Sunday, January 11th, 2009

 

Summary:  5.2” snow total in Waterbury (495’) as of 7:00 A.M. EST

 

Sunday, January 11th, 2009:  6:00 A.M. update from Waterbury, VT

 

New Snow: 4.7 inches

Liquid Equivalent:  0.29 inches

Snow/Water Ratio: 16.2

Snow Density:  6.2% H2O

Temperature:  11.7 F

Humidity:  52%

Dew Point:  -5.6 F

Barometer:  30.00 in. Hg

Wind:  Calm

Sky:  Moderate Snow

Storm snow total:  4.7 inches

Storm liquid equivalent total:  0.29 inches

Current snow at the stake:  19 inches

Season snowfall total:  103.4 inches

 

The Burlington NWS had our area under a winter weather advisory for 3 to 5 inches of snow with this event, but after seeing the radar last night somewhere in the 8:00 – 10:00 P.M. range, it showed a sharp cutoff of precipitation way down south.  Even southern Vermont hardly seemed to be getting into much snow.  I was wondering if we were going to get anything near what was forecast, but the snow certainly built in last night as I found a decent stack on the snowboard and 0.29 inches of liquid obtained from the core sample.  I did notice that our forecast has been bumped up slightly from the last time I looked and is now calling for 3 to 6 inches of snow, so perhaps that is a sign of how the storm is behaving.  We’ve already passed the 5 inch accumulation mark anyway, as I just checked the snowboard at 7:00 A.M. and found another half inch on there.  It appeared that the snowfall has been moderate over the past hour, running at ~0.5”/hr since I took my 6:00 A.M. observations.  The rate of snowfall has decreased a bit now however, into the range of what I’d call light snow.  A couple of images from this morning are included below:

 

 

 

J.Spin

 

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The snow had definitely slowed down at around 7:00 A.M., but I took a look outside at ~7:30 A.M. and it had intensified with some big (1-1.5 cm diameter) flakes coming down.  I took another measurement off the snowboard and it was at 1.0 inches of accumulation, so we picked up a half inch in the 7:00 A.M. – 7:30 A.M. timeframe.  It’s still snowing fairly heavily so I’ll do another check at 8:00 A.M., although I suspect we might pass the top end of our advisory accumulations pretty quickly with the size of the flakes and the rate at which they are coming down.

 

Time – total snowboard accumulation

6:00 A.M. – 0”

7:00 A.M. – 0.5”

7:30 A.M. – 1.0”

 

J.Spin

 

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Time – total snowboard accumulation

6:00 A.M. – 0”

7:00 A.M. – 0.5”

7:30 A.M. – 1.0”

8:00 A.M. – 1.6”

 

The snowfall appears to be running at a bit over an inch an hour at the moment here, 1.2”/hr for the 7:30 A.M. to 8:00 A.M. period.  The intensity seems to be holding for the time being so I’ll check again at 8:30 A.M.

 

J.Spin

 

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Time – total snowboard accumulation

6:00 A.M. – 0”

7:00 A.M. – 0.5”

7:30 A.M. – 1.0”

8:00 A.M. – 1.6”

8:30 A.M. – 2.2”

 

The snow ran at the same 1.2”/hr for the 8:00 A.M. to 8:30 A.M. period, but it looks like it’s slowing down a touch.  I’ll do another check at 9:00 A.M. if we haven’t left for the mountain by then.

 

J.Spin

 

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Summary:  7.1” snow total in Waterbury (495’) as of 11:00 A.M. EST

 

Time – total snowboard accumulation

6:00 A.M. – 0”

7:00 A.M. – 0.5”

7:30 A.M. – 1.0”

8:00 A.M. – 1.6”

8:30 A.M. – 2.2”

8:50 A.M. – 2.4”

 

I wasn’t able to get a 9:00 A.M. reading off the snowboard, but I got an 8:50 A.M. reading just before we hit the mountain and the snow accumulation was up to 2.4 inches.  I could see that the rate of snowfall had certainly slowed down, and the 8:30 A.M. to 8:50 A.M. interval suggests ~0.6”/hr.  The flake size had dropped a lot too by that point, down to just a couple mm in diameter.  Up where we were on the mountain (~2,100’ – 3,150’ elevation range) the snow had also stopped by probably 9:30 A.M., and the weather had cleared out to blue sky.  It was still generally sunny on the drive back to the house, but I looked east down the Winooski Valley and could see that there was still light snow falling in our area even with the sunshine.  It’s probably snow that’s still blowing in from the mountains and taking time to get down here.  I’ll do a full analysis of the snow at noontime.

 

J.Spin

 

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Summary:  7.3” snow total in Waterbury (495’) as of 12:30 P.M. EST

 

Sunday, January 11th, 2009:  12:00 P.M. update from Waterbury, VT

 

New Snow: 2.4 inches

Liquid Equivalent:  0.07 inches

Snow/Water Ratio: 34.3

Snow Density:  2.9% H2O

Temperature:  18.9 F

Humidity:  64%

Dew Point:  5.9 F

Barometer:  30.03 in. Hg

Wind:  Calm

Sky:  Light Snow/Partly Clear

Storm snow total:  7.1 inches

Storm liquid equivalent total:  0.36 inches

Current snow at the stake:  21 inches

Season snowfall total:  105.8 inches

 

There was a lot more blue sky when I first got back to the house around 10:45 A.M., but now (~12:30 P.M.) we’re fluctuating between bouts of partly and mostly cloudy and snowfall has moved back in.  It’s light at this point, but a couple more tenths of an inch of fluff have accumulated, so 7.3 inches of snow/0.36 inches of liquid is where we stand for now.  Up on the mountain this morning it was hard to estimate exactly how much new snow they got due to grooming and this snow falling on top of already light stuff, but I say there were areas of 7-9 new inches by the time we left around 10:30 A.M.

 

J.Spin