COBirders,
-- I've been waiting for a good migration forecast to come together for CO as the migration season is passing us by, what feels like, pretty quickly. This Thursday has the potential to be a good day for Coloradoans. Here is 6am on Thursday Oct 5 (green circle is Longmont, CO, but feel free to move around in time to see when the front is near you):
The forecast calls for frontal passage at 850mb to be right around sun up for a bunch of Colorado. This means any birds looking for a meal after traveling overnight behind that front could put down in your area at sun-up to get some chow. The origins of this frontal airmass are Northern Canada, with our local winds maybe only originating from WY/MT depending on how the forecast pans out.
There are no strong areas of convergence for birds to concentrate on, so expect that we will see an increase in migrants overall, but no particular location getting the best of it based on the weather (based on the food sources, that may be a different story).
Best bets: Eastern plains lakes/reservoirs.
Also, if you have any desire/need to chase the Kansas American Flamingo, you should probably do it before Thursday, because my educated guess is this bird will move on with this frontal passage. And it will be moving southeast, not west, no matter how much we want it to.
I'll keep you posted as this week moves along.
Thanks,
Bryan
Bryan Guarente
Meteorologist/Instructional Designer
UCAR/The COMET Program
Boulder, CO
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