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Everything posted by Gravity Wave
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I think the deform band will set up along a MDT-ABE-NYC-ISP axis, much as the Euro shows. RGEM is too far south and west with the heaviest snows.
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Love how the "blend of models" has a lower amount for NYC than any individual model.
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RGEM holds serve with the CCB decaying over I-95. Hopefully the NAM was just a hiccup, the 850 low track seemed difficult to believe.
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I'd be more concerned about the Ukie if it hadn't been the most inconsistent model for this storm.
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GFS is usually too dry for big storms, I don't think this time will be the exception.
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Perhaps but it's looking significantly better than its 18Z run so far.
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Would love to see the UKMET rejoin the party in a few minutes.
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I agree that the GFS and CMC have weird precip shields. Hopefully we continue the trend towards a clean phase. Edit: Just saw the CMC phased and blew the CCB up for a long duration event.
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Finally a storm that doesn't look like it's doomed from the start. Excited to see what kinds of solutions the models spit out over the next few days.
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January 2021 General Discussions & Observations Thread
Gravity Wave replied to Stormlover74's topic in New York City Metro
Three years ago today: the "bomb cyclone" drops 10" of snow in NYC with whiteout conditions in the late morning and early afternoon. -
Virtually no wind here at my parents' house in Allentown. I'm hoping to see some good gusts before bed.
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December 16-17, 2020 Storm Observations and Nowcast
Gravity Wave replied to wdrag's topic in New York City Metro
A few thoughts: - The models overestimated the front end because of the rapid advance of the dry slot, but they mostly underestimated the back end so total in the metro area largely met forecasts. -The NAM was correct about the major warm punch at the upper levels but got trounced by the HRRR at the boundary level. - We were lucky to get anything with the system tracking the way it did, let alone 8-12 inches. The WAA event last December dropped a slushy inch in the city before switching quickly to sleet and rain due to the lack of an arctic high. - The meso models didn't lock in on the I-88 corridor as the jackpot until under 24 hours before the onset of the storm, and before that they had been pretty consistent with a jackpot 50 miles south of there. Disappointing for many in the Hudson Valley, NNJ and NEPA.- 1,011 replies
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December 16-17, 2020 Storm Observations and Nowcast
Gravity Wave replied to wdrag's topic in New York City Metro
Keep in mind the sleet line was supposed to stall out for a while once it reached Sandy Hook. It's already behind schedule along the Jersey shore.- 1,011 replies
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December 16-17, 2020 Storm Observations and Nowcast
Gravity Wave replied to wdrag's topic in New York City Metro
Finally back home in the UES, moderate snow sticking to everything except main avenues. Looks like the good stuff will come in around 7.- 1,011 replies
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December 16-17, 2020 Storm Observations and Nowcast
Gravity Wave replied to wdrag's topic in New York City Metro
Really looking like the NAM was too aggressive with the WAA push. We just need it to hold off until the dry slot moves in, then the winds will shift shortly afterwards.- 1,011 replies
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December 16-17, 2020 Storm Observations and Nowcast
Gravity Wave replied to wdrag's topic in New York City Metro
Apparently it's still snow in Toms River, can't be bad news for us...- 1,011 replies
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Really starting to come down now in Midtown.
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Flakes are flying in Midtown, where I'm waiting alone in my office for my incompetent colleagues to send me revised documents to mail out "before the storm."
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Models are really starting to catch on to the enhanced banding for NYC and the coast Thursday morning; the precip minima that was over the city in yesterday afternoon's model runs has moved west to WNJ and far eastern PA.
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That banding close to the surface low after the front end comes through (and the upper air temps associated with it) are going to determine what kind of storm this is for the area, because i don't think the decaying CCB on the back side is going to give us more than an inch or two. If it's strong like on the GFS we're on track for over a foot, if not I'm thinking 8 inches is the target.
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Euro is really nice for most, 12-18 for everyone except the Jersey coast.
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The 3km NAM is going to give us some delicious runs starting tonight.
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The NAM verbatim takes the main precip shield north of the city after the initial thump, but it's still adjusting south.
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Surface is nice and cold on the NAM, but 850s get close to zero for the I-78 corridor east to the City early in the storm. Something to watch on meso models.
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