[Tweeters] Radar Birding-Take a look at the Radar from last night.

ray holden rayleeholden at yahoo.com
Tue Sep 22 12:56:28 PDT 2015


Take a look at this Portland Blog showing the radar signature of the bird migration over Seattle last night.  He confirms that the voices in the night were a massive push of greater white fronted geese a couple of nights ago. 

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| birds over portlandcourtesy of the pacific flyway |

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| View on birdsoverportland.wor... | Preview by Yahoo |

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You can take a real time look tonight by at Seattle NEXRAD and Ocean Shores NEXRAD. (Langley Hill).  On a clear night we know the return isn't rain.  The colors you see are birds.  Massive amounts of birds. On the left side is the control panel.  The first picture you see is Composite Reflectivity. Click on loop to watch the migration in motion.  Click on Velocity loop.  You should see green to the North (top) and Red to the South (bottom).  Green means the objects are moving toward the radar and Red away.  North to South in the Fall.  The opposite next Spring.  Check the colors against the scale on the right to find the average speed the birds are showing. Last night it was 20 Kts but remember that is just an average.  Scientists are able to separate the data into altitude layers with the fast flyers generally at higher altitudes. 
The show starts at sunset but doesn't get going good until 9-9:30 PM. It peaked last night around 11PM.   And no you can't tell what birds are in the mix.  They confirmed the geese by IDing their calls.  For more information Google Radar Bird Migration.  There are lots of articles and scientific studies on line.  


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| Weather Radar for Seattle-TacomaView animated radar for Seattle-Tacoma and the surrounding region. |

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| View on www.wunderground.com | Preview by Yahoo |

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| NWS radar image from Langley Hill, WALatest weather radar images from the National Weather Service |

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| View on radar.weather.gov | Preview by Yahoo |

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 Ray Holden
Olympia, WA

Life is for the birds.  


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