Here is the Bremen plot of AMSR-2 sea ice concentration from my previous post, the region at issue is the darkening in the upper left quadrant.
Now four days on the feature is persisting and likely expanding.
So what of Chukchi?
Chukchi extent is collapsing well ahead of any other year.
Chukchi compactness is below any other year. It looks likely that Chukchi will be wholly ice free before the end of July. This is especially as the Arctic remains dominated by high pressure for the next 7 days in forecast models like GFS. Images from Wetterzentrale.
18 July Forecast.
And Beaufort Sea extent fails to decline.
This looks to me to be a result of the presence of multi year ice, as shown in the following graphic from Fowler/Maslanik/Tschudi's drift age model.
So it is still feasible that, like Beaufort, the presence of MYI in the Chukchi Sea could cause loss rates to slow later in July.
PS, for comparison, here is the 2012 ice age distribution from the drift age model. The point being the greater spread of MYI in 2015.