South winds precede the front

Drew WeberMigration Update, PredictionsLeave a Comment

Regional Overview

Last night most of the action was once again along the coast as most of the region got drenched with rain and saw south winds dominate as the front approached. Neither the wind or the rain helped the migration cause. There should be very few new arrivals except where the front passed through early in the evening (like Ohio).

Today and tomorrow should be great for hawk and lake watching, so get to your nearest Great Lake or ridgetop hawk watch to see what the wind pushes through!


I don’t always have time to comment on the radar in each state. To interpret it yourself, read the quick tutorial at the bottom of the page.

New York

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Pennsylvania & New Jersey

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Ohio

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Maryland and Delaware

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Quick guide to interpreting the radar

On the top row (reflectivity radar), the images show the magnitude of migration. When birds are migrating, it looks like a donut shape around the center of the radar station.

The bottom row is the velocity radar. This shows the direction that the objects detected by the radar station are moving. Blues are moving towards the radar station, yellows and reds are moving away from the station. So for southbound migration, blue should be on the top half of the donut, yellow on the bottom half.

Watch for precipitation moving through during the night hours, this can cause birds to stop migrating in a concentrated area, creating the fabled ‘fallout’, particularly on nights with strong migration.

For more in depth info, watch this video.
For migration updates or other regions check-

Pac NW – Birds Over Portland by Greg Haworth

I need your help! These reports will only be as good as the feedback I get on these updates. Please leave comments on interesting patterns of migration you are seeing in the field so I can incorporate some ground truthing to my forecasts and predictions. Thanks!