Summary:  7.9” new snow in Waterbury (495’) as of 10:00 P.M. EST

 

Friday, December 19th, 2008:  10:00 P.M. update from Waterbury, VT

 

New Snow: 7.9 inches

Liquid Equivalent:  0.40 inches

Snow/Water Ratio: 19.8

Snow Density:  5.1%

Temperature:  9.0 F

Humidity:  59%

Dew Point:  -5.8 F

Barometer:  30.18 in. Hg

Wind:  Calm

Sky:  Moderate Snow

Storm snow total:  7.9 inches

Storm liquid equivalent total:  0.40 inches

Current snow at the stake:  15 inches

Season snowfall total:  56.2 inches

 

The snow started at ~1:45 P.M. this afternoon in Burlington, and as others have noted with this system, it quickly ramped up to significant intensity.  We were in the Burlington area most of the evening, and snow was beautiful fluffy stuff falling at roughly an inch per hour.  Burlington was only under a winter weather advisory for 3 to 6 inches earlier in the day, but they eventually surpassed the 6-inch mark and I noticed that the Burlington NWS upgraded the area to a winter storm warning.  The change was discussed in an update put out this evening:

 

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE BURLINGTON VT

652 PM EST FRI DEC 19 2008

 

.NEAR TERM /THROUGH SATURDAY/...

-- Changed Discussion --

AS OF 650 PM EST FRIDAY...HAVE UPDATED THE FORECAST TO UPGRADE

CHITTENDEN...LAMOILLE...AND CALEDONIA COUNTIES FROM WINTER WEATHER

ADVISORY TO A WINTER STORM WARNING. A NARROW BAND OF MODERATE TO

HEAVY SNOW DEVELOPED ACROSS NORTHERN NEW YORK AND NORTHERN VERMONT

EARLIER THIS EVENING ALONG AN AREA OF DEFORMATION ALOFT. SNOWFALL

TOTALS IN THE BURLINGTON AREA HAVE ALSO BEEN ENHANCED AS NORTH

WINDS ARE FUNNELED DOWN AND CONVERGE ALONG THE NARROWING CHAMPLAIN

VALLEY. THIS HAS RESULTED IN SNOWFALL AMOUNTS OF 3 TO 6 INCHES IN

JUST A COUPLE OF HOURS. SEE ALBPNSBTV FOR A FULL LISTING OF

SNOWFALL AMOUNTS SO FAR. BUFKIT SOUNDINGS ARE SATURATED TO NEARLY

25 KFT AND INDICATE FAVORABLE SNOW GROWTH EXISTS FROM THE SURFACE

UP TO 10-15 KFT. GIVEN THESE FACTORS...FEEL HEAVY SNOWFALL WILL

CONTINUE THROUGH THE NEXT FEW HOURS AND UPPED STORM TOTAL SNOWFALL

AMOUNTS TO AROUND 8 INCHES IN NORTHERN VERMONT...WITH LOCALLY

HIGHER AMOUNTS POSSIBLE. NO OTHER CHANGES ARE NEEDED AT THIS TIME.

ALL UPDATED PRODUCTS HAVE BEEN ISSUED.

 

When I saw that extra area of deformation snow on the radar, it seemed likely that Northern Vermont was going to get in on some bonus snowfall.  Moderate snow fell all the way on our drive back to Waterbury, and the roads were actually in decent shape.  Much of I-89 was clear pavement, with the biggest issue being visibility when the snowfall intensified or another car passed.  Off the interstate, the roads were generally packed snow, but the driving was fine.

 

Back at the house I found 7.9 inches of new snow on the snowboard, and the snow had stacked up fairly vertically as opposed to creating a trapezoidal shape the way many snowfalls do.  So as of now we are right near the top end of the 4 to 8-inch accumulations forecast in our winter storm warning, and we may pick up a bit more snow overnight.  I measured 0.40 inches of liquid from my core sample off the snowboard, and as there was a lull in the snowfall not long after my observations, I also brought in the snow/rain gauge.  It really looked like the gauge had overflowed, but the liquid it collected (0.36 inches) was only 10% below what I got off the snowboard, so it apparently didn’t miss too much of the precipitation.  The new snow is beautiful powder with a water content of ~5%, so it should ski beautifully assuming it wasn’t too hammered by wind in the higher elevations.

 

 

 

 

 

J.Spin



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