
August 26, 2025Neuilly-sur-Marne · Seine-Saint-DenisExplained
January 6, 2025Noisy-le-Grand · Seine-Saint-DenisExplained
August 26, 2024Noisy-le-Grand · Seine-Saint-DenisProbably explained
November 7, 2016Noisy-le-Sec · Seine-Saint-DenisProbably explained
June 27, 2016Gagny · Seine-Saint-DenisExplained
May 4, 2015Épinay-sur-Seine · Seine-Saint-DenisProbably explained
February 8, 2015Aubervilliers · Seine-Saint-DenisProbably explained
June 22, 2014Noisy-le-Grand · Seine-Saint-DenisProbably explained
December 9, 2013Romainville · Seine-Saint-DenisProbably explained
August 19, 2013Montfermeil · Seine-Saint-DenisExplained
February 11, 2013Villemomble · Seine-Saint-DenisProbably explained
August 13, 2012Gagny · Seine-Saint-DenisProbably explained
May 10, 2011Bagnolet · Seine-Saint-DenisProbably explained
July 1, 2010Rosny-sous-Bois · Seine-Saint-DenisInsufficient data
October 31, 2009Le Raincy · Seine-Saint-DenisProbably explained
September 29, 2009Saint-Ouen · Seine-Saint-DenisProbably explained
April 4, 2009Saint-Denis · Seine-Saint-DenisExplained
April 20, 1996Gagny · Seine-Saint-DenisInsufficient data
December 1988Noisy-le-Sec · Seine-Saint-DenisInsufficient data
October 6, 1986Villemomble · Seine-Saint-DenisInsufficient data
March 28, 1981Le Blanc-Mesnil · Seine-Saint-DenisInsufficient data
February 9, 1981Aulnay-sous-Bois · Seine-Saint-DenisProbably explained
January 16, 1978Drancy · Seine-Saint-DenisInsufficient data
August 12, 1977Les Lilas · Seine-Saint-DenisInsufficient data
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The figures on this page are computed from the official records cited on each case. See sources and method