has a 2/10 concentration of Beaufort Sea ice moving in at 6nm per day. By 20130826 this area could likely increase to 5/10. Weather winds are the prime mover of ice and drift. But remember the influences of the clock-wise rotation of the Beaufort Gyre.
For comparison here is the University of Bremen Polar View coarse ice graphic (click for larger image)
Navy 30 day moving animated ice speed and drift forecast
Thanks to Uwe in Germany for spotting this choke-point.