wxsniss

That's exactly why I raised the thundersnow example... has nothing to do with garbage airmass or weenie 10:1 maps. We had several instability profiles posted yesterday, talk of CSI, multiple Mets and AFDs that mentioned the possibility if not likelihood of thunder over central MA. It's just one objective measure that did not pan out. Not at all a complaint, and nothing you or anyone here can control, maybe unless you're a plow driver NWS forecasts will bust too high for large portions of SNE, but this was a fun early season storm in the books.

Fun storm, but no way my 3-6 (or NWS 4-8) for Boston area verifies seeing as we are in the CCB now and it’s underwhelming. I get the disappointment. Take aside the well anticipated poor snow growth and melting, it still overall seems less dynamic than most guidance progged. Even for ORH hills and north, seems it underperformed. Did we even have a single report of thundersnow anywhere?

Yeah winds gusting out of NW more than N already... can see low center on radar almost at KBOS latitude 21z HRRR still strong through 8pm or so for metrowest... obviously best will be north shore As expected, the crappy ratios 5:1-7:1 and melting aren't helping sensible accums

Did your old neighborhood (currently mby) have underground power lines? And your current neighborhood? I understand underground lines significantly minimize risks of weather outages, but they're expensive to maintain and repair. We lost power for ~ 8 hours last night... not fun, especially with an infant.

Went from rain to heavy snow in about 120 seconds

First flakes Brookline Village 3:50pm

Brookline (lower elevation than Jerry)... you can hear it, still can’t see it

Before sun sets:

R/S advance slowed inside 128 BombsAway‘s Google Map trick is pretty accurate:

That is brilliant 2:20pm:

Thanks Dendrite I'm assuming all snow parallels somewhere NW of that line (i.e. melting producing rain/mix is occurring below 1500ft, and that sub-1500 ft warm layer is further northwest than the bright band). Matches with that report of mixing in Framingham... did not think we'd breach well into 495 by 18z. Areas between 495 and 128 look to rock in a few hours.

Just catching up (ironically we lost power before the storm courtesy of Eversource, now back)... Friends in Tyngsboro reported 100% snow at 11:30am No question we are ahead of changeover schedule in many places How accurate is dual-pol here? That seems too good to be true / maybe it pivots further northwest before it collapses eastward?

13z HRRR continues to clobber all the way to coast eastern SNE

WSW expanded to include Boston

6z NAM actually a tic west and warmer than 0z, also maybe a hair faster exit... better for NNE folks, not as good for eastern SNE Still would support a sloppy 2-4" to Boston metro Spots of 20+ in NH, ME

Let's revisit 7pm tomorrow to see if the changeover has not happened in Boston metro. Haven't seen anyone here tonight say they are expecting the 10:1 snow maps. Likewise, surely you're not claiming the SV maps you posted with 2-4" in ORH is likely.

Agree, the literal clown maps aren't happening with this antecedent airmass (unless of course this continues to trend east / slower exit). But I'm increasingly confident in 3-6" for Boston metro. Was also thinking earlier about Ray's map that northeast MA could be underdone if exit is prolonged.

Also the dryslot issues 18z-0z seen on earlier runs are gone... 18z and 0z shown here:

One reason for bigger totals in eastern SNE is slower exit

Crushing into BOS metro on 0z Euro Jerry will like this at his next pee stop

Oh absolutely, if we're talking a stretch of weather... Feb 15 no comparison, probably not again in our lifetime. But for a single storm... Feb 15 blizzard is up there, but still did not match the sheer extreme conditions I witnessed Apr 97 and Jan 05

Yeah there are several in contention for #3 including Feb 14-15 2015, Mar 13 2018 But I have footage from Jan 05 that I have never witnessed since... near hurricane force winds hard to stay upright + whiteout in Fenway and Harvard Square, single digit temps... it was unreal. I only wish I had footage from April 97... the awe of an earlier changeover in the afternoon, hours of thundersnow at night.