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3/17-3/18 Storm Threat Discussion


Zelocita Weather

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Can you link or paste Upton's latest? On my phone here

With pleasure: 

MODEL GUIDANCE BEGINS TO DEVIATE RIGHT OFF THE BAT DUE TO THE

UNCERTAINTY WITH A NORTHERN STREAM SHORTWAVE MOVING INTO THE PAC

NW ON FRI AND THE SOUTHERN STREAM TROUGH OVER THE SOUTHWEST. THE

INTERACTION OF THE ENERGY ASSOCIATED WITH THESE FEATURES WILL

INFLUENCE OUR WEATHER SUN NIGHT THROUGH MON. SUNYSB SENSITIVITY

ANALYSIS INDICATES THE UNCERTAINTY BEGINS 24-36 HOURS FROM

NOW...AND IS ASSOCIATED WITH THE HEIGHTS ACROSS WRN PORTION OF THE

COUNTRY. THIS IS LENDING TO LARGE DISAGREEMENT WITH THE TROUGH AS

THE TWO STREAMS MERGE IN THE LEE OF THE ROCKIES. THE ONE STRONG

INDICATOR OF THIS ANALYSIS IS THAT THE EC/GFS AND CMC ENSEMBLE

SYSTEMS ARE ALL INDICATING A TRACK FURTHER N THAN WHAT THE

OPERATIONAL GUIDANCE IS PROVIDING. THE CMC HAS BEEN CONSISTENT

OVER THE LAST FEW DAYS AND IS THE FURTHEST N WITH THE SYSTEM...SO

HAVE WEIGHTED THIS WITH WPC`S GUIDANCE AS IT FIT THE SCENARIO.

WHILE IT WILL BE ANOTHER DAY OR TWO BEFORE THERE IS BETTER

SAMPLING OF THE UPPER LEVEL DATA ASSOCIATED WITH THIS...TODAYS

OPERATIONAL MODELS HAVE TRENDED FURTHER N...WHICH IS A STEP IN THE

RIGHT DIRECTION. 

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Actually, nothing new from NWS-NYC since the regular ~4 pm AFD, which said...

WHILE IT WILL BE ANOTHER DAY OR TWO BEFORE THERE IS BETTER

SAMPLING OF THE UPPER LEVEL DATA ASSOCIATED WITH THIS...TODAYS

OPERATIONAL MODELS HAVE TRENDED FURTHER N...WHICH IS A STEP IN THE

RIGHT DIRECTION. POLAR VORTEX OVER SE CANADA WILL PROVIDE THE COLD

AIR FOR A SNOW EVENT...AND THERE IS A PERIOD OF OVERRUNNING BUT THE

QUESTION REMAINS HOW FAR N DOES THE CENTER OF THE LOW (AND THE

HIGHER QPF VALUES) GET. TIMING IS ALSO AN ISSUE.

Updated at 1018p

 

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE NEW YORK NY

1018 PM EDT THU MAR 13 2014

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Actually, nothing new from NWS-NYC since the regular ~4 pm AFD, which said...

WHILE IT WILL BE ANOTHER DAY OR TWO BEFORE THERE IS BETTER

SAMPLING OF THE UPPER LEVEL DATA ASSOCIATED WITH THIS...TODAYS

OPERATIONAL MODELS HAVE TRENDED FURTHER N...WHICH IS A STEP IN THE

RIGHT DIRECTION. POLAR VORTEX OVER SE CANADA WILL PROVIDE THE COLD

AIR FOR A SNOW EVENT...AND THERE IS A PERIOD OF OVERRUNNING BUT THE

QUESTION REMAINS HOW FAR N DOES THE CENTER OF THE LOW (AND THE

HIGHER QPF VALUES) GET. TIMING IS ALSO AN ISSUE.

 

 

Updated at 1018p

 

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE NEW YORK NY

1018 PM EDT THU MAR 13 2014

 

The text we both quoted was from 4:37 pm today - go back and look at the link, below. At 10:18 pm, they only updated the aviation and marine sections of the AFD - you can see what they updated by clicking on the "highlight changed disussion" hotlink at the top of any AFD page.

http://forecast.weather.gov/product.php?site=NWS&issuedby=OKX&product=AFD&format=CI&version=3&glossary=1&highlight=on

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Are you sure you're not thinking of the March 1993 Superstorm, where a ton of sleet fell, holding accumulations in most of the immediate NYC area down to 10-14" vs. 24"+ where it was all snow? I live 30 miles SW of NYC and don't recall much if any sleet on 2/17/03 - thought the sleet was confined to Monmouth and south of there, as per Ray's archive...

http://www.raymondcmartinjr.com/weather/2003/17-Feb-03.html

 

No, in 93 we got about 24" of snow in the Shenandoah Valley.

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This is looking like a 12-15 inch potential and a very strong potential right now. Looking almost like a certainty to imminent now for 3/17. This could be one in 30 year event..........

Sure you don't want to lead with a question? I.e., "Anyone think this will be a 12-15" event?"

Also, where us the patented hunch or bet?

C'mon Hobbyist, you're losing your mojo...

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Euro anyone? I think I speak for a lot of people in here when I say I'm ready for spring, but it would be pretty awesome to end winter with a nice BANG! Especially a winter of the magnitude that we just had. We've had so much luck this winter season it just seems like it can't possibly end with two storms completely defying that luck. With that said, this will surely find a way to bust!  :cry:

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Do you think we can dethrone 3/1956 or 3/1993 blizzards for Long Island ??? I don't think we will beat 3/1888 ? I am going with 12-15 inch snow for LI that may last for two weeks with Arctic cold locked in from 3/17-3/30 most of the time...

Better, but not quite what we've come to expect from you...

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