18 October 2017 – PNW Migration Update

The slowing of migration continues.  In fact it is barely noticeable in the Portland area.  So we’ll take a look at the ATX (Seattle) radar where the migration returns are more pronounced, especially across the Strait.

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06 October 2017 – PNW Migration Update

FTMRTX
Message Date: Oct 05 2017 16:24:38
The Portland National Weather Service Doppler Radar will be down periodically fo
r routine maintenance until around noon. PT 10/05/2017 924 am PDT 1624 UTC.

FTMRTX
Message Date: Oct 06 2017 00:09:15
Doppler radar KRTX, serving NW Oregon and SW Washington, will be out of service
for unscheduled maintenance. A return to service is unknown at this time, but is
expected to be Friday.

Sheesh.

I’m not seeing any new reports except a Palm Warbler invasion along the coast.  I have noticed a sizable increase in pink-footed gulls around the metro area however.

The Seattle radar shows the same pattern as yesterday; good movement across the Strait, probably duck outflow from Nisqually, and use of the western flanks of the Cascades.  We haven’t really had any spectacular “green doughnut” days this fall so let’s take a look at Duluth MN to remind us of what that looks like.

While poking around Twitter i came across a very interesting abstract that may be of interest: HERE.

Innovative Visualizations Shed Light on Avian Nocturnal Migration

A bunch of science types put together an open source visualization package that ends up with something like this:

Pretty cool!  Maybe i can figure out how to use this research.  But not this year, maybe a winter time project.

05 October 2017 – PNW Migration Update

RTX is still down.

Long-billed Dowitchers and American Pipits are being reported in movement type numbers.  Same with Turkey Vultures.

The Seattle Radar shows moderate to heavy migration in places.  Most noticeably along the Strait,

04 October 2017 – PNW Migration Update

00
NOUS66 KPQR 040345
FTMRTX
Message Date: Oct 04 2017 05:28:01

As of 0525 UTC Wednesday, October 4, 2017, KRTX radar continues to experience si
gnificant technical issues which prevent the reliable operation of the radar.

And so it continues … bummer.

So, up in Seattle there was a light to moderate migration signature.  Nationally a squall line from New Mexico to Michigan held up some birds; most pronounced in the norther sections.

02 October 2017 – PNW Migration Update

NOUS66 KPQR 010407
FTMRTX
Message Date: Oct 01 2017 04:08:15

As of 0400 UTC Sunday, October 1, 2017, KRTX radar continues to experience signi
ficant technical issues which prevent the reliable operation of the radar. Howev
er, KRTX has been repaired to the point where NWS Portland can run the radar a f
ew minutes at a time before KRTX fails again. Until further notice, this will on
ly be done for testing purposes or if threatening weather approaches. /Weagle

Yeah, that sucks.

On the ground:

Timothy Lake had tons of Western Grebes, reports of dozens of Common Loons on Saturday but i didn’t see any on Sunday but it was raining pretty steadily, Barrow’s Goldeneye are still on the lake and a lone Red-necked Grebe was seen.

On the valley floor Varied Thrush and Dark-eyed Juncos are moving in, i saw, and most remarkably heard still singing a Ruby-crowned Kinglet, Fox and Golden-crowned Sparrows are increasing in numbers, Cackling Geese are being reported into the thousands, Sandhill Cranes are into the hundreds, a few Mallard and Green-wing Teal males are coming out of eclipse, House Wrens and Western Wood Pewees are apparently gone.  Still no reports of Buffleheads.

Since RTX is down i’m throwing in the loop for ATX (Seattle).  We still have solid movement through out the Sound and most noticeable across the Strait.

27 September 2017 – PNW Migration Update

000
NOUS66 KPQR 251949
FTMRTX
Message Date: Sep 25 2017 20:26:11

KRTX HAS SUFFERED A HARDWARE FAILURE AND WILL BE DOWN UNTIL FURTHER NOTICE.

 

Well, that explains the wonkiness.  I still haven’t caught up on migration news on the listservs but i would expect the duck and geese numbers to be up.  It is also the height of the diver migration, loons, grebes and diving ducks, in the High Cascades so a trip to Timothy Lake may be in order this weekend.

Without RTX on line we’ll take a look to the north at ATX and it was a wild night.  Heavy migration across the whole region.

Nationally, all flyways were packed with birds especially the Mississippi.

07 September 2017 – PNW Migration Update

Migration continues to be light across the region.  I’m sticking with the Seattle – ATX loop for today because: …

there is a curious morning flyout along the Sound where the Skagit River delta is.  It starts around 13:23 UTC (06:30 AM PDT) and lasts a little more than a half an hour.  I would guess a roost of Barn Swallows like the one along the Willamette River in southern Yamhill County.

Speaking of which; that roost’s flyout is also visible at dawn but it is not as dense as the one up in the Skagit delta.  In the years watching the Yamhill roost i never remember seeing it hit the 30+ dBZ range like the Skagit signature.