Frames are every 1/2 hour for reflectivity and velocity, and every hour for the regional composite. Click on the thumbnail to view the full-sized animation.
As you can see, there was a moderate amount of migration occurring before the passage of the front. As soon as the front approaches, though, birds drop out of the sky. This could mean fallout conditions along the frontal boundary, which seems to be right up the “NJ Turnpike”, or right up the central region of the state. I would expect high concentrations of birds at Garret Mountain, Chimney Rock, and at sites along the Delaware River. Places like Cold Brook Preserve, which are notorious for big sparrow days, would also be a good bet this morning. The rule of thumb is if the rain woke you up, check your backyard for migrants.
Good Birding
David
P.S. Come check out my migration forecast for the Mid-Atlantic on Birdcapemay.org
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