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00z Models 2/11/2014 | Potential Major Coastal Storm


earthlight

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It was good to know it didn't go further west and we're starting to get a good idea on the actual track though additional fine tuning will still need to occur tomorrow and probably into early Wednesday. I don't think it'll go any further west given the kicker and where it tracks prior to it arriving to our locales. I think most models take it near OBX, which is huge for us. 

 

Hopefully there are slight ticks east tomorrow so we can all be happy. 

 

A blend of the Euro/GGEM/GFS looks appropriate at this time to me.

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According to my wb maps. The 850s only goes above zero on LI between hrs 66 and 72 then crash again. Most up the precip looks to fall frozen before any change over. Surface temps in the low 30s rising to the mid 30s verbatim.

Yep, everybody does very well this run. Even places that mix or changeover for a period of time. I'd hate to be out in Central PA though. Some models have zilch and now the euro comes in and gives them a foot

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700mb and 850mb lows track SE enough for NYC NW to get heavier snow on the Euro.

 

Looking at the mid level lows on the GFS earlier, the 850mb low was in a great spot. 75 miles give or take NW of the 850mb low should be golden for some of the heaviest stuff, which is why at this range I still can't buy the SFC depictions somewhat. I'd rather look at 500mb/700/850 and take it from there.

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78 984 off Cape Cod... CCB draining back down over NNJ... thermal profiles have absolutely crashed

 

This was a great Euro run... for one simple fact- it went no further west

Yes, great point!  I don't foresee anymore major shifts west. (Well who knows)

Was it just me or was the euro a tad faster this run?

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Yes, great point!  I don't foresee anymore major shifts west. (Well who knows)

Was it just me or was the euro a tad faster this run?

 

I wasn't around earlier today for the 12z runs so I'm not exactly sure, maybe someone else could answer that. But as to the west trend, I'm hoping at this point that that would be the furthest west we will go with this, like I was discussing earlier I just can't see it coming MUCH further west with that kicker at this point (of course wobbles either way are inherent).

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I wasn't around earlier today for the 12z runs so I'm not exactly sure, maybe someone else could answer that. But as to the west trend, I'm hoping at this point that that would be the furthest west we will go with this, like I was discussing earlier I just can't see it coming MUCH further west with that kicker at this point (of course wobbles either way are inherent).

The "kicker" idea can be tricky though, occasionally the models have mistaken those Lakes Features as kickers and in reality they dig and actually pull the storm more west like the january 2000 event did...I don't think that will happen here as of now though as that system looks too progressive

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The "kicker" idea can be tricky though, occasionally the models have mistaken those Lakes Features as kickers and in reality they dig and actually pull the storm more west like the january 2000 event did...I don't think that will happen here as of now though as that system looks too progressive

 

Agreed, I think if it were to dig like you said it could buckle the flow out ahead of it and cause this to come further inland, especially the quicker the southern trough turns negative. This is something we should certainly keep an eye on because northern stream s/w's have been tricky in the modeling all winter long to this point.

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im colorblind I can't read these maps :( how much for long island? sorry to ask

 

Ignore the poorly drawn map: 2/11/1983 was a 20 inch storm for N. Jersey, NYC and L.I....blizzard warnings were issued that Friday afternoon and produced some of the most intense snowfall rates ever seen in these parts.

Air temps were a good deal different than they will be during this storm though; generally hovering around 20 F for the duration.

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Ignore the poorly drawn map: 2/11/1983 was a 20 inch storm for N. Jersey, NYC and L.I....blizzard warnings were issued that Friday afternoon and produced some of the most intense snowfall rates ever seen in these parts.

Air temps were a good deal different than they will be during this storm though; generally hovering around 20 F for the duration.

Snow came in like a wall immedt 2in hr in early afternoon, within 30 minutes school shut down. It was a Friday afternoon. remember it like it was yesterday. Magnificent storm. by around the 11p newscast I believe CPK was already over a foot and still accumilating ( I remember mr G's face sadly ) 

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MODEL DIAGNOSTIC DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
150 AM EST TUE FEB 11 2014

VALID FEB 11/0000 UTC THRU FEB 14/1200 UTC

...SEE NOUS42 KWNO (ADMNFD) FOR THE STATUS OF THE UPPER AIR
INGEST...


00Z MODEL EVALUATION WITH FINAL PREFERENCES
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NAM/GFS INITIALIZATION ERRORS DO NOT APPEAR TO SIGNIFICANTLY
AFFECT THEIR LARGE SCALE OUTPUT.


EASTERN U.S. CYCLONE AND WINTER STORM
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
PREFERENCE: BLEND OF 12Z UKMET / 12Z EC MEAN
OR A BLEND OF 00Z GFS / 00Z ECMWF POSITION
CONFIDENCE: AVERAGE

THE 00Z NAM IS DIFFERENT EARLY IN THE SHORT RANGE...REGARDING A
NRN STREAM SHORTWAVE CURRENTLY ENTERING BRITISH COLUMBIA EARLY
THIS MORNING. THIS CONTINUES DOWNSTREAM WITH A SLOWER/NORTHWARD
DISPLACED MID-LEVEL JET STREAK BY WED MORNING OVER THE CNTRL HIGH
PLAINS...A FEATURE WHICH HOLDS GOOD CONTINUITY IN THE
GFS/ECMWF/UKMET. THIS RESULTS IN A LESS AMPLIFIED UPPER TROUGH IN
THE NAM BY EARLY THU OVER THE CNTRL APPALACHIANS.

THE ENSEMBLE SCATTER LOW PLOTS ARE MORE TIGHTLY CLUSTERED TODAY
THAN YESTERDAY...WHICH SHOULD BE EXPECTED...BUT THEY HAVE MADE A
WHOLESALE SHIFT SLOWER AND WEST. THE ECMWF MEMBERS ARE ON THE WEST
SIDE OF THE LATEST LOW PLOT ENVELOPE...INITIALIZED
12Z/10...FOLLOWED BY THE GEFS/CMC MEMBERS JUST EAST OF THE ECMWF
MEMBER CLUSTER DURING THE DAY ON THURSDAY. THIS PRECLUDES USE OF
THE 00Z CMC WHICH CONTINUES TO BE MUCH FASTER THAN THE CONSENSUS.
THE 00Z UKMET IS LIKELY THE MOST AGGRESSIVE MODEL WITH HOW FAR
SOUTH THE UPPER TROUGH DIGS INTO THE SOUTHEAST AND ENDS UP WEST OF
ITS 12Z RUN WITH THE SURFACE LOW...AND IS LIKELY TOO FAR WEST. THE
00Z ECMWF HAS SHIFTED ITS LOW TRACK EAST SLIGHTLY FROM ITS 12Z
RUN...20-40 MILES...ALONG THE MID-ATLANTIC COAST BUT IS NEARLY
IDENTICAL TO ITS PREVIOUS RUN NEAR THE NEW ENGLAND COAST. THE 00Z
ECMWF IS STILL A BIT WEST OF THE 12Z EC MEAN NEAR NEW ENGLAND.
GIVEN THESE ADJUSTMENTS...STILL FEEL THE 00Z GFS IS A TAD TOO FAR
EAST...AND TOO WEAK...PERHAPS RELATED TO POSSIBLE CONVECTIVE
FEEDBACK ALONG THE MID-ATLANTIC COAST THURSDAY MORNING. THE
PREVIOUS PREFERENCE CONTINUES...BUT TO INCLUDE THE LATEST 00Z
MODEL SUITE...THE POSITION OF THE BLENDED 00Z ECMWF/GFS APPEARS
MOST USABLE...WITH THE STRENGTH OF THE 00Z ECMWF

 

http://www.wpc.ncep.noaa.gov/discussions/hpcdiscussions.php?disc=pmdhmd

 

OPC look in

48hrs  980mb Atlantic City

 wow just wow

 

A_48hrbw.gifA_48hr500bw.gifhttp://www.opc.ncep.noaa.gov/Atl_tab.shtml

 

 

 

 

 

 

 

 

 

notice the clusters are on the east side of this track 

lowtrack_ensembles.gif

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