I agree with Rob, Bryan. Anecdotally, I kept an eye on a couple of my patches on Tuesday, given your "migrational turnover" weather forecast. Wouldn't you know it -- I had a yardbird first of 7 Chipping Sparrows at home off Colfax in very urban east-central Denver, and a FOS Ruby-crowned Kinglet and an unexpected Osprey soaring overhead, both in Denver City Park about a mile from home. Thanks again for your interesting and informative posts.
Patrick O'Driscoll Denver On Wed, Apr 22, 2020 at 4:55 PM Robert Raker <[email protected]> wrote: > Your reports are are excellent and the information well presented and very > interesting to us non-meteorologists. Thanks so much and would love to see > them continue! > Robert Raker > Lakewood, CO > > On Monday, April 20, 2020 at 9:56:31 PM UTC-6, Bryan Guarente wrote: >> >> COBirders, >> Looks like tomorrow should be a good day for migrational turnover. >> Expect that birds from farther south will have a chance to migrate through >> the area on stronger southerly winds (FROM the south) originating from >> OK/TX. Unfortunately, there isn't a strong convergence zone that would >> help condense the birds into certain locations. You can expect convergence >> of birds nearer the foothills than farther east as the mountains act as a >> natural convergence area when southeast winds are dominant. This doesn't >> preclude the fact that good habitat attracts birds better than bad >> habitat. So it can always be worthwhile to check your patch multiple times >> on a day like tomorrow (4/21) >> >> Yesterday (4/19) and today (4/20), the winds aloft have been very weak >> promoting more soaring-bird migration but still allowing direct flight >> migrations as well with less wind support to cover ground. Tonight and >> into most of tomorrow (4/21), expect the winds to be stronger aloft and >> from the south for most of the day making for a stronger possibility of >> turnover of birds. >> >> >> https://earth.nullschool.net/#2020/04/21/1200Z/wind/isobaric/850hPa/orthographic=-105.00,40,1897/loc=-105.00,40 >> (The >> green circle is on Boulder for reference only) >> >> I hope you can get a chance to get out (I know it is a work-day) for at >> least a walk in your local patch. You should have a nice opportunity for >> some new birds (First-Of-Year/First-Of-Season), but they may not stick >> around for long with continued south winds throughout the day into the >> night unless your patch has good habitat and food. >> >> May the meteorology bless you tomorrow with birds. Remember positive and >> negative data are both useful to help us understand the overall meshing >> between bird migration and weather patterns, so let us know what happens >> for you tomorrow. Best of luck. >> >> 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/67bdbcde-16ee-473b-ada5-249d0542a887%40googlegroups.com > <https://groups.google.com/d/msgid/cobirds/67bdbcde-16ee-473b-ada5-249d0542a887%40googlegroups.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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/CAMNEzJOe2JLBmnjLQwtLgbM5qXqB2cM9W_1CjQdAWd8EPx8fyQ%40mail.gmail.com.
