November

Most anticyclonic November since 1871

A quick look at the objective LWTLWT Lamb Weather Types are often used in UK-based analyses, with individual weather patterns based on the eight primary cardinal directions (N, NE, E, SE, S, SW, W, NW) plus cyclonic (C), anticyclonic (A) and unclassified (U) types. data from 1871 to find the most anticyclonic November reveals that 1942 and 1988 (60%) are at the top of the pile. Not a lot of people know that. 🙂

As you might expect, November 1942 and 1978 were both quite dry and cold months.

I have no idea if this is an analog for the coming winter, but I’ll do a bit more digging and see what I can find out what the following winters were like.

November 5, 2024

Circulation, LWT, November

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November 2023 – Mean Pressure

In November it looks like the semi-permanent Icelandic low decided to do some early Christmas shopping and head southeast towards Scotland. Thanks to blocking, from Greenland across to northern Scandinavia, for much of the month, anomalies were low from Denmark to eastern Russia (-12 hPahPa A Hectopascal is the SI unit of pressure and identical to the Millibar) and higher (+8 hPa) to the northeast of Iceland. Much of the cyclonic activity in the first half of the month took place at latitude 50° north, the North Atlantic’s answer to the roaring forties. 😉

Here’s a closer look at the daily charts and associated LWTLWT Lamb Weather Types are often used in UK-based analyses, with individual weather patterns based on the eight primary cardinal directions (N, NE, E, SE, S, SW, W, NW) plus cyclonic (C), anticyclonic (A) and unclassified (U) types. and GIGI Gale Index.

November 2023 – Mean Temperature Anomalies

The curious thing is in a record warm world why has it been so cold in the last month in our bit of it?
Answers on a postcard to the editor if you please.

Global Temperatures | November 2023 | Sixth consecutive hottest month

The scores-are-in, and it’s a ten-from-Len, as the world produces a sixth consecutive record warmest month for November, which is a record in it’s own right. I make the daily mean for November 9.81°C which is 0.22°C higher than the previous warmest in 2015. It’s not quite as impressive as in previous months, but nonetheless it’s still quite remarkable. The Daily values from my DIYDIY Do It Yourself series are no less impressive as you can see in the graph below. This year started setting daily records at the beginning of June and it’s been #1 daily warmest for much of the six months since then. Remember you heard it first here even if it was a racing cert 😉

Autumn [SON] 2023 -Central England Temperature

After unprecedented warm spells at both the start of September and October, Autumn 2023 was always going to end up being one of the warmest on record, and for along time it was, but the single cold spell at the end of November prevented this happening, and it ended up the third warmest since 1659, behind 2006 and 2011 with a mean temperature of 12.2°C, which was 1.4°C above 1991-2020 LTALTA Long Term Average. This is usually defined as a 30 year period by the WMO..

November 2023 – Weather Summary

Mean temperatures were close to average across England and Wales and southeast Scotland but slightly below average across the north and west of Scotland. Rainfall was above average in the south but much of Scotland was drier than average. Sunshine was well above average across England, the southwest and northwest of Scotland and Northern Ireland but much duller across west Wales, southwest England and northeast Scotland.

November 2022 – Mean Pressure & Anomalies

Dear Diary,
It’s no wonder that November 2022 was both windy, wet and mild across IONAIONA Islands Of North Atlantic. Yes I know there's an island called Iona, but this is so I don't have to use the term 'British Isles' when referring to the whole of Ireland and the UK.. The Icelandic low was over 19 hPahPa A Hectopascal is the SI unit of pressure and identical to the Millibar lower and a little further to the SW than usual, whilst the Azores high was 2 hPa higher than the LTALTA Long Term Average. This is usually defined as a 30 year period by the WMO., which squeezed the SW flow even tighter. Pressure was close to 10 hPa above average for the month across northern Scandinavia.

December 4, 2022

November, Pressure

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November 2022 – Weather Summary

Dear Diary,
I swear the Met OfficeUKMO The Meteorological Office is the United Kingdom's national weather service. It is an executive agency and trading fund of the Department for Business, Energy and Industrial Strategy are getting faster at publishing these charts and gridded climate data. You always had to wait at least a couple of days in years gone by but now they’re instantly available.

December 1, 2022

November

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