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December 27/28 Storm Threat


Baroclinic Zone

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Is that not 3 days in a row with us Jeff and Eric in a zone of 1.5 or more on at least 2 of the models? 12-18 with lolls higher seems quite doable....although these things don't always work out that way.

Yes to the bolded. We're still a couple days out too. 6z GFS looks like a big hit with the H7 low tracking "under" us. Even if we end up getting some taint it will be after a decent thump of snow. It's early for weenies to be throwing around high ends of 18-20" though. Only Kevin has experience with that.
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Yes, Mike, inland areas look to get crushed - hoping for a weenie 20" but that would likely be a tad north. Even the immediate coast gets a good thump before NCP. I don't think 9-14 for you is bullish at all ... seems quite reasonable and I suspect you'll verify on the high end.

Well, I'm feeling pretty decent with respect to temp profile. I think the limiting factor for out here will primarily be--use guessed it--QPF placement. :)

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Yes to the bolded. We're still a couple days out too. 6z GFS looks like a big hit with the H7 low tracking "under" us. Even if we end up getting some taint it will be after a decent thump of snow. It's early for weenies to be throwing around high ends of 18-20" though. Only Kevin has experience with that.

Yes but it is a multi day signal. and it is less than 2 days out now. And....I'm a weenie so I reserve the right to go high. Kevin would be at lollies to 30 by now and I'm capping that at 24. I do think there will be 24 somewhere in central NH into Western ME. east wind anomoly of 5sd?

Ratios are a factor. If we get deform snows that will be 15+ in the last part of the storm. I don't think this is a paste bomb up here.

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I'll take the old school ETA QPF please... lol. I do like how a bunch of SREF members have that heavy axis into this region, while a lot also keep it NW of here. The east wind shadowing off the Whites is messing with some of the N.VT QPF on some models. No doubt the NEK suffers in this set-up but strong east wind will help here on the east slope of the Spine.

f84.gif

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Have to admit, a little bummed out this morning, no snow last night and upton is calling for all rain here not even a snowflake to start.

At least I have a high wind watch in effect:)

sorry about no snow on the drive down the merritt there was plenty of snow on trees.. hopefully you get some tomorrow.. I think you will at least see a little bit before the changeover.. 4km rpm shows a few hours of snow and sleet for everyone before rain.. do you get NEWS12

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Perhaps this is a likely reason for no WSWatches South of the Pike.

AM NOT CONFIDENT WITH MODEL FCST 2M TEMPS NOR MAV/MET/ MOS GUIDANCE.

FOLLOWING CLOSELY WITH SFC DEWPOINTS...HAVE MODIFIED THE PRESENT

MOSGUIDE FCST LOWER ANTICIPATING AN EVAP COOLING SETUP WITH SFC

TEMPS COOLING TOWARDS THE WET BULB. AS WE HAVE SEEN BEFORE THIS COOL

SEASON...THERE IS A MORE NLY COMPONENT OF SFC WINDS EMANATING FROM

THE DEPARTING ARCTIC-ORIGIN SFC HIGH POORLY HANDLED BY EVEN NEAR-

TERM FCST GUIDANCE. CONSEQUENTIALLY COLD-AIR DAMMING PREVAILS

RESULTING IN A COASTAL FRONT SETUP. WHILE THIS STORM IS

SIGNIFICANTLY STRONGER THAN PRIOR EVENTS WITH A STRONGER ELY

ONSHORE COMPONENT...AM CONFIDENT TO BELIEVE THAT THE WARM-MOIST

TROWALING SIGNATURE IN A MAJORITY OF THE FCST GUIDANCE WILL

GRADUALLY SCOUR OUT THE LARGE COLD DOME INITIALLY DOWN TO A SFC

SHALLOW COLD LAYER FOR PORTIONS OF INTERIOR NEW ENGLAND LENDING TO

A FREEZING RAIN SETUP AWAY FROM SHORELINES AND THE COASTAL PLAIN.

http://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

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I don't think you should be surprised by the conservative numbers so far. If after the full 12z suite things look the same I expect most pros will unleash. But, erroring on the side of caution has been the right play most of the time for the last year. Look at today for instance.

Merry Xmas/Festivas/Happy Holidays

Strongly agree with this. If guidance is the same this afternoon, forecasts should get more aggressive. Still time for adjustments both ways. I'm still feeling conservative

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Well looks like I'm gonna get crushed with the QPF. Won't be all snow, but still I think locking in 6-12'' is reasonable.

Hesitant to lock in anything more than a few inches still. We've been burned by the model shift this season do far. In our favor: CAD has been strong over NH in earlier events

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Well looks like I'm gonna get crushed with the QPF. Won't be all snow, but still I think locking in 6-12'' is reasonable.

Yup. I'd go higher. You easterners clean up on the qpf, and me ethinks hat'll more than make up for any tainting.

Clearly, Scott, Jeff, and Eric are getting an awesome belated Christmas present!

24.9/23

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