WxUSAF

Not to rain on anyone’s parade, but I don’t think a few pics of sunshine at 4 PM in late October are going to do much to destabilize the atmosphere.

Euro dropping Barney’s hammer next weekend

20F temp drop with the front on the NAM. Says first freeze for IAD and BWI is Saturday morning.

Cohen says snowcover advance index supports -AO! Here we go!!! #sarcasm

My tulip magnolia went from green to 75% bare in under 10 days. Probably totally bare by tomorrow.

Yeah we’ve really closed that deficit in the last 2 weeks.

Euro had coldest temps Saturday morning and Monday morning.

Ggem and gfs just casually 17F apart for Saturday morning. Ggem has bwi down to 26, gfs at 43. Last nights euro was 35.

I don’t think you can use old analogs (pre-2000? But certainly pre-1990) without accounting for the background climate warming. Maybe they did that, but when i see these old analogs I get skeptical.

Looks like the 6-8pm window should be good in HoCo. Assuming no major changes. NAM is very chilly for Friday. Caveat that it usually runs too cold.

Like 3 days ago...

I changed the title...

FWIW, 0z GEFS keeps the cross polar flow HL look throughout the entire run's mid-long range, where yesterday's runs broke it down late. Very much EPO/WPO/PNA driven with the AO/NAO going very positive late. EPS has the AO/NAO more neutral at D10. Eta...6z GEFS just loaded on TT and it's pretty similar.

I think it’s more that long range ensembles typically show a pattern washed out in space and time, where there’s typically more variability, especially in winter, due to storm systems that aren’t seen in long range ensemble means. As you get closer, the ensembles resolve that variability. For example, next week still looks BN overall, but it was looking like wall-to-wall cold a couple days ago. Now you’re seeing the ensembles pick up on a brief warming around next Wednesday due to SW flow ahead of the next cold front. That said, the gfs and GEFS definitely have a cold bias in the long range, and there’s also a tendency to overdo HL blocking. I’m buying the cold look more right now because the Eps is very bullish on cross polar flow.

Certainly a very cold look for next weekend on the ensembles. I’d wait until this weekend before being comfortable with how cold that ends up. Colder looks in the long range tend to modify with time.

Ontario and Quebec look to her thoroughly snow covered over the next week or two and temps will stay cold up there per guidance , so it should stick around. Good news for keeping air masses cold as they head our way.

I guess weeklies were very cold for November? November 10 would be pretty early, but maybe possible.

Rule for the winter, even more than usual, is to pay very little attention to the gfs past D7.

All 3 ensemble systems put a ridge bridge across the Pole around D7 and through the end of their runs. That should help keep beating on the strat vortex and keep us BN in early Novie. Certainly seems a trend in recent years to have a warm early fall, chilly November, then torcherific December.

80 at BWI

1.12” total. More than I expected.

Maue recognizes the impact and reality of climate change, but his response after that seems often to be “suck it libs”, which earns him lots of maga followers who then get annoyed he acknowledges climate change. It’s weird.

Going to be a banner year for digital snow. Tug Hill/Mt Rainier level digital pummeling

Nice 6-12” on the 12z gfs. Oh yeah, winter’s going to go REAL well with the new gfs

Yeah, first week probably ends on the slightly cool side. I think first freeze for the non-DCA sights is a good bet. But after, probably goes mild again if MJO keeps progressing and PV keeps consolidating. This next week is a sneaky torch. This mornings low is already +15F from normal lows.