PNW April 2023 Weather Discussion

[BLI snowman]

23 minutes ago, Meatyorologist said:

It's not fair. Hawaii deserves to be this cold all the time too!

Maybe the worm will turn soon? 

The road up to the Mauna Kea summit was actually closed the day I went, so I stopped at 9300'. 

The weather at the summit was 35 with 60mph wind gusts and several inches of snow still on the ground. Pretty impressive for almost April and not super common.

Not a great pic but one I snapped down around 6000'.

 

Edited April 4, 2023 by BLI snowman

[Phil]

1 hour ago, Cold Snap said:

OT but Ian got upgraded to a Cat 5. That makes five Cat 5 US landfalls now.

It was upgraded but for the time it was offshore. Was still a cat4 at landfall, apparently.

[Phil]

1 hour ago, SilverFallsAndrew said:

Well, the CANsips is encouraging. NOT a hot summer if that verifies. 

Oh my goodness. Could it be?  

[Phishy Wx]

few places south of Spokane have had 10" of snow in the last 24 hours

[GHweatherChris]

56 minutes ago, SilverFallsAndrew said:

Eat and drink, for tomorrow we die. 

- Isaiah 22:13

Done and just started, praise all!!

[MossMan]

Boring. 
47/32 on the day, currently 44.

0.00” on the day. 

[T-Town]

Some pretty spectacular skies tonight. 

[Port Angeles Foothiller]

2 hours ago, Cold Snap said:

OT but Ian got upgraded to a Cat 5. That makes five Cat 5 US landfalls now.

I lived one of them. I was 4 in homestead when Andrew hit. I remember going out at 4 am when the eye passed. My entire world basically got deleted. My dad was a house flipper. Lost all 6 houses. We moved to Tennessee a year later. 
 

My dad also worked at Turkey Point Nuclear Plant, they had just installed a new wind gauge on one of the towers. It was rated to 250 mph. It blew off the tower in the initial eye wall. 

[Ken in Wood Village]

It's frustrating when there is weather activity and the Portland radar goes down

[Rubus Leucodermis]

2 hours ago, T-Town said:

Buzz kill.

https://gizmodo.com/drinking-for-your-health-isnt-really-a-thing-study-fin-1850295554

Well, at least “…there was no statistically significant effect on mortality—either good or bad—linked to light or moderate drinking.”

[Cascadia_Wx]

Looks like Mark posted this right before going on a two week vaca. He sounds pretty excited about the warmth over Easter Weekend. Not going to age well

April Fool’s Day features a huge Cascade snowstorm plus chilly valley showers, but warming trend headed our way (kptv.com)

[Rubus Leucodermis]

1 hour ago, BLI snowman said:

The road up to the Mauna Kea summit was actually closed the day I went, so I stopped at 9300'. 

The weather at the summit was 35 with 60mph wind gusts and several inches of snow still on the ground. Pretty impressive for almost April and not super common.

Not a great pic but one I snapped down around 6000'.

 

Fun fact: When Hawaii County once ordered a snow plow for maintaining the Mauna Kea Road, the manufacturer thought the order was a joke and ignored it.

[TT-SEA]

6 minutes ago, Cascadia_Wx said:

Looks like Mark posted this right before going on a two week vaca. He sounds pretty excited about the warmth over Easter Weekend. Not going to age well

April Fool’s Day features a huge Cascade snowstorm plus chilly valley showers, but warming trend headed our way (kptv.com)

Go get him... he is evil!  

[Cascadia_Wx]

Ended up with a very chilly 46/34 day here. A morning flurry, early afternoon sunbreaks,  then numerous showers later this afternoon. Even had a few rainbows earlier. Overall a very active and visually stunning spring day.

Looks like VUO put up their second consecutive high in the 40s with a 48/36 spread. Meanwhile in UHI hell PDX put up a 50/38.

[SilverFallsAndrew]

1 minute ago, Cascadia_Wx said:

Looks like Mark posted this right before going on a two week vaca. He sounds pretty excited about the warmth over Easter Weekend. Not going to age well

April Fool’s Day features a huge Cascade snowstorm plus chilly valley showers, but warming trend headed our way (kptv.com)

Oops 

[Olive1010]

Are there more showers/storms possible tomorrow? I have seen a few areas of broad rotation on velocity. I've heard Michael Snyder say that pacific northwest showers can briefly resemble supercells and inherit their characteristics, how is that possible with weak shear?

[Deweydog]

80 moore days and sun angles start DECREASING.

[lowlandsnow]

 

2 hours ago, Skagit Weather said:

Yeah, that was the article I was referencing, but I had forgotten about the estimated numbers up at 2,450 meters. That is just an insane amount of snow! It makes me wonder how much snowfall the NOHRSC map would have predicted for that location in 1998-99.

That articles also used a new snow estimate of .15g/cubic cm at 8000 ft which is what it is at Paradise Mount Rainier at 5,400 ft and something like 0.10 g/cubic cm would have been more accurate given that this location is 2,600 ft higher and farther north giving one a total snowfall that year of about 88 meters (3,500 inches) at 8000 ft.

[Omegaraptor]

4 hours ago, SilverFallsAndrew said:

Kind of wild how the pattern change totally flopped. After tonight and tomorrow morning I think we are probably done with snow here, but geez. Wow. 

Long range 18z GFS says you may not be done with snow up there yet.

[Omegaraptor]

Really nice drive back to Corvallis today. Many pretty looking clouds today and the view westbound on Highway 34 was gorgeous.

[MossMan]

Evening shots! 

[ShawniganLake]

Another haily afternoon 

 

 

[smerfylicious]

Juuuust a bit graupely/haily in my area earlier. Everyone else gets sunshine lol

[Deweydog]

5 minutes ago, ShawniganLake said:

Another haily afternoon 

 

 

Hailelujah! 

[MossMan]

A friend that lives on Camano Island is reporting hail. 

[Anti Marine Layer]

1 hour ago, Deweydog said:

Hailelujah! 

 

[TT-SEA]

The false ridging period was really a pattern change to wet... took the models awhile to figure it out.   Probably going to see a decent run of rainy days which is not too unusual for April.   

Today's high in Seattle was the normal high for January 11th.    

[MossMan]

Hailing. 

[jcmcgaffey]

Crazy weather over in South Dakota. Currently a blizzard warning for up to 30” of snow and 55mph winds while next week highs in the 70s. 

[The Blob]

The only rumbles I've heard today are the wheels o'trash going to the street. 

[TT-SEA]

Side note... what is likely driving this is the MJO going back to into phase 7 which clearly favors troughing in the PNW in April.   This was mentioned last week in Ag Weather update and again today.   When the models are not in sync with the MJO they tend to correct as it gets closer.   This can go both ways of course.    

[MossMan]

Forgot to post this picture I took at 8:30 tonight. 

[SilverFallsAndrew]

Incredible to see how consistent the precip has been over the mountains. Amazing storm for the higher elevations. 

[ShawniganLake]

Looks like an outflow boundary on radar, especially to the south and east of that cell in the central sound

 

[Slushy Inch]

Score! Lightning! Was not expected first lightning of the year to be at 11:30 at night. So much for diurnally triggered storms.

[Gradient Keeper]

4 minutes ago, Slushy Inch said:

Score! Lightning! 

 

Wicked!

[Slushy Inch]

2 minutes ago, Gradient Keeper said:

Wicked!

I was not expecting lightning at all!

[Slushy Inch]

16 minutes ago, Gradient Keeper said:

Wicked!

The way this trough hung west a little bit  as it dropped south I knew there be shower and convergence zone potential for several days. Little stronger and it would have been very impressive. 

[Gradient Keeper]

Uhhhhhhh........ 00z runs suck. Max temps: GFS 52. Euro 55.

[Slushy Inch]

1 minute ago, Gradient Keeper said:

Uhhhhhhh........ 00z runs suck. Max temps: GFS 52. Euro 55.

On the bright side, more potential for instability!