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Feb 11/12 Storm Disco II


Baroclinic Zone

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BASED ON A CONSENSUS OF WHERE THE

850-700MB FRONTOGENESIS AXIS WILL BE...AND A LACK OF STRONG OMEGA IN

THE SNOW GROWTH ZONE...BANDING/ENHANCED SNOWFALL RATES ARE NOT

ANTICIPATED. ANY BANDING POTENTIAL LOOKS LIKE IT WOULD BE JUST

OFFSHORE. HAVE GONE A FEW DEGREES BELOW GUIDANCE FOR TEMPERATURES

TONIGHT THROUGH SATURDAY.

LIQUID EQUIVALENT PRECIP IS FORECAST TO RANGE FROM AROUND 0.15 TO

0.50 INCHES...HIGHEST TO THE EAST. WITH EVERYTHING ELSE

CONSIDERED...LOOKING AT MOSTLY 1 OR 2 INCHES FOR THE CWA. WILL GO

WITH AN ADVISORY FOR PART OF SE CT AND FOR EASTERN SUFFOLK COUNTY

WHERE 2 TO 4 INCHES OF SNOW IS FORECAST.

Hmmm, not a bullish forecast from Box. I'm guessing we could end up with just a heavy coating this far NW of the coast.

Would have really liked some snow for the ski areas.

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Since looking at 12z EURO yesterday, I have been in their camp, the HPC joined following the 0z Runs of today and has been there all day.

We may still see some settling in the 0z run because the convection will have fired by 0z/already has. So the models should be able to get a handle on these actual small lows being there. There's another riding over Disney heading east that kind of becomes one of the "lows" well east tonight. That's the one the RGEM develops chiefly, hosing us.

Winds have gone north in myrtle beach, we have a closed low approaching the obx.

It's very vague. We aren't going to see much for many hours I don't think...just some hints of where the low is/will form.

One of the things that's concerning is almost all the moisture is offshore. In time the flow comes around enough that it comes north but I remember Don Kent back in the late 70s with a similar situation where most of us were progged for 3-6/4-8 talking about it turning up the coast....next coast it hit was Labrador.

Everything seems to be mostly on course with the Euro but we've not got a lot of room to spare.

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We may still see some settling in the 0z run because the convection will have fired by 0z/already has. So the models should be able to get a handle on these actual small lows being there. There's another riding over Disney heading east that kind of becomes one of the "lows" well east tonight. That's the one the RGEM develops chiefly, hosing us.

It's very vague. We aren't going to see much for many hours I don't think...just some hints of where the low is/will form.

One of the things that's concerning is almost all the moisture is offshore. In time the flow comes around enough that it comes north but I remember Don Kent back in the late 70s with a similar situation where most of us were progged for 3-6/4-8 talking about it turning up the coast....next coast it hit was Labrador.

Everything seems to be mostly on course with the Euro but we've not got a lot of room to spare.

Oh, agree was just noting that winds had veered north, seems like guidance washes this out for a time, focuses se, then consolidates once again ne, but well south and east to be relevant. Too many cooks in the kitchen, but even small changes can make big differences, the baroclinic ribbon is robust and of course well above sst's. Will be a fun night, not much sleep but this is what we love to do.

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Only buoy I could find with an easterly component near the area is off SC.

Station 41013

NDBC

Location: 33.436N 77.743W

Date: Fri, 10 Feb 2012 22:50:00 UTC

Winds: SSE (160°) at 17.5 kt gusting to 21.4 kt

Significant Wave Height: 4.9 ft

Dominant Wave Period: 5 sec

Mean Wave Direction: S (176°)

Atmospheric Pressure: 29.98 in and falling

Air Temperature: 63.7 F

Dew Point: 57.2 F

Water Temperature: 66.9 F

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Only buoy I could find with an easterly component near the area is off SC.

Station 41013

NDBC

Location: 33.436N 77.743W

Date: Fri, 10 Feb 2012 22:50:00 UTC

Winds: SSE (160°) at 17.5 kt gusting to 21.4 kt

Significant Wave Height: 4.9 ft

Dominant Wave Period: 5 sec

Mean Wave Direction: S (176°)

Atmospheric Pressure: 29.98 in and falling

Air Temperature: 63.7 F

Dew Point: 57.2 F

Water Temperature: 66.9 F

fits in perfectly with the meso low that formed ne of mt pleasant

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Oh, agree was just noting that winds had veered north, seems like guidance washes this out for a time, focuses se, then consolidates once again ne, but well south and east to be relevant. Too many cooks in the kitchen, but even small changes can make big differences, the baroclinic ribbon is robust and of course well above sst's. Will be a fun night, not much sleep but this is what we love to do.

lol you are pulling an all nighter for a coating on the grass?

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Usually it's suppressed and OTS is the point I was trying to make.

LOL... dude its not going to be way OTS when the event is 12 hours away lol.

Maybe like 3-4 days out yea.. but not 12 hours out.

Final Call:

MHT: Trace (Hopefully Nothing)

ORH: 1.2

KTOL: 1.4

BOS: 1.5

TAUT: 3.5

Jackpot: Fall River: 6.5 Inches

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lol you are pulling an all nighter for a coating on the grass?

I have no idea if it even snows, I love how it all comes together, the meteorology, obs up and down the coast, how much waa precip occurs...........its a passion, I expect nothing, and even if I get nothing its how this evolves thats so amazing, model tracking is le miz............this is exceptional, nowcasting is incredible. Missing the evolution of this event would be a shame no matter what happens in my backyard.

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Oh, agree was just noting that winds had veered north, seems like guidance washes this out for a time, focuses se, then consolidates once again ne, but well south and east to be relevant. Too many cooks in the kitchen, but even small changes can make big differences, the baroclinic ribbon is robust and of course well above sst's. Will be a fun night, not much sleep but this is what we love to do.

It's kind of a long boring night, at least until midnightish. There's no "tell" here for hours...just kind of in limbo. If we were already seeing a major convective flareup off Florida we may have had an indication bad things were happening, not the case, about exactly what the 12h 12z euro forecast to the T there.

The southern s/w appears to be running a bit north of even the 18z guidance. RUC seems to be adjusting that way too, stronger, maybe a smidge slower. I'd think that'd be a good thing. RUC surface progs are likely to be mostly useless outside of a few hours. At 500 it's been pretty good and matched the Euro pretty well for most of the day. It's just in the last few hours as things have really started to spin up that it seems to want to lag the earlier models...and water vapor seems to confirm.

There's just absolutely nothing out there yet to refute the 12z Euro in principle...so...we wait and watch.

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I have no idea if it even snows, I love how it all comes together, the meteorology, obs up and down the coast, how much waa precip occurs...........its a passion, I expect nothing, and even if I get nothing its how this evolves thats so amazing, model tracking is le miz............this is exceptional, nowcasting is incredible. Missing the evolution of this event would be a shame no matter what happens in my backyard.

ditto from afar. this is a perfect storm to nowcast because what seems like a stochastic process of which low takes over has been a challenge for models. buoys, wind directions, upstream obs... bad time to have spotty internet.

sometimes I think the chase is almost as good as the destination...

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Interesting dewpoint swings along the coast. At first I thought it was just me but I noticed the coastal airport reports - especially east of New Have were also showing some big hourly swings. Until the last few hours anyway... since then the dewpoints have been steadily climbing along with the temp. I am currently sitting at 44.1 with a dewpoint of 38 and a brisk SSW wind.

Time to start re-considering those predicted snowfall amounts down this way...??? ;)

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