Another big night of migration

National overview

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. To get a real feel for this event, you should definitely check out the Hurtado loop from 3pm yesterday through this morning here.

national composite nexrad from around 11:00pm on 5/8/13

National Composite NEXRAD from around 11:00pm on 5/8/13

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

Upper Midwest

Minnesota

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

base reflectivity image from Duluth base velocity image from Duluth

base reflectivity image from Minnesota base velocity image from Minnesota

Low pressure moved over Minnesota last night bringing with it some precipitation but doing little to affect migration. Birds were visibly migrating under the precipitation last night across the entire region. Expect birds to be dispersed across the landscape today, but those areas experiencing precipitation between 2am and sunrise should hold higher concentrations of birds this morning.

Wisconsin

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

base reflectivity image from green bay, wi base velocity image from green bay, wi

base reflectivity image from milwaukee base velocity image from milwaukee

base reflectivity image from la crosse, wi base velocity image from la crosse, wi

Birds pretty much moved across the state of Wisconsin last night with little weather to concentrate them. As with Minnesota, expect birds to be dispersed across the landscape with most spring hotspots showing turnover of species.

Iowa & Illinois

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

base reflectivity image from chicago, il base velocity image from chicago, il
base reflectivity image from davenport, ia base velocity image from davenport, ia

The Central Flyway is open for business, and birds continued to flow up through the region last night. No weather to strong directional winds to concentrate birds means they’ll be dispersed across the landscape today. Look for increasing species diversity throughout the region.

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.

Good Birding,

David

For migration updates in other regions check-

Michigan’s Upper Peninsula - The Northwoods BIRDAR by Max Henschell
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
Pac NW - Birds Over Portland by Greg Haworth
Continental US - eBird BirdCast Forecast & Report by Team eBird

This entry was posted in Birds, Forecast, Migration, Migration Radar, NEXRAD Migration Study, Spring Migration 2013. Bookmark the permalink.

One Response to Another big night of migration

  1. Audrey H. says:

    This is just so awesome. Thanks so much for sharing this migration imagery. I live in South Texas, where we get both the trans-gulf and circum-gulf migrants passing through, and I see a lot of activity moving into our area both from the Gulf and Mexico in the loop. We saw several warblers this morning including a Mourning Warbler – about 80 miles inland from the coast.