2015/04/25

The Annual Nenana Ice Classic is Over for Another Year

After an initial movement 2 days ago an ice-jam prevented full movement of the tripod and the clock was not stopped. However, the Tanana River officially broke up on April 24th at 2:25 P.M. Alaska Standard Time.

http://www.nenanaakiceclassic.com/

Tripod moved but not moving


Not free of ice but no more tripod:



So how does this extended date fit in with previous data.

2 plots
one timed from start of year


this one timed from vernal equinox


Seems to be following a declining period with a few early peaks