April Weather in the Pacific Northwest

[jcmcgaffey]

It’s also been interesting how this last month has had an ebb and flow to it on a smaller scale. The weather has tended to clear out throughout the week and then the heavier torughs have come through on the weekends. That has been a consistent pattern the last 3-4 weeks.

[TT-SEA]

It’s also been interesting how this last month has had an ebb and flow to it on a smaller scale. The weather has tended to clear out throughout the week and then the heavier torughs have come through on the weekends. That has been a consistent pattern the last 3-4 weeks.

 

Timing does make a huge difference in the overall perception of the weather. 

[Deweydog]

Timing does make a huge difference in the overall perception of the weather.

Timing or Tim-ing?

[El Nina]

Just a reminder of what a good trough can still do this late in the year:

[TT-SEA]

Timing or Tim-ing?

 

Timing.  

[Phil]

The +SIOD is back...and on roids.

 

[TT-SEA]

The +SIOD is back...and on roids.

 

 

 

So repeat of 2017?

[Phil]

So repeat of 2017?

Not over North America or the North Atlantic! As of now, only the Pacific Hadley Cell remains expanded relative to 1981-2010 climo. The IO/ATL z-cell networks have have both contracted equatorward w/ the forcing west of the dateline, and are no longer absurdly large/slow. At long last.

 

Any similarities to 2017 over North America should vanish when the U-winds flip easterly above the tropical tropopause, and the off-equator forcing weakens. Which will happen sometime in JJA, I suspect.

[TT-SEA]

Not over North America or the North Atlantic! As of now, only the Pacific Hadley Cell remains expanded relative to 1981-2010 climo. The IO/ATL z-cell networks have have both contracted equatorward w/ the forcing west of the dateline, and are no longer absurdly large/slow. At long last.

 

Any similarities to 2017 over North America should vanish when the U-winds flip easterly above the tropical tropopause, and the off-equator forcing weakens. Which will happen sometime in JJA, I suspect.

 

 

I was not really expecting a repeat of the year before.  

[Jesse]

Not over North America or the North Atlantic! As of now, only the Pacific Hadley Cell remains expanded relative to 1981-2010 climo. The IO/ATL z-cell networks have have both contracted equatorward w/ the forcing west of the dateline, and are no longer absurdly large/slow. At long last.

 

Any similarities to 2017 over North America should vanish when the U-winds flip easterly above the tropical tropopause, and the off-equator forcing weakens. Which will happen sometime in JJA, I suspect.

This is good news.

[Phil]

This is pretty cool stuff:

 

 

 

 

 

 

 

 

 

 

[Phil]

This is good news.

Haha, well it probably depends on your perspective. An “average” summer might make Andrew happy, but I’m sure Tim is rooting for another blowtorch.

[TT-SEA]

Definitely a good trend for the weekend on recent model runs.   Looks warm with maybe some mountain convection on the 00Z GFS.

[TT-SEA]

Haha, well it probably depends on your perspective. An “average” summer might make Andrew happy, but I’m sure Tim is rooting for another blowtorch.

 

I am not cheering for a scorching hot summer.   I just don't want a wet and cold summer.  

[Phil]

[Jesse]

An average summer would still be our coldest summer in six years.

[James Jones]

An average summer would still be our coldest summer in six years.

 

This is going to be an average summer... based on the 1991-2020 normals. Book it. 

[Jesse]

GFS ensembles are starting to show a dip in the long range around the 10th or so. Hoping to see it get built upon.

 

[Jesse]

Euro is hinting at a switch to cooler and more active at days 9-10 as well.

[Deweydog]

Euro is hinting at a switch to cooler and more active at days 9-10 as well.

Told you!

[SilverFallsAndrew]

May 2012 was fantastic

[MossMan]

Happy April 31st! Or are people posting in the wrong thread?

[Geos]

Pinned the May thread. 

[ShawniganLake]

Looks like Shawnigan ended up right at normal for Mean temperature in April. A little cold on the highs and a little warm on the lows. Rainfall was close to double that of the average. ~5.5”.

[Jesse]

April for the region:

 

 

[Jesse]

Looks like PDX ended up +1.5 for April.