Migration was hot and heavy last night, starting with trans-Gulf arrivals to the Texas and Louisiana coasts yesterday afternoon. Birds could be seen heading up the East, Mississippi and Central Flyways with the heaviest migration over south Florida, the Mid Atlantic, and west of the Appalachians. Heavy precipitation across East Texas and the Upper Midwest caused localized fallouts where they intercepted migrating birds early this morning. Migration was moderate throughout the western U.S. including the entire Pacific Flyway.

Heavy trans-Gulf arrival was followed by a major flight of nocturnal migrants across much of the U.S. last night. This included the entire southern tier of the country, the second big push into the Mid Atlantic and Northeast, a huge push up the Central and Mississippi Flyways and additional birds up along the Pacific coast.

Hot and heavy migration continued up the Central Flyway last night with the heaviest movement from Texas to Iowa. High pressure over the Great Lakes kept things a bit quieter from Michigan to the Ohio Valley, and the Northeast will have to wait for the latest low to clear before birds make it up that way in earnest. The real hotspots, last night, though, were in the metro D.C. area where heavy migration coupled with a strong low pressure system should lead to some fallout conditions this morning. Also, birders in eastern Kansas, where storms intersected birds in the early morning hours, should also be on the lookout for fallout at first light. Migration continued up the west coast as well, from California to Washington State.