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Late Weekend Storm Threat


IsentropicLift

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The vort max that is responsible for this is still hundreds of miles offshore into the Pacific and undoubtably in a poor sampling area. Doesn't come onshore until Saturday night. I would think the 00z runs Saturday night should have a much better handle. That means we still have the next two to three days worth of runs that will likely jump around.

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A lot of the individual 12z EPS members blow up the coastal like the GGEM shows. There are four that are coastal huggers and several others that track inside the benchmark.

 

The ones that blow it up, are they cold enough? One my fears is that the initial overrunning trends weaker, but by the time the ULL bombs, the HP is sliding east and we warm 

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The vort max that is responsible for this is still hundreds of miles offshore into the Pacific and undoubtably in a poor sampling area. Doesn't come onshore until Saturday night. I would think the 00z runs Saturday night should have a much better handle. That means we still have the next two to three days worth of runs that will likely jump around.

God let's hope it's not that late, that's about 48 hours before

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Historically, this is our wheelhouse. We have more big snow storms between 2/5 and 2/14 than any other time in the winter in the last 35-40 years.

1960...3/3-4.........14.5"

1960...12/11-12...15.2"

1961...2/3-4.........17.4"

1964...1/12-13.....12.5"

1967...2/7............12.5"

1969...2/9-10.......15.3"

1978...1/19-20.....13.6"

1978...2/6-7.........17.7"

1979...2/19..........12.7"

1983...2/11-12.....17.6"

1993...3/13-14.....10.6"

1994...2/11..........12.8"

1995...2/4............10.8"

1996...1/7-8.........20.2"

1996...2/16-17.....10.7"

2000...12/30........12.0"

2003...2/16-17.....19.8"

2003...12/5-6.......14.0"

2004...1/28..........10.4"

2005...1/22-23.....13.8"

2006...2/11-12.....26.9"

2009...12/19-20...10.9"

2010...2/9-10.......10.0"

2010...2/25-26.....20.9"

2010...12/26-27...20.0"

2011...1/26-27.....19.0"

2013...2/8-9.........11.4"

2014...1/21..........11.5"

2014...2/13............9.5"/3.0"

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1960...3/3-4.........14.5"

1960...12/11-12...15.2"

1961...2/3-4.........17.4"

1964...1/12-13.....12.5"

1967...2/7............12.5"

1969...2/9-10.......15.3"

1978...1/19-20.....13.6"

1978...2/6-7.........17.7"

1979...2/19..........12.7"

1983...2/11-12.....17.6"

1993...3/13-14.....10.6"

1994...2/11..........12.8"

1995...2/4............10.8"

1996...1/7-8.........20.2"

1996...2/16-17.....10.7"

2000...12/30........12.0"

2003...2/16-17.....19.8"

2003...12/5-6.......14.0"

2004...1/28..........10.4"

2005...1/22-23.....13.8"

2006...2/11-12.....26.9"

2009...12/19-20...10.9"

2010...2/9-10.......10.0"

2010...2/25-26.....20.9"

2010...12/26-27...20.0"

2011...1/26-27.....19.0"

2013...2/8-9.........11.4"

2014...1/21..........11.5"

2014...2/13............9.5"/3.0"

Thanks Uncle W , I did not have the data, just memory

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So we can expect snow from Sunday night into Monday at this time. I'm hearing lots of versions and would like a idea what might be the end results.

follow along.  Situation is still fluid and subject to change 4 days out.   As it stands now, could be snow at some point Sunday-Tue with some breaks in b/w each shortwave.

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 I was two months short of my 14th birthday and loved walking the great wide white tundra of 75th street in dyker heights, Brooklyn. Great storm season 60-61.

Rich

I got sick the next day which was a Sunday and couldn't go out and play until Thursday...I broke my sled from over use...

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3 waves all of them jammed together

all of them with very nice surface pressures -no arguments on this

 

this is the 18z GEFS ENS loop

Saturday 7:00pm -Tuesday 1:00am

 

 

Cold sector holds for NYC...no arguments for the most part

last three frames spell our trouble ATM

 

500 vort a bit to far east on Tuesday 7:00am

Little QPF

Atlantic Low pressure prog  (3) lows???? Monday 7:00pm

 

My take-

Cold will bring us snow--

to expect all three shortwaves to travel 3,000 miles intact??? not so sure bout that  

you can see the model can't handle the unsampled logjam at this point

three swings into a nice cold air mass

lets hope we don't strike out here  

 

dm

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Great chart it really show how global warming has shorten the winter.

 

Good observation:  One 6"+ snowstorm in Nov/April in the last 50 years vs. 10 such storms in the 96 years prior to that certainly seems compelling.  However, I don't know if the sample size is significant enough.  Also, didn't Oct 2009 (Halloween storm) or Nov 2012 (after Sandy) get to 6"?  They did in the Edison area, iirc.  And if they did (or were really close, such that maybe the 6" criterion isn't the best cutoff), that's 3 in the last 50 years vs. 10 in the previous 96, which is a much closer ratio - and with a small sample size, I'd wager both are not statistically different.  At least worth considering...

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Good observation:  One 6"+ snowstorm in Nov/April in the last 50 years vs. 10 such storms in the 96 years prior to that certainly seems compelling.  However, I don't know if the sample size is significant enough.  Also, didn't Oct 2009 (Halloween storm) or Nov 2012 (after Sandy) get to 6"?  They did in the Edison area, iirc.  And if they did (or were really close, such that maybe the 6" criterion isn't the best cutoff), that's 3 in the last 50 years vs. 10 in the previous 96, which is a much closer ratio - and with a small sample size, I'd wager both are not statistically different.  At least worth considering...

That's the problem, weather data history is too short to see long term patterns.

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Great chart it really show how global warming has shorten the winter.

 

Nice write-up by the CWG guys regarding a similar theme in DC (loss of early and late season snows)

 

http://www.washingtonpost.com/blogs/capital-weather-gang/post/does-the-less-snow-more-blizzards-global-warming-theory-hold-up-in-washington-dc/2013/02/20/3de44236-7acf-11e2-9a75-dab0201670da_blog.html

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Good observation:  One 6"+ snowstorm in Nov/April in the last 50 years vs. 10 such storms in the 96 years prior to that certainly seems compelling.  However, I don't know if the sample size is significant enough.  Also, didn't Oct 2009 (Halloween storm) or Nov 2012 (after Sandy) get to 6"?  They did in the Edison area, iirc.  And if they did (or were really close, such that maybe the 6" criterion isn't the best cutoff), that's 3 in the last 50 years vs. 10 in the previous 96, which is a much closer ratio - and with a small sample size, I'd wager both are not statistically different.  At least worth considering...

This is NYC only.

Oct 2009 had 0.0" in NYC.

Oct 2011 had 2.9" and November 2012 had 4.7".

 

Some mod should move this all into the banter thread.

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