It was another night of good migration across the northeastern quarter of the US. Storms slowed down migration in the southeast but birds still were trying to migrate before incoming storms across NY, setting up possible fallout conditions. New Yorkers should be checking inland migrant traps as the weren’t along the lakeshore today.
Most of the action passed through western NY before many migrants were up but from I-81 and east, migrant traps should be checked for higher concentrations of migrants.
Click on the thumbnail to view the full-sized animation.
Pennsylvania & New Jersey
Maryland and Delaware
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.