27 September 2013 Migration Report

The weather forecast from yesterday held and the birds had ample opportunity to ride the favorable conditions south — and they did.  Another night of heavy migration across the Pacific Northwest.  It was cut a bit short along the Olympic Peninsula as a set of squalls came ashore.

Looking at the geopotential forecast we probably have another 12 to 24 hours left before the ridge breaks down and winds will be shifting.  Looks like they will be coming out of the west at first (good sea watch weather) before the low dips a bit further south and starts throwing southwest winds, and some rain, at the migrants.

Here is the local KRTX Reflectivity loop
Here is the local KRTX Velocity loop
Here is the Regional Composite
And Paul’s National Composite is back on line.