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Feb 8th-9th Do We Finally Get A Coastal?


dryslot

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Can we have a Euro-nails-it-7-days-away-then-loses-it-in-4-days-then-brings-it-back like winters of old...

 

Verbatim, too warm for CP but still something interesting to track.

 

I'm skeptical with the fast h5 flow we still have at the end of the week, but Euro is stubborn.

 

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Can we have a Euro-nails-it-7-days-away-then-loses-it-in-4-days-then-brings-it-back like winters of old...

 

Verbatim, too warm for CP but still something interesting to track.

 

I'm skeptical with the fast h5 flow we still have at the end of the week, but Euro is stubborn.

 

attachicon.gif00zeuro850mbTSLPUS120.gif

 

 

Verbatim, it would prob even flash to S+ on the CP for a time at the end...that is crazy dynamic on the Euro....can't believe it right now though.

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How many runs in a row is this showing a bomb on the Euro now? 

 

It's not usually consistently wrong, so it should be interesting to watch the next few runs...

 

 

3 runs now. Still want to see another couple before believing it and also some support from other guidance.

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How many runs in a row is this showing a bomb on the Euro now? 

 

It's not usually consistently wrong, so it should be interesting to watch the next few runs...

 

It showed a big coastal on 3 runs for one of the threats this year and then it completely lost it

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Euro will come around this run to the other guidance. Seems to only go off the range for 2 runs at a time. Ggem has no signs of the euro tempest either. Just some energy moving along west to east.

Snowy week inbound but a major low seems improbable

i was thinking this as well... but nope.... lol.

its a lot different/faster with the southern stream.

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Trying very hard not to get my hopes up, history this year tells us that the models are gonna completely lose this thing.. 

 

Yup, the way this winter has gone, its either gonna go totally flat or its gonna blow up 400 miles east of where its currently modeled.

 

Id be comfortable if it was progged to be over Buffalo, then maybe it would trend out to the benchmark.

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HPC sees support for a coastal benchmark track albeit not as deep as the euro.  Ddid Euro end have a coastal storm at all?  I like the sound of this for a solid moderate snowstorm for most of us.

 

 

WITH MUCH OF THE 4/00Z GUIDANCE IN...THERE IS PLENTY OF SUPPORTFOR COMPLEX COASTAL WAVE DEVELOPMENT AND SECONDARY INTENSIFICATIONOF A SURFACE WAVE OFF THE IMMEDIATE COASTLINE (IN THE OUTER BANKSAND BLOCK ISLAND CORRIDOR) ON FRIDAY AFTERNOON/EVENING. THE MANUALGRAPHICS CERTAINLY ARE NOT PERFECT PROGS...BUT I DID DRAW A SFCLOW TRACK (AND INTERMEDIATE POSITION)...PASSING OVER THE BENCHMARKBEFORE 9/00Z IN THE NEIGHBORHOOD OF 1004 MB AND DEEPENING TO 996MBEAST OF HALIFAX NS AROUND 9/12Z. THIS INTERMEDIATE PROG (VALID9/00Z) IS CLOSER TO THE 4/00Z UKMET FOR DEPTH BUT HONORS THE TRACKOF THE 3/12Z ECMWF PACKAGE AND THE 4/00Z OPERATIONAL ECMWF. THEDEEPEST SFC PRESSURE AT 983 MB AS IT ENTERS THE SW GULF OF MAINEAFTER 9/00Z MIGHT BE OVERDONE...BUT THE TRENDS FROM YESTERDAYSUPPORT ONE LAST CYCLONE (CLIPPER) BEFORE THE ARCTIC AIRMASSRETREATS AWAY FROM THE EASTERN SEABOARD.
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NATIONAL WEATHER SERVICE TAUNTON MA

442 AM EST MON FEB 4 2013

FRI...

00Z ECMWF REMAINS ON THE ONLY PIECE OF MODEL GUIDANCE THAT SIMULATES

PHASING OF STREAMS WITH SIGNIFICANT TROUGH AMPLIFICATION AT OUR

LONGITUDE. THIS YIELDS CYCLOGENESIS SOUTH OF LONG ISLAND FRI WITH

LOW TRACKING CLOSE TO NANTUCKET/CAPE COD LATE FRI/FRI NIGHT. IF THIS

TRACK VERIFIES WARMER AIR WOULD INVADE MOST OF THE REGION WITH SNOW

TO RAIN AND THEN BACK TO SNOW AS LOW PULLS AWAY.

REMAINDER OF THE GUIDANCE INCLUDING THE GEFS AND ECENS ENSEMBLES

DELAY PHASING/TROUGH AMPLIFICATION EAST OF NEW ENGLAND...RESULTING

IN LESS QPF AND IMPACT TO THE REGION. AT THIS TIME RANGE ITS PRUDENT

NOT TO CHASE ONE INDIVIDUAL DETERMINISTIC MODEL. HOWEVER THIS IS THE

4TH MODEL CYCLE OF THE ECMWF SIMULATING A BIG QPF EVENT FOR THE

AREA. THE ECMWF MAY BE ONTO SOMETHING AS THE ARCTIC OSCILLATION

SUGGEST A POSSIBLE REGIME CHANGE AS IT ABRUPTLY CHANGES FROM

POSITIVE TO NEGATIVE THIS WEEK INTO THE WEEKEND. THIS WOULD LEND

SUPPORT TO A SIGNIFICANT EVENT. DEFINITELY SOMETHING TO WATCH THIS

WEEK.

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ukie would be a nice set-up. it's closer to the BM and wouldn't flood the region with nearly the amount of mid and low-level warmth the euro would. also has a nice HP placement. all just speculation obviously based on the time frame.

 

the GFS would just be a period of mix/rain for a chunk of the area and some lighter snows over the interior. 

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one thing to take note of...though the seasonable trend has been "fast / progressive / late bloomer etc etc blah blah" this one late week isn't solely a northern stream feature getting mushed in the tight W flow aloft. there's a notable southern stream disturbance moving in concert with the northern stream energy. this doesn't mean they will phase and be a bomb by any means but we might need to be careful thinking the "seasonal trend" is the reason this fails. 

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