According to http://www.wundergound.com/ winds will be north at 8 PM tonight, becoming Northwest after midnight, then west all day Saturday. This bodes well for migratory movement though one isn't sure if precipitation occurs tonight and what factor it presents about the size of migration. Nevertheless, the predicted good winds and cooler temperatures is better what we are getting now from the south. Have fun tomorrow birding if you can get out there ( and home for the holiday weekend).
http://www.wunderground.com./cgi-bin/findweather/getForecast?hourly=1&query=11218&yday=246&weekday=Saturday
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
