The blocking high appears stronger with each new run, with the usual tendency for any notable shift to be put back beyond the higher-res 0-192h range of the GFS model.
For a few runs now ECM hasn't produced much in the way of a breakdown, as the jet remains split well west of the UK, the southern arm then heading underneath the blocking near the UK while the northern arm is steered up towards the Arctic thanks to the trough complex around Greenland... though there are now signs that the trough may start to back towards Canada starting about a week from now.
If that happens, blocking to the NW becomes more of a possibility. This is the same shift that cold-seekers kept looking out for last winter, but despite the models coming up with it on numerous occasions at the longer range, it never verified. Will things be different this time around? Only time can tell.
At least the Atlantic Rossby wave length (distance covered by the main trough-ridge combo in the Atlantic) is shorter for the forseeable than it was last winter - hence we're dry and settled rather than at the soggy end of an Atlantic storm train.
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T-Max: 30.2ยฐC 9th Sep (...!) | T-Min: -7.1ยฐC 22nd & 23rd Jan | Wettest Day: 25.9mm 2nd Nov | Ice Days: 1 (2nd Dec -1.3ยฐC in freezing fog)
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