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Thursday Wintry Threat II


Baroclinic Zone

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I guess NWS Albany decided to go with winter storm warnings for my area. P&C has me with 6-10". Not sure I get quite that much unless I can pull off a faster changeover. I wasn't quite expecting them to go to warnings this soon given their normally conservative nature. I'm still expecting the best fireworks just to my north along the west side of the southern and central Greens. Woodford, VT at 2.4K is going to jackpot with this one with a solid 12"+ type event I think. Cold air already banking up against the west slope some, which will lead to a quicker changeover.

41/39 RA

That would be my bet too. The Webcam there (if they can get it reset) should be interesting come tomorrow. At least we can see the weather on the mesonet.

http://170.222.32.148/9/

http://mesowest.utah.edu/cgi-bin/droman/meso_base.cgi?stn=VTWOO

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Is .2 -.3 of qpf falling as snow?

Yeah it seems like 0.2" or so at least. Maybe 0.3 near hubbdave.

It's all going to come down to how and when the comma head can get together. Some of the models really went to town for about an hour over your area and into ne mass...even a little longer in ne mass. The fact that it is moving so quickly will limit things.

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winter storm warning for the berks now

URGENT - WINTER WEATHER MESSAGE

NATIONAL WEATHER SERVICE ALBANY NY

1209 PM EST WED DEC 7 2011

MAZ001-025-NYZ058-063-VTZ013-014-080100-

/O.UPG.KALY.WW.Y.0023.111207T2300Z-111208T1100Z/

/O.NEW.KALY.WS.W.0014.111207T2300Z-111208T1100Z/

NORTHERN BERKSHIRE-SOUTHERN BERKSHIRE-WESTERN GREENE-

WESTERN ULSTER-BENNINGTON-WESTERN WINDHAM-

INCLUDING THE CITIES OF...PITTSFIELD...NORTH ADAMS...

GREAT BARRINGTON...LEE...LENOX...HOUSATONIC...HUNTER...

TANNERSVILLE...WINDHAM...SUNDOWN...ELLENVILLE...WOODSTOCK...

WEST HURLEY...KERHONKSON...NAPANOCH...PHOENICIA...BENNINGTON...

JACKSONVILLE...NEWFANE

1209 PM EST WED DEC 7 2011

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 AM

EST THURSDAY...

THE NATIONAL WEATHER SERVICE IN ALBANY HAS ISSUED A WINTER STORM

WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 6 PM THIS

EVENING TO 6 AM EST THURSDAY. THE WINTER WEATHER ADVISORY IS NO

LONGER IN EFFECT.

* LOCATIONS...CENTRAL AND SOUTHEAST CATSKILLS...BERKSHIRES AND

SOUTHERN GREEN MOUNTAINS.

* HAZARD TYPES...HEAVY SNOW.

* ACCUMULATIONS...5 TO 10 INCHES OF SNOW ACROSS THE SOUTHERN

BERKSHIRES AND BENNINGTON COUNTY...6 TO 12 INCHES OF SNOW ACROSS

THE NORTHERN BERKSHIRES AND CENTRAL AND SOUTHEAST

CATSKILLS...AND 8 TO 16 INCHES OF SNOW ACROSS WESTERN WINDHAM

COUNTY.

* TIMING...RAIN CHANGING TO SNOW THIS EVENING AND CONTINUING

THROUGH TONIGHT.

* IMPACTS...SNOW COVERED ROADS.

* WINDS...BECOMING NORTHWEST THIS EVENING AT 5 TO 15 MPH WITH

GUSTS UP TO 25 MPH OVERNIGHT.

* TEMPERATURES...IN THE MID TO UPPER 30S THIS EVENING...DROPPING

INTO THE UPPER 20S BY THURSDAY MORNING.

* VISIBILITIES...GENERALLY ONE QUARTER TO ONE MILE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...

SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO

POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

Fookin' sweet!!!
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It is faster, But if you pull up the Northeast region and follow the track and thicknesses from 00z thurs to 12z and match it up with same timefarme on the 0z and 12z you can see a difference in where the low tracks up here anyways once it gets to SE Mass..

Yeah I compared the two earlier which is why I referenced that it seems to be a tick cooler, but what I was referring to, was how quick the dry punch was able to come in here. It's a race.

IMO, it almost seems a little too quick given the QPF amounts.

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Yeah I compared the two earlier which is why I referenced that it seems to be a tick cooler, but what I was referring to, was how quick the dry punch was able to come in here. It's a race.

IMO, it almost seems a little too quick given the QPF amounts.

I agree with you, It seems to drop quite a bit of qpf for a storm to be moving that fast, Kind of a flag, You would not think you could get those totals with that forward speed, These shifts SE will play a big role for some areas that had the 544 dm line over there head and now have the 540 dm line over them with some of these SE shifts

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It seems like it has the last couple years anyways

Yeah, although looking at the meso-analysis the current pressures and pressure changes seem closest to the GFS. NAM looks to be a bit too far south for where things are right now. I haven't compared the ECM yet. RUC has been rock steady today but again its the RUC after 12 hours out.

UKMET is really amped more like the GFS and RUC. Maybe the EURO farted or it'll be onto something.

f18.gif

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I agree with you, It seems to drop quite a bit of qpf for a storm to be moving that fast, Kind of a flag, You would not think you could get those totals with that forward speed, These shifts SE will play a big role for some areas that had the 544 dm line over there head and now have the 540 dm line over them with some of these SE shifts

Oh, I mean that what I'm seeing kind of makes me scratch my head. I believe the speed of the system, but the output that I saw seemed weird...not the QPF.

Anyways, hopefully this thing really wraps up south of SNE. I like the euro depiction, because it keeps the DS more to the southeast.

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They always trend way nw..We know that. But the last 12-24 hours they always seem to come back east 50 miles or so..sometimes more.

I'd bet Ray's ballz on your wallz that the 18z NAM comes east by a decent amt.

What is a "decent amount"? Haha.

I think there's only so far east it can go at this point now (just like some where saying theres only so far west it can go). RUC has been drilling the same track all day long right along the UKMET/GFS tracks, so it would be very interesting to see if this goes east and why it does.

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Oh, I mean that what I'm seeing kind of makes me scratch my head. I believe the speed of the system, but the output that I saw seemed weird...not the QPF.

Anyways, hopefully this thing really wraps up south of SNE. I like the euro depiction, because it keeps the DS more to the southeast.

Where was it showing a dry layer? Was it at 700 or lower? Or was it where the dryslot was in relation to the track?

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GYX's noon update.............

.NEAR TERM /UNTIL 6 PM THIS EVENING/...

1201 PM...MINOR ADJUSTMENTS TO 1ST PERIOD GRIDS. STILL DIGESTING

AVAILABLE 12Z GUIDANCE. SOME CONCERN WE COULD HAVE A BAND OF SNOW

APPROACHING WARNING CRITERIA ACROSS PARTS OF THE MOUNTAINS AND

FOOTHILLS. CLOSER TO THE COAST...LOCALLY HEAVY RAINFALL COULD PUSH SOME

OF THE SMALL RIVERS AND STREAMS OVER SOUTHEAST NEW HAMPSHIRE AND

EXTREME SOUTHWEST MAINE TO NEAR BANKFULL ON THURSDAY.

935 AM...I ADJUSTED 1ST PERIOD POPS UP TO LIKELY ACROSS THE SOUTHERN

TWO THIRDS OF THE FORECAST AREA AS PRECIPITATION EXPANDS IN COVERAGE

WITH APPROACHING IMPULSE. SOME ADJUSTMENTS TO TIMING OF CHANGEOVER

FROM RAIN TO SNOW AS WELL FOR TONIGHT. I HAVE SOME CONCERNS FOR

SULLIVAN AND WESTERN MERRIMACK COUNTIES WHERE I SPED UP THE

CHANGEOVER TO SNOW WITH THE UPDATE. IF PRESENT TRENDS HOLD WITH

THE NEW 12Z MODELS...I WILL LIKELY EXPAND THE WINTER WEATHER ADVISORY

TO INCLUDE THAT AREA WITH THE NEW AFTERNOON PACKAGE. HEIGHTS CRASH

LATER TONIGHT AND WE COULD SEE A CHANGEOVER TO SNOW EVEN ALONG THE

COAST TOWARDS DAWN BEFORE THE PRECIPITATION ENDS. ON THE

WATERS...I WILL UPDATE THE MWW TO MENTION POTENTIAL FOR A FEW

GUSTS TO NEAR STORM FORCE OVER THE OPEN WATERS ON THURSDAY. HAV A

GUD DAY.

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Nah..if you compare the 2 it was slightly east..not enough to matter at 12z ..but it might be at 18z

You're reaching...lol.

I hope it goes east too, but I think the general track near the Cape is set. Hopefully it comes together real quick, because imo that is more important than the actual track. It's going to be the big lift that helps cool the column along with CAA.

This will be a great hit for the NW slopes of the Berks and west slopes of VT.

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