Friday Evening A Big Night For Bird Migration

Take a look at the radar loop this evening.

At the beginning you see a few leftover showers over Southwest Washington, then right after sunset (7pm), the screen fills with north to south moving objects.  It’s migrating birds…thousands of them in the skies overhead.  I first noticed it again about a month ago (as fall approached), but it is quite impressive tonight.

You can read more about it in last spring’s post about the spring migration here:

Chief Meteorologist Mark Nelsen

9 Responses to Friday Evening A Big Night For Bird Migration

  1. oldwxwatcher says:

    During his weather segment on the 10 PM news last night (on CW 32) Matt Zaffino showed that radar loop zeroed in on the Long Beach peninsula. The movement was straight north to south. I believe he called it “An interesting weather phenomena.”

    • Garron near Washington Square says:

      Did you notice Erik? They parted ways around the dome! It must extend at least to the 15,000 foot level…

  2. Mark Nelsen says:

    I did hear geese two days ago while outside. Last time I heard them was last fall.

    • Boydo3 N. Albany says:

      We hear geese around this part of the valley pretty much year around. I think they move from refuge to refuge and golf course to golf course. But truly when the northern birds start to arrive, the flocks can be massive. What a great sound when the northern birds are moving into and flying over the valley! Some grass seed farmers might disagree 🙂

    • Mike says:

      If you look at the water vapor loop (past 12 hrs.) you can see the a southerly flow finally showing up over Oregon just about the same time the exodus began. Just speculation on my part but, seems like a logical signal for taking off for their southerly exodus along with the sun’s angle.

  3. Boydo3 N. Albany says:

    Kinda surprising given that it isn’t all that cold up north. Must be driven by a duration of daylight response. Hmmm…can’t be that, too many d’s. Uh, you get my point.

  4. schmit44 says:

    Truly fascinating Mark. Thanks for sharing.

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