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February 5-6 Storm Threat II


Baroclinic Zone

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Looking similar to the other day in some respects.

Yeah I always hate forecasting these. You can get a nasty 30F mini ice storm above 800-1000 feet a lot of times in these that aren't well forecast. Other times its 32F and very marginal that turns to 33F light rain before ending.

NAM has vortmax too far N for much snow at the end...gets a bit strung out at the end. But still should be watched closely for a flashover at the end...if it tracks a little more consolidated just underneath us.

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BTV issuing Winter Storm watches for southern CWA per its AFD.

http://forecast.weather.gov/product.php?site=BTV&product=AFD&issuedby=BTV

AS OF 312 PM EST FRIDAY...COMPLEX WEATHER PATTERN THEN DEVELOPS BY

LATER SATURDAY INTO SATURDAY NIGHT AS DEVELOPING LOW PRESSURE

TRACKS FROM THE SRN OHIO VALLEY/MID ATLANTIC EAST-NORTHEAST ACROSS

SRN NY/SRN NEW ENGLAND. THIS WILL LIKELY SPREAD A LIGHT TO

MODERATE SNOWFALL ACROSS OUR CENTRAL/SRN COUNTIES DURING THIS

PERIOD...WITH HEAVIEST AMOUNTS ACROSS OUR FAR SRN VT COUNTIES

WHERE WINTER STORM WATCHES HAVE BEEN ISSUED. THERMAL PROFILES

FAIRLY MILD AND COULD EVEN SEE A BRIEF PERIOD OF SLEET ACROSS THE

FAR SOUTH DURING A FEW HOURS OVERNIGHT SATURDAY...BUT WITH

CONTINUED MODEL DISPARITY IN THERMAL PROFILES HAVE LEANED TOWARD

AN ALL SNOW EVENT AT THIS TIME. ADDITIONALLY... HAVE TRENDED

TOWARD A MODEL BLENDED QPF SOLN WHICH SEEMS THE BEST COURSE GIVEN

SUCH HIGH VARIABILITY AMONG OPERATIONAL/ENSEMBLE MEAN PROGS. THIS

WOULD OFFER MUCH LIGHTER PCPN AMOUNTS ACROSS OUR NORTHERN COUNTIES

WITH ONLY MINOR ACCUMULATIONS ACROSS THE ADIRONDACKS INTO THE

CHAMPLAIN VALLEY/FAR NORTHERN VT. MAX/MIN TEMPS A BLEND OF MOS AND

BIAS CORRECTED DATA HERE WHICH WOULD OFFER FAIRLY MILD READINGS

AREA WIDE.

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Berks could catch a little of the wrap around tomorrow night with an inch or two if the 18Z NAM has its way. We may actually get an inch or two of snow on the front end as well before a period of ZR. Could get nasty around here, especially in the hill towns because of ZR. Between some light snow on the front end and something on the backside, I'm going for a 2 to 4 inch scenario locally with 0.1" to as much as 0.25" of glazing. Tough call on many fronts though. Could wind up a tad warmer, could be a tad colder and snowier.

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Yeah I always hate forecasting these. You can get a nasty 30F mini ice storm above 800-1000 feet a lot of times in these that aren't well forecast. Other times its 32F and very marginal that turns to 33F light rain before ending.

NAM has vortmax too far N for much snow at the end...gets a bit strung out at the end. But still should be watched closely for a flashover at the end...if it tracks a little more consolidated just underneath us.

I seriously am wondering if this doesn't end up a decent zr storm for the hills..deep snowpack, low dews...this could be a sneaky icestorm..Maybe that's weenieish..but I could honestly envision that happening

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I seriously am wondering if this doesn't end up a decent zr storm for the hills..deep snowpack, low dews...this could be a sneaky icestorm..Maybe that's weenieish..but I could honestly envision that happening

I think there could def be some icing...esp the first half of the storm....if it wraps up enough then it could change to rain, but the front end could ice for awhile. Best chance is north though...however I wouldn't rule out your area yet either. Either way, your snow pack is going to be a huge glacier at the end of it...because it wont melt much unless it goes over 36-37F or so and the rain isn't heavy enough to run off much, so it will get absorbed....then it all refreezes.

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The icing concerns for parts of N MA into S VT/NH could start becoming a bit concerning...perhaps as much as 0.50'' of ice possible. While this storm is a low impact storm the results it helps produce could be of moderate to high impact.

yeah after looking at the 18z nam 850s, looks like they get into the Brattleboro,VT area, if not a little farther north...pretty crazy.

EDIT: 700mb temps get to 0c up to Springfield,VT. WOW!

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yeah after looking at the 18z nam 850s, looks like they get into the Brattleboro,VT area, if not a little farther north...pretty crazy.

Most of the concerns for some may have to really start translating to the ice threat, especially considering some of these areas are going to start off as snow and a wet snow.

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The icing concerns for parts of N MA into S VT/NH could start becoming a bit concerning...perhaps as much as 0.50'' of ice possible. While this storm is a low impact storm the results it helps produce could be of moderate to high impact.

I don't think there's a threat for that much. .25 to maybe .33 at most. We're looking at around .7" of QPF.

IMO this has always had a snow - sleet - rain look, with not much of a period of freezing rain. As it shifts north, the threat for zr increases as low level cold holds strong, but still doesn't look like an ice storm.

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I think there could def be some icing...esp the first half of the storm....if it wraps up enough then it could change to rain, but the front end could ice for awhile. Best chance is north though...however I wouldn't rule out your area yet either. Either way, your snow pack is going to be a huge glacier at the end of it...because it wont melt much unless it goes over 36-37F or so and the rain isn't heavy enough to run off much, so it will get absorbed....then it all refreezes.

I don't know if you saw my post from earlier today..but there was a storm similiar to this 5 or 6 winters ago and Drag came on in the morning and issued ice storm warnings from about the pike south. it had looked like snow and then warmed enough for ice..I think you guys may have had at least half snow. This reminds me of that. I just don't remember the date or exact yr. We had quite an icestorm in town above 800 feet. i was at my other house at 650 feet and had some ice but as bad as a few 100 feet higher.

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I don't think there's a threat for that much. .25 to maybe .33 at most. We're looking at around .7" of QPF.

IMO this has always had a snow - sleet - rain look, with not much of a period of freezing rain. As it shifts north, the threat for zr increases as low level cold holds strong, but still doesn't look like an ice storm.

That would certainly be good news then.

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