Vermont’s first snows of December

We picked up our first December snow yesterday, just 0.4 inches here at the house, but Mt. Mansfield picked up a couple of inches and the slopes are looking much nicer with the fresh coat of white.  Powderfreak put up some great pictures of the new snow from both yesterday and today over in the New England Regional Forum at American Weather.  I’ve added some of my observations from yesterday below:

“I’m not sure of the temperature, but it was raining lightly when I left Burlington around 5:00 P.M.  At the Waterbury Park and Ride, the precipitation looked like a mixture of rain and snow, and the only accumulations I saw were a fairly thin coating of slush on the cars.  True to form though, once I hit the Cider House a couple miles west toward the spine, I started seeing accumulations of snow on the grass, and at the house I found 0.3” of slushy snow on the snowboard and a temperature of 33.3 F.  The snow picked up for a bit after the 6:00 P.M. board clearing, and we received another tenth of an inch of snow, but the snowfall has tapered off since then and it’s very light now.  It is nice to have the first accumulation of December in the books though, hopefully there will be plenty more to come.” Some details from the 6:00 P.M. observations are below:

New Snow: 0.3 inches
New Liquid: 0.06 inches
Snow/Water Ratio: 5.0
Snow Density: 20.0% H2O
Temperature: 33.3 F
Sky: Light Snow (1-2 mm flakes)
Snow at the stake: Trace

For the full details on this storm, head to the detailed report at the winter weather section of our website.

First major winter storm of the season for Northern Vermont

An image of the Winter Weather Advisories and Warnings map from the National Weather Service in Burlington for November 22, 2011
Winter Weather Advisories are up throughout the state of Vermont for the upcoming storm

While the Northeast has already had a couple of big, snow-producing synoptic storms so far this season (one on October 27th, and another on October 29th), for Northern Vermont these events were fairly minor because the area was really on the fringe of the precipitation. A storm is developing now however, which is expected to bring more substantial accumulations to the northern part of the state. This storm is expected to head into the Ohio Valley later today, and then track east across Southern New England overnight. This storm may have some mixed precipitation with it, but the current forecasts do not indicate much mixing in the northern areas, and the chance is there for greater than 6 inches of snowfall. Many local residents are already predicting damage to their homes and are already seeking services from the likes of https://seiroofing.com/roofing-services/. Snow can easily damage the roof of a home, especially if there is a lot of it. It’s a good idea to get roofs regularly maintained to make sure they are strong enough to cope with this snowfall. Perhaps some homeowners might want to consider contacting those at JAE Construction for help with their roof maintenance. It’s always better to prevent roofing damage where possible, regular maintenance can help with this. Damage from the storm could include water damage that homeowners may need to address with restoration services. Water damage can put stress on a home’s water pipe network and cause leaks. With this being the case, services that can clean up sewage leak incidents may well be in high demand following severe floods so it may be worth looking up such services local to you in advance. For a few more details, part of my morning report to the New England Regional Forum at American Weather is added below:

It was 17.6F and dropping when I left the house this morning around 6:00 AM, so this will certainly come in as the coldest morning of the season at our location thus far. I flipped on The Weather Channel before I left the house, and was surprised to see that the local forecast called for 6 to 10 inches at the Winter Weather Advisory level, but after reading the BTV forecast discussion, they spoke of the potential for mixing keeping totals down. The current point and click for our area down in the valley calls for 4 to 9 inches of snow, but doesn’t mention any mixing at this point.

Graphical point forecast for our location in Waterbury from the National Weather Service in Burlington for November 22, 2011
Snow is expected from tonight through Wednesday night, even for our location down in the Winooski Valley.

Today: Sunny, with a high near 34. Calm wind.

Tonight: Snow, mainly after 1am. Low around 24. South wind at 6 mph becoming north. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Wednesday: Snow, mainly before 4pm. High near 35. North wind between 3 and 8 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

Wednesday Night: A chance of snow showers, mainly before 7pm. Partly cloudy, with a low around 20. North wind around 6 mph becoming calm. Chance of precipitation is 30%.

I didn’t really see much of a bump in the point forecasts for the local mountains, so we’ll have to see if that gets refined for the higher elevations. I’ve added the projected snow accumulations map from National Weather Service Office in Burlington below:

An image of the projected snowfall accumulations for the upcoming November snowstorm in Vermont
The National Weather Service projected snowfall accumulations map for the northern portions of Vermont and New York as of the early morning on November 22, 2011

Tuesday, November 22nd, 2011 – Afternoon Update

The National Weather Service Office in Burlington has put out their afternoon update for snow accumulations, and our area has been upgraded to a Winter Storm Warningto reflect the potential snowfall. The latest advisory and projected accumulations maps have been added below:

An image of the afternoon updagte for the Winter Weather Advisories and Warnings map from the National Weather Service in Burlington for November 22, 2011
Winter Weather Advisories have now been upgraded to Winter Storm Warnings in some parts of Vermont and Northern New York to reflect the anticipated snow accumulations.
An afternoon update the projected snowfall accumulations for the upcoming November snowstorm in Vermont
The afternoon update for expected snowfall from the National Weather Service in Burlington

Tuesday, November 22nd, 2011 – Evening Update

This evening, Matt Noyes posted his latest snowfall prediction map for this storm, and he’s pretty bullish on some of the totals in Northern New England, including parts of Northern Vermont. I’ve added his map below:

Matt Noyes' snowfall map for Northern New England snowstorm on November 22, 2011
Matt Noyes’ snowfall map for Northern New England with the upcoming storm

For more full details on this storm, head to the detailed report at the winter weather section of our website.

Pico, VT 30OCT2011

An image of Erica skiing powder on the Birch Glades Trail at Pico Vermont - October 30, 2011
E enjoys some of the October powder at Pico after back to back storms set up some great ski conditions.

On Thursday, Vermont got hit with its first major storm of the 2011-2012 winter season.  The greatest effects were felt in the central and southern parts of the state, where areas like Killington picked up about a foot of snow.  Then yesterday, an early season Nor’easter came through the Northeast, and it turned out be historic for the Mid Atlantic and Southern New England, where some areas picked up more than 30 inches of snow.  That’s a good dump of snow for any time during the winter, but it’s incredible for October, and numerous October snowfall records were shattered.  Through the combination of the two storms, some areas in the Berkshires of Massachusetts had already picked up over three feet of snow for October. Up in Vermont, the Nor’easter was focused on the central and southern parts of the state, just like the previous storm.  We did actually pick up 1.2 inches of snow at our house in Waterbury last night, but with areas south of us getting another good dump of snow on top of the base they already had from the previous storm, our eyes were definitely drawn southward for some potentially great October skiing.

Since Killington had already opened for lift-served skiing, we decided that Pico would be a much mellower option for earned turns, with similarly great snow.  Despite many days of skiing at Killington in the past, nobody in the family had actually ever skied Pico, but it’s hard not to admire the way 3,967’ Pico Peak towers well above Sherburne Pass on Route 4.  Since the base area of Pico sits at an elevation of ~2,000’, it’s got plenty of elevation to help keep the snow dry if lower elevation temperatures are above freezing.

E hosted a Halloween pumpkin-carving party last night, but I still had plenty of time after clean up to prep some of the gear and put the skins on the skis so that we’d be able to save time this morning.  After a hearty breakfast to ensure that the boys were charged up for the mountain ascent, they got dressed very quickly and headed out to play in the snow while we got everything together for the trip.  I recorded the final couple of tenths of an inch of snow that had accumulated on our snowboard from the morning’s light snow, and we were on our way southward.  To read the details about the skiing and see all the pictures, head to the full report from Pico on October 30th, 2011.

An image of Sherburne Pass from Pico ski area in Vermont with October snow
Looking down from the trials of Pico at the base area and Sherburne Pass, October almost seemed like mid winter.

 

Second major October snowstorm of the season for Vermont

The map from the National Weather Service for Vermont Winter Storm Warnings and Advisories for October 29, 2011
Winter Storm Warnings and Winter Weather Advisories are up in Vermont for our second October snowstorm in three days.

Our second significant snowstorm for October, and in fact our second significant snowstorm of the past three days, is on our doorstep.  As with the storm from Thursday, Vermont snowfall will again focused on the southern part of the state, and this is likely to be a record snowfall event for areas of Southern New England, and the Mid Atlantic Region.  Although this storm is still focused to our south, it is large enough that even our area is under its first Winter Weather Advisory of the season.  The winter weather advisory maps from the National Weather Service Office in Burlington have been added here, and more updates about this historic early-season winter storm can be found at their website.

A map of the expected snowfall totals from the National Weather Service in Vermont

For the full details on this storm, head to the detailed report at the winter weather section of our website.

2010-2011 Ski Season Summary

Having now compiled all our ski trip and winter storm summary reports for the ’10-’11 ski season, I’ve put together this season summary as a view of how things transpired from a Northern Vermont local perspective.  It’s interesting to note that for Burlington, winter ’10-‘11 was well above average for snowfall (128.4”, 175%), while out in the mountains at our house the deviation was much less (197”, 114%), and indeed in the higher elevations of the Northern Greens like Bolton it was even closer to average (330”, 106%), so ski resort snowfall around here was essentially average.  I actually made a chart for a post at Americanwx.com concerning the ’07-’08 season, which used Bolton’s snowfall from the past several seasons as a general indicator of how the snowfall has been in Northern Vermont:

A table showing the snowfall at Bolton Valley Ski Resort in Vermont from the 2006-2007 through to the 2010-2011 season

One can see from the chart that ’10-‘11 was basically average for snowfall, and that the amount of snow (330”) was identical to ’07-’08.  I would add that the general impression was that consistency of winter temperatures was a bit better than average in ’10-‘11 due to fewer warm events, so the quality of snow surfaces was higher.  I’m not sure how much better than average it was though, since it seems that during midwinter, the norm in the higher elevations of the Northern Greens is to have about one warm episode per month.  Also, since we were essentially out of the main track of synoptic storms until February, there wasn’t much in the way of moderate-density snowfall to resurface the slopes.  I try to address the consistency of temperatures/quality of the snow surfaces in the text below though, at least in the context of weekends; I should note that it’s possible there could have been some midweek weather issues that simply flew under the radar for me.  For the quality assessment I simply focused on whether or not we were skiing powder, because unless there is some sort of notable rise in temperatures, there is always powder available.

A monthly breakdown of snowfall and my perspective on the season follows below – you can click on each month (except November) and it should bring up that month’s posts in the J&E Productions Web Log.  I only have the monthly snowfall for my house and not the ski areas, but the percentages relative to average often parallel the mountains reasonably well, especially for Bolton which is right up above us:

October:  Pretty typical in that we got at least some snow for skiing; we had 1.0” of snow at the house.  October snowfall in the lower valleys is often minimal enough that the percentages aren’t all that relevant, but that number is 111% vs. the five year average since we’ve been at our house, so indeed that’s rather “normal”.

November:  Very poor; we got just 2.4” of snow at the house (29% of average) and I don’t really remember it, nor do I have any entries for that month in my ski log, so that says plenty right there.  I do have a vague recollection of storm after storm tracking to our north and west giving us mostly rain though, so that would explain the low snowfall total.  The lack of snowfall wasn’t necessarily a huge concern at the time since it was “only November”, but without good November snowfall, getting to appropriate base depths and excellent skiing in December can be that much harder.

December:  Quite normal, 46.0” of snow at the house (right about average at 102%).  Fortunately, even with minimal November snow we were skiing natural snow terrain by December 10th up at Bolton; the holiday period featured some decent skiing, with 7 outings for me during that stretch, indicating that the snow was obviously OK.  Bolton had picked up 4 feet of snow from the storm at the beginning of the month, however, a lot of that snow, as well as what fell later in the month, was upslope fluff.  So, even if one assumes a fairly average amount of snowfall for the mountains like we saw in the valley, the very dry nature of the snow meant that there was less liquid than usual, resulting in base depths that really didn’t build quickly.  The Boxing Day Storm was unfortunately the start of a pattern that would last the next five to six weeks, with the big synoptic storms staying well south of the region and pounding Southern New England, while northern areas remained on the fringe and essentially survived on fluff.  Temperature consistency/snow surface quality:  Skiing was done on all 4 weekends of the month, and out of the 12 outings in my records, the only outing without powder skiing was Friday, Dec 31st, so that suggests pretty consistent temperatures.

January:  We got 55.5” of snow at the house, which is above average (137%) in what can sometimes be a dry, midwinter month.  However, January was essentially a month-long continuation of the trend that started on Boxing Day, and we were living on mostly Northern Vermont Champlain Powder™ fluff.  We had a couple of good upslope storms in the early to mid part of the month (January 7th and January 12th) that made for some fine skiing, but obviously since so much of it was pixie dust, the base depths just could not build the way that they would with some synoptic storms.  Temperature consistency/snow surface quality:  Skiing was done on all 5 weekends of the month, and out of 11 outings in my records, the only outing without powder skiing was Saturday, Jan 1st due to the warmth at the end of December.  So I think one could argue that weekend ski surface consistency through Dec/Jan was better than average with only one (instead of two) weekend-affecting warm up(s) for the two months.

February:  This is when the storm track finally shifted north and we got some notable synoptic storms; the first one was right on the 1st, and then we had a second storm on the 5th.  That first storm brought just over a foot of snow for us down in the valley, and was by far the largest for the month.  Thus there weren’t really any mega dumps based on my records from the house, but there was plenty of the usual good skiing at Bolton and even good skiing at Stowe.  Snowfall was 48.1”, which is roughly average at 108%.  Temperature consistency/snow surface quality:  Out of the 10 outings in my records, all 10 of them had powder skiing, so February was perfect in that regard.  However, while skiing was done on all 4 weekends of the month, we had to wait until Monday of the long weekend to ski because there had been some sort of warm-up.  So I’d say the month was pretty typical with at least that one warm-up.

March:  We continued to stay in the storm track for most of March, with our biggest valley snowfall of the season (25.0”) coming from the March 5th storm.  We did wind up with notably above average snowfall in the valley for the month (39.6”; 155%), essentially due to that one big storm and aided by the fact that what I’ve got for a March average could be a bit low due to very poor Marches in ’09 (12.6”) and ’10 (2.1”).  Temperature consistency/snow surface quality:  Skiing was done on all 4 weekends of the month, and powder skiing was done on all those weekends, however, there was also notable infiltration of non-powder skiing days into the weekends.  Relative to the previous three months, only 9 of our 12 outings for March featured powder skiing, so while still a pretty good ratio, it was certainly a decrease.  Indeed there were multiple warm ups in the month because those three non-powder days were actually on three different weekends (the 1st, 3rd, and 4th weekends).  Fortunately, those weekends were somewhat redeemed by powder on the other day.  By March, especially toward the end, things may start to fall off a bit from the typical rate of one warm episode per month, but I would expect that with at least 3 individual warm ups in March, it was nothing great or even above average in terms of consistency.

April:  This was again quite a poor month in terms of snowfall and powder skiing; although snowfall correlation between our location down at the house and the mountains can really start to wane as one moves through April and snowfall becomes more and more elevation dependent.  Snowfall at the house was well below average for the month (4.4”; 61%).  We did at least start out the month with a snowstorm on the 1st and another one on the 4th; these events produced some good weekend powder skiing at Bolton and helped the mountain snowpack to surpass 100 inches at the Mt. Mansfield Stake.  However, the snowfall really fell off after that.  Temperature consistency/snow surface quality:  Skiing was done on all 5 weekends of the month, but only 3 out of 9 days had powder and only 2 of the weekends had powder skiing.  People were excited because we had a relatively deep snowpack during the month and coverage stayed longer than normal, but after that first week the storm track had shifted to the north/west and it was just storm after storm that featured warmth and little to no snow, even for the mountains.  I commented on that trend in a post at Americanwx.com, since there can easily be feet of snow in the higher elevations in April, and instead of just some corn days or spring crud, we could have been skiing some great powder.

May:  The May skiing was good due to the healthy snowpack, and I did get out in the powder on the 6th for top to bottom skiing on Mansfield.  We didn’t get any snowfall at the house during the month, but May’s average snowfall numbers down at our elevation are pretty minimal like October, and with the high sun angle and warming as we approach the solstice I suspect even more removed from correlation with what the mountains see.  Temperature consistency/snow surface quality:  I wouldn’t say May powder is consistent enough to worry about.  I only got out for two days during the month, but at least one was a powder day; the other day was a corn snow day at Bolton so that was also good even if there wasn’t fresh snow.

June:  Our only day in June was outside VT on the East Snowfields on Mt. Washington, and the snowfield was probably smaller than usual for that time of year due to the below average Mt. Washington snowfall for the season.  There actually had been some frozen precipitation in the northern mountains leading up to that day, but we were skiing corn snow.

So in terms of overall snowfall, the two above average months of January and March were basically counteracted by the two below average months of November and April, and with the rest of the months being about average, the snowfall for the season ends up… about average.  Some plusses were better than average snowpack in April and May, but that’s somewhat counteracted by the lower than average snowpack in November, December, and January.  It looks like there was an uptick in consistency in the December-January period due to just that one notable warm-up, but with February and March coming in probably about average in that category, and while November is not especially consistent in terms of temperatures, even in the higher elevations, it must have been below average to get so little snow for the month.  So taking the trends of consistency as an aggregate from November through April, I wouldn’t say that there was a massive improvement in temperature consistency/snow quality for this area.  Something that I have noticed around here is that having a few more storms with mixed precipitation is not necessarily a huge detractor in terms of snow quality.  The ’07-’08 season was a good example of this.  We were right in the storm track, so if we did receive some mixed precipitation, there was often another storm on its heels so quickly, that old snow surfaces were covered up.  It felt like we were right in the storm track for most of that winter, except that we had a relatively poor April with little snowfall (we picked up just 1.6” of snow at the house, even less than this past April).  It is interesting to note that winter ’07-’08 (consistently stormy from November through March) and winter ’10-’11 (biggest synoptic storms focused on just February and March) provide quite disparate examples of how to get to very similar seasonal snowfall totals (203.2” and 197.0” respectively at the house, and 330” and 330” respectively up on the mountain).

Tree skiing:  While working on some web page material, I came across the post I made about the average date for the start of Northern Vermont tree skiing, so I decided to add in the ’10-’11 data and see how the season compared.  In my initial analysis through the ’09-’10 season, the average start date for tree skiing was December 9th ± 13 days with an average of 28.2 ± 6.8 inches of snowpack at the Mt. Mansfield Stake.  In terms of my personal log of outings from last season, I’ve got a start date of December 18th, 2010 for tree skiing, and the addition of these data alters the averages very slightly, bringing the date one day later to December 10th ± 13 days, and the average snowpack down a tenth of an inch to 28.1 ± 6.5 inches.  So in terms of the ’10-’11 season, the start to tree skiing was slightly late in that it started about a week later than the mean date I’ve calculated.  With the horrible November in terms of snowfall, and much of the December snowfall being dry fluff, the late start is not too surprising.  However, the date is well within one standard deviation, so in that sense the start to tree skiing was another parameter of the season that was basically “average”.

On that temperature consistency/snow quality note, I was curious about the powder skiing we did throughout the season, so I checked my reports.  For the list of outings below, I placed a P whenever we were skiing powder, and put a red X if we weren’t, so it shows the pattern of when we did have powder, and when we did not.  Links to the text and pictures for all the individual reports are available below if people want more details about the depth/consistency of the snow, or one can also step through the J&E Productions web log, which has an entry for each outing.  It’s interesting to note that starting at the beginning of the season in October and continuing through to March 26th, there were only four days (December 31st at Bolton Valley, January 1st on the Bolton Valley Nordic/Backcountry Network, March 5th at Cochran’s, and March 20th at Stowe) where we weren’t skiing powder.  Strangely enough, I’ve never looked at a season in that way before, but it did give me an even greater appreciation for just how much powder there is to ski around here.  After March 26th, the powder skiing really trickled off this season, although there were still at least a few days in there.  I’m not sure how this season compares to others since I’ve never looked at one like this before, but I suspect most other “average” seasons would look similar for the way we ski, and with our pattern of skiing there might be similar patterns even in seasons that deviate more from average snowfall.

Stowe, VT, Saturday 16OCT10
Stowe, VT, Sunday 05DEC10
Bolton Valley, VT, Friday 10DEC10
Bolton Valley, VT, Saturday 11DEC10
Stowe, VT, Sunday 12DEC10
Bolton Valley, VT, Saturday 18DEC10
Bolton Valley, VT, Sunday 19DEC10
Bolton Valley, VT, Thursday 23DEC10
Bolton Valley, VT, Friday 24DEC10
Bolton Valley, VT, Monday 27DEC10
Bolton Valley, VT, Tuesday 28DEC10
Bolton Valley, VT, Thursday 30DEC10
X  Bolton Valley, VT, Friday 31DEC10
X  Bolton Valley Nordic & Backcountry, VT, Saturday 01JAN11
Bolton Valley, VT, Saturday 08JAN11
Bolton Valley Nordic & Backcountry, VT, Saturday 08JAN11
Stowe, VT, Sunday 09JAN11
Bolton Valley, VT, Thursday 13JAN11
Bolton Valley, VT, Saturday 15JAN11
Bolton Valley, VT, Sunday 16JAN11
Bolton Valley Nordic & Backcountry, VT, Monday 17JAN11
Bolton Valley Nordic & Backcountry, VT, Saturday 22JAN11
Bolton Valley, VT, Saturday 29JAN11
Stowe, VT, Sunday 30JAN11
Bolton Valley, VT, Thursday 03FEB11
Bolton Valley, VT, Saturday 05FEB11
Stowe, VT, Sunday 06FEB11
Bolton Valley, VT, Saturday 12FEB11
Stowe, VT, Sunday 13FEB11
Bolton Valley Nordic & Backcountry, VT, Monday 21FEB11
Bolton Valley, VT, Friday 25FEB11
Bolton Valley (Timberline), VT, Saturday 26FEB11
Bolton Valley, VT, Saturday 26FEB11
Stowe, VT, Sunday 27FEB11
X  Cochran’s, VT, Saturday 05MAR11
Bolton Valley, VT, Sunday 06MAR11
Bolton Valley, VT, Monday 07MAR11
Stowe, VT, Tuesday 08MAR11
Bolton Valley, VT, Saturday 12MAR11
Stowe, VT, Sunday 13MAR11
Monroe’s Sugarin’, Barton, VT, Saturday 19MAR11
X  Stowe, VT, Sunday 20MAR11
Bolton Valley, VT, Wednesday 23MAR11
Bolton Valley, VT, Friday 25MAR11
Bolton Valley, VT, Saturday 26MAR11
X  Stowe, VT, Sunday 27MAR11
P  Bolton Valley, VT, Saturday 02APR11
X  Stowe, VT, Sunday 03APR11
Bolton Valley, VT, Thursday 07APR11
X  Bolton Valley, VT, Saturday 09APR11
X  Stowe, VT, Sunday 10APR11
X  Bolton Valley, VT, Sunday 17APR11
X  Stowe, VT, Tuesday 19APR11
X  Sugarbush, VT, Friday 22APR11
Bolton Valley, VT, Saturday 23APR11
X  Bolton Valley, VT, Sunday 01MAY11
Stowe, VT, Friday 06MAY11
X  Mount Washington, NH, Saturday 04JUN11

So yeah, long story short, pretty average season in my book.  On that note, since we’ve been back from Montana, the only season we’ve had with substantial snowfall deviation from average for Northern Vermont was a negative one in ’09-’10 as I show in that table of Bolton Valley snowfall near the top of the post.  There definitely hasn’t been anything like what many parts of the Western U.S. saw last season, but as I look at the list of outings above there’s still been plenty of great skiing.

Thunderstorms and some heavy rains overnight

It didn’t seem like it rained a lot last night, but I found 1.63” in the gauge this morning, so it obviously added up.  We had some losses of power similar to what Powderfreak noted – a couple short ones in the evening, and then it went back out again around 8:00 P.M. and it was gone for the night.  It came back on early this morning at some point.  I didn’t stay awake for it, but apparently we had thunder and lightning pretty continuously through about 2:00 A.M.  This morning I was surprised to see the Winooski way back up to a level even with our local V.A.S.T. bridge and hogging almost the entire valley in our area, just like back in mid April when the snowpack was starting to melt.  I think it may have even been a bit higher this time, as the typically flooded residences and farmland west of the Cider House seemed quite inundated with water.  The water was probably the closest I’ve seen it to washing over Route 2 in that area – I think another foot of depth and there would have been water on the road.  I was surprised it got so high relative to the amount of water I recorded in the gauge, but then I checked the CoCoRaHS maps and saw that one observer over in Caledonia County reported 3.66” of water with this event.  I don’t think they are actually in our drainage, but clearly someone out to our east got a load of water from these storms overnight.  Our bus was late this morning due to road closures in the Montpelier area, so things have certainly been disrupted by the water.  I added an image of the VT CoCoRaHS table of Daily Precipitations Reports as of ~7:30 A.M. this morning, and it indicates that someone over in Danville got over 4 inches of liquid from these storms, so there are reports of some large amounts of liquid coming in from Caledonia County.

Table of rain totals from CoCoRaHS, May 27th, 2011
Some Vermont rain totals from the thunderstorms that came through the area overngight - some areas of Caledonia County to our east had over 4 inches of rain

Snow line around 1,500′ this morning

It was ~41 F at the house this morning, so I suspected that the snow level was still a bit high for new powder in the easily accessible elevations, but I checked in at Bolton on the way in to Burlington this morning to get a handle on where things were at in terms of base and new snow.  I could tell that it wasn’t yet a huge hit below 2,500’ yet because the cars coming down the road didn’t have snow on them, but the precipitation certainly looked like snow up high.  Here’s the vertical temperature profile I observed on the Bolton Valley access road around 7:00 A.M. with comments on the precipitation/accumulation; hopefully it will be useful for other mountain recreationalists:

340’:  41F (light rain)
950’:  40F (light/moderate rain)
1,100’:  39F (moderate rain)
1,500’:  38F (moderate rain/snow)
1,800’:  37F (moderate snow)
2,000’:  36F (moderate snow)
2,100’:  35F (moderate snow, accumulating)

As you can see from the above list, snow wasn’t accumulating until I reached the village at 2,100’, but it seemed to be accumulating on most surfaces other than the pavement, and there was probably ¼ inch down when I was there.  Skier’s left of Beech Seal showed a couple of breaks in coverage, as I suspected it would based on my Sunday observations, but it was still pretty close to continuous.

Even back down in the valley, there were some bouts of moderate precipitation, so hopefully that continues to hit the mountains.  Roger Hill was thinking that the snow level would rise a bit during the day today, so that may have to be factored in as well.

Heavy rainfall and more high water today

I haven’t seen any snow with this system, but last night’s precipitation seems worthy of note because we had 2.30 inches of liquid and the Winooski is back up even with our local VAST bridge as it was on the 11th, despite the fact that most of the snow has already melted in the lower elevations.  Some area schools are closed due to road access issues with this event.  I just summed my CoCoRaHS numbers for April and with this latest event the total liquid is right at 8.00 inches for the month thus far.  While I had that open I grabbed a few additional liquid numbers.  For the 2011 calendar year up to this point at my reporting location the liquid precipitation is at 20.46 inches, for the 2010 calendar year the total was 54.17 inches, and for the ’10-’11 snowfall season as it currently stands (October 15th, 2010 – April 16th, 2011), the total was 28.09 inches.

The snow in the yard has melted

The last of the snow in the yard melted today, so I can finish off that portion of my seasonal snowfall numbers.  The data for the last of the snow melting out in the yard (as of this season the mean date is April 15th ± 10 days) is actually something I’ve recorded all the way back since our first winter here (2006-2007) and April 24th is one day later than the previous record I had down (April 23rd, 2007).  This puts the continuous snowpack season in the yard at 141 days, which is exactly the same number recorded for ’06-’07.  Both of those seasons had slow starts with poor November snowfall, and snowpack that did not become established until early December, so they are well behind the highest value of 152 days recorded for the 2007-2008 season.  The next benchmark I’ll monitor will be when the last of the snow melts out in our neighborhood, which tends to be about a week beyond when the snow melts out at the house.

As I was skiing at Bolton yesterday I was reminded of some outings in April ’07, and realized that while the snowpack is in excellent shape this spring, the skiing this month has really paled in comparison to the equivalent period back in ’07.  Even down at this elevation we had almost two feet of snowfall in April ’07, and this season we’ve had just 4.4 inches.  I’m not sure what the mountains have had this April, but in ’07 it was measured in feet; I skied one day mid month on the mountain where I found up to 19 inches of new snow, and that was for just one of the storms.  The reading from the Mansfield stake on Friday was certainly respectable at 82 inches, but for the same date in ’07 it was actually at 84 inches.  It’s really been just an issue of the storm track this April; the moisture has been there, but the track has been too far to the north/west to get into the appropriate combination of precipitation and temperature.  With a good track over the past few weeks we probably would have had another April 2007 on our hands.  I think that the past couple of springs have been so poor in the snowfall department that some perspective has been lost on April’s potential, this one is good in terms of base/snowpack, but I’d say subpar for snowfall (we’re still below average by a few inches at the house).

Bolton Valley, VT 07APR2011

Image of track on the Glades trail at Bolton Valley
Adding another set of tracks to the Glades trail

I headed up to Bolton Valley today and got in on some of the powder from the recent snowfall.  The depth of the new snow was topping out in the 9-inch range, but the nice density gradient had it skiing deep just as Denis commented in his report from Stowe, and Powderfreak indicated in his initial update as well.  It was another great April powder day in the Northern Greens, read my full report to see more pictures and details.