Re: January 18th Winter Storm Looms

by **Frank_Wx** Thu Jan 16, 2020 11:26 am

My thoughts remain unchanged with 1-3" for NYC Metro and 3-6" N&W. S&E of NYC may see <1".

Timing pushed back from late morning to the afternoon. Looks like a 2-3pm start time.

by **Dunnzoo** Thu Jan 16, 2020 6:23 pm

Trending colder for NNJ, 18z models have very little if no rain. All snow and/or mix. Still in the 3-4" range for here, LI changes to rain with just about an inch.

by **frank 638** Thu Jan 16, 2020 6:52 pm

Even for the city especially by me in the Bronx it has trended slightly colder with 2 to 3 inches of snow Possibly a mix to rain if I get 3 inches worth of snow I’ll be very happy

by **amugs** Thu Jan 16, 2020 9:12 pm

Frank_Wx wrote:My thoughts remain unchanged with 1-3" for NYC Metro and 3-6" N&W. S&E of NYC may see <1".

Timing pushed back from late morning to the afternoon. Looks like a 2-3pm start time.

I approve this message LOL!!

by **heehaw453** Thu Jan 16, 2020 9:33 pm

Nice NAM run at 0Z now inside of 48 hours. Hopefully it's onto something. Warm tongue of air probably at the 800mb could taint the snow to sleet for a time.

This represents actual snow depth change. Probably fairly accurate as per the run.

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by **aiannone** Thu Jan 16, 2020 9:47 pm

0z Nam keeps everyone mostly frozen until the tail end

by **amugs** Thu Jan 16, 2020 9:48 pm

NAM coming in juicy and colder as the cold trend is real now its juicin it up.
BARNEY ALERT!!
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by **Snow88** Thu Jan 16, 2020 9:50 pm

Looks like a classic 1-3 inches for NYC with more inland

by **heehaw453** Thu Jan 16, 2020 9:52 pm

The most exciting part of this is the surface temperature and not having to struggle to stick. Could be low 20's or upper teens to start!

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by **heehaw453** Thu Jan 16, 2020 10:02 pm

Mount Holly numbers increasing each new output. I'll sign up for the 4" right now no questions asked. Hopefully this trend continues and these numbers get pushed further SE for the rest of the other folks.

January 18th Winter Storm Looms - Page 4 Mtholl11

by **nutleyblizzard** Thu Jan 16, 2020 10:06 pm

3k Nam is even colder. 3-5 for NYC!

by **amugs** Thu Jan 16, 2020 10:22 pm

0z RGEM snowy now too!! News the rest of the suite to say yes!!
Courtesy of 33&rain
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January 18th Winter Storm Looms - Page 4 Rgem_mslp_pcpn_frzn_neus_fh47-54.gif.bfd99369b8e91610d7868fdde1a94fb6

by **Irish** Fri Jan 17, 2020 12:17 am

What's a Barney Alert? Will giant purple dinosaurs be falling from the sky?

by **algae888** Fri Jan 17, 2020 5:16 am

Looks like our biggest snowfall of the season tomorrow as Trends keep getting better. Anyone west of the Hudson and north of the city look to stay almost entirely snow till the very end. 3 to 6 in for those areas 1 to 3 in for the city south and east.

by **docstox12** Fri Jan 17, 2020 5:19 am

Good news Al! Whatever we get will remain as a snowpack as next weeks looks cold.Perfect timing.Saturday into Sunday AM on the snow, so no problems for those that must drive to work.

by **nutleyblizzard** Fri Jan 17, 2020 5:46 am

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Last night's EURO came in snowier/colder.

by **billg315** Fri Jan 17, 2020 6:19 am

I’ve never really worried about the surface temps with this as my forecast high for Saturday has never really been above 34/35 in almost all the modeling (usually not until the late evening). I’m forecast to be below freezing most of the storm and that’s been consistent. To me the biggest curveball would be mixing issues with sleet/frz. That is what could knock what should be a “3-5” event N&W of NYC down to a “1-3” event. GFS has shown little or no mixing. NAM has mixing over NJ but seems to be minimizing that (though not eliminating it) in the latest run (except over parts of PA). Interested to see how the HRRR handles that on the 12z run today.
If there isn’t a transition period of sleet involved here I don’t see this going over to rain until later in the evening so I think in that scenario 3-5 still seems a good call (except city and shore). But I’ve had one too many storms in my life ruined by that pitter-patter on my window of sleet ruining my snow . . . so I’ll have to keep my fingers crossed.

by **heehaw453** Fri Jan 17, 2020 7:45 am

I believe 3" will be very wide spread NW of 95 with some 4" amounts. 5" i believe will be very isolated.

City I think can pick up 1-3". If surface was marginal at the start I'd say no chance, but this is a different surface temp at the onset and even during. IMO this will be NYC biggest snow to date for the season. 3" in CPK won't shock me one bit.

by **CPcantmeasuresnow** Fri Jan 17, 2020 8:31 am

algae888 wrote:Looks like our biggest snowfall of the season tomorrow as Trends keep getting better. Anyone west of the Hudson and north of the city look to stay almost entirely snow till the very end. 3 to 6 in for those areas 1 to 3 in for the city south and east.

Yes the biggest of the season for some, not all.

This should easily be the biggest snowfall of 2020 for all.

by **billg315** Fri Jan 17, 2020 8:56 am

12z HRRR shows very little mixing. A little bit down around Mercer County NJ/Bucks Co PA. Also shows some heavy late afternoon snow banding across Central/North Jersey. Has about 3-4" with it still snowing (doesn't reach end of storm yet). I like the way the modeling is looking so far today for a decent snow event tomorrow. Can't be greedy in this kind of winter.

by **heehaw453** Fri Jan 17, 2020 10:51 am

billg315 wrote:12z HRRR shows very little mixing. A little bit down around Mercer County NJ/Bucks Co PA. Also shows some heavy late afternoon snow banding across Central/North Jersey. Has about 3-4" with it still snowing (doesn't reach end of storm yet). I like the way the modeling is looking so far today for a decent snow event tomorrow. Can't be greedy in this kind of winter.

Yeah, I think we won't have so much of mixing concerns NW I95 as the soundings continue to support below/at 32 across the entire column for most of the precip. It's if this forcing (central PA) can hold together as it approaches NJ, it'll enhance the rates. If that falls apart, 3" at best, if it hold together some folks will hit 5".

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by **hyde345** Fri Jan 17, 2020 11:39 am

heehaw453 wrote:I believe 3" will be very wide spread NW of 95 with some 4" amounts. 5" i believe will be very isolated.

City I think can pick up 1-3". If surface was marginal at the start I'd say no chance, but this is a different surface temp at the onset and even during. IMO this will be NYC biggest snow to date for the season. 3" in CPK won't shock me one bit.

Yup. I'm expecting 3-4 in mid hudson valley, nothing has changed with that. I think it will be a 6 hour event of .50-.75 inch per hour rates for the most part with 1 inch per hour at times and then shuts off quickly after 8-9pm from west to east. Model trends have been colder so everybody should see some snow. I think Central Park gets to 2 as well as north shore of LI. This winter thats a win.

by **algae888** Fri Jan 17, 2020 12:01 pm

The good Trends continue on all guidance today first time this has happened this winter season. The system continues to get colder and wetter the last few Cycles as models are now hinting at a transfer from the primary to just south of Long Island which is probably locking in the cold air and enhancing the precipitation. New York City and into Southwest Connecticut benefiting from this Solid 3 to 5in on all guidance for these areas

by **amugs** Fri Jan 17, 2020 12:56 pm

GFS in the game too

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HREF - combination of short range models NWS uses from SS at 33n rain wx bd
https://www.weathernerds.org/models/hrrr.html?&inittype=zoom&initfield=Snowfall_36_hr&initcycle=12&initfhour=036&initimdimx=1050&initimdimy=695&initrange=45.500000000020:276.666666666620:37.777777777795:290.666666666620&initcx1=705&initcy1=176&initcx2=905&initcy2=305&initcross=False&initsound=False&initsoundx=700&initsoundy=171&initloop=False&initoverlay=False&initlstart=24&initlend=036&initlint=1&initol1=Snowfall_36_hr&initol2=null&initol3=null&initol4=null&initol5=null&initcities=On&inithgwys=On&initunits=On&initlatlon=Off

RGEM trend
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January 18th Winter Storm Looms - Page 4 Rgem_mslp_pcpn_frzn_neus_fh36_trend.gif.613d45a41903ede2a7ba89f1e7605420

by **amugs** Fri Jan 17, 2020 12:58 pm

Irish wrote:What's a Barney Alert? Will giant purple dinosaurs be falling from the sky?

Pretty Funny Irish!!
Barney Alert means purple colors mean 4" plus on the snow maps.

by **heehaw453** Fri Jan 17, 2020 1:16 pm

Solid Euro run. 4"+ TTN on north. Precipitation is robust. Much colder across the entire column. Would only be wet at the very end.

Since i missed out on December's event my largest snowfall this season is 2". I believe this will surpass that and with cold surface it'll be really nice winter weather event. Not taking this for granted as this could be the best event I see for the foreseeable future.

by **nutleyblizzard** Fri Jan 17, 2020 1:24 pm

heehaw453 wrote:Solid Euro run. 4"+ TTN on north. Precipitation is robust. Much colder across the entire column. Would only be wet at the very end.

Since i missed out on December's event my largest snowfall this season is 2". I believe this will surpass that and with cold surface it'll be really nice winter weather event. Not taking this for granted as this could be the best event I see for the foreseeable future.

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