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NNE slowly approaching winter


dendrite

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WOW...impressive rainfall totals for Washington county.

...WASHINGTON COUNTY...

BARING 8.20 1023 PM 12/13 SPOTTER WS004

MOOSEHORN N.W.R. 7.72 410 AM 12/14 COOP MWRM1

ROBBINSTON 6.66 414 AM 12/14 COOP ROBM1

WHITING 5.69 1032 PM 12/13 SPOTTER WS038

PRINCETON 5.14 412 AM 12/14 COOP PNNM1

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Well, that was quite the proverbial roller coaster: started with a couple of inches on the ground on Sunday morning from previous events and added another inch that morning with the initial surge of precip. The snow got wetter & wetter as the temp climbed and we still had mangled flakes, even as the glass rose to 35F or so. By noon though, it was up to 36-37 and the liquid precip began in earnest. By bedtime on Sunday night, the temp had jumped up 46, the rain fell, driven by a robust southerly and the snow lying was all but gone.

By 7am Monday morning, I had 1.58" in the bucket, the rain had let up some, the ground was bare, squishy & brown and we were still in the mid 40s. Later in the morning and toward noon, one more batch of precip came through, being more of a heavy drizzle than a true rain. By mid afternoon, the <32 came crashing in, changing the rain over to a heavy, sticky snow. By yesterday evening it was down to the low 20s with light but steady snow.

As of this morning, had another 0.69" in the bucket, 2.5" of fresh snow re-whitened the ground and even now, light snow is falling.

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Event totals: 5.4” Snow/1.82” L.E.

Tuesday 12/14/2010 6:00 A.M. update: The small flakes that we were picking up yesterday evening were replaced by much larger flakes this morning. I found 3.2 inches of snow on the board this morning for the 6:00 A.M. report, and the big flakes were coming down quite hard at that time. The 3.2 inches of snow contained 0.21 inches of liquid for a calculated density of 6.6% H2O, although that value represents an average of both the earlier smaller flakes and the more recent large ones. I’d say that the snow that was falling this morning was more likely in the 4% H2O range, and with the fluffy snow, there was already another 0.7 to 0.8 inches on the board when I left at 7:00 A.M., so as of that point we'd passed 6 inches for the event. Hopefully the right side up density/temperature gradient in the snow will allow some bonding to the old base as Powderfreak mentioned. Some details from the 6:00 A.M. observations are below, and north to south overnight totals from some of the Vermont ski areas follow:

New Snow: 3.2 inches

New Liquid: 0.21 inches

Snow/Water Ratio: 15.2

Snow Density: 6.6%

Temperature: 14.0 F

Sky: Heavy Snow/Snow (5-10 mm flakes)

Snow at the stake: 6.0 inches

Ski area/ 24 hr snow

Jay Peak: 4”

Burke: 3”

Smuggler’s Notch: 8”

Stowe: 5”

Bolton Valley: 5”

Sugarbush: 5”

Killington: 3”

Okemo: 4”

Bromley: 4”

Stratton: 5”

Mount Snow: 4”

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Storm total was 2.77", ending about 4 this morning; the cocorahs observer in Temple got over 4.5", less than 12 miles west of MBY. Kennebec is washing the west side parking lots here in AUG this morning, currently 5' over flood, but that's still just minor flooding. The Sandy topped out at just over 20,000 cfs in Mercer, right at the flood threshold. Fields along Route 2 were partly under water 7-8 AM as I drove past, with the river down about a foot by then.

Didn't see the forecast until about an hr ago, and was startled to find the foothills under a WWA for 3-5" today - startled because Farmington was 36 with no precip at 7:30. Radar shows almost nothing upstream, so my guess is 0.3-0.5" rather than 3-5, if we get anything at all.

06z gfs gives us another shot at 3-5" from tomorrow's retro. Last retro was forecast for 4-8" here, busted by 3.2-7.2", and I expect no better from this upcoming one. Maybe the Sun-Mon storm will move back west (now progged as a clean miss), but otherwise pre-Christmas snow looks like elsewhere.

CAR max yest was 57, at 11:59 PM. If they managed to eke up another degree after midnight, it would've tied their record for the month of Dec. Yesterday was +30 there, and they are now averaging +9 for the month. Temps were "only" +24 IMBY, but the low of 41 was my 2nd 40+ minimum in 13 Decembers there. Wasn't Dec supposed to be the best chance for good winter wx this season?

Edit: GYX update at 11 AM took out the accum snow for today, dropping the WWA.

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Nice 18Z GFS run for N/C New England! A general 1 to 2 feet of snow with a slow moving Nor'easter moving up the coast. Of course its the 18Z GFS 5-6 days out but sure nice weather porn!!

lol....We would be shoveling for days, Its nice to look at and makes for great weenie fodder, But we need to see the Euro start to make a move west here in the next few cycles or it is probably just going to be a fantasy......... :)

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17.7F with steady/slowly falling temps during the day and occasional flurries. I'm hoping for a little snow over the next 24-36hrs with the ULL. I'll be happy with 1". Sunday's event is intriguing despite the uncertainty.

I echo your sentiments. I expect 1" (give or take a half inch) with the ULL and am pleased with guidance today for the weekend potential. Wait and watch.

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GYX has me at 1-2" tonight and 1-3" tomorow, I'm thinking maybe 2"......... :lol:

I got the staff favorite "less than one inch" for tonight, but a nice 1-3" for tomorrow. It surprised me, figured they'd go fractionals throughout as it has been. A couple years ago in the good ol' snow days it seemed like every forecast would increase the amount, maybe it'll happen again this year.

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I got the staff favorite "less than one inch" for tonight, but a nice 1-3" for tomorrow. It surprised me, figured they'd go fractionals throughout as it has been. A couple years ago in the good ol' snow days it seemed like every forecast would increase the amount, maybe it'll happen again this year.

I love that one........lol

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Event totals: 6.5” Snow/1.89” L.E.

Tuesday 12/14/2010 6:00 P.M. update: I found 1.1 additional inches of snow on the snowboard this evening to add to the event total. The next round of snow from this upper level low pressure is expected to come into the area tomorrow and Thursday.

In their latest discussion, BTV mentions the potential for the coastal storm, but isn’t feeling that it’s going to have any effect on this area because it is too far east. They do point out that, regardless of any coastal storm influence, snow is expected for the next week. That sounds very good for the ski resorts as we approach the big holiday period:

THE MODELS ARE STILL STRUGGLING WITH HOW THEY EACH HANDLE THE VARIOUS DISTURBANCES RIDING ACROSS THE FAST MOVING SOUTHERN STREAM AND THEIR INTERACTIONS WITH OTHER DISTURBANCES ROTATING AROUND IN THE BROAD TROUGH. THIS IN TURN RESULTS MAKES IT IMPOSSIBLE TO TIME ANY SPECIFIC WEATHER SYSTEM THAT WILL IMPACT OUR SENSIBLE WEATHER. THE MOST SIGNIFICANT SYSTEM PROGGED TO DEVELOP DURING THE PERIOD WILL BE SOME SORT OF COASTAL STORM. WITH THE STRONG SOUTHERN STREAM FLOW, I FAVOR THE 12Z ECMWF AND ITS SCENARIO OF KEEPING THE LOW PRESSURE SOUTH & EAST OF THE 40N/70W BENCHMARK. THAT MEANS IT WILL REMAIN TOO FAR AWAY TO EVEN BE NOTICED ACROSS THE NORTH COUNTRY. HOWEVER, THAT DOESN`T MEAN WE WON`T BE SEEING ANY PRECIPITATION. IN FACT, IT STILL LOOKS LIKE EVERY DAY WILL FEATURE AT LEAST SOME LIGHT SNOWS SOMEWHERE ACROSS THE NORTH COUNTRY -- LIKELY MOSTLY FOCUSED ON THE HIGHER TERRAIN DUE TO FAVORABLE OROGRAPHICS. HOWEVER, SOME WIDESPREAD LIGHT SNOWFALL IS ALSO POSSIBLE AS UPPER LEVEL DISTURBANCES DROP IN ACROSS THE REGION. WE MAY ALSO SEE A SHOT OR TWO OF LAKE EFFECT FROM LAKE ONTARIO STREAM INTO NORTHERN NEW YORK AT SOME POINT. SUSPECT SOME OF THOSE WEST/NORTH FACING SLOPE LOCATIONS IN NORTHERN VERMONT AND NEW YORK WILL GET NICKLED AND DIMED TO DEATH EACH DAY WITH SNOW, SO THAT BY THE MIDDLE OF NEXT WEEK A DEEP POWDER SNOW PACK WILL BE IN PLACE.

Some details from the 6:00 P.M. observations are below:

New Snow: 1.1 inches

New Liquid: 0.07 inches

Snow/Water Ratio: 15.7

Snow Density: 6.4%

Temperature: 10.2 F

Sky: Clear, couple flurries

Snow at the stake: 6.0 inches

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Getting some banding along the ME/NH border now. I see no snow obs, but when looking at the home stations in the area there's some spikes in RH showing up indicating SN is falling.

Your assessment is true, I have 0.4" of new snow.

Looking at my updated point forecast for today ... Total daytime snow accumulation of less than one inch possible. As we thought. :)

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Event totals: 7.0” Snow/1.90” L.E.

Wednesday 12/15/2010 6:00 A.M. update: Light snow falling here, with 0.5 inches on the board overnight. The NWS point and click for this location suggests 3 to 5 inches through tomorrow for this portion of the event. Some details from the 6:00 A.M. observations are below:

New Snow: 0.5 inches

New Liquid: 0.01 inches

Snow/Water Ratio: 50.0

Snow Density: 2.0%

Temperature: 11.5 F

Sky: Light Snow (1-3 mm flakes)

Snow at the stake: 6.5 inches

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As it left the house in Glenburn on the way to work this morning we had light graupel or sleet falling at 18 degrees. As I got closer to Bangor the snow picked up in intensity and was closing in on moderate at times. Currenlty lightly snowing in Bangor. The flake size has increased in the last few minutes.

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My 1-3" overnight came to nada, same as yesterday's 3-5". When I looked carefully at the windshield this morning, I saw a few graupel, then another couple as I headed out. Met with light but ground-whitening graupel in Belgrade Village, then drove into this band as I entered AUG.

from GYX:

"A band of moderate to heavy snow located on a line from Bethel to

Winterport will lift slowly northeast between 8 and 10 am. As this

band moves through the area it will reduce visibilities to less

than half a mile and could produce a quick inch or two of snow.

This line will affect areas in and around Waterville... Skowhegan...

Belgrade... Farmington... Livermore Falls... and Rumford."

Had about 3/4" when I got here, probably up to 1" now that it's ended. The band is headed north and is currently over MBY, so I'm guessing there will be an inch or so OG when I get home.

Still water in the parking lots along the Kennebec - 2.4' over flood at 8 AM.

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My 1-3" overnight came to nada, same as yesterday's 3-5". When I looked carefully at the windshield this morning, I saw a few graupel, then another couple as I headed out. Met with light but ground-whitening graupel in Belgrade Village, then drove into this band as I entered AUG.

from GYX:

"A band of moderate to heavy snow located on a line from Bethel to

Winterport will lift slowly northeast between 8 and 10 am. As this

band moves through the area it will reduce visibilities to less

than half a mile and could produce a quick inch or two of snow.

This line will affect areas in and around Waterville... Skowhegan...

Belgrade... Farmington... Livermore Falls... and Rumford."

Had about 3/4" when I got here, probably up to 1" now that it's ended. The band is headed north and is currently over MBY, so I'm guessing there will be an inch or so OG when I get home.

Still water in the parking lots along the Kennebec - 2.4' over flood at 8 AM.

Snowing heavy in downtown oakland. Big flakes.

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Absolutely brutal conditions on the hill this morning... this is true arctic stuff right now. At the mountain our sensors are showing gusts to 60mph now at the top of the lifts and it has been increasing in a disturbing manner. All wind forecasts are already wrong on the low side and its still increasing.

You can see by the Mansfield summit station how quickly the winds ramped up and the last observation time shown online is 6:05am when it was already up to near 50mph gusts. Now as of 9am we are gusting 60mph on the upper mountain and to 40mph in the base area. Couple this with temps below zero and in the single digits above zero... wind chills are currently in the -20F to -40F range from bottom to top...and during stronger gusts up top we are probably approaching -50F.

Here's the 1 hour period from 5:05-6:05am... notice how quickly the wind increased between 5:30-6am. It wasn't even blowing in the base area when I got here and it has been increasing rapidly ever since.

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