May Weather in the Pacific Northwest

[Jesse]

Not to say PDX hasn't seen an increase in UHI recently because they have, but their afternoon temps this month don't seem unusual compared to Troutdale.

Maybe. It could be that there have been a handful of repeating patterns the last few weeks that have specifically favored warmth over the east metro area while areas to the immediate north, west and south have all been cooler.

 

This was definitely true on 5/3 and 4/26.

[Jesse]

At least that rain band looks to be holding together pretty well.

[TT-SEA]

Getting some convective looking clouds forming now... very summery day.

 

[Phil]

Getting some convective looking clouds forming now... very summery day.

 

I don’t see anything convective about those clouds.

[TT-SEA]

I don’t see anything convective about those clouds.

 

Well... it is getting convective out there.    Whether you want to troll me or not.   NWS just added thunderstorms to the evening forecast as well.

 

[Phil]

Wisconsin and Iowa just had their coldest Aprils on record.

 

Impressive!

[James Jones]

Maybe. It could be that there have been a handful of repeating patterns the last few weeks that have specifically favored warmth over the east metro area while areas to the immediate north, west and south have all been cooler.

 

This was definitely true on 5/3 and 4/26.

 

Something worth keeping an eye on at least as we go through the summer.

 

Meanwhile I'm starting to get some sprinkles here.

[TT-SEA]

[Phil]

Well... it is getting convective out there. Whether you want to troll me or not. NWS just added thunderstorms to the evening forecast as well.

 

Not saying it isn’t. But those are fair-weather cumulus clouds, not cumulus congestus.

[TT-SEA]

Not saying it isn’t. But those are fair-weather cumulus clouds, not cumulus congestus.

 

 

No... definitely cumulus congestus forming now.   

 

I can watch it happening in real time overhead as the front begins to approach and destabilize the atmosphere.

[Phil]

No, those are cumulus humilis, or maybe cumulus mediocris at best.

 

Cumulus congestus has a much more prolific vertical component.

[TT-SEA]

No, those are cumulus humilis, or maybe cumulus mediocris at best.

 

Cumulus congestus has a much more prolific vertical component.

 

Its convective in nature and definitely not fair weather cumulus... the negatively tilted front approaching is triggering the development.    

[Phil]

Its convective in nature and definitely not fair weather cumulus... the negatively tilted front approaching is triggering the development.

Probably cumulus mediocris. No way in hell are those cumulus congestus.

 

Cumulus mediocris: https://en.m.wikipedia.org/wiki/Cumulus_mediocris_cloud

 

Cumulus congestus: https://en.m.wikipedia.org/wiki/Cumulus_congestus_cloud

[TT-SEA]

Probably cumulus mediocris. No way in hell are those cumulus congestus.

 

Cumulus mediocris: https://en.m.wikipedia.org/wiki/Cumulus_mediocris_cloud

 

Cumulus congestus: https://en.m.wikipedia.org/wiki/Cumulus_congestus_cloud

 

Whatever... its convective.

[Phil]

Whatever... its convective.

Okay, brother. Just FWIW, fair weather cumulus are also technically “convective”.

 

There’s convection, then there’s convection.

[TT-SEA]

Okay, brother. Just FWIW, fair weather cumulus are also technically “convective”.

 

There’s convection, then there’s convection.

 

OMG.

 

There is a negatively tilted front moving in and the atmosphere is becoming unstable and its warm... and there will likely be thunderstorms before too long.    Its a summery day.   

 

Good Lord.

[TT-SEA]

Live view here...

 

[El Nina]

OMG.

 

There is a negatively tilted front moving in and the atmosphere is becoming unstable and its warm... and there will likely be thunderstorms before too long.    Its a summery day.   

 

Good Lord.

Don't like the taste of your own medicine?

[TT-SEA]

Band seems to be thinning out as it approaches Portland.

[TT-SEA]

Don't like the taste of your own medicine?

 

 

Phil has a special brand of trolling based on scientific accuracies.  

[Front Ranger]

Okay, brother. Just FWIW, fair weather cumulus are also technically “convective”.

 

There’s convection, then there’s convection.

 

Convection with conviction?

[Deweydog]

Lame.

[TT-SEA]

There fair weather cumulus clouds are looking meaner by the minute!  

 

[Jbolin]

Okay, brother. Just FWIW, fair weather cumulus are also technically “convective”.

 

There’s convection, then there’s convection.

Holyshit, is this argument really taking place?

[Jesse]

Tomorrow looks like it could be up near 70 now. This month just refuses to cool off.

[Timmy]

Tomorrow looks like it could be up near 70 now. This month just refuses to cool off.

good news for people who like nice weather.

[Jesse]

good news for peo for sure ple who like nice weather.

[Anti Marine Layer]

Onshore push is in progress over there now.

[Jbolin]

Inbound 

[Deweydog]

Tomorrow looks like it could be up near 70 now. This month just refuses to cool off.

Prolly not.

[Phil]

There fair weather cumulus clouds are looking meaner by the minute!

 

Did my sunny/90*F prediction verify before the evil clouds of death arrived?

 

BTW, those probably still aren’t cumulus congestus.

[TT-SEA]

Prolly not.

 

 

ECMWF shows 65 and partly sunny at PDX tomorrow.   It only showed 76 for today though.  

[Phil]

Holyshit, is this argument really taking place?

I’m just trolling a bit. Nothing mean spirited.

[TT-SEA]

Did my sunny/90*F prediction verify before the evil clouds of death arrived?

 

BTW, those probably still aren’t cumulus congestus.

 

They sure as hell are not fair weather cumulus as you described them.   

[Phil]

They sure as hell are not fair weather cumulus as you described them.

They were before. Not as much now, but they still don’t seem to have much in the way of vertical development.

[TT-SEA]

They were before. Not as much now, but they still don’t seem to have much in the way of vertical development.

They were not before either. There is nothing fair weather about the turbulence approaching this afternoon.

[Front Ranger]

They were before. Not as much now, but they still don’t seem to have much in the way of vertical development.

East coast bias.

[Deweydog]

They look like +PNA clouds to me.

[Jesse]

ECMWF shows 65 and partly sunny at PDX tomorrow. It only showed 76 for today though.

Yeah, given the performance of PDX lately, expecting them exceed forecast highs by 3-5 degrees seems pretty reasonable.

[TT-SEA]

That band looks much less impressive now that its over the Portland area...