ALSACAT -> Home 

Cette page en françaisCliquez!


ALSACAT is my comprehensive catalog of UFO sighting reports in Alsace, the region is the North-East of France, whether they are "explained" or "unexplained".

The ALSACAT catalog is made of case files with a case number, summary, quantitative information (date, location, number of witnesses...), classifications, all sources mentioning the case with their references, a discussion of the case in order to evaluate its causes, and a history of the changes made to the file. A general index and thematic sub-catalogs give access to these Alsatian case files.

Previous case Next case >

Case of Mulhouse, on August 19, 2012:

Case number:



On August 20, 2012, a certain Alexander Nest published a video on Youtube titled "UFO/UAP Mulhouse August 19, 2012."

The video shows 57 seconds of a flashing light and nothing else, the normal sound track was replaced by "Woo woo" music.

His (alleged) observation report merely states: "Unidentified Aerospace Phenomena (UAP) observed above Mulhouse at 3:50, August 19, 2012... No idea what it could be!"

A friend commented: "The flashing light of the motorcycle."


Temporal data:

Date: August 19, 2012
Time: 03:50
Duration: 57 seconds
First known report date: August 20, 2012
Reporting delay: 1 day.

Geographical data:

Department: Haut-Rhin
City: Mulhouse
Place: ?
Latitude: 47.750
Longitude: 7.335
Uncertainty radius: 5 km

Witnesses data:

Number of alleged witnesses: 1
Number of known witnesses: 1
Number of named witnesses: 1
Witness(es) ages: ?
Witness(es) types: Male.

Ufology data:

Reporting channel: ?
Type of location: ?
Visibility conditions: Night
UFO observed: ?
UFO arrival observed: No
UFO departure observed: No
Entities: No
Photographs: Yes.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: Puzzled.
Witnesses interpretation: UFO.


Hynek: NL
ALSACAT: Probable innocent hoax, motorbike light.



UFO/UAP in Mulhouse on August 19, 2012

Alexandre Nest

Published on August 20, 2012

Unidentified Aerospace Phenomenon (UAP) observed above Mulhouse, at about 3:50, on August 19, 2012... No idea about what that might have been !



The "witness" is sporty, he seems interested in motorbikes. Six comments added by a friend or colleague do not relate to the video, except for one that simply says: "The flashing light of the motorbike."

The normal soundtrack one would expect for a real UFO sighting was replaced by a "scary music" soundtrack.


Luminosity and contrast enhancements on images from the video Unfortunately reveal no detail that would betray the presence of a motorcycle or something like that.

This is obviously not positive proof of the contrary either: digital video, highly compressed, lose such details on the image parts that appear without details anyway.


Probable innocent hoax, motorbike light.

Sources references:

* = Source is available to me.
? = Source I am told about but could not get so far. Help needed.

File history:


Main author: Patrick Gross
Contributors: None
Reviewers: None
Editeur: Patrick Gross

Changes history:

Version: Create/changed by: Date: Description:
0.1 Patrick Gross April 2, 2014 Creation, [you1].
1.0 Patrick Gross April 2, 2014 First published.

Valid XHTML 1.0 Strict

 Feedback  |  Top  |  Back  |  Forward  |  Map  |  List |  Home
This page was last updated on April 2, 2014.