02 May 2014 PNW Migration Update

There is a set of perfect conditions in place.  The high pressure ridge is sliding off to the east and a well organized low is just off shore.  At the interface are clear skies and strong south winds.  Migrants are making bank tonight.

In town are: Warbling Vireos, Yellow-breasted Chats, Western Tanagers, Black-headed Grosbeaks, Purple Martins — oh my, it’s like a candy shop out there.  I haven’t checked the listserves yet this morning, but Lazuli’s can’t be far behind.   Swainson’s Thrush are just around the bend as well, possible vanguards have already been reported.  I can already hear the “Wheee Eeer” and “Fitz Bweh” of Pewee’s and Willow  Flies in chambers of my mind.

Pacific Northwest Radar: (Click on the links below to open the .gif files in a new window)

02 May Base Reflectivity - Portland (KRTX)

02 May Base Reflectivity – Gray’s Harbor (KLGX)

02 May Base Reflectivity - Seattle (KATX)

Here is the grand view of the winds aloft from Earth:

02 May Earth: WPD at 850 mb

Here is Paul’s archived National Radar Composite from yesterday. Look at the wind map, and then the radar. All will be revealed.

And here are the weather maps (click on any image to bring up a full gallery view)

Next update is planned for Monday, 05 May.

“birds are coming, look busy” – D.L.