The reason why October has been so wet

It’s not very difficult to see the reason why October has been so wet if you take a look at charts of mean pressure and anomalies so far this month over the eastern Atlantic and western Europe. Higher than average pressure has dominated again to the northeast of Iceland (+9 hPa), the usual Icelandic low is much deeper (-11.4 hPa) and further southwest than it normally is, because the Azores high has refused to budge, and if anything has transferred a little further east (+2.1 hPa). Regular readers of my blog will be aware that this unusual pattern is what’s been happening at times since May of this year.

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