1. Timothy Bray

    Timothy Bray New Member

    This was taken around 7:30 am north of ABQ. The intersecting lines moved with the stratus undulatus clouds rather rapidly from mostly east to west staying just as delineated and did not dissipate.

    Last edited by a moderator: Aug 20, 2017
  2. deirdre

    deirdre Moderator Staff Member

    It looks exactly like contrail shadows.

    And since contrails, which are literally clouds, persist and move just like other clouds... the shadows would move with the contrails.

    Did you take a zoomed out shot?
    • Agree Agree x 2
  3. Timothy Bray

    Timothy Bray New Member

    Yes I took with some zoom. Does the rapid departure that stayed synchronized alter your conclusion. Seems the contrail would have either dissipated at a different rate or moved to change the angles.
  4. deirdre

    deirdre Moderator Staff Member

    you mean..?, does the fact that the contrail moved at the same speed as the clouds alter my conclusion? No. Contrails are clouds too.

    depends on the wind and the altitudes. i would think the angles would change a bit, but they probably did and you just didnt notice. Which is why more photos would be helpful, video even better.
  5. Mick West

    Mick West Administrator Staff Member

    Contrails at different altitudes move at different speeds (and direction) and can dissipate at different rates.
  6. Timothy Bray

    Timothy Bray New Member

    Yes. I wish I would have taken video!!! After reviewing the original again, in light of your explanation (as well as the same from my son who is a atmospheric science pHD student) now I see what I thought was clear blue sky between clouds is actually more shadow like. Thanks for your opinion.