Tuesday, November 27, 2018

There's snow and there's snow

October was cold and November has been snowy. It happens sometimes, even now in an era of warming average temperatures globally.

November 1989 was not only snowy, it was downright wintry. November and December were so cold that year that the ice in Wolfeboro Bay would support trucks and clusters of bobhouses before Christmas. But then January 1990 set what was at that time a record for average warmth. And the latter half of December had been very dry, even as it remained cold. We farmed our accumulated powder on the cross-country ski trails until January's warmth ruined it. By the middle of the month, winter precipitation had made its way back to us, but the winter was not epic.

The snow this November has not been powder. Today's snow kept mixing with rain. The temperature remained above freezing, so the moisture content was high, but the snow did not get impressively deep. There's a layer of wet slush at the ground that could still be there in January...and beyond.

Deep early snow inhibits the freezing of the ground and insulates water in the depths of the snowpack. If we get sustained bitter cold, and the snow hasn't gotten too deep yet, the lower layers have a chance to set up. If, instead, we get more warm snow before any cold powder that might come our way, the ghost of autumn's rains will lurk in the hollows to ice your skis as you shuffle through the back country.

The sticky stuff is great for going uphill. It can also be a good friend when threading tight vegetation going down. Today I went out to look at some downed trees that had taken down a power line. It wasn't the power line that serves my part of the grid. That went down later. But it's near my house. Someone on a local social media page had mentioned it. So I bushwhacked over. The slow snow allowed me to maneuver through tangles of downed trees that date back to last October's roaring gale that dropped a 95-foot pitch pine on my property. That one fell conveniently between two buildings. It took out the power to my house for a week, but it didn't break walls or roofs.

The maximum height for a pitch pine is usually 75 feet. But the ones still battling here as the white pines take over are quite large. At least a couple of them form the largest part of the tangle I skied around today.

People who don't know any better see snow and assume that it's good for ski areas. Ski areas will make the best of it and take the money, but even downhill areas are dealing with lots of surface water, tough grooming conditions, and unfrozen ground. Cross-country trails have it even worse. Especially with a large percentage of skiers who depend on groomed surfaces, we spend a lot of time explaining things to impatient skaters. They're welcome to go out and experience it for themselves. And once someone does, no further explanation is needed.

Last week, snow that fell as heavy, barely movable cement dried out and fluffed up with a shot of bitterly cold air. It became genuine powder. It was great for gliding and pretty poor for climbing. And it wasn't deep enough to provide security going downhill at any speed. Believe me, I tried. Below that tempting white mantle was the forest floor: newly-fallen leaves, branches, stumps, sticks.

No shot of deep cold is poised to follow this most recent winter storm. Quite the opposite: temperatures headed for the upper 30s to 40. Daylight is near its shortest now, so the sun can't do much if it comes out at all, but 40 is still 40.

Statistically, snowy Novembers do not tend to usher in long, continuously snowy winters. That's not to say they can't, but they usually don't. It's good, in a way. Snow management turns into a serious full-time job when it keeps on dumping, week after week.