Heavy migration into the Upper Midwest

National Overview

The migration superhighway was open for business once again last night as the latest front pushed east across the Plains and Midwest. The heaviest migration was along the frontal boundary which swept across western Iowa and Minnesota by morning. Birders across the Midwest should be seeing new birds today.

National Composite NEXRAD from around midnight on 5/20/12

National Composite NEXRAD from around midnight on 5/20/12

Below are the radar loops from sunset last night through 5:00am (central time) this morning

Since I will be publishing “as I go” each morning you may see some incomplete posts throughout the early morning hours. Don’t worry- it’s coming!

Mid Atlantic

Delaware & New Jersey

Frames are every 1/2 hour. Click on the thumbnail to view the full-sized animation.

Base Reflectivity image from Fort Dix Base Velocity image from Fort Dix Base Reflectivity image from Dover AFB Base Velocity image from Dover AFB

The Mid Atlantic was a bit of a mixed-bag in terms of migration last night. Northeast winds appear to have kept most birds down while a few appeared to take the leap anyway. Anything moving was doing so from ESE->WNW, so expect any chance for concentrations to be inland along the Delaware River… but I’m not holding my breath.

Upper Midwest

Iowa & Illinois

Frames are every 1/2 hour. Click on the thumbnail to view the full-sized animation.

Base Reflectivity image from Davenport, IA Base Velocity image from Davenport, IA Base Reflectivity image from Chicago, IL Base Velocity image from Chicago, IL

Hot and heavy migration up through Iowa and Illinois brought many new birds into and over the region. Birders in Iowa should be out today checking out the local haunts. Around Chicago migration was pushed a bit toward the lakeshore and therefore birders should be heading to the lake to find the best concentrations this morning.

Wisconsin

Frames are every 1/2 hour. Click on the thumbnail to view the full-sized animation.

Base Reflectivity image from Milwaukee Base Velocity image from Milwaukee Base Reflectivity image from La Crosse, WI Base Velocity image from La Crosse, WI Base Reflectivity image from Green Bay, WI Base Velocity image from Green Bay, WI

Another heavy migration event into the state last night with the heaviest returns being birds entering from the south and less birds leaving from the north. Birders in the region should be hitting the regular spring hotspots this morning unless you’re near Lake Michigan or western Lake Superior, in which case you should be heading for the lake shore. Migration over Milwaukee and Green Bay was along a distinct SW->NE axis and therefore birds should be in the lake shore migrant traps this morning. Over Duluth/Superior migration was overtaken by heavy storm activity early this morning and birds should have been put down along the lake shore at first light. I wouldn’t be surprised to hear about some great spring birding in that area today.

As always, woodcreeper.com depends on YOU to report your sightings and be our ‘eyes on the ground’, so please come back and give us an idea of how we’re doing predicting birding conditions in your neck of the woods.

For migration updates in other regions check-

Michigan’s Upper Peninsula – The Northwoods BIRDAR by Max Henschell <- NEW!
New England – Tom Auer’s blog
Florida/SE – Badbirdz Reloaded by Angel and Mariel Abreu
PA/Ohio Valley – Nemesis Bird by Drew Weber
NW Ohio – Birding the Crane Creek by Kenn Kaufman
Arizona – Words About Birds by Tim Schreckengost <- NEW!
New Mexico – Albuquerque Birding by Matt O’Donnell <- NEW!
Pac NW – Birds Over Portland by Greg Haworth
Continental US – eBird BirdCast Forecast & Report by Team eBird

This entry was posted in Birds, Forecast, Mid-Atlantic, Midwest, Migration, Migration Radar, NEXRAD Migration Study, Spring Migration 2012. Bookmark the permalink.

3 Responses to Heavy migration into the Upper Midwest

  1. Barbara Duerksen says:

    No new migrants this morning; 1.5 hour walk along wooded road.

  2. Barbara Duerksen says:

    That was NW Richland County

  3. Sandra Keller says:

    Nothing in Gloucester County, NJ.