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Nenana - don't bet on it.

It is that time of year again when we look at the Nenana Ice Classic The Tanana River is still frozen from bank to bank with no open water showing. The Tripod is still standing firmly in place.

The date the ice breaks makes lucky betters a lot of money and global warming watchers all excited whether it is earlier or later than whenever...

One point I hadn't realized before is that the frozen river is down stream of Fairbanks, Alaska's second largest city, with an urban population of 51,926. So it isn't a crystal clear wilderness stream but one that is subject to urban influences. I have no idea how they keep the streets of Fairbanks ice free but any run off from that would be one small factor for instance...


I dunno about Alaska, but in Finland they don't bother keeping the streets clear of ice and snow. The locals just switch to studded snow tyres and know how to drive.

It still doesn't take anything away from your main point though. I'm sure a load of other stuff ends up in the river affecting its thaw rate.

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