With the frontal passage expected tomorrow morning around sun-up, expect that the migrant turnover will be in full swing. The birds that are ready to move out at this time of year will make a strong push southward on the north winds expected tomorrow morning with the cold frontal passage. Behind the front, we are initially limited in terms of the number of new long-distance migrants we should be expecting.
October 22 6am: https://earth.nullschool.net/#2020/10/22/1200Z/wind/isobaric/850hPa/orthographic=-105.12,40.19,1704/loc=-105.116,40.193 Note that the winds aren't originating from that far away from CO. Then as the day goes on we should expect a change in the migrants we could expect. October 22 12pm: https://earth.nullschool.net/#2020/10/22/1800Z/wind/isobaric/850hPa/orthographic=-105.12,40.19,1704/loc=-105.116,40.193 By noon, we should be linked up with the stronger push of migrants from the north winds. Looks more like migrants from Great Bear Lake as possible origins. I am hoping for a first push of the northern gulls and maybe a jaeger if you get lucky. Best of luck if you go out tomorrow. I keep thinking about an analysis of the Ruddy Ground Dove situation, but haven't had the time yet. Thanks for any reports tomorrow. Bryan <https://earth.nullschool.net/#2020/10/22/1800Z/wind/isobaric/850hPa/orthographic=-105.12,40.19,1704/loc=-105.116,40.193> Bryan Guarente Meteorologist/Instructional Designer UCAR/The COMET Program Boulder, CO -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/CAENnWHuOo7Gz73L8s5UxrLKGYn-nMuf0uvx4f_hZtv6QmRMUFw%40mail.gmail.com.
