[texbirds] Monitoring spring bird migration in the western Gulf of Mexico region using NEXRAD weather radar
- From: "John Arvin" <jarvin@xxxxxxxx>
- To: "New Texbirds" <texbirds@xxxxxxxxxxxxx>, "TX-Ornithology" <TX-ORNITHOLOGY@xxxxxxxxxxxxxxx>, "LABIRD-L" <LABIRD-L@xxxxxxxxxxxxxxxx>
- Date: Sat, 20 Apr 2013 12:30:24 -0500
I checked last evening expecting some lift-off imagery from the trans-Gulf
flight (those that made it; according to reports there was heavy mortality)
grounded by the front on Thursday, but no heavy traffic was apparent. Today
the upper winds are already E and light except at New Orleans where they
are NE and still rather stiff. Tonight there should be a big lift-off
beginning about 45 minutes after sunset. What I did see was some activity
from inland stations, especially up through central Texas. This was borne
out by the presence of lots of Nashville Warblers in the treetops around my
house early this morning. Nashvilles are mostly circus-Gulf migrants.
As expected there is no significant bird activity on NEXRAD at midday.
There should be still numbers of grounded birds through late this afternoon
but I think a lot will leave as soon as it gets dark. There will be
hold-overs tomorrow for sure, but today is the day to be in place.
John C. Arvin
Research Associate
Gulf Coast Bird Observatory
103 West Hwy 332
Lake Jackson, TX 77566
jarvin@xxxxxxxx
www.gcbo.org
Austin, Texas
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