Notes on winter 2015
Winter Lake Watching. Haven't been
able to do this for a few years. This year my proximity to the lake
combined with a lack of westward migration has made it easy to keep
tabs on the winter wilderness a half mile from my house. The ice
keeps growing.
According to the internet;
Between 1973 and 2013 the average ice
cover on Lake Ontario ran a little under 20%. But last year it was
around 60%. Welcome to the new age of the meandering jet stream and
associated “polar vortex” weather factors that many believe are
tied to reduced ice cover in the arctic and over all global warming.
Great Lakes ice cover nearly doubled
last week between Feb 7 and Feb 15.
It's catching up fast to last year's
totals. According to NOAA the usual maximum cover happens between mid
Feb and end of the month. NOAA tells us “ Lake Ontario's extreme
depth (86 m average; 244 m maximum) translates to tremendous heat
storage capacity. It also has a smaller surface area for heat loss.
In addition, cold air outbreaks from the northwest and west are
moderated by the waters of Lakes Superior, Michigan, and Huron. These
factors combine to keep ice cover on Lake Ontario at a relatively low
level most years.”
Lake Ontario satellite photo from Feb
16 shows a big patch floating around in the middle of the lake and
lots of solid ice up around Main Duck-Kingston- Prince Edward Bay.
Looks like it's at least a third if not more covered now. At this
time last year it was 40 % covered. We're close to that now. We
topped out at 61.5% last year. Stay tuned.
A Michigan weatherman writes of the
spell of light winds contributing to rapid ice build up on his lake.
He might have that right. Feb 16 and
Feb 17 were both nearly calm here in North Wolcott. And our
thermometer showed a lonely digit of 1 F this am. One is a lonely
number here on the south shore. We even dipped negative barely last
night. First time we'd seen this. So it might be another tough year
for the ducks.