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ALSACAT:

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 Batzendorf, on March 5, 2018:

Case number:

ALSACAT-2018-03-05-BATZENDORF-1

Summary:

Aurélien Wolff, a young man from Batzendorf, 18 years old in 2018, had already posted 5 "UFO sighting" reports of his own on the ufology Web board Les Mystères des OVNIS - sighting of low strangeness explicable as misinterpretations - when he added to the collection his observation of a "disturbing phenomenon" on March 5, 2018 from 04:23 p.m. to 04:25 p.m., also from Batzendorf.

In a blue sky with few clouds, he had seen "this cloudy trail which seems to me disturbing enough to talk about it here", because "it did not really last long", and he did not understand what craft could have caused it, while suspecting a "propeller plane or whatever."

He took three photos, visible in this file, which show simple planes contrails.

Data:

Temporal data:

Date: March 5, 2018
Time: 04:23 p.m.
Duration: 2 minutes.
First known report date: March 5, 2018
Reporting delay: 36 minutes.

Geographical data:

Department: Bas-Rhin
City: Batzendorf
Place: From home.
Latitude: 48.784
Longitude: 7.701
Uncertainty ratio: 30 m

Witnesses data:

Number of alleged witnesses: 1
Number of known witnesses: 1
Number of named witnesses: 1
Witness(es) ages: 18
Witness(es) types: Male resident.

Ufology data:

Reporting channel: By the Web to the ufology board "Les Mystères des OVNIS."
Type of location: From home.
Visibility conditions: Day, clear sky.
UFO observed: N/A
UFO arrival observed: ?
UFO departure observed: Yes
Entities: No
Photographs: Yes.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: Puzzled.
Witnesses interpretation: ?

Classifications:

Hynek: ?
ALSACAT: Planes contrails.

Sources:

[Ref. myo1:] "LES MYSTERES DES OVNIS" WEB BOARD:

aurelien wolff
Good participation
Male Age: 18
Number of messages: 57
Registered on: 11/15/2014
Localization: alsace
Job: none
Hobbies: model kits, observing ufos

2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on mon 05 March 2018, 04:59 p.m.

Ufos in Batzendorf, 4a rue principale: 2018: on 03/05 at 04:23 p.m. - A puzzling phenomenon - Batzendorf,4a rue principaleBas-Rhin (dep.67)

Firstname or alias: aurelien wolff

City: Batzendorf,4a rue principale Department: Bas-Rhin (dep.67)
Region: Alsace launch a call for witnesses: http://www.lalsace.fr
Country: France
Date: 03/05/2018
Hour of the start of the observation: 04:23 p.m.
Duration of the observation: 8 minutes

Weather conditions: blue sky, clear,little clouds
Number of witnesses: 1
Type of phenomenon: A puzzling phenomenon
Official reporting: not specified

Full report of the observation:

Hello,the testimony being in writing,but chrome buggedwhile i was writinh it,there it is just in case.

So,i was doing my researches luftwaffe 46 when i wanted to look at the sky at 04:23 p.m.,i noticed imediatly this cloudy trail that seemed quite puzzling to talk about it,because this one did not last long,and i admit i dont know fron what craft it comes(pers hypothesis: propeller plane or other,its up to you to see),i was able to take 3 photos of this phenomenon,2 taken at 04:24 p.m. and one at 04:25 p.m.,the phenomenon disappeared ,in my opinion quite suddenly at 04:31 when i again looked by the dorr(or window,i admit i dont know you you call this,well see photo...).

on Mon

That's it,i whare this with you,because i find that thing quite puzzling and i would like to know what could have caused this pehnomenon .

the photos:

https://i.servimg.com/u/f62/18/44/40/76/dsc_4913.jpg
https://i.servimg.com/u/f62/18/44/40/76/dsc_4912.jpg
https://i.servimg.com/u/f62/18/44/40/76/dsc_4911.jpg

Good bye

Precise description: white cloudy trail
Color: white
Size of the phenomenon:
Behavior: disappeared only 8 minutes after the observation
Trajectoiye: no - specify
Specific noise: No
specific odor: No
Direction of the object relative to the wind: i do not know
Presence of installations: Industry area my house,barn,the village of batzendorf
similar photo: not specified
Table: not specified

https://www.google.com/maps/place/4+Rue+Principale,
+67500+Batzendorf/@48.7839199,7.7010887,92m/data=!
3m1!1e3!4m5!3m4!1s0x4796be27f546d231:0xf63979c9287
e2b64!8m2!3d48.7840838!4d7.7012362?hl=en

Contact made with the witness: yes

Investigator in charge of the file:

Keywords: Ufos in Batzendorf,4a rue principale , Batzendorf,4a rue principale Ufo, Ufology, Witnesses, Alsace launch a call for witness: http://www.lalsace.fr, France, 04:23 p.m., 05, ,

I certify on my honor the truthefulness of the information given and the authenticity of the delivered documents. I do not know how to identify this phenomenon thank you in advance for your answers.

Regards aurelien wolff

Polyèdre57
Analyst investigator
Male Age: 47
Number of messages: 5681
Registered on: 16/08/2012
Localization: Moselle, Metz city
Job: Vaguemestre
Hobbies: Fishing sports, regional history, defense and religious heritage, unconventional music
http://ovnipanlorraine.blogspot.fr/

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Mon 05 Mar 2018, 05:42 p.m.

It is in any case something good from us ;-) Aircraft ... If it is civilian, we can try to find it, but that will not help us much since the we waste our time with our own toys. In my humble opinion, there is a good chance that it is military (Mirage or Rafale). Did you hear remarkable activity in your ear? These aircraft generally rarely go unnoticed.

However, the RTBA zone was not activated (I just checked it), so it would be another type of movement outside of the usual exercises.

Edit: Planefinder and Casperflights don't give anything, so it's probably military. Now there is always the possibility of having a trail of a meteor entering the atmosphere (although I doubt it a bit), if this is the case, we should have more reports on ad-hoc networks (case to be continued).

@+

aurelien wolff
Good participation
Male Age: 18
Number of messages: 57
Registered on: 11/15/2014
Localization: alsace
Job: none
Hobbies: model kits, observing ufos

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

om Mon 05 Mar 2018, 08:00 p.m.

no moise heard in the day and i did spend a lot of time in the concerned room i am a geeeeeeeeek,but i educated myself nevertheless thanks to that),what puzzles me is the disappearance of the trail after 8 minutes after i noticed it,how long do plance contrails last?

Polyèdre57
Analyst investigator
Male Age: 47
Number of messages: 5681
Registered on: 16/08/2012
Localization: Moselle, Metz city
Job: Vaguemestre
Hobbies: Fishing sports, regional history, defense and religious heritage, unconventional music
http://ovnipanlorraine.blogspot.fr/

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Mon 05 Mar 2018, 08:47 p.m.

@aurelien wolff wrote:

what puzzles me is the disappearance of the trail after 8 minutes after i noticed it,how long do plance contrails last?

Very variable depending on the weather and altitude. We cannot say that this day was really windy and rather mild after what we have endured the last few days.

@+

Loreline
Administrateur
Féminin Age: 68
Number of messages: 7168
Registered on: 10/08/2012
Localization: Bretagne
Job: ************
Hobbies: Découvrir, étudier et comprendre

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Mon 05 Mar 2018, 09:16 p.m.

Goof evening Aurélien and Polyèdre

I sometimes see this kind of cloud in my sky and I have often seen airplane contrails, - just a small bright dot and only when it was caught in a ray of sunlight - without hearing the slightest noise

Good evening ;-)

aurelien wolff
Good participation
Male Age: 18
Number of messages: 57
Registered on: 11/15/2014
Localization: alsace
Job: none
Hobbies: model kits, observing ufos

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

le Mar 06 Mar 2018, 07:14

right,but you need to see the shapes of thes things on the photo. Because to me its not an alrliner ,ot it is an airliner in trouble.

By the way, i tried a thing with paint:

Polyèdre57
Analyst investigator
Male Age: 47
Number of messages: 5681
Registered on: 16/08/2012
Localization: Moselle, Metz city
Job: Vaguemestre
Hobbies: Fishing sports, regional history, defense and religious heritage, unconventional music
http://ovnipanlorraine.blogspot.fr/

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Tue 06 Mar 2018, 05:19 p.m.

Reputation of the message: 100% (1 vote)

This trace was deformed with the wind several minutes after the passage of the aircraft. This one is already no longer on the pictures. The "&" clearly shows that it can only be a maneuvering military fighter plane.

@+

aurelien wolff
Good participation
Male Age: 18
Number of messages: 57
Registered on: 11/15/2014
Localization: alsace
Job: none
Hobbies: model kits, observing ufos

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Wed 07 Mar 2018, 00:11

Why didnt i hear anything then?

Polyèdre57
Analyst investigator
Male Age: 47
Number of messages: 5681
Registered on: 16/08/2012
Localization: Moselle, Metz city
Job: Vaguemestre
Hobbies: Fishing sports, regional history, defense and religious heritage, unconventional music
http://ovnipanlorraine.blogspot.fr/

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Wed 07 Mar 2018, 00:34

Headphones on your ears? Distracted by something? There can be many situations. The relationship between the passage of a presumably military aircraft has not been established at the appropriate time due to the deviation of the event at time X (several minutes have passed in time).

The weather conditions being quite good with a light wind, the traces left by this aircraft took longer to disintegrate.

In any case, it is almost impossible to find the culprit. The only thing we are sure is that it is not alien.

@+

aurelien wolff
Good participation
Male Age: 18
Number of messages: 57
Registered on: 11/15/2014
Localization: alsace
Job: none
Hobbies: model kits, observing ufos

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Wed 07 Mar 2018, 00:51

I didnt say it was E.T either(i'm not in that craze "weird thing is the sky = E.T),and i was concentrated on my aeronotical researrches on the junkers ju 287.

Alain.M
Analyste Observations
Male Age: 7
Number of messages: 2034
Registered on: 19/10/2009
Localization: Jupiter
Job: Réalisation, infographie, et design sonore
Hobbies: Création, bidouille, et paranormal

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Wed 07 Mar 2018, 00:59

Hello,

The deformation in "loops" or "pieces of spirals", can also be due to another aircraft (of another type having produced a trail of different shape and density) having crossed the trail of condensation which interests us.

(Although the 2nd trail, "under-arrowed" in green in the following image, was likely to have been produced before, and at a different altitude).

Why no noise?

- Too high
- Wind in opposite direction
- Lack of inattention [sic]
- Various parasite souds (for example, are you a geek who listens to music while geeking [sic], or maybe you are geeking on games producing sounds?)

We find ourselves "right on" here in a "zone of indistinguishability". There is a strong probability that the aircraft is of Terrestrial origin, but there is nothing to exclude the exotic origin, as long as we have not identified exactly the aircraft which produced this contrail.

A.

aurelien wolff
Good participation
Male Age: 18
Number of messages: 57
Registered on: 11/15/2014
Localization: alsace
Job: none
Hobbies: model kits, observing ufos

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

le Mer 07 Mar 2018, 13:07

no no music and i was not playing at that time, i was educating myself rather.

Alain.M
Analyste Observations
Male Age: 7
Number of messages: 2034
Registered on: 19/10/2009
Localization: Jupiter
Job: Réalisation, infographie, et design sonore
Hobbies: Création, bidouille, et paranormal

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Wed 07 Mar 2018, 01:56 p.m.

You must have heard the noise of the second aircraft, then.

A.

aurelien wolff
Good participation
Male Age: 18
Number of messages: 57
Registered on: 11/15/2014
Localization: alsace
Job: none
Hobbies: model kits, observing ufos

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

le Mer 07 Mar 2018, 14:59

Nada niet,really nothing,really heard nothing,i'm serious here, i mean REALLY serious.

Alain.M
Analyste Observations
Male Age: 7
Number of messages: 2034
Registered on: 19/10/2009
Localization: Jupiter
Job: Réalisation, infographie, et design sonore
Hobbies: Création, bidouille, et paranormal

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Wed 07 Mar 2018, 07:35 p.m.

Oh, so if you haven't heard either of the 2 aircraft, it's probably for one of the other reasons cited.

On the other hand, on your photo with the red line, you seem to have mixed the 2 streaks...

Here is how I see things from my side:

A.

aurelien wolff
Good participation
Male Age: 18
Number of messages: 57
Registered on: 11/15/2014
Localization: alsace
Job: none
Hobbies: model kits, observing ufos

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Fri 09 Mar 2018, 09:28 a.m.

Good! Wink Anyway i wonder why i heard nothing!

Polyèdre57
Analyst investigator
Male Age: 47
Number of messages: 5681
Registered on: 16/08/2012
Localization: Moselle, Metz city
Job: Vaguemestre
Hobbies: Fishing sports, regional history, defense and religious heritage, unconventional music
http://ovnipanlorraine.blogspot.fr/

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Dri 09 Mar 2018, 11:51 a.m.

@aurelien wolff wrote:

Good ! Wink Anyway i wonder why i heard nothing!

These are small human faults or rather things on which we no longer pay attention. What is normal than hearing planes during a day...

@+

Loreline
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Number of messages: 7168
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Localization: Brittany
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Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on WEd 14 Mar 2018, 10:36 a.m.

Hello

Thank you Aurélien for your answers ;-)

Maybe we can publish your testimony on the public forum?

Regards

Loreline

Hocine
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Male Age: 73
Number of messages: 1253
Registered on: 18/06/2007
Localization: Afrique du Nord
Job: retired

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Wed 14 Mar 2018, 08:21 p.m.

In my opinion it must be a vapor trail due to a plane in high altitudes.

I believe, that if it were a non-terrestrial UFO object, it would give off no trace of consumption of Terran oxygen and release of a trail into the atmosphere.

If it was an extraterrestrial object with a clear trace behind it, then the UFO would be tracked, from country to country, if UFOs give off traces of a vapor plume or the like. thing of this kind, and which they persist in the sky, we will end up finding a way to collect samples of these traces and analyze them to know their nature, to find what is behind this rejection and therefore, perhaps us. will have an idea on the propulsion system of these UFOs, but if we observe these UFOs well, it seems to me that they do not give off anything, I do not think if they come from their world to ours, they will pass to a consumption of th oxygen in the fashion of Earth planes and rejects the atmosphere, or they use a reserve of fuel imported from their world and they do their "degassing" on Earth space.

Well this is what I think of those plumes of steam in the sky, if not something else.

Yvon Cédric
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Job: IT multi OS Expert in the air safety at the European level
Hobbies: Sciences, Aeronautics, Space and Technologies

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Thu 15 Mar 2018, 02:03 p.m.

Reputation of message: 100% (1 vote)

An explanation that can help to understand this phenomenon.

Happy reading :)

source: http://www.climat-en-questions.fr/reponse/mecanismes-devolution/trainees-davion-climat-par-olivier-boucher

Posted on February 11, 2014

Planes flying at high altitudes sometimes leave white streaks in the sky. This phenomenon raises legitimate questions from the public; it is also a subject of study for researchers.

The conditions of formation of airplane contrails in the sky have been understood since the 1940s with the work of Schmidt 1 (1941) and Appleman 2 (1953). The thermodynamic theory was then completed by Schumann 3 (1996) to take into account the efficiency of aircraft engines.

The principle of forming these trails is simple. The warm, humid air, which exits the aircraft engine, mixes with the cooler, drier air in the atmosphere. Under certain temperature and humidity conditions that are only encountered in the upper atmosphere at altitudes of 10 km at our latitudes, this mixture leads to the condensation of water vapor into droplets of liquid water which freeze then almost instantly to form a cloud of small ice crystals. This phenomenon of condensation can also be observed when you breathe out air on a cold day and a small cloud forms in front of your mouth. In this case, the cloud evaporates quickly because it is small in size and the ambient air is not saturated with water vapor. In the upper atmosphere, things can be different.

If the upper atmosphere is very dry, there is no formation of airplane contrail. This is why there are days when we do not observe contrails although planes are flying overhead.

If the upper atmosphere is dry but humid enough to allow a trail to form, it will evaporate (or rather sublimate) quickly. In this case, the drag is very short lived.

If the upper atmosphere is humid but remains undersaturated with respect to the ice, the drag will take longer to sublimate, typically up to half an hour, because it takes on the one hand that the time that the mixture is made between the air of the vortex located behind the plane and its environment, and on the other hand that the ice can sublimate in a more humid environment.

Finally, if the upper atmosphere is over-saturated with respect to the ice, the drag will continue to develop from the condensation of water vapor present in the atmosphere. In this case, it can persist for hours and gradually turns into a cloudy veil. These "artificial" clouds are initially formed of small ice crystals, but after a few hours they become indistinguishable from natural cirrus-like clouds. They will disappear later depending on the weather variations.

Two remarks are in order. The first is that the humidity conditions in the upper atmosphere are very variable, which is why we can see airplane contrails which are intermittent. They only persist where the upper atmosphere is wetter or over-saturated realtive to ice. The second is that the upper atmosphere can be over-saturated with respect to the ice without a "natural" cloud having been able to form. This phenomenon, known for a long time, is due to the fact that the formation of ice crystals which constitute the so-called "cold" clouds require the presence of small ice nuclei such as dust or pollens which are in very low concentrations in the upper atmosphere. . The "hot humid air-cold dry air" mixture behind the aircraft bypasses this natural process and allows the condensation of liquid water. So it was the plane that triggered the appearance of the trails, but almost all of the ice in the persistent trails comes from water vapor that was already present in the atmosphere.

We do not know how to predict the humidity of the upper atmosphere well so that it is difficult to predict where contrails will form or not. It would appear, however, that certain meteorological situations favor the atmospheric conditions necessary for the formation of trails. There is no reason to believe that these favorable conditions for the appearance of contrails are becoming more frequent but it is sure that the number of planes has been increasing continuously for decades, which in itself increases the likelihood of formation of contrails.

Researchers are interested in aircraft contrails because they have an impact on the climate, which is small, but not necessarily negligible. Induced contrails and cirrus clouds have a dual impact on the climate: they reflect solar radiation, which helps cool the climate, but they also induce a greenhouse effect, which helps to warm the climate. The IPCC report of 1999, and almost all the studies carried out since, conclude that the warming effect by the greenhouse effect outweighs the cooling effect by reflection of solar radiation. The 2013 IPCC report estimates the radiative forcing of aircraft contrails to be +0.01 Wm - 2 with a confidence interval of +0.005 to +0.03 Wm - 2 and that due to contrails and induced cirrus clouds taken together is + 0.05 Wm - 2 with a confidence interval of +0.02 to +0.15 Wm - 2. This forcing is low compared to that of greenhouse gases of human origin (2.7 W.m - 2). Even if it is concentrated on certain regions, climate models show that it remains too small to produce observable effects on the climate of our regions (Rap et al. 4, 2010).

elisalise
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Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

On Thu 15 Mar 2018, 11:32 p.m.

Thank you. Really interesting

Regds

Loreline
Administrator
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Localization: Bretagne
Job: ************
Hobbies: Discover, study and understand

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

on Fri 16 Mar 2018, 12:57

Hello

Cedric

A big thank you for this explanation

Regards

Loreline

aurelien wolff
Good participation
Male Age: 18
Number of messages: 57
Registered on: 11/15/2014
Localization: alsace
Job: none
Hobbies: model kits, observing ufos

Re: 2018: on 03/05 at 04:23 - p.m. A puzzling phenomenon - Ufos in Batzendorf,4a rue principale -Bas-Rhin (dep.67)

le Sam 17 Mar 2018, 12:18

Thank you for all these explanations!

PS:sorry about my absence!

Discussion:

Carte.

NIL.

Evaluation:

Planes contrails.

Sources references:

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

File history:

Authoring:

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

Changes history:

Version: Create/changed by: Date: Description:
0.1 Patrick Gross July 2, 2021 Creation, [myo1].
1.0 Patrick Gross July 2, 2021 First published.

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