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Friday, January 21st Storm Discussion II


Baroclinic Zone

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again I hear the eastern drums,and yet again will the deformation band set up in connecticut? lets look at what might really happen. any potential screw zones like eastern CT/RI? or is this one going to be a different animal all together.If you ask me ill take it looking like its going for easten new england as long as i can get under any trough.

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again I hear the eastern drums,and yet again will the deformation band set up in connecticut? lets look at what might really happen. any potential screw zones like eastern CT/RI? or is this one going to be a different animal all together.If you ask me ill take it looking like its going for easten new england as long as i can get under any trough.

I gotta look a little more closely...by this one looks fairly uniform in coverage...just a bit more in eastern areas. Was thinking 3-6" statewide...but could easily be 4-8" if 12z suite holds.

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I gotta look a little more closely...by this one looks fairly uniform in coverage...just a bit more in eastern areas. Was thinking 3-6" statewide...but could easily be 4-8" if 12z suite holds.

It would ber nice to see a uniform snow event for once. no troughs ,no snow holes please.lol

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What I don't understand is models bring the storm closer as well as the QPF amounts are higher .50 inch into southern Nh. But all the tv mets have brought the accumulation amounts down in southern Nh?? why is this? With high ratios I would think it would at least be 3-7"!!

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What I don't understand is models bring the storm closer as well as the QPF amounts are higher .50 inch into southern Nh. But all the tv mets have brought the accumulation amounts down in southern Nh?? why is this? With high ratios I would think it would at least be 3-7"!!

I know, but don't worry, if today goes the way it is, we should see all of these get raised.

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As expected the NW trend kicks in at the eleventh hour and advisories are hoisted. General 3-6" forecast here from BOX at this time and, based on current trends I wouldn't be at all surprised to see a few more tacked on. Hey Messenger!!! what happened to all guidance pointing to a SE trend? Pattern recognition. Funny how jaded everyone is getting poo-pooing advisory level events.lol Good week so far here on the East slope, 6.75" Tuesday, 2.5" Wednesday, another 6" possible tonight then into the ice box with double digit negatives. Big Winter incoming, Big Big Winter.

Every piece of guidance was going se for days pete, don't pretend it didn't happen.

You have a way of selecting comments out of context. I said a bunch of times the witching hour for models started around 36-42 hours and that it'd be the 0z run last night where it'd begin to matter as the southern s/w cleared the rockies and the northern s/w crossed the border.

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Read and enjoy. No use bickering and complaining about what was discussed/debated in the past couple days. It's going to snow. Once again I have proven my worth with these juju threads. La Epic!

.SHORT TERM /6 PM THIS EVENING THROUGH 6 PM FRIDAY/...

AT LEAST A PLOWABLE SNOW EVENT LIKELY FOR SNE LATE TONIGHT INTO

FRIDAY.

NORTHERN STREAM TROF MOVES EAST FROM THE GT LAKES TONIGHT AND

INTERACTS WITH SOUTHERN STREAM SHORTWAVE APPROACHING THE SE US.

COASTAL LOW WILL DEVELOP ALONG MID ATLC COAST IN RESPONSE TO LEFT

EXIT REGION OF SOUTHERN STREAM JET THEN MOVE NE. THE CHALLENGE IS

THE TRACK OF THIS LOW AND HOW QUICK DEEPNING OCCURS.

THERE IS ENOUGH MODEL SPREAD WHICH WILL MAKE FOR A DIFFICULT SNOW

ACCUM FORECAST. 00Z GFS/NAM/GGEM/UKMET WERE IN GOOD AGREEMENT ON

LOW TRACK NEAR THE BENCHMARK FRI MORNING WITH MOST RAPID DEEPENING

AFTER THE STORM PASSES NEW ENG. THE RESULT WAS A LIGHT TO MODERATE

SNOWFALL. HOWEVER...00Z ECMWF AND 06Z NAM HAVE TRENDED NW INSIDE

THE BENCHMARK WITH THE NAM TRACKING THE LOW NEAR NANTUCKET.

QUICKER PHASING HAS ALLOWED A MORE NEG TILT TROF AND RAPID

DEEPENING OF THE SFC LOW AS IT CROSSES OUR LATITUDE. THERE WAS

ALSO A NOTABLE INCREASE IN QPF AMOUNTS WITH POTENTIAL FOR

SIGNIFICANT SNOWFALL.

WE ARE NOT READY TO COMPLETELY JUMP ON THE NAM AS THIS STILL

REMAINS AN OPEN WAVE AT 850/700 MB WHICH WILL RESULT IN

PROGRESSIVE SYSTEM WITH LIMITED DURATION OF HEAVY BANDED SNOW

HOWEVER...THERE ARE STRONG SIGNALS FOR A BRIEF PERIOD OF HEAVY

SNOW AROUND 12Z WITH EXCELLENT SNOW GROWTH OMEGA AND CROSS

SECTIONS INDICATING -EPV ABOVE MODEST LOW/MID LEVEL FRONTOGENESIS.

THIS WILL RESULT IN A PERIOD OF HEAVY SNOW AROUND THE MORNING

COMMUTE. SNOW EXPECTED TO DEVELOP BY MIDNIGHT IN THE CT VALLEY

THEN QUIKLY SPREAD EWD ACROSS REST OF SNE.

WE ISSUED WINTER WX ADVSY FOR ALL BUT S NH FOR GENERAL ACCUM 3-6".

HEAVIEST QPF EXPECTED SE NEW ENG BUT HIGHER SNOW TO LIQUID RATIOS

IN THE DISTANT INTERIOR WILL MAKE UP FOR LESS QPF. HOWEVER...THIS

STORM STILL HAS THE POTENTIAL FOR HIGHER SNOW AMOUNTS AND EVENTUAL

UPGRADE TO A WARNING FOR THE I95 CORRIDOR TO CAPE COD GIVEN 06Z

NAM TREND AND ALSO 03Z SREF WHICH ALSO INCREASED QPF AND SHOWED

DRAMATIC INCREASE IN PROBS FOR 4" NEAR THE S COAST AND EVEN A LOW

PROB FOR 8". A FURTHER NW TRACK WOULD ALSO INTRODUCE PTYPE ISSUES

OVER ACK AND OUTER CAPE WITH A BRIEF MIX OR CHANGE TO RAIN FRI

MORNING.

GIVEN THAT THE TREND BEFORE THIS WAS FOR DECREASING QPF AND

FURTHER OFFSHORE TRACK WE WERE NOT CONFIDENT ENOUGH TO GO WITH A

WARNING. WE WILL LET NEXT SHIFT VIEW 12Z GUIDANCE TO DETERMINE IF

THIS TREND IS FOR REAL.

THIS STORM WILL BE A QUICK HITTER WITH THE HEAVIEST SNOW EXITING

BY LATE FRI MORNING OR MIDDAY WITH CLEARING LIKELY LATE IN THE

DAY.

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Read and enjoy. No use bickering and complaining about what was discussed/debated in the past couple days. It's going to snow. Once again I have proven my worth with these juju threads. La Epic!

If this trend sticks they should raise warnings. I can't blame them for not doing it yet in light of everything going the wrong way pre 0z in American guidance. Subjectively the euro never wavered from advisory snows and the rgem has been on the cusp of warning snows although the 6z backed down some.

Agree with will on the snow bomb threat. Will feel better in an hour or two if the trend holds.

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again I hear the eastern drums,and yet again will the deformation band set up in connecticut? lets look at what might really happen. any potential screw zones like eastern CT/RI? or is this one going to be a different animal all together.If you ask me ill take it looking like its going for easten new england as long as i can get under any trough.

There isn't really a typical deformation band unless this winds up a lot more...only really place that might see one is extreme coastal MA like CC...perhaps up toward Boston and NE MA and SE NH and finally into downeast ME.

That doesn't mean there can't be a some little mesoscale bands to the west, but this does not have a true mature CCB like the Jan 12 blizzard did.

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St Louis got 9 inches with .51 qpf..ours will be even fluffier..US FTW

It's possible Kev. It was the 00z NAM, 00z GFS Ensm and 00z Euro/Ensm. that jumped to the west of guidance. The 06z NAM continued that along with the 06z GFS and Ensm. I said this yesterday. If 0.5" QPF becomes a reality than we may see higher totals. Hoping the 12z suite holds serve.

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Every piece of guidance was going se for days pete, don't pretend it didn't happen.

You have a way of selecting comments out of context. I said a bunch of times the witching hour for models started around 36-42 hours and that it'd be the 0z run last night where it'd begin to matter as the southern s/w cleared the rockies and the northern s/w crossed the border.

Lol Scott, don't get bent out of shape, I'm just messin'. I said the NW trend was inevitable and you said I was ignoring the clear SE trend. I wasn't. I was just counting on the windshield wiper effect that seems to be in effect this year. SE,SE,SE, NW,NW,NW.....HIT! Man,it's windy here on top of the mountain today. Tough to push. All these little buttons. Enjoy the snow!!!

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