It might be the winds out of the south or it might be that we’re getting a little long in the tooth, but the migration last night was pretty weak. Best action was up against the spine of the Cascades.
Strong winds out of the south and widespread rain developing over night; pretty crappy conditions for migrants. But at low levels, especially early in the evening, some birds were on the move. Taking a look at both the Base Reflectivity and the Hydrometeor Classification loops we can see, even in adverse conditions, some birds continue to pound south. Probably the strong flying waterfowl.
As expected from what we saw yesterday the south winds continued through the night with scattered rain cells. And, very low levels of migrants passing through.
So lets take a look at the National Composite because there has to be some action going on somewhere. Looking at the wind map we can see the Central Flyway pretty much shut down and the best conditions are in the Mississippi and southern Atlantic Flyways.
And the radar shows:
I suppose the weekend was the time to be looking at the radar, but i take the weekends off and spend them in the field instead. I did find my first Buffleheads of the season – a really good sign the migration is winding down. No males yet, but still …
Last night, in the face of southerly winds, we had very low levels of migrants in the airspace.
It looks like we are in for another system – it’s just offshore now.
Good News! KRTX is back on line!
Last night we had moderate amounts of migrants in the skies from Vancouver Island and down the I5 corridor. Winds were light and out of the west. Not too big of a problem.
The folks at The College of Dupage are on the ball.
“It appears that the KRTX radar has suffered a hardware failure and is expected to be down a little longer. Here is more information from that NWS office itself: http://forecast.weather.gov/product.php?site=NWS&issuedby=rtx&product=FTM”
Following that link we find:
“KRTX update: Local technicians have determined there was major failure of a critical component. Technicians from the Radar Operations Center in Norman Okalahoma are expected to arrive Tuesday for further diagnosis. KRTX may be unavailable through at least Friday.”
So, there you have it.
It’s been a rather crappy week or two for watching radar returns for migrants. They have been on the move but only visible in the Hydrometeor loops and even then at low densities and opportunistically.
Now it seems KRTX – the Portland area radar is off line! So, here is a static shot of the National Composite. The Atlantic Flyway was screaming last night. And you can see the lack of returns from RTX. I hope it is just maintenance.