Tues 11 Oct 2011

First image is of the winds aloft at 850 mb (approx 5000 ft). Heavy west winds offshore and easing a bit over land.  Combined with plenty of precipitation and the birds are not going to move.

Second image is of the surface winds and pressure.  A fairly strong low pressure system off the coast of BC has developed which is bringing the cold arctic air down behind it and running it westward below it.

Third image is the animated gif with snapshots every half hour of the base reflectivity above radar station RTX.  Just rain — no birds last night.

Animation runs from around 8:00 pm pdst yesterday evening through 5:00 am pdst this morning. (Click on the thumbnails to view the full-sized images and animation.)

Sunset last night was at 6:34 pm pdst.

Good birding!