November 2012 statistics and summaries

[TonyH]

November 2012, Lampeter, Ceredigion, Wales

Cool and rather wet

A consistently unsettled month, often on the cool side, with only brief milder interludes. The most notable aspect was the very wet weather with localised flooding towards the end, when over 4 inches fell in the 7 days of 19^th to 25^th. There was quite a high incidence of frost for November with 12 sub zero nights, the lowest being -7.5c on the 29^th.

1^st – 4^th: Very cool and unsettled; rain or showers, some heavy. Sheet lightning observed on the evening of the 3^rd but too distant to hear thunder. Touches of frost by night.

5^th – 8^th: Fairly dry, just a little light rain or drizzle at times with near normal temperatures.

9^th – 12^th: Unsettled again with further rain or showers at times, some heavy. Mild 12^th.

13^th – 15^th: Mainly dry and mild, cold with frost and fog 15^th.

16^th – 26^th: Very unsettled with spells of rain and showers, very heavy at times with localised flooding. Windy at times with gales 22^nd. Temperatures varying between cool and very mild with lows crossing the UK; a few frosts, one hard one 18^th, minimum -5.2c.

27^th – 30^th: Turned cold but dry. Sunny at times, some hard frosts, coldest being -7.5c on the 29^th colder than any of the official weather stations in the UK even Scotland, with maximum of just 1.8c.

Total rainfall: 185.4mm

Wettest day: 31.3mm 22^nd

Rain days >0.2mm: 23

Wet days >1.0mm: 19

Days of heavy rain >10mm: 8

Mean temperature: 5.5c

Mean Max: 8.9c

Mean Min: 2.0c

High Max: 12.9c 13^th

Low Max: 1.8c 29th

High Min: 11.0c 13^th

Low Min: -7.5c 29th

Air frost: 12

Ground frost: 17

Mean RH: 90%

High RH: 100% various

Low RH: 65% 3^rd

Predominant wind directions: SSE

Mean wind speed: 1.7mph

Mean pressure: 1008mbar

Max pressure: 1026mbar 7^th

Min pressure: 974mbar 1^st

Days with:

Hail: 3

Gale: 1

Thunder: 0

Lightning only: 1

Fog: 4

Fog at 0900: 1

Snow or sleet: 2

Snow lying: 0

[Aaron]

Mean: 5.5 °C

Mean max: 8.5°C

Mean min: 2.4°C

Max temperature: 14.6°C

Min temperature: -4.1°C

Rainfall: 82.5 mm

Days with rain: 15

Days with rain >1 mm: 11

Most in one day: 17.9 mm

Sunshine: 71 hours

[SP1986]

November 2012 Statistics

This month was characterised by average maxima and below average minima, continuing the locally below average run of months. The months rainfall was slightly above average but not majorly so, and with some warm days mid-month, this was a fairly typical month overall. Towards the end, as you would expect, I recorded my first air frost, though it was a little colder than what we might expect here for November. All in all, not a month characterised by anything particularly out of normal experience.

Below are the statistics for my weather station during the month of October.

Mean Maximum: 10.2C

Mean Minimum: 4.4C

Overall Mean: 7.3C

Monthly Rainfall total: 67.9mm

Rainfall days: 19

Max rainfall in one day: 13.1 (25th November)

Highest daily maximum temperature: 15.2C (20th November)

Lowest daily maximum temperature: 5.6C (30th November)

Highest daily minimum temperature: 11.7C (13th November)

Lowest daily minimum temperature: -2.5C (29th November)

Days with Ground Frost: 6

Days with Air Frost: 1

Days of falling snow: 0

Days of lying snow: 0

Thunder days: 0

Temperature frequency breakdown

Maximum temperature:

5.0C to 9.9C: 10 days

10.0C to 14.9C: 19 days

15.0C to 19.9C: 1 days

Minimum temperature:

-5.0C to -0.1C: 1 day

0.0C to 4.9C: 16 days

5.0C to 9.9C: 12 days

10.0C to 14.9C: 1 day

Compared to the November CET (81-10 average = 7.2), my average comes in at 0.1C above the CET average, making it an average month.

[johnholmes]

A wet month even with my very sheltered Davis raingauge, temperatures above average all round.

Mean=7.2(6.5)

Avge Max=9.7(9.3) highest daytime=14.8 on 20th and lowest daytime=3.4 on 30th

Avge Min=4.7(3. coldest night=-2.4 on 30th(coldest since 4 Feb 12) and warmest night=11.1 on 20th

Rainfall=62.8mm with 21 the wettest with 14.2mm; 14 days with 0.2mm or more and 10 with 1.0mm or more

no snow, air frost(6) and 9 ground frost(11) with 2 days of fog(4) and nil thunder

[Styx]

HOBART is Tasmania's capital city, situated at sealevel on an estuary, and backed by a 1270m/4200ft mountain range.

November - Last month of Spring

Tornados with localised intense hailstorms broke out on a multi cell storm line on the 9th, in an epically rare event unprecedented in scope ( the first tornado observation since 1972 in Hobart; and as three F1 tornados touched down close to residential areas, the weather bureau issued its first ever tornado warning for south east Tasmania ). TV news report here! http://www.abc.net.au/news/2012-11-09/tornado-warning-for-southern-tas/4362868/?site=hobart

As if "Tornado Friday" had sucked out the energy out of the atmosphere for the remainder of the month, a prolonged un-springlike dry spell ensued for the remainder of November, as weak high pressure centres moved west to east over the southern mainland, before high pressure consolidated to Tasmania's east at months end, directing a warm to hot airflow of desert origion over the island.

For the 13th month in a row, the average monthly temperature exceeded the 1981-2010 average.

Average maximum: 20.4 ( +1.5 )

Average minimum: 10.4 ( +0.5 )

Rainfall: 25mm ( Average 53mm )

Extremes in daily November temperature:

Highest maximum: 33.7 ( Record 36.8 in 1937 )

Lowest maximum: 13.9 ( Record 8.3 in 1913 )

Highest minimum: 18.8 ( Record 19.2 in 2003 )

Lowest minimum: 4.1 ( Record 0.3 in 1913 )

[leehws]

Novemberber 2012 - Colwyn Bay

Temperature -

Mean – 9.4C

Mean Maximum – 10.0C (-1.1)

Mean Minimum - 3.7C (-2.0)

Maximum – 14.4C (20th)

Minimum - -1.4C (29th)

Lowest Maximum – 4.9C (29th)

Highest Minimum – 11.9C (13th)

Rain -

Total Rainfall – 116.0mm (129.2%)

Wettest Day - 22nd – 27.4mm

Rain Days - 23

Wind -

Highest Gust - 24mph (22nd)

Average Speed - 1.0mph

[Summer Sun]

Well I can't find a December thread like this so I will use this one instead

The average CET for 2012 is 10.13c to the end of November the normal is 9.91 the year is going to be fairly close to average unless we get a significant cold spell then we could finish just above average