Migrant fallouts through the Front Range

[David Tønnessen]

Hey Birders,

Large movement on radar last night combined with the rainy conditions with low clouds throughout much of the Front Range today provide excellent conditions for grounding migrants. Get out if you can!

Good luck,

David Tonnessen

Colorado Springs

[Bryan Guarente]

This is a great observation David!  

To keep an eye on the possible "fallout" locations, check out the surface observations here: 

http://weather.rap.ucar.edu/surface/displaySfc.php?region=den&endDate=20180502&endTime=-1&duration=0

In this image, you will see real meteorological observations from many towns across Colorado and into the surrounding states.  The stick coming out of the dot is the important part for today.  That indicates the direction the winds are coming from.  For more information about this, you can go here: http://ww2010.atmos.uiuc.edu/(Gh)/guides/maps/sfcobs/wnd.rxml

On that map linked above, look for areas in Eastern Colorado (away from the mountains) where the wind barbs are collectively pointing toward each other, that is where you may want to go birding.  If you watch this map throughout the day, that location will change and may go away.  If it stays in place for many hours at a time, this would be a great place to go looking.  

As of right now, the convergence of the wind barbs is pointing to a line from about Chatfield Reservoir through Last Chance (and maybe farther east). 

Get out and do some searching.  There are probably plenty of birds out there to find in all locations, but if you wanted the biggest bang for your buck, going to this convergence line would likely be best.

Bryan

Bryan Guarente

Meteorologist/Instructional Designer

UCAR/The COMET Program

Boulder, CO

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[David Tønnessen]

Excellent info and resources, Bryan! Thank you.

David

On Wed, May 2, 2018, 10:40 AM Bryan Guarente <bryan.g...@gmail.com> wrote:

This is a great observation David!  

To keep an eye on the possible "fallout" locations, check out the surface observations here: 

http://weather.rap.ucar.edu/surface/displaySfc.php?region=den&endDate=20180502&endTime=-1&duration=0

In this image, you will see real meteorological observations from many towns across Colorado and into the surrounding states.  The stick coming out of the dot is the important part for today.  That indicates the direction the winds are coming from.  For more information about this, you can go here: http://ww2010.atmos.uiuc.edu/(Gh)/guides/maps/sfcobs/wnd.rxml

On that map linked above, look for areas in Eastern Colorado (away from the mountains) where the wind barbs are collectively pointing toward each other, that is where you may want to go birding.  If you watch this map throughout the day, that location will change and may go away.  If it stays in place for many hours at a time, this would be a great place to go looking.  

As of right now, the convergence of the wind barbs is pointing to a line from about Chatfield Reservoir through Last Chance (and maybe farther east). 

Get out and do some searching.  There are probably plenty of birds out there to find in all locations, but if you wanted the biggest bang for your buck, going to this convergence line would likely be best.

Bryan

Bryan Guarente

Meteorologist/Instructional Designer

UCAR/The COMET Program

Boulder, CO

On Wed, May 2, 2018 at 9:24 AM, David Tønnessen <davidto...@gmail.com> wrote:

Hey Birders,

Large movement on radar last night combined with the rainy conditions with low clouds throughout much of the Front Range today provide excellent conditions for grounding migrants. Get out if you can!

Good luck,

David Tonnessen

Colorado Springs

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