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Jan 12-13th Storm Observation Thread


dryslot

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He's getting massive orographic lift from all directions.  The valley is far too narrow for that to make a difference.  He's acting on the terrain all around him.

 

Looking at the topo map... you see just behind him is a hillside that rises from 400ft to over 3,000ft (immediately to his NNW).  To his SSW is Camels Hump which is over 4,000ft.  The valley he is in is so narrow it doesn't act like a valley...any air moving through there is getting forced up in almost all directions.  NW flow snow blows up over the ridgeline and the hillside is steep enough it just blows down into his neighborhood.  Think 40kts NW wind and snow over the Spine, its ending up in his yard, lol.

 

attachicon.gifWaterbury.jpg

 

So right now looking at the VAD profile, its a blocked low level SE flow probably going right into that 3,000ft terrain in his backyard to the NW.  His flakes on his cam look twice the size they do here which is a sure sign of meso-scale lift allowing those flakes to grow.

 

attachicon.gifJan_12.gif

 

Yeah, the wind element definitely makes a a lot of sense. It's not so much the snow growth over your house, it's the snow growth over the area that the snow ending up over your house originates from.

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Wow interesting. I never knew he was in such an all encompassing terrain area. I mean I know he was in a pretty good Valley with mountains all around him, but I never realized how prone he was to orographic lift from the SE too. And yeah, you aren't getting downsloped in such a steep Valley, so that makes sense. Cool.

if you have ever driven up to BTV you have driven right by his house.  I've always found it interesting because you have a pretty complete living history of Vermont's transportation infrastructure all squeezed in to a very narrow area right next to each other.  Dirt road, train tracks, paved US RT 2 and I89 all go through that spot in the spine and just for good measure the Long Trail crosses all of them.  I know  :weenie:

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Wind advisories flying now..Let's tear down some trees after the snow!

 

CTZ002>004-MAZ002>024-026-RIZ001>008-130445-

/O.NEW.KBOX.WI.Y.0002.160113T0600Z-160113T2200Z/
HARTFORD CT-TOLLAND CT-WINDHAM CT-WESTERN FRANKLIN MA-
EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-CENTRAL MIDDLESEX MA-
WESTERN ESSEX MA-EASTERN ESSEX MA-WESTERN HAMPSHIRE MA-
WESTERN HAMPDEN MA-EASTERN HAMPSHIRE MA-EASTERN HAMPDEN MA-
SOUTHERN WORCESTER MA-WESTERN NORFOLK MA-SOUTHEAST MIDDLESEX MA-
SUFFOLK MA-EASTERN NORFOLK MA-NORTHERN BRISTOL MA-
WESTERN PLYMOUTH MA-EASTERN PLYMOUTH MA-SOUTHERN BRISTOL MA-
SOUTHERN PLYMOUTH MA-BARNSTABLE MA-DUKES MA-NANTUCKET MA-
NORTHERN MIDDLESEX MA-NORTHWEST PROVIDENCE RI-
SOUTHEAST PROVIDENCE RI-WESTERN KENT RI-EASTERN KENT RI-
BRISTOL RI-WASHINGTON RI-NEWPORT RI-BLOCK ISLAND RI-
INCLUDING THE CITIES OF...HARTFORD...WINDSOR LOCKS...UNION...
VERNON...PUTNAM...WILLIMANTIC...CHARLEMONT...GREENFIELD...
ORANGE...BARRE...FITCHBURG...FRAMINGHAM...LOWELL...LAWRENCE...
GLOUCESTER...CHESTERFIELD...BLANDFORD...AMHERST...NORTHAMPTON...
SPRINGFIELD...MILFORD...WORCESTER...FOXBORO...NORWOOD...
CAMBRIDGE...BOSTON...QUINCY...TAUNTON...BROCKTON...PLYMOUTH...
FALL RIVER...NEW BEDFORD...MATTAPOISETT...CHATHAM...FALMOUTH...
PROVINCETOWN...VINEYARD HAVEN...NANTUCKET...AYER...FOSTER...
SMITHFIELD...PROVIDENCE...WEST GREENWICH...WARWICK...BRISTOL...
NARRAGANSETT...WESTERLY...NEWPORT...BLOCK ISLAND
335 PM EST TUE JAN 12 2016

...WIND ADVISORY IN EFFECT FROM 1 AM TO 5 PM EST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM 1 AM TO 5 PM EST WEDNESDAY.

* LOCATION...MOST OF SOUTHERN NEW ENGLAND

* WINDS...WEST 15 TO 20 MPH WITH GUSTS UP TO 45 MPH.

* TIMING...FROM 1 AM THROUGH 5 PM WEDNESDAY.

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