Month: April 2013

  • As the cold front reaches the coast, limited migration apparent across the region

    National overview The strong cold front which has been marching east across the country for the last week has finally made its way to the eastern seaboard. High pressure behind the front brought with it northerly winds which kept migration down for the Upper Midwest and much of the east, while slacking winds across the […]

  • Birds migrate as the front marches east

    National overview The front continued its push to the east last night, triggering migration throughout the Eastern US. Otherwise high pressure from the Great Basin to the Midwest kept things quiet, while migration was again apparent through the Desert Southwest and up the Pacific Coast as far north as Northern California. Below are the radar […]

  • More migration to our south as heavy precipitation precludes any influx into Upper Midwest

    More migration to our south as heavy precipitation precludes any influx into Upper Midwest

    As the latest cold front marches eastward, migration continues in earnest across much of the country southeast of the frontal boundary. Trans-Gulf migrants came in high over the Texas and Louisiana coasts yesterday afternoon, and more birds poured into Florida from the Caribbean as well. Migration also continued throughout the desert Southwest and along the California up through the Pacific Northwest. Northerly winds and heavy precipitation on the backside of the front precluded any migration across the Great Plains and Upper Midwest.

  • More birds push north from Texas to New Jersey as the latest front marches east

    More birds push north from Texas to New Jersey as the latest front marches east

    The latest frontal boundary extends from Texas to New Jersey as of last night, bringing southerly flow from Mexico’s Yucatan Peninsula all the way through the Mid-Atlantic region. Trans-Gulf migration was evident late yesterday afternoon across the Texas and Louisiana Gulf Coast, and birds could also be seen making landfall in Florida this morning as they left Cuba after sunset last night. Heavy precipitation associated with the northeastern edge of the front may have caused some localized fallout conditions in the Washington D.C. area this morning as well. The Upper Midwest was again too far north of the frontal boundary to receive the bulk of the migrants heading towards the region, although the light and variable winds over the area did allow some birds already here to push farther to the northwest into the forecast zone.

  • Migration ahead of the cold front, from Texas to Maine

    Migration ahead of the cold front, from Texas to Maine

    Heavy migration was apparent along the leading edge of the cold front sweeping across the Central U.S. The heaviest of this activity was across East Texas, the Southeastern U.S. and up into New York and New England. Light to moderate migration was also evident over the Southwestern U.S. as well.

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