Hey COBirders, Back again for some good news migration forecast updates... Thursday morning at 6am: https://earth.nullschool.net/#2023/10/26/1200Z/wind/isobaric/850hPa/orthographic=-104.86,48.22,1404/loc=-105.120,40.191 (Green circle is Longmont)
That link above looks like we should see an interesting local push of migrants from northeast of us (Manitoba, ND, SD, NE) tomorrow morning. Concentrations would be highest around the Palmer Divide. Later in the day though, this changes to the northern Front Range overall with a strong convergence northwest of Cheyenne. Here is that map, Thursday afternoon 2pm: https://earth.nullschool.net/#2023/10/26/2000Z/wind/isobaric/850hPa/orthographic=-104.86,48.22,1404/loc=-105.120,40.191 (Green circle is Longmont) Not long after that though, the migration pattern changes from out of the NE to out of the NW with a long trajectory from well into Canada. 10pm Thursday evening: https://earth.nullschool.net/#2023/10/27/0400Z/wind/isobaric/850hPa/orthographic=-104.86,48.22,1404/loc=-105.120,40.191 (Green circle is Longmont) And from then on the winds are NW with a long trajectory from Canada, but there is no specific area of concentration of birds in CO, just general migration, but a long distance connection. So this means get out there and see if you can find the concentrations of birds based on food sources/good habitat. Then later into Friday, here comes the precipitation and along with it easterly winds which should drive the birds toward the Front Range. Here is a representative Saturday look to show you generally what the birds will be working with in terms of migration. https://earth.nullschool.net/#2023/10/28/1200Z/wind/isobaric/850hPa/orthographic=-104.86,48.22,1404/loc=-105.120,40.191 This day doesn't look great for migrants coming in from long distances, but does look good for redistribution of birds into the Front Range where hopefully you will be out looking. Some of the birds that were deposited into the Eastern Plains of CO could get redistributed toward the Front Range for your viewing pleasure. Good luck out there! Bryan 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 post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/cobirds?hl=en?hl=en * All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate * Join Colorado Field Ornithologists https://cobirds.org/CFO/Membership/ --- 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/CAENnWHu8ESbB%3D4BUkmkVJzfs1EBTMHoHvKNnt6cgcQ1iU_9jag%40mail.gmail.com.
