powderfreak

For the non-weather educated public out there, these nights can be tough to communicate to. They just always assume the mountain is colder. That's where the "fake cold" thing comes from too on here, when it goes against common perception. It's definitely not fake, but a normal occurrence here at night throughout the year when skies are clear. Posted this in the main thread, but it might get buried. "Just textbook conditions for a cold night and woodfire smoke in the valley bottoms. 700-800ft frozen again tonight (frost made it through the day in the shade) with skim ice on ponds. These would be snowmaking conditions, except the cold is in the wrong place. Meanwhile up Mountain Road at the base of the ski area the temp is 40F. No snowmaking on the hill, while everyone in town thinks it’s a great cold night to make snow. Sometimes the inversions definitely create perception issues around here. "Why isn't the mountain making snow?" It's hard to communicate, but last night the inversion did it as well... no snowmaking on a large part of the mountain, while down in town where people live, it was plenty cold enough.

That's awesome. Well played @snowgeek.

Just textbook conditions for a cold night and woodfire smoke in the valley bottoms. 700-800ft frozen again tonight (frost made it through the day in the shade) with skim ice on ponds. These would be snowmaking conditions, except the cold is in the wrong place. Meanwhile up Mountain Road at the base of the ski area its 40F. No snowmaking on the hill, while everyone in town thinks its a great cold night to make snow. Sometimes the inversions definitely create perception issues around here. "Why isn't the mountain making snow!?"

The Super Moon was pretty cool this evening. Perfect "fake" cold conditions. Clear, calm, full moon. Those nights just have that vibe on the valley bottom.

I feel like models could show 3-6” of water just 24 hours out and you’d still be chained in Stein’s shed… “it’ll fall apart in the next 12 hours”…

17F here while it was like 34F mid-slope elevations.

It is pretty interesting that the month is +5.8 (!!) here at the MVL ASOS, but 6 of 13 days have been below normal? -1 to -5… or +13 to +26. Those are the current options.

Definitely variable but I always think of mixed up (mixing) as a normal dry adiabatic lapse rate. With good mixing it would be much easier to forecast these temps. Cold up high and a consistent trend of warmer temps as you head downward.

We invert again. MWN at 29F at 6,200ft and 23F at 1,600ft. It's 32F at 2,600ft here and 25F at 750ft.

Same up here. This is with the iPhone night mode, so it’s naturally a bit juiced up in the photo from that, but very clear and visible.

30/21 Chimney smoke here is making it about 30 feet overhead then going 90 degrees sideways. Inversion is low, haha.

I guess in my mind it wasn’t just colder with height through the column. Good rad night when MWN is warmest place around. Just went from 20F to 34F at 2,600ft as the inversion broke.

Yeah this was radiational delight even up to 4,000ft. Looks like the inversion was around 4,500ft.

There was WAA at 850mb. What are you talking about? The inversion was just up higher than it normally is but it’s the same “fake” properties.

23/18 outside up here at 9:30pm. The bottom has fallen out quickly this evening across New England with the departing high. 25/19 down in TAN is pretty chilly for this time of evening.

No it’s almost 100% RH up there, very decoupled. Currently looking at the snowmaking system from home shows wet bulbs of: 3,600ft… 19F 2,600ft… 22F 1,500ft… 23F All seem to have stabilized around those levels so that’s probably about what it can radiate too. The crew has the fan guns back on in the base area which is good to see. Wasn’t forecasting that, I went warmer tonight… I text them to say I was wrong lol, the inversion is up above summit level. I’d assume that depth will shrink throughout the night though.

Is it fake? 27F here but it’s 19F up at the picnic tables. Looking at MWN profiles the inversion is up at like 4,500ft. Guess it’s fake below that elevation.

Two posters who like to get the last word in, we’ll be here a while.

We hit 22F, had a brief period of decoupling around 2am. Temp came up after that.

That's a valid concern for water availability at hills in the drought/brush fire zone. Interesting to see how that affects snowmaking operations... but does it matter with these temperatures?

Come out of the bathroom, face all painted? Wife and kids are scared. You’re just laughing and dancing… talking about GEFS members 15 and 17.

That’d be a phenomenal user name/handle if he leaned into it. 27/21 here this evening. Normal low is 28F, so we’ve at least hit that mark. Novie starting off +8.4 up here but looks like 4 of 9 days so far will register below normal. -1 to -5 departures during cold interludes, and +18 to +23 departures during warm intervals.

Haha true, but any pattern change has to give a colder vibe than the current one. Sure, maybe it’s recycled Maritime air but need to start somewhere. Sometimes I think I’m pessimistic but Scooter is just a broken man.

Man, Greta has you chained in a shed .

Yeah 72 hours of teens would do it. That extra 500 verts makes a lot of difference… so often snowmaking gets to 2,500-2,000ft this time of year then stops. I want to see 850mb temps under -10C for like three days. 1500ft is also mid-slope climate and like Kevin’s yard… the surface inversion is below that usually. So we get nighttime profiles where it’s like 24F in town, 34F at 1500ft, and 24F up top. It’s a challenge to get all 2,100 verts sufficiently buried this time of year without some legit cold. It’s always fine on the top 1000-1500 feet.