This isn't an official Arctic summer storm (ASS) update, but it comes damn close to one. The thing is that the last domino hasn't fallen yet, as the storm is still there, though less powerful.
In yesterday's Arctic storm update I mentioned how a large swathe of ice floes had almost detached itself from the main pack. Well, I think it's as good as completely detached now:
We already speculated about such an event back in 2010, the first melting seasson that was covered on the ASI blog, in a blog post called Breaking away from the pack:
Not so long ago, in one of the comment sections, we discussed whether it would be possible for a large piece of the ice pack to separate itself from the main body of ice in the Arctic Basin.
I'm not sure, but I think the ice pack falling apart with patches of highly concentrated ice breaking away from the pack could be a precedent in the satellite era.
What if that forecasted high-pressure system over the Beaufort Sea starts to develop for real next week and the Beaufort Gyre kicks into gear again, spurred by westerly winds? One would think the small patch(es) in the Beaufort Sea would get pressed into the central pack again, but perhaps the bigger patch in the East Siberian Sea would get swirled loose by the winds blowing westwards.
Okay, it took eastward blowing winds. Close enough. ;-)
I zoomed in a bit and made an animation of the recent changes on the Uni Bremen sea ice concentration maps: