wxsniss

Will alluded to this... when we're trying to squeeze out dynamics from this decaying thing, the slightest kink in heights determines 4-8 vs. 2-4 in southeast/eastern MA / RI... 0z NAM top, GFS bottom... Don't think it's possible to realtime assess shortwave (currently over California) to determine which is more accurate

Never loses its charm... (crappy phone camera ftl)

A similar experience... Ski trip to Tahoe Feb 2007. On the drive up, we had to pull off and sleep in the car for hours because they did not allow vehicles without snow chains above a certain elevation. Whiteout conditions on the slopes the next day. I took this from inside one of the ski lodges the next day:

Yep. Euro last night was a pipeline for potent shortwaves ejecting out of the southwest that subsequently deamplify riding up and over the southeast ridge. Counters cyclogenesis with that trajectory, so we're left more dependent on potency of the incoming shortwave. Same issue for 3/4 system as currently depicted. Infusion of northern stream had been compensating.

Haven't posted since this became disconnected from the northern stream, but agree with the disappointment. The 2/22 12z Euro was a flash in the pan for seasonal redemption, but notwithstanding there was a solid day of guidance hitting double digits for much of SNE that was realistic given the setup. Looking at tonight's 0z Euro... it's a really good shortwave, and even digs slightly better and slightly more negative tilt by 6z-12z Tuesday than earlier run. Doesn't reflect at the surface, but wouldn't take much to get this more amplified over the weekend. Is there some irony that this same shortwave is bringing blizzard conditions to southern California, but won't in New England? Fitting capstone for this season.

Just catching up... Improvements on 0z GFS are the more potent lead shortwave and we boost the overrunning portion, making up for today's "pancaking" trend Tip was describing. Verbatim 12"+ for eastern SNE. Still not getting the same degree of N stream injection we saw yesterday, so it's a smeared CCB rather than the more consolidated and earlier secondary we saw on 2/22 12z Euro. And still room for that degree of injection to fluctuate in the next days of guidance.

I take it 50th percentile = median? Definitely informative if you have some outliers like e19... in this case mean ≈ median gives more confidence to toss those outliers. Caveat being the entire ens/op could be off.

Agree, increasing confidence in our biggest event of the season for SNE (a pretty low bar). Blockbuster is definitely still on table, but there are many more paths to pedestrian as illustrated tonight.

EPS also have lead energy escaping east giving a flatter solution

Looks like the lead shortwave shoots out too quick, misses the better phasing we saw earlier

Woof woof We obviously want to see more continuity through tomorrow, but no question this is the best signal (cross-guidance and ensemble support + in shortest lead time) we've seen all winter

Agree with both, just was amused by the very precise shirk inside 128. Honestly haven't invested much time / care in this one, a pretty low ceiling for SNE. Not true for next week...

Circle shirk?

Woof for 2/28... nice cross guidance signal

This was days after the 28-3 Superbowl... Similar to 2015, sometimes feels like concordant feast or famine in these parts Thundersnow ~2:30-3:30pm in eastern MA

https://www.boston.com/weather/weather/2023/02/08/could-winter-in-boston-be-over-before-it-starts/

-10˚F !!!

HRRR suggests we have a few more ticks, bottom around 2-4am 12:40am Wundermap:

-9 Gusts picking up again

KBOS -7 at 11:45pm I believe that’s a new record low for Feb 3

-7˚F !

Pour out some water onto an incline or pole... pretty cool, it's a rare night

-5F at 10pm This is really impressive Went for a walk... can't really be outside barehanded for more than a minute I poured water down a driveway apron out of curiosity... the streams froze at ~1 foot length before they reached the bottom of the apron

That ORH ASOS is such a debacle on a potential record night. As expected from 925mb, some of the most intense gusts and fastest plummet in past 2 hours. Should abate a bit after 10pm 4F 6:50 2F 7:27pm 1F 7:40pm 0F 7:55pm -1F 8:20pm -2F 8:33pm MBY probably plateaus somewhere -10-12 In case wasn't posted earlier: Record Low Temps Fri Feb 3... Boston-5 in 1881 Hartford-9 in 1961 Providence-3 in 1955 Worcester-7 in 1971 Record Low Temps Sat Feb 4... Boston-2 in 1886 Hartford -8 in 1965 Providence -2 in 1918 Worcester -4 in 1934 Record Low Maximum Temps Sat Feb 4... Boston 11 in 1886 Hartford 12 in 1996 Providence 13 in 1996 Worcester 8 in 1908

2F 7:27pm 1F 7:40pm 0F 7:55pm