Posted by: woodcreeper | April 23, 2008 @ 5:43 am

Against the wind

Migration over Florida last night was a “mixed bag”, to say the least. Here’s the radar from sunset last night through 5:00am this morning.

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.

Base Reflectivity image from Key West, FL Base Velocity image from Key West, FL Base Reflectivity image from Miami, FL Base Velocity image from Miami, FL Composite base reflectivity for the Southeastern USA

Migration was apparent at most locations across the peninsula last night, although the migration events were lighter and briefer than in previous nights. The presence of a headwind seemed to be the limiting factor, as most velocity images showed targets moving both in the direction of the wind (non-biological) and against it, heading north (most likely birds).
The most impressive of these was the Miami radar, where you can see a strong push of birds out of the area while a band of rain moves swiftly over the radar’s view. Additionally, a small push of Caribbean migrants from the Bahamas made landfall near Miami before the rain arrived. The Key West radar indicated no movement of birds out of Cuba last night, nor from the Keys to the mainland.

Good Birding

David

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