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NYC/PHL January 7-9 Potential Part Deux


NickD2011

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pretty impressive qpf amounts from it, i didnt expect this..but between the nam and the gfs, nyc could be dealing with another distruptive snowstorm..ut oh :arrowhead:

Dont get me wrong, 3-6 is a very decent amount from a set up like this, but I dont think it would be disruptive-- especially since its occurring mostly going into the weekend.

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Dont get me wrong, 3-6 is a very decent amount from a set up like this, but I dont think it would be disruptive-- especially since its occurring mostly going into the weekend.

3-6" would be disruptive, nyc never stops running lol

large swath of 8" or more in SE new york state

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One of the most awesome videos ever created

Ahhh that was awesome and brought back some fond memories :thumbsup:

Its hard for some people to understand the sentimentality-- but trying to put it in perspective-- that thing flew over this area every morning at just before a quarter to nine, pretty much around the same time our school bells rang in the morning (elementary school.) So as soon as we heard the roar of the plane we would first look up and then run inside (because we couldnt hear the bells from the outside lol)... so that plane is locked up with much of my childhood. Pretty much took it for granted back then as no one ever expected that thing to ever stop flying. It had the cleanest record of any plane and they were just looking for a reason to shut it down.

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Are there any analogs for this storm? I would see for myself on that CIPS site but since I'm an idiot I have no clue how to use it.

There are the analogs for 72 hours...I don't think any of those off memory were big events but I may be wrong...

http://www.eas.slu.edu/CIPS/ANALOG/stats.php?reg=EAST&model=GFS212&fhr=072&flg=new

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HPC Heavy Snow Discussion

THIS WILL DEVELOP ASFC CYCLONE OFF THE NORTHEAST COAST ON FRI. THE LOW ITSELF ISSTILL PROGGED TO REMAIN WELL OFFSHORE... YET ALL GUIDANCE EXTENDSA TROF THROUGH THE DELAWARE RIVER VLY WHERE SFC CONVERGENCECOUPLED WITH THE UPR DYNAMIC SHOULD FOSTER MDT SNOWFALL FOR THENRN MID-ATLC THRU LWR NEW ENG AND SRN NY. GFS IS THE STRONGESTWITH THIS FTR BUT CANNOT BE DISCOUNTER OUTRIGHT... SO IT WASBLENDED WITH THE MORE CONSISTENT ECMWF AND UKMET TO ACHIEVE ASTRIPE OF 6-8 INCHES IN SRN NY/NORTHEAST PA/NRN NJ. NAM WAS MUCHWEAKER WITH THIS TROF THAN CONSENSUS WITH A FARTHER OFFSHORELOW... YET IT TOO FCSTS MDT SNOWFALL. 00Z GUIDANCE HANDLES THISSFC TROF POSITION RATHER SIMILARLY EXCEPT FOR THE SREF WHICH WAS ANOTABLE OUTLIER NORTHWARD AND WAS DISCOUNTED.

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There are the analogs for 72 hours...I don't think any of those off memory were big events but I may be wrong...

http://www.eas.slu.e...fhr=072&flg=new

I think I remember the 3-10-01 event. It was a moderate storm but it was disruptive because of timing (and perhaps lack of warning?) My family and I got caught in it trying to drive to BDL to go to FL..took us like 3 or 4 hours to get there when it's normally a 50 minute drive.

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Inverted trough feature on the GFS is relatively effecting the same areas but is quicker with it moving thru so has dropped back on the QPF totals .

As for the second system on the 6 Z GFS it is back and on the table..verbatim this run

http://raleighwx.ame...bTSLPp06174.gif

http://raleighwx.ame...bTSLPp06180.gif

http://raleighwx.americanwx.com/models/gfs/06zgfs850mbTSLPp12192.gif

thumbsupsmileyanim.gifSnowman.gif

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Inverted trough feature on the GFS is relatively effecting the same areas but is quicker with it moving thru so has dropped back on the QPF totals .

As for the second system on the 6 Z GFS it is back and on the table..verbatim this run

http://raleighwx.ame...bTSLPp06174.gif

http://raleighwx.ame...bTSLPp06180.gif

http://raleighwx.ame...bTSLPp12192.gif

thumbsupsmileyanim.gifSnowman.gif

Seems like a fair trade off, dont you think?

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mt holly

ATTM, THE CURRENT THINKING IS THAT THIS COULD BE AN ADVISORY OR

LOW END WARNING EVENT DEPENDING ON HOW THINGS PLAY OUT. QPF IS

GENLY 0.10 OR LESS OVER EXTREME SRN AREAS AROUND 0.25 INCHES FROM

PHL NWD AND AROUND 0.50 INCHES OVER THE EXTREME NE.

ONE IMPORTANT NOTE HERE IS THAT FCST HIGH TEMPS ON FRIDAY ARE IN

THE MID TO UPPER 30S. IF THESE TEMPS VERIFY, IT WOULD SEEM THAT

COULD INHIBIT ACCUMULATION DURING THE DAYLIGHT HOURS.

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mt holly

ATTM, THE CURRENT THINKING IS THAT THIS COULD BE AN ADVISORY OR

LOW END WARNING EVENT DEPENDING ON HOW THINGS PLAY OUT. QPF IS

GENLY 0.10 OR LESS OVER EXTREME SRN AREAS AROUND 0.25 INCHES FROM

PHL NWD AND AROUND 0.50 INCHES OVER THE EXTREME NE.

ONE IMPORTANT NOTE HERE IS THAT FCST HIGH TEMPS ON FRIDAY ARE IN

THE MID TO UPPER 30S. IF THESE TEMPS VERIFY, IT WOULD SEEM THAT

COULD INHIBIT ACCUMULATION DURING THE DAYLIGHT HOURS.

sounds like theyre going for either 3-6 or 4-8

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sounds like theyre going for either 3-6 or 4-8

I think verbatiam if the snow was tonight they would go 3-6 from rt 1 corridor-north....2-4 1-95-holmdel and 1-3 south of that....but thats just me....

This will be a good test for nyc as to see how lucky we are this year...im a firm believer in what paul kocin said back in the winter of 04-05 on how it will snow where it has been snowing and not snow where it has not been snowing...granted the sample size is just one storm so far....but i wonder if this is nyc year?

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I think verbatiam if the snow was tonight they would go 3-6 from rt 1 corridor-north....2-4 1-95-holmdel and 1-3 south of that....but thats just me....

This will be a good test for nyc as to see how lucky we are this year...im a firm believer in what paul kocin said back in the winter of 04-05 on how it will snow where it has been snowing and not snow where it has not been snowing...granted the sample size is just one storm so far....but i wonder if this is nyc year?

ABC has close to that depiction-- from memory Goldberg had 1-3 for Interior Monmouth County and SW.... 3-6 inches of snow for eastern NJ, NJ, LHV and Western Long Island... he has 6-10 inches for Suffolk County, Most of Connecticut and the Hudson Valley north of Westchester County.

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Something I find interesting is the last few runs of the GFS regarding the storm next week. Yesterdays 12Z and 18 Z runs showed very similar outcomes whereas this mornings 0Z run was completely different and suppressed. Now the 6Z run comes back looking the same as the 12Z and 18Z. What was the difference in the data input? I think situations like this offer a good opportunity for the people at NCEP to examine the model to figure out how it comes to these different solutions.

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Something I find interesting is the last few runs of the GFS regarding the storm next week. Yesterdays 12Z and 18 Z runs showed very similar outcomes whereas this mornings 0Z run was completely different and suppressed. Now the 6Z run comes back looking the same as the 12Z and 18Z. What was the difference in the data input? I think situations like this offer a good opportunity for the people at NCEP to examine the model to figure out how it comes to these different solutions.

NAM clowm map had 1-2" from Rt.78 North in NJ/NYC.

Must be seeing some warmer surface temps...

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