Lookback - December 01, 2014
November 2014
Very mild but wet and rather dull

By Philip Eden

The pressure for November 2014 was near normal in Shetland but below normal in all other parts of the British Isles, with pressure anomaly ranging from 1mbar above normal in Shetland to minus 11mbar in western Ireland. The anomalous flow over the British Isles was cyclonic south-easterly (except in Shetland). All parts of the country were rather mild and much of the country was wet or very wet with rainfall percentages ranging from 78 in northwest England and north Wales and 88 in the highlands and islands of Scotland, to 156 in Northern Ireland and 149 in southeast England. Sunshine percentages ranged from 74 in both northeast England and southeast England to 103 in Northern Ireland.

Mean maximum temperature during November ranged from 13.1°C at Jersey airport (Channel Islands) to 7.7°C at Braemar (Aberdeenshire), while mean minimum temperature varied between 10.1°C at St Mary's (Isles of Scilly) and 2.0°C at Loch Glascarnoch (Wester Ross) and Cromdale (Morayshire). Mean temperatures were between 0.5 and 2.0 degC above normal in all regions, and the Central England Temperature (CET) of 8.7°C was 1.5 degC above the mean for 1981-2010; this was the warmest November only since 2011, but in the last 100 years only four Novembers were warmer, five had the same mean temperature, while 91 were colder.

The highest maximum at a standard site (i.e excluding rooftop and mountain sites) in the UK was 19.6°C at Jersey airport (Channel Islands) on the1st, while the lowest minimum was minus 4.3°C at Loch Glascarnoch (Wester Ross) on the 10th. The lowest daytime maximum was minus 1.7°C at Cromdale (Morayshire) on the 26th, while the warmest night occurred during the early hours of the 1st with a very high minimum for November of 15.6°C at St James's Park (Greater London).

Rainfall averaged over England and Wales during November in a record stretching back to 1766 was 123.9mm which is 124 per cent of the average for the standard reference period 1981-2010; this was the highest November rainfall only since 2012; in the last 100 years 25 Novembers were wetter while 75 were drier. The equivalent figures for Scotland were 91mm and 95 per cent of the normal amount, and for Northern Ireland 136mm and 156 per cent. Monthly totals at routinely-available sites ranged from a total of 242mm at Whitchurch (Pembrokeshire) to 38mm at Edinburgh Botanic Gardens (Midlothian). The heaviest daily fall was 66.4mm on the 6th at Broadford aerodrome (Skye).

Sunshine averaged over England and Wales during November (including an estimated figure for the 30th xx) was 62.5 hours which is 96 per cent of the 1981-2010 mean, making this the dullest November since 2004, and in the last 100 years 35 Novembers were duller and 65 were sunnier. The equivalent figures for Scotland were 50 hours and 92 per cent, and for Northern Ireland 62 hours and 112 per cent. Largest total in the UK was 93.5 hours at Culdrose (Cornwall), and the smallest was 27.7 hours at Tideswell (Derbyshire).

Strongest winds during November occurred on the 13th with gusts to 75mph at Mumbles Head (Glamorgan).

By Philip Eden

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