Birds behind the front

National overview

A cold front draped across the country from Nevada to the Ottawa, Canada marked the southern boundary of moderate to heavy migration down into the midsection of the U.S. this morning. High pressure over the Southeastern U.S. also allowed birds to move south but migration densities were much more diffuse. Migration was also evident across the western U.S. all the way to the Pacific Coast. Birders along the aforementioned front this morning should be on the lookout for high densities of birds locally.

Right now my computer is on the fritz, showing it’s age and having a really hard time handling the radar processing and timely posting. Until I can get a new one, I’m going to have to scale back posting the radar. I’m sorry for any inconvenience.

national composite nexrad from around 11:00pm on 9/10/13
National Composite NEXRAD from around 11:00pm on 9/10/13

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

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

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

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

Migration in full swing

National overview

Conditions across the U.S. continue to favor nocturnal migration in all but a few locales. A frontal system draped across the Atlantic did cut off Peninsular Florida from the bulk of incoming migrants, but otherwise birds were moving in moderate to high densities from New England to Texas, and from Arizona to the Pacific Northwest. The Upper Midwest and Appalachian regions appeared to have the highest densities of migrants moving last night.

national composite nexrad from around 11:00pm on 9/3/13
National Composite NEXRAD from around 11:00pm on 9/3/13

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

Winds over Minnesota were light to moderate northwesterly at altitude above Duluth, fading to light and variable over the Twin Cities. On the surface winds were even less significant (< 5 kt) and north/northwest. This triggered another big night of migration into the Duluth/Superior region while migration over the Twin Cities was only light to moderate and very diffuse. It appears that the next big wave of migrants (most likely the most diverse in terms of Neotropical warblers) made it into the northern reaches but not all the way down into the central part of the state. It will be interesting to see whether this is reflected on the ground 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

As above, migration into Wisconsin was higher to the north and got more and more diffuse as birds moved south through the state. Expect birds to be dispersed across the state this morning with higher concentrations at the more consistent fall hotspot locations (such as Pheasant Branch in Middleton, or some of the lakeside patches around Milwaukee).

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

Again, migration was lighter last night than in previous nights suggesting that keeping the migration doors open has thinned out the population of migration-ready birds across the region. Northwest winds do appear to have pushed birds into the Chicago area suggesting that birding conditions at inland and coastal hotspots should be decent this morning.

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

Widespread migration continues across U.S.

National overview

As the latest cold front marches across the U.S., birds took to the sky once more last night. My computer is on its last legs and is taking forever to download and process the data, so I’m very short on time this morning. Here’s the radar for your interpretation!

national composite nexrad from around 11:00pm on 9/2/13
National Composite NEXRAD from around 11:00pm on 9/2/13

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

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

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

(note Chicago radar is still down)

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

Birds birds birds

National overview

The national synoptic map is full of weak frontal systems creating a hodgepodge of lackluster weather events. This translates to migration conditions across the country ranging from mediocre to optimal. It’s worth checking out the loop from yesterday afternoon through current time on Paul Hurtado’s NEXRAD archive here. Migration was heaviest in the center of the country, sandwiched by two stationary fronts. Also heavy was the migration over the Upper Midwest, northwest of the stationary front, where winds were more northwesterly and favorable. Migration was evident from coast to coast with some of the heaviest migration of the season so far for the Western U.S. The Northeastern U.S. and New England experienced the least migration with suboptimal conditions in terms of winds and atmospheric disturbance prevailing.

national composite nexrad from around 11:00pm on 8/31/13
National Composite NEXRAD from around 11:00pm on 8/31/13

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

Little moved last night immediately after sunset, as a front was passing over both Duluth and the Twin Cities. It only took a moment after passage, though, for the migrant swarm to move into the region and continue through the early morning hours. With northwest in the wind I would expect Park Point in Duluth to be good this morning. As with Wisconsin Point, the Jaeger show has been pretty great the last few days- so get up (or down) there and find some birds!

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

Northwest winds brought more birds into Wisconsin last night and appear to have pushed some of them up against Lake Michigan early this morning. Birders along the lake should hit lakeshore migrant traps first thing this morning. Over La Crosse the radar indicated a small early pulse followed by birds behind a passing front arriving into the La Crosse region this morning. Birders in the region should check out forest patches within the city, as well as hotspots along the river for newly arrived birds. Further north another large arrival of migrants followed a passing front, suggesting conditions at Wisconsin Point will be good for concentrating birds along the roadside out to the point. Aside from that, the Jaeger show from Wisconsin point has been spectacular the last few days including at least one Long-tailed Jaeger seen and photographed well. This is a great time to get up there and scan the lake, especially given the wind forecast through Monday!

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

Unfortunately the Chicago radar was down last night so we don’t have any way to visualize it directly, but given the push of bird evident on the Milwaukee, WI radar there is a high probability of bird concentrations throughout the lakeshore migrant traps around Chicago. Migration over Iowa was widespread and dispersed last night suggesting birds will be spread across the landscape today. For those of you birding throughout northern Iowa, look for woodlots in a matrix of agriculture for the greatest concentrations of migrants 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.

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

Birds on the move again

National overview

Birds were on the move again across much of the Southeast, Upper Midwest and Western U.S. last night. The heaviest flights continued to be over the Upper Midwest and Eastern Plains following the passage of the most recent cold front across the middle of the country.

national composite nexrad from around 11:00pm on 8/30/13
National Composite NEXRAD from around 11:00pm on 8/30/13

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

Heavy migration again over Minnesota with light northeast winds overnight. Birds appear to have been moving due south across both radars suggesting they’ll be dispersed across the landscape this morning. Expect migrant traps around the Twin Cities and along the north and south shores of Lake Superior to be holding new 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

Heavy migration continued across Wisconsin last night as well, again with northeast winds pushing most of the birds inland off of Lake Michigan. Birds at high altitudes were less influenced by winds and tended to be migrating on a more NW->SE trajectory (see the La Crosse velocity loop for an extreme example of this). Given the general flight direction and northeast winds on the surface I expect inland migrant traps to be best this morning. For instance, Pheasant Branch in Middleton should see a noticeable bump in density and diversity today.

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

Heavy migration made its way down into Iowa and Illinois this morning as well. See the Wisconsin description for general patterns. I expect inland hotspots around Chicago, such as Palos Woods, to be hopping this morning.

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