Bryan Guarente
Wed, 17 Mar 2010 18:47:22 -0700
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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