Hi Bryan – I expect the three White-crowned sparrows that have been enjoying the free lunch here near Storm Mountain in Larimer County since Oct 1st to be gone by Monday! I think the juncos will remain, though. :) - Dave Hyde, Larimer Cty.
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 From: Bryan Guarente<mailto:bryan.guare...@gmail.com> Sent: Saturday, October 10, 2020 1:32 PM To: Cobirds<mailto:cobirds@googlegroups.com> Subject: [cobirds] Not all cold fronts are created equally... COBirders, There is a cold front coming through tomorrow. I think if you were to ask COBirders whether a cold front meant good birds in Fall or not, I think most would say yes, especially if the front comes with precipitation. Go birding in bad weather! On the East slope, tomorrow's cold front won't be wet nor cold, just cooler with some cloud cover. On the West slope, it will be a different story in terms of precipitation. Definitely expecting precipitation. Hopefully this will help with some of the wildfire situations. So today, I am going to try something different. Here is the forecast graphic for tomorrow after the frontal passage (map is from 3pm local time). If you were at my CFO presentation the other day, you would know some of the things to look for in terms of good weather for migrants. Does this look like it will be a good day to get long-distance migrants from Canada? Should we expect dispersing migrants affected by Hurricane Delta? Should we be thinking about tropical species coming up from Mexico and the southwest US? Where do you see the flow pattern coming from that would dictate the birds we might expect? https://earth.nullschool.net/#2020/10/11/2100Z/wind/isobaric/850hPa/orthographic=-105.11,40.20,1064/loc=-105,40 The green circle on that map is around Boulder, CO. Anyone want to play along and give your weather forecast for migrants based on this map? Are you expecting turnover of birds? Are you expecting most birds to stay put, but add other species to the mix with the frontal passage? Is this going to be the pattern that drives even more corvids out onto the Plains? Harder challenge: anyone want to venture a guess about what birds to expect based on the flow pattern? All of the previous questions will be answered by the weather and the birds tomorrow into Monday, but I will wrap up some thoughts later this evening based on what folks have stated to me privately (paraphrased or summarized only) and publicly, plus some of my own words to help move the conversation along. Thanks for playing along, 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 unsubscribe from this group and stop receiving emails from it, send an email to cobirds+unsubscr...@googlegroups.com<mailto:cobirds+unsubscr...@googlegroups.com>. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/CAENnWHsL2wG%3DyEP2yaKA9cro%2B0mXDWfDyJxkSSyc7u0HGH0oWg%40mail.gmail.com<https://groups.google.com/d/msgid/cobirds/CAENnWHsL2wG%3DyEP2yaKA9cro%2B0mXDWfDyJxkSSyc7u0HGH0oWg%40mail.gmail.com?utm_medium=email&utm_source=footer>. -- 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 cobirds+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/CY4PR06MB24401D9B5DFB1A450788D756F5060%40CY4PR06MB2440.namprd06.prod.outlook.com.
