COBirders,
We have another fun event coming up on Oct 23/24. Cut to the chase:
https://earth.nullschool.net/#2023/10/24/0400Z/wind/isobaric/850hPa/orthographic=-104.14,43.74,1404/loc=-105.120,40.191
(10pm
Oct 23; Green circle is Longmont, CO)
That map is one of the best examples of funneling or convergence I have
seen. Follow the winds backwards from CO and you can see that they are
originating from the far north of Canada. Anywhere along that track is
where birds could join this parade toward CO. Once they join the southern
half of that main push, they will get funneled toward CO.
So what's the catch... Well, this happens a little on the early side for
the best migration to hit CO. The timing of that map is 10pm, but as the
night goes on, this pattern weakens.
Oct 24 2am:
https://earth.nullschool.net/#2023/10/24/0800Z/wind/isobaric/850hPa/orthographic=-104.86,48.22,1404/loc=-105.120,40.191
(Green
circle is Longmont, CO)
Oct 24 6am:
https://earth.nullschool.net/#2023/10/24/1200Z/wind/isobaric/850hPa/orthographic=-104.86,48.22,1404/loc=-105.120,40.191
(Green
circle is Longmont, CO)
We should still see migrants on the move and they will likely concentrate
on the Front Range south of Denver with the highest densities likely around
Pueblo. So if you are making plans to bird on Monday late or Tuesday any
time, I would suggest heading toward the Pueblo area. If you are like me
and don't want to travel that far to bird, stay close to the Front Range
and keep your eyes peeled on your local hotspot, as all places along the
Front Range could see a good push of migrants.
Hope to see you out there picking up the goodies,
Bryan
Bryan Guarente
Meteorologist/Instructional Designer
UCAR/The COMET Program
Boulder, CO
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