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.
