"Significant flooding is recorded in the Thames Valley on the 11th November(OS); taken together with the entry below (re: winter warmth), this implies a markedly zonal type (or high NAOI), with the associated mean jet translated far enough south to propel cyclonic disturbances across southern Britain in quick succession.

Based on contemporary reports from London [Pepys], Yorkshire & Edinburgh, it seems as if the month of December 1660 was often windy/stormy; [this unsettled/zonal weather possibly extended into early January 1661, which would tie in with the remarks at note above]. In particular, around the 8th December(OSP), from late afternoon through the night, high winds caused considerable damage to thatch, windmills, trees etc., across the north of England at least."

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"A mild winter - using the (early) CET record (nearest whole degC only), the average comes out at 5degC, or roughly one-and-a-quarter C above the all-series mean. Pepys mentions in late January that there had been a general lack of cold weather, and that it was 'dusty' (implying a warm & dry winter), with plants well ahead for the season. However, to counter that statement, there are reports elsewhere at the time of 'high winds, excessive rainfall & flooding'. The two 'types' aren't mutually exclusive though because it could mean that the southeast / London was subject to broadly above-average pressure and small amounts of rain, whilst stormy, wet spells affected the more 'Atlantic' facing regions north & west."