OT: Weekend snowstorm - historic blizzzard

Knight Shift

Heisman
May 19, 2011
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Yes, 5-6" for CNJ/95 is not an impossibility at all given how fragile this setup is - did you see the low end 10% probability snowfall map I posted a few hours ago showing 1-2" for most? Being 24 hours out and no big changes (well Euro hasn't run yet) with the 12Z models, that low probability map is well out of date now (it was generated 2 model cycles ago around 3 am or ~36 hours out) - maybe that's a 1% probability now - another way to look at it is that the 10% probability map now might be more like a 4-6" snow for 95 instead of the 12-16" being forecast.

When they update the snowfall maps, look at these low/high probability maps - they're interesting and they show the confidence level in the forecast. For 1/25, 36 hours out the low end maps were maybe 3-5" vs. a forecast of 12-18", so they had a lot more confidence in that forecast.

https://www.weather.gov/phi/winter
Kudos to you for pointing this out, at least twice, probably more.
 
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bac2therac

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18 GFS is 14-22 inches..22-26 at coast

Seems a little less raging than its other runs all things considered
 

RUGuitarMan1

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It does seem a little strange to get the type of snow projections out there without some very cold air around. A very cold air mass often helps the developing low to intensify and also contributes to higher snow ratios from the available precipitation. The NWS are the experts and they analyze a lot of data not just the models, so I guess they see something with this particular setup. We shall see what happens.
 
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Knight Shift

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My local NWS forecast, which is almost always wrong, for Allenwood says:

Sunday:
New snow accumulation of 1 to 2 inches possible.

Sunday Night:
New snow accumulation of 14 to 20 inches possible.

Monday:
New snow accumulation of 4 to 8 inches possible.

That's a total 0f 19-30 inches.
 

bac2therac

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It does seem a little strange to get the type of snow projections out there without some very cold air around. A very cold air mass often helps the developing low to intensify and also contributes to higher snow ratios from the available precipitation. The NWS are the experts and they analyze a lot of data not just the models, so I guess they see something with this particular setup. We shall see what happens.
If it was cold in this case the storm would get suppressed to the coast and offshore

This storm is going to be so dynamic and tuck in and stall. The precip rates will be very high with temps around 30
 

Knight Shift

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May 19, 2011
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Its generally a diagonal line so its nw and se if you want to be an *** about it
I'm not the only who questioned it, ya putz.

So Southeast would be more accurate.
Because one would be Southwest of 95 and be in Princeton, Somerset, etc.
Calm down.

 
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RU848789

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Jul 27, 2001
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Blizzard and Winter Storm Warnings Expanded

The blizzard warnings were extended about a county inland by the NWS (counties in orange) and those watches for counties in NEPA were converted to warnings (pink), as the NWS clearly has more confidence in more snowfall making it that far inland so they upped snowfall for everyone especially west of 95. Below is a bulleted summary of the blizzard/winter storm warnings. Hopefully we'll see a new NWS map soon, as snowfall amounts have been increased, as per these warning amounts. Specifically, the warning for Somerset/Middlesex/Mercer is for 16-20" of snow and the map had us at 12-16" (and this goes for everyone). The links below have the full text for all of the warnings.

Blizzard Warnings from the NWS-Philly and NYC
  • Blizzard Warning for Atlantic-Cape May Counties for blizzard conditions with total snow accumulations between 12 and 20 inches and winds gusting as high as 50 mph.
  • Blizzard Warning for Gloucester-Camden-NW Burlington-Cumberland-Counties for blizzard conditions with total snow accumulations between 14 and 20 inches and winds gusting as high as 45 mph.
  • Blizzard Warning for Monmouth-Ocean-SE Burlington Counties for blizzard conditions with total snow accumulations between 15 and 20 inches and winds gusting as high as 50 mph.
  • Blizzard Warning for Morris-Somerset-Middlesex-Mercer Counties for blizzard conditions with total snow accumulations between 16 and 20 inches and winds gusting as high as 45 mph.
  • Blizzard Warning for Passaic-Hudson-Bergen-Essex-Union Counties for blizzard conditions with total snow accumulations between 12 and 18 inches and winds gusting as high as 50 mph
  • Blizzard Warning for Westchester-Manhattan-Bronx-Staten Island-Brooklyn-Suffolk-Queens-Nassau Counties for blizzard conditions with total snow accumulations between 15 and 20 inches and winds gusting as high as 55-60 mph
  • Blizzard Warning for N Westchester-Rockland Counties for blizzard conditions with total snow accumulations between 11 and 15 inches and winds gusting as high as 45 mph
  • Note: blizzard warnings are also up for Delaware and Connecticut, as well as Rhode Island/Mass (not including those details)
Winter Storm Warnings from the NWS-Philly and NYC (very close to blizzard conditions, looking at the winds)
  • Winter Storm Warning for Carbon-Monroe-Berks-Lehigh-Northampton Counties for total snow accumulations between 8 and 16 inches and winds gusting as high as 45 mph
  • Winter Storm Warning for Delaware-Philadelphia-Chester-Montgomery-Bucks Counties for total snow accumulations between 14 and 18inches and winds gusting as high as 40 mph
  • Winter Storm Warning for Sussex-Warren-Hunterdon Counties for total snow accumulations between 13 and 18 inches and winds gusting as high as 45 mph
  • Winter Storm Warning for Salem County for total snow accumulations between 14 and 18 inches and winds gusting as high as 40 mph
https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=PHI&wwa=blizzard warning
https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=PHI&wwa=winter storm warning

View attachment 1194582
NWS-Philly/NYC finally updated their snow maps to include the increased snowfalls mentioned in all of the warnings in the quoted post. Forecast basically went from 8-12" NW of 95 and 12-16" for 95 and 16-20" at the coast to 12-15" NW, 15-20" across 95 and 20-24" towards the coast, so about a 4" increase across the board. Wow. That's a snowstorm. I see why they bumped it up with the meso/hi-res models, which show banding and mesoscale features better, having high end amounts, but there are still many models showing what this morning's forecasts amounts were, so there's some bust potential on the low side. At the same time, though, if some of the bomb models are right and ratios are good, even this forecast could bust a bit low in spots. Crazy to think that is possible given where we were 3-4 days ago wondering whether we'd even have a storm. NWS has me getting 20" in my graphic below. I'm going to go with 18.7" for my house, as I think the storm may underperform their forecast slightly.

As a refresher, precip starts maybe around noon, lightly, as snow N of 78 and rain S of 78 (or maybe just S of 276/195), but either way with temps above 32F almost everywhere, accumulations on paved surfaces will likely be minimal until at least 2-3 pm with light rates and the indirect sunlight (see the hourly graphic for Metuchen, below, to get an idea of conditions, which will be similar in most places). Will likely take until 4-5 pm for accumulations to start going along/SE of 95, but we're not "losing" much precip during daylight hours (maybe 1-2" worth of snow). After that everything will be changing to snow and it'll get much heavier by sunset with temps down to 32F for most and then through the night and even until about noon Monday. The high winds and possible blizzard conditions kick in late Sunday night and last through the end of the storm; those winds and the heavy snow will lead to at least scattered power outages (hopefully the wind keeps most of the snow from accumulating on trees). There will also be moderate to locally major coastal flooding. About to head out for the night so play nicely.

https://www.americanwx.com/bb/topic/62604-the-allsnow-blizzard-of-2026/page/144/#comment-8029922

https://www.weather.gov/phi

1771710331678.png

1771710353027.png

1771711235874.png
 

WhiteBus

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Oct 4, 2011
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Sun's out, 50 degrees. Out for a bike ride. Nothing looks like there will be a huge storm in just over 24 hours. Temps through the entire storm in Philly will not get below 30 degrees, mostly holding at 32. Lots of crazy stuff.
Get out and enjoy the day! It will be good for your back while you're shoveling late tomorrow and all day Monday! 😃
Back on the bike!
A nice 32 mile ride like it was spring time! From my house in Montgomery County, Belmont Hills to Battleship New Jersey and some stops on the way home. Can't believe the storm is going to ruin the rest of February.
 

Knight Shift

Heisman
May 19, 2011
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NWS-Philly/NYC finally updated their snow maps to include the increased snowfalls mentioned in all of the warnings in the quoted post. Forecast basically went from 8-12" NW of 95 and 12-16" for 95 and 16-20" at the coast to 12-15" NW, 15-20" across 95 and 20-24" towards the coast, so about a 4" increase across the board. Wow. That's a snowstorm. I see why they bumped it up with the meso/hi-res models, which show banding and mesoscale features better, having high end amounts, but there are still many models showing what this morning's forecasts amounts were, so there's some bust potential on the low side. At the same time, though, if some of the bomb models are right and ratios are good, even this forecast could bust a bit low in spots. Crazy to think that is possible given where we were 3-4 days ago wondering whether we'd even have a storm. NWS has me getting 20" in my graphic below. I'm going to go with 18.7" for my house, as I think the storm may underperform their forecast slightly.

As a refresher, precip starts maybe around noon, lightly, as snow N of 78 and rain S of 78 (or maybe just S of 276/195), but either way with temps above 32F almost everywhere, accumulations on paved surfaces will likely be minimal until at least 2-3 pm with light rates and the indirect sunlight (see the hourly graphic for Metuchen, below, to get an idea of conditions, which will be similar in most places). Will likely take until 4-5 pm for accumulations to start going along/SE of 95, but we're not "losing" much precip during daylight hours (maybe 1-2" worth of snow). After that everything will be changing to snow and it'll get much heavier by sunset with temps down to 32F for most and then through the night and even until about noon Monday. The high winds and possible blizzard conditions kick in late Sunday night and last through the end of the storm; those winds and the heavy snow will lead to at least scattered power outages (hopefully the wind keeps most of the snow from accumulating on trees). There will also be moderate to locally major coastal flooding. About to head out for the night so play nicely.

https://www.americanwx.com/bb/topic/62604-the-allsnow-blizzard-of-2026/page/144/#comment-8029922

https://www.weather.gov/phi

View attachment 1194764

View attachment 1194765

View attachment 1194799
If accurate, looks like taking a first pass around 10-11 p.m. to clear driveway is good move?
 

bac2therac

Hall of Famer
Jul 30, 2001
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Ukie is 12-18 widespread...snowiest output and definitely getting close to Mt Hollys thinking
 

RUPete90

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I'm not the only who questioned it, ya putz.

So Southeast would be more accurate.
Because one would be Southwest of 95 and be in Princeton, Somerset, etc.
Calm down.

Finally, a reasonable explanation of the infamous I-95 corridor! Forgive Bac, he’s a little keyed up tonight - sort of like when he doesn’t sleep or shower during the days and nights before Selection Sunday. 😂
 

Knight Shift

Heisman
May 19, 2011
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Finally, a reasonable explanation of the infamous I-95 corridor! Forgive Bac, he’s a little keyed up tonight - sort of like when he doesn’t sleep or shower during the days and nights before Selection Sunday. 😂
Many years ago, after Great Adventure was built in Jackson, the only way to get from "the Shore" to Great Adventure was Route 70. When I-195 was built, locals often referred to it as "I-95" for some reason. IDK if the NJ Turnpike was known within NJ as I-95, but hearing north/south of I-95 was a head scratcher. That's why Southeast makes more sense, but seems North/South is used a lot.
 
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Mikemarc

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Nov 28, 2005
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Oh the weenies believe in 2 feet plus

Looks like he went 10-15 for most of NJ

oh yes lots of weenie maps being posted with obscure numbers.

But don’t think this can be Juno 2 because pro Mets aren’t forecasting these numbers. Pro Mets have been fairly conservative I think and this has more of a chance of busting higher than forecasted in my opinion
 

Knight Shift

Heisman
May 19, 2011
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Still trying to figure out a plan for this storm's removal. The last plan was a complete disaster and if I was in charge, I would have lost us WW II.
Same here. Clearing off the driveway at midnight to allow a small layer of storm to be coated with a thick layer of ice was a genius move. Square garden shovel was the only thing that could pry up sheets/chunks of ice.
 

rutgersguy2

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Lee Goldberg is basically 12-18 for entire area woth spots up to 24
I just saw Jeff Smith with that channel 7 forecast…12-18+ for all of NJ) which he said could be conservative ☹️) and locally 24 in some areas if you get one of those 2-3 inch/hour bands hang over you for awhile.
 
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rutgersguy2

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Same here. Clearing off the driveway at midnight to allow a small layer of storm to be coated with a thick layer of ice was a genius move. Square garden shovel was the only thing that could pry up sheets/chunks of ice.
I think you said you had a blower. Personally, with a blower I tend to try to only go out once and try to wait to the point where I think the plows are done and finished blocking the driveway.

For accumulations in the high teens maybe twice for the driveway but I won’t unblock the driveway until it’s all over. Storms like this leave those massive wet snow mountains from the plows and I don’t have any inclination to deal with that twice. If it’s more compact at the end of the driveway, I’ll use the metal snow shovel or garden spade to break it down sections at a time and then let the blower throw it off.

I always spray some lubricant on the chute, augur impeller before going out and it’s especially important for wet heavy snow. Even then I’ve gotten clogs at times but it’s better than nothing.

If I was doing it manually, then yea I’d go out multiple times. I sometimes do that for the steps and such where the blower can’t reach.
 

Knight Shift

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May 19, 2011
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I think you said you had a blower. Personally, with a blower I tend to try to only go out once and try to wait to the point where I think the plows are done and finished blocking the driveway.

For accumulations in the high teens maybe twice for the driveway but I won’t unblock the driveway until it’s all over. Storms like this leave those massive wet snow mountains from the plows and I don’t have any inclination to deal with that twice. If it’s more compact at the end of the driveway, I’ll use the metal snow shovel or garden spade to break it down sections at a time and then let the blower throw it off.

I always spray some lubricant on the chute, augur impeller before going out and it’s especially important for wet heavy snow. Even then I’ve gotten clogs at times but it’s better than nothing.

If I was doing it manually, then yea I’d go out multiple times. I sometimes do that for the steps and such where the blower can’t reach.
I need to get out for fire calls- volunteer firefighter.
There will be a standby crew at the station too, but I like to make sure the driveway is clear at end in case more manpower is needed.
 

Postman_1

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Mar 12, 2017
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yah weird post by DT.

I don’t see any real pros forecasting 2 plus feet like they were during Juno.
DT's mind is gone. He is way to political now. I followed him for weather. Plus he banned me on one of his X for saying the eagles get all the calls after a game that they did.
 
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