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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.

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Case of Wissembourg, on April 25, 1945:

Case number:



A mission report of the 415th Night Fighter Squadron of the U.S. Army Air Forces said that on the night from April 24 to 25, 1945, a mission was performed between 01:05 a.m. and 03:30 a.m. by a P-61 Black Widow in the Wissembourg, Bas-Rhin, Alsace, to Ludwigsburg, Germany area.

The report says that at the Rhine river, at a position coded R-9593, four lights arranged in a square were observed. The lights went out as plane approached.

The observation was filed in two ufology sources as a "Foo-Fighters", or possible "Foo-Fighters" incident.


Temporal data:

Date: April 25, 1945
Time: Between 01:05 a.m. and 03:30 a.m.
Duration: ?
First known report date: April 1945
Reporting delay: Hours, days.

Geographical data:

Department: Bas-Rhin
City: Wissembourg
Place: From a P-61 night fighter plane near the Rhine river in the Bas-Rhin.
Latitude: 48.974
Longitude: 8.251
Uncertainty ratio: 50 km

Witnesses data:

Number of alleged witnesses: 1 to 3
Number of known witnesses: 1 to 3
Number of named witnesses: 0
Witness(es) ages: Adults
Witness(es) types: Night fighter plane crew of the U.S. Army.

Ufology data:

Reporting channel: Military mission report.
Type of location: From a P-61 night fighter plane near a river.
Visibility conditions: Night.
UFO observed: Yes
UFO arrival observed: Yes
UFO departure observed: Yes
Entities: No
Photographs: No.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: ?
Witnesses interpretation: ?


Hynek: NL
ALSACAT: Insufficient information. Probably not UFO-related.



April 23/24, 1945 - Mission 5 - 0105-0320 - P-61 Patrol - Wisenburg-Ludwigsburg Area. At Rhine River, R-9593, observed 4 lights arranged in a square. Lights went out as plane approached.

[Ref. prt1:] "PROJECT 1947" WEBSITE:

The website provides the 415th NFS mission report on the incident, as in [usa1].


The authors provide the 415th NFS mission report on the incident, as in [usa1].



Above: The 415th NFS had used British-built Bristol Beaufighters, then used US P-61 "Black Widow" after end of March 1945. This observation was made from a P-61.




The above map shows on the left the base of Ochey in France where the P-61s of the 415th NFS were based at that time, Wissembourg in the north of Alsace in France, and Ludwigsburg in Germany, 87 km to the East of Wissembourg. The observation is towards the Rhine, so on the frontier, it is impossible to say whether the case is strictly Alsatian or not.

Further discussions on "Foo-Fighters" in Alsace will be found for other cases in my catalog.

For this case, the data is extremely thin. It is not known, for example, whether the four lights were on the ground or in the air. They could have been on the ground and have nothing in common with the famous "Foo-fighters".

Other mission summaries in the same report sometimes mention "foo-fighters", sometimes "lights", some with their explanation such as "artillery flashes". Here, nothing is specified one way or another.


Insufficient information. Probably not UFO-related.

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
Editor: Patrick Gross

Changes history:

Version: Create/changed by: Date: Description:
0.1 Patrick Gross February 25, 2018 Creation, [usa1], [prt1], [mss1].
1.0 Patrick Gross February 25, 2018 First published.

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This page was last updated on February 25, 2018.