1. Mick West

    Mick West Administrator Staff Member

    Another contrail at sunset is mistaken for a "UFO":
    http://www.huffingtonpost.co.uk/2015/01/28/unexplained-floating-ball-of-fire-ufo_n_6561314.html

    Very blurry and shaky video, and rather over-exposed.


    Sunset contrails are explained here:
    http://contrailscience.com/short-sunlit-contrails-look-like-ufos/

    [Update] Some views of the "UFO" match this video of an A340 Contrail very well in shape if we simply assume the trail does not last as long, and it's viewed from the ground instead of a nearby plane:

    [​IMG]


    Tracking the origin of the story is interesting:
    HuffPo Wierd News got it from:
    http://www.ufosightingsdaily.com/2015/01/ufo-shocked-residents-of-city-of-frias.html
    With what looks like it was translated


    This traces back to
    http://www.nuevodiarioweb.com.ar/no...rana-luz-conmociono-vecinos-ciudad-frias.html

    Which would put the date at Jan 23rd. (see below)
     
    Last edited: Feb 3, 2015
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  2. deirdre

    deirdre Moderator Staff Member

    i dont know. this video seems to be from january 4th.


    and the UFO site has a post dated January 8th, that looks like the same thing. ??
    http://www.ufosightingsdaily.com/2015/01/glowing-ufo-as-bright-as-sun-over.html

    fb.JPG

    not that there cant be two contrails, but maybe the stories are getting mixed up?
     
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  3. deirdre

    deirdre Moderator Staff Member

    here another video that has my above footage after 1:40.. and allegedly shot from another location in Brasil in beginning in video.

    How weird is this.. it does look like 2 contrails! i can even see the planes somewhat but strange they overlap like this.



    bra.JPG
     
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  4. Trailblazer

    Trailblazer Moderator Staff Member

    I would say that is just the trails from one four-engined jet.

    Compare this pic I took the other day:

    [​IMG]

    That is a Lufthansa A340.
     
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  5. Mick West

    Mick West Administrator Staff Member

    Yeah it's basically this (also an A340)
    [​IMG]

    But looking up more, so the shape of the trails is stretched, and with atmospheric conditions such that the trail does not last very long:
    [​IMG]

    Since the animated trail was videoed from a relatively nearby plane, some the visual spreading is from perspective. Correcting for that, we get:
    [​IMG]

    Video source:


    [Added this animation to the OP]
     
    Last edited: Jan 30, 2015
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  6. deirdre

    deirdre Moderator Staff Member

    ah. thanks. i can see the plane much clearer now. couldnt get a handle on my perspective.

    i think i found one of the original uploaders. translated some comments they give locations and times so maybe @Trailspotter or someone can do your 'magic' and find the specific flight.

     
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  7. Trailspotter

    Trailspotter Senior Member

    I do not have Premium FR24 to play back the flights in that area on January 4, 2014. However, checking it up for the just past sunset hour showed that an A340 does fly there at the time in a right direction (chasing the Sun):
    Screen shot 2015-01-31 at 00.27.07.
    This looks like a daily flight (apart Saturdays?) that occasionally flies over Porto Alegre (it happened other days of the past week). And it is the only four-engine plane flying there at around sunset.
     
    Last edited: Jan 30, 2015
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  8. Mick West

    Mick West Administrator Staff Member

    Sunset around 8-9PM local time there? so 23:00UTC Jan 3rd.
    [​IMG]

    Flightaware KMZ attached, unfortunately no ADSB near Porto Alegre, so the straight line interpolation dips underground.
     

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