The question that I like to ask of all this is which level of winds matters
the most when talking about migration? I am seeing that others are taking into
account the surface wind direction (NWS observations and forecasts), but what
about above that? The winds change direction dramatically with height quite
often, especially in areas where the surface friction is high like large
cities, so how much are the higher level winds taken into account? If the
model predictions are right from this morning for tonight, then the winds in
both of your locations about a kilometer up in the atmosphere should be out of
the WNW. Shouldn't that hinder the movement of birds tonight?
Bryan Guarente
Meteorologist/Instructional Designer
The COMET Program
University Corporation for Atmospheric Research
Boulder, CO
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