Front marches east, triggers migration to the south and east

Front marches east, triggers migration to the south and east

National overview

Migration continues to the south and east of the strong frontal system marching across the US. Be sure to check out Paul Hurtado’s site here for the US radar loop from 3pm yesterday to 3pm today (updated throughout the day) to really see this front in action.

national composite nexrad from around 11:00pm on 4/10/13
National Composite NEXRAD from around 11:00pm on 4/10/13

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

Upper Midwest

Minnesota & Wisconsin

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

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

Nothing going on over Minnesota and Wisconsin as the strong low pressure system passed us to the south and kept all birds grounded over the region.

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

and the same thing goes for Iowa and Illinois; heavy precipitation and strong opposing winds kept birds grounded.

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

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