wxsniss

Agree I posted about that earlier... looks like best lift is now below DGZ vs. better crosshair earlier And correlated with KBOS ticking up to 33.8 (an effect, not a cause)... and streets clearing up quickly

I think North Shore has a shot at >4" Snowgrowth in Boston metro (now in between the best bands) not as good now and visibilities have increased... KBOS ticked up to 33.8/32 Anticipating at least another 0.5-1", band over ORH will rotate through

0.25 mile vis KBOS!!! Mesos ftw, the heavy rates overcame the crappy BL Roads are whitening Positive bust of yore to buck the season tenor

Best snowfall of season for Boston metro, 0.5-0.75 mile visibility Hours of this ahead

~0.75 mile visibility in Boston and in a first for the season for the city: roads are actually starting to whiten

32 / 30 KBOS, just in time for best rates entering for next few hours!

Mesos ftw 2-4pm window consistently advertised for metrowest / Boston area

30-35 dBZ entering 495 belt strong finish in the making

< 1 mile vis in Fenway area Roads still just wet obs + upstream radar consistent with a strong finish 2" seems very doable but even whitened roads would feel like a victory

We had a bit of white rain mix during that dry lull in Boston metro but back to snow with better returns I like what I see upstream and short term mesos, at least for snowfall rates 2-4pm

Complete changeover to snow in Brookline, seeing some wetbulbing at KBOS Ground is starting to whiten Heaviest 2-4pm per HRRR/RAP/HREF eastern SNE, will actually give a semblance of winter

12z HREF doubles down on finish for eastern SNE... Band of 0.5-1" / hr swings through ORH east ~2-4pm

2023-style Miller B... I'm not expecting more than sloppy 1-2" in mby, and we'll celebrate like it's 2012

Kraft on 0z HREF (a perfunctory post in an abysmal winter)

Check out 0z HREF, goes to town with the finish In any case, hard to be very confident in the finish and will be a nowcast event. We'll need good rates to overcome crappy BL temps in much of eastern SNE... very possible it looks like a 2-4" event at 20 feet elevation amounting to only a slushy 1-2" on the ground.

0z NAM keeps Orchids of Asia open

Great synopsis We're gun-shy (at least south of NH-MA border) of a positive trend of yore, but guidance is pretty solid now for one. It's really a stretched out Miller B. Initial pulse is pretty detached northeast from the main upper level mechanics... check out at 11z: By 16z, cyclogenesis (with stretched out closing 850/700 lows) continues further southwest: If we had an additional day for these trends, I wouldn't be surprised to see more consolidation around the later / southwest / better mechanics. We'll see how this all overcomes crappy BL temps, but good rates should deliver into SNE.

One for the humans. I lobbed ChatGPT an easy one curious how it would do: Explain the dendritic growth zone in snow growth The dendritic growth zone (DGZ) is a layer in the snowpack where dendritic crystals form. Dendrites are a type of snow crystal that have a branching, fern-like shape. They form in the lower part of the snowpack, near the ground, when the snow is subjected to temperature gradients and metamorphism. The DGZ is typically located between the new snow and old snow layers and is characterized by small, dense crystals that are less likely to cause avalanches than depth hoar crystals. The DGZ is important for understanding the physical and mechanical properties of the snowpack, such as its strength and deformation. The formation and persistence of the DGZ in the snowpack is controlled by factors such as snow depth, temperature gradients, and the presence of liquid water.

Funny to see the excitement as the ground whitens... we're a forgiving bunch

Yeah line (matches well with CC) has been dancing around pike, finally pushing through Cars and pavement starting to whiten!

Sorry for the nostalgia... Jan 2005 and April 1997 top all-time for me. Most extreme winter storms I've ever experienced. Feels like an imagined memory given the sewage regime we're in now, but this was real and it was spectacular. 1/22/05 Saturday night, scenes in the Longwood medical area and Harvard Square: NRB.1.22.05-TRIMMED.webm HarvardSquare.1.22.05-TRIMMED.webm (Edit: anyone know how to embed videos?)

HOF'er for EMA. It's historically a prolific week. That specific 12z Euro run left some greater potential on the table. Vague EPS signal too.

Plain rain in Boston, but unless these soundings are completely wrong, it's coming... Northeast MA / southeast NH including metrowest and city proper should see changeover followed by decent snowfall ~3pm-7pm

Yeah afternoon (~19z-23z) looks good for a few hours of 33-35F decent snow... at least the appearance of winter in the air even if we do not get the most efficient accumulations 13z HRRR likes northeast MA/southeast NH down to metrowest with the commahead

Health and Happy NY all! Back to muggy nights in the short term, but some realistic threats lining up with signs of a better pattern during good climo later this month… delayed but not denied.