Light migration last night

A light migration of birds was evident last night, as surface winds were calm. Here’s the radar from sunset last night through sunrise 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 Fort DixBase Velocity image from Fort DixBase Reflectivity image from Dover AFBBase Velocity image from Dover AFBComposite Base Reflectivity image from the Northeastern USA

Although winds aloft were out of the south, the absence of opposing winds at lower altitudes allowed for some migration last night. Winds did shift around to the west and eventually northwest this morning, as the cold front advanced into our area and eventually dissipated. By looking at the regional composite, we can see that migration behind the front (northern New York and western Pennsylvania) is quite heavy. We should expect these conditions over our area tonight- so plan for some birding tomorrow morning!

Good Birding 🙂

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