30 May 2014 PNW Migration Update

This is the last update for the season.  With a bit of luck i’ll be back in the fall.

And we close with a stream of feathers in the sky.

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

30 May Base Reflectivity - Portland (KRTX)

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

30 May Base Reflectivity - Seattle (KATX)

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

30 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.

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

29 May 2014 PNW Migration Update

Some rather unstable weather, WNW winds, it’s late in the season …. and still there is a sea of feathers overhead.  Well, maybe just a puddle, but impressive none the less.

As the high pressure ridge builds in behind our recent low we can expect the winds to shift to a more northerly component, but the skies should clear.  So it will depend on the strength of the winds tomorrow night to determine the magnitude of the last covered flight of the season.  I’m hoping the winds are light and the sky is filled with the remnants of the feathered travelers.  The past few nights i have regularly heard the nocturnal flight calls of Swainson’s Thrush – it’s comforting, and brings a bit of joy to my world.

Before we take a look at the loops: “Message Date: May 28 2014 15:26:44 KRTX MAY HAVE PERIODIC DATA LOSS TODAY FROM 28/16Z THROUGH 29/02Z DUE TO AN AWIP S UPGRADE AT WFO PORTLAND.”

I have no idea what that means and i don’t really see any problems in the loop, but some more discerning eye might so, there you have it.

29 May Base Reflectivity - Portland (KRTX)

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

29 May Base Reflectivity - Seattle (KATX)

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

29 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.

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

28 May 2014 PNW Migration Update

Less than ideal conditions, but nothing extreme.  A light westerly wind and a few rain cells to dodge – that’s about it.  So the laggards continue to lay a line north.  Densities are dropping as we are on the last legs of the journey.

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

28 May Base Reflectivity - Portland (KRTX)

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

28 May Base Reflectivity - Seattle (KATX)

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

28 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.

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

27 May 2014 PNW Migration Update

Winds are light and out of the west — no big deal.  Migrants continue to flow north and are now looking to fill in the remaining nesting sites.  “FOS” is a term of the past on the listserves.  In eastern Oregon a number of expected vagrants are taking up bandwidth as birders flock to Malheur NWR as surely as Buffleheads fly to Manitoba.

This will be the last week for updates this season — unless something mega turns up in the region.

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

27 May Base Reflectivity - Portland (KRTX)

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

27 May Base Reflectivity - Seattle (KATX)

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

27 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.

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

22 May 2014 PNW Migration Update

Migration in the region last night was a bit reduced from yesterday.  It could be the north winds were slightly stronger and it could be we are running out of birds.  Probably a little of both.  You can see the intensity dropping across the country.  With a second report of Nighthawks it’s pretty much what you would expect.

Next migration update is planned for Tuesday 27 May. I’m taking off for a long weekend.

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

22 May Base Reflectivity - Portland (KRTX)

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

22 May Base Reflectivity - Seattle (KATX)

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

22 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.

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

21 May 2014 PNW Migration Update

As the high pressure ridge moves ashore winds are out of the north.  Along the coast they are quite stiff and probably accounts for the paucity of coastal returns on the Gray’s Harbor (KLGX) radar last night.  But inland, the winds are light and the I5 corridor was lit up as the flight north continues.

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

21 May Base Reflectivity - Portland (KRTX)

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

21 May Base Reflectivity - Seattle (KATX)

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

21 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.

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

20 May 2014 PNW Migration Update

Birds are still moving north.  Winds, with a northerly predilection, are exceedingly light, and pose no real barrier.  Migration season is getting a little long in the tooth here.  It’s not over by any means.  There’s still thousands of laggards to move through, but most of the vanguards have passed through or are settling down. Let’s take a look at the radar and marvel at the wonder of it all.

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

20 May Base Reflectivity - Portland (KRTX)

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

20 May Base Reflectivity - Seattle (KATX)

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

20 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.

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

14 May 2014 PNW Migration Update

Light variable winds, clear skies and a biological demand to head north.  That’s a great stage for the drama of migration to unfold.  Sit back, relax and enjoy the show.  With the full moon it’s a great time to do some moon watching.

(KATX – Seattle radar is still off line.)

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

14 May Base Reflectivity - Portland (KRTX)

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

14 May  Base Reflectivity - Medford (KMAX)

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

14 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.

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

13 May 2014 PNW Migration Update

The high pressure ridge remains in place.  The winds are light and a bit variable.  Birds are seriously on the move.  Maybe this push will bring those Willow Flies.

KATX is still down: “Message Date:  May 12 2014 14:29:23
THE CAMANO ISLAND RADAR KATX IS EXPECTED TO REMAIN OUT OF SERVICE THROUGH MOST OF TUESDAY. PARTS ARE ON ORDER AND ARE EXPECTED TO ARRIVE TUESDAY.”

We’ll look at Medford (KMAX) in today’s loops.  It’s jamming again.

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

13 May Base Reflectivity - Portland (KRTX)

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

13 May  Base Reflectivity - Medford (KMAX)

Today I’m putting the wind map from Earth and a screen grab from the National Composite in the gallery view along with the weather maps. Migration and weather explained in just a couple of pictures. Well, not explained. Perhaps illustrated is a better word.

09 May 2014 PNW Migration Update

The low pressure cell has slid down the coast of BC a bit and the winds are now mostly westerlies.  Lots of rain.  Not much migration.  There are always birds trying to pick through and we can see them in the loops and confirm they are most probably birds in the  HC loop.

This is a pretty well organized and slow moving low.  I think we’ll be looking at more rain and north winds for a couple more days.  The rain might let up earlier but the north winds probably wont.  So it’s probably going to slow down the migrants a bit over the weekend.

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

09 May Base Reflectivity - Portland (KRTX)

09 May HC - Portland (KRTX)

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

09 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.

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

Next update is scheduled for Monday the 12th.