25 Mar 2014 PNW Migration Update

As forecast, the low pressure trough is moving into the Pacific Northwest.  Ahead of it are the south winds and the migrants took advantage of the free mileage.  The advancing cloud cover obscured the western part of the flight but the HC scan tells the story.  Another night of heavy migration in the main, reaching 20+ dBX returns.

San Diego and Central Valley listservs are lit up with FOS reports and the consensus is that migrants alongn the Pacific Flyway are a bit ahead of schedule this year.  As David says, “look busy, birds are coming!”

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

25 Mar Base Reflectivity - Portland (KRTX)

25 Mar Base Velocity - Portland (KRTX)

25 Mar HC - Portland (KRTX)

Here is Paul’s archived National Radar Composite from yesterday. A few pockets of activity here and there in the Gulf States.  But again the real action is out here in the west.  From Yuma to Seattle birds are on the move.  Check out the Wind Map

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