COBirders,
-- It has been a nice change in the migrant pattern recently. By that, I mean we are starting to see more of them. There have been a few nice instances to share with you:
https://earth.nullschool.net/#2023/08/13/1200Z/wind/isobaric/850hPa/orthographic=-106.01,54.49,1548/loc=-105.120,40.191 (green circle is Longmont for reference)
The above is a link for this past Monday at 6am, slightly before the bird of interest was found.
Q1) What might have shown up with this type of pattern, and where might it have stopped? If you look at that link before reading on, you can make your own answer before finding out one of the answers.
There was a minor cold frontal passage this morning and it could lead to a good push of migrants showing up in the eBird alerts. Keep your eyes peeled today to see what comes.
6am Thursday, Aug 17: https://earth.nullschool.net/#2023/08/17/1200Z/wind/isobaric/850hPa/orthographic=-106.01,54.49,1548/loc=-105.120,40.191
Q2a) Where do you think the migrants will show up and what would you expect those birds to be?
Q2b) Does the source region for these winds match with the expected distribution and eBird bar charts for what species you "should/could" find this week?
Q1 answer: Upland Sandpiper at Lagerman Reservoir in Boulder County. There were probably plenty of other interesting birds, that was just the one I happened to be most intrigued by with this weather pattern.
Discuss as you see fit and good luck with migration. Keep your eyes and ears peeled.
Thanks,
Bryan
Bryan Guarente
Meteorologist/Instructional Designer
UCAR/The COMET Program
Boulder, CO
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