Posted by: NatureIsAwesome | April 19, 2013 @ 1:15 pm

Under the Influence of High Pressure

National Overview

Below is a snapshot of the national map with radar and weather fronts. Use this map to get an overall feel of migration and how weather affects nocturnal migration. High pressure is still in control; birds took advantage of southerly winds and took to the skies! Large numbers of birds were migrating over the state ahead of the forecast cold front.
04_19_2013USMAP

Frames are every 1/2 hour. Click on the thumbnail to view the full-sized animation.
Base Reflectivity image from Tampa Bay, FL Base Velocity image from Tampa Bay, FL Base Reflectivity image from Miami, FL Base Velocity image from Miami, FL Base Reflectivity image from Key West, FL Base Velocity image from Key West, FL

*Sorry for the late post, we experienced issues with downloading the radar today*
Southeast winds ahead of the incoming cold front sparked off a big flight over the state. High pressure was still in control, but that is about to change overnight. A cold front has been marching its way east and by morning was over the panhandle. Birds could be concentrated in the western panahndle as the front rolled in at the right time to slow migrants from advancing and thus suspending their progress north; check out migrant traps in this area. Clear skies and southerly winds over Cuba and the Caribbean were just what birds were looking for. Migrants were recorded on all FL radar sites moving N-NW in a rush. Key West and Miami radar shows birds moving SE->NW, Tampa radar shows birds flying over the coast moving S->N as did Jacksonville radar. Birds were flying high over the state and likely made it over FL and headed north to the Appalachians. Not much precipitation overhead last night to put down birds, most migrant traps south of the western panhandle will be low on birds today. As the cold front moves east chances of precipitation are enhanced, winds behind this front will be N-NE and will shut down migration behind the front. Birds that are coming from the south tonight will find themselves flying into this wind over Central FL; a strong headwind may drop out migrants overnight. Fallout conditions looked better in the forecast, but the squall line associated with this front is sort of weak and thin. We expect the weather service to change the chance of precipitation in the forecast as the front approaches the Gulf Coast of the state. This means that if the winds don’t put down birds we can’t bank on the rain to do so. We will keep an eye out for any changes of the forecast and will try to post more, later in the afternoon.

As always Badbirdz depends on its readers to help us understand the magic of bird migration. We ask our readers to take a minute to email us at badbirdz-reloaded@hotmail.com, post a comment on the site or share what you are seeing on our Facebook page. As a whole the Florida birding community is large and enthusiastic about bird migration, lets join together this year to make Badbirdz an integral part of every birders toolbox. Together we can track and monitor birds and learn more about this phenomenon called MIGRATION!

Nature is Awesome,
Angel and Mariel

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