Tuesday, May 12, 2009

Convergence zone has set up already

The convergence zone is already evident over the N. Sound (see radar image). And nice rainshadowing to the south. The showers are also evident over the western slopes of the Cascades. The visible satellite image shows the CZ band as well and offshore you see a field of instability clouds...heading our way that will reinforce the CZ. The best convergence zone events occur in such an environment.

9 comments:

Lance said...

It is cold today! I saw some fresh snow on the snoqualmie pass webcam.

Joan Neslund said...

Holden Village
11 Miles S Stehekin WA
48.2°N 120.75°W (Elev. 3224 ft)
Snowed lightly all day long. Highs in the upper 30's mostly.

Winter summary for the North Cascades. Novemer through mid May227 inches of snowfall and about 11 inches of rain.

Jason said...

OK, let me guess: a whole lot of rain will be coming down on us during the next 24 hrs.

andycottle said...

Hey Cliff, Since I`m off from work Fri/Sat(those are my normal days off), which day you think would the better day to hike at Tiger mountain??

Cause to me and from what I see so far in the models, and also read from the Seattle AFD, is that Sat may be the best day as the forecasted ridge will be nearly on top of us..

Cliff Mass Weather Blog said...

Andy...Saturday will be better....cliff

andycottle said...

Thanks Cliff. I`m still think`n Sat myself! :o)

hwmpg said...

Cliff: I spend a lot of time tending plants out of doors. I remember your show a while back about global warming. When was the last month where the Seattle area averaged ABOVE normal temperatures? Two years ago?

mainstreeter said...

I'm heading east to the Deschutes Canyon rails to trail, so it doesn't matter. It's supposed to be 80 or by Sat.

garyLambda said...

It seems like we've had more of these convergence zone rains in the past few years than I remember happening in the early 80's. We used to joke that only tourists carried an umbrella, and now I do!

It was a nasty ride home on my bike in the rain Wednesday night. Can't remember being that soaked in a long time.