24 May 2017 – PNW Migration Update

The RTX loop from last night shows what migration looks like as it begins to wind down.  Pretty decent conditions and diminished movement.  But there are still birds in the pipeline as the radar from Medford (MAX) shows.

Another sign that the end is nigh — predawn Violet-green Swallows twittering (not Trump’s type of twittering) in the dark sky above.

Today’s wind map shows two things — the first is the advance of another high ridge; could get windy out of the north as it advances.  The second is the pressure differential between the east side and west side of the northern Cascades.  Hey Seattle — that’s where your winds are coming from.  Check out Cliff’s excellent ‘explainer’ on his blog today.

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22 May 2017 – PNW Migration Update

Our ridge of high pressure is holding and we should have another day or two of this exceptional weather.  There is a deep trough behind it that we need to keep an eye on though.

Last night was another good night for night flight.  It petered out in the northern portion of the I5 corridor but still decent.  Medford had one of it’s best nights of the season.  So, i’m putting up the I5 radar loops; Medford to Seattle in today’s gallery.

I didn’t find any Willow Flycatchers this weekend but they are definitely filling in as seen HERE. I did come across my first Lazuli Buntings, but they have been here a couple of weeks now; i just can’t get out into the field as often as i like.  HERE is their map.