Looks like a good day for more Mountain Chickadees, Mountain Bluebirds, and Stellar's Jays. Cassin's Finches? But I wouldn't bet on northern, eastern, or southern rarities in Boulder tomorrow. (and what's that huge low up in northern Canada?)
On Saturday, October 10, 2020 at 1:32:24 PM UTC-6 Bryan Guarente wrote: > 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/fc964c53-5bf7-460f-bc32-1ccb6bd422cbn%40googlegroups.com.
