25 Apr 2014 PNW Migration Update

Our local KRTX radar went down last night around 10 PM PDT.  However, from what we can see migrants took advantage of the settling low, WSW winds and rainless night.  Moderate levels of birds were in route north.  There should be decent turnover at your favorite patch today.  I’m not really sure of what to make of this current weather pattern going into the weekend.  It looks like another trough will build and dip down into the PNW as the current  one slides off to the SE.  So there is a chance that the transition will take place Saturday evening.  That could provide a nice window of favorable conditions for migration: relatively clear skies and SSW winds.  It’s all about timing.

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

25 Apr Base Reflectivity - Portland (KRTX)

25 Apr Base Reflectivity – Gray’s Harbor (KLGX)

25 Apr  Base Reflectivity - Seattle (KATX)

And because it is always a treat to watch the flight over the straits of Florida here is the Reflectivity loop from Key West last night:

18 Apr Base Reflectivity – Key West (KBYX)

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

23 Apr  Earth

Here is Paul’s archived National Radar Composite from yesterday. Seriously, look at the wind map, and then the radar.  It is self explanatory without comment.

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

Next update is planned for Monday the 28th.

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