January 2007

[johnholmes]

hi

well the first month of the year, the second month of winter.

Who will show the highest mean, max, rainfall etc etc?

entires in here please.

A quick look at my own suggests its way ahead as the warmest January since I started with my own observations 10 years ago.

Mean, provisional, is 7.2C, this is 3.7C above the Finningley 1942-1995 average.

John

[reef]

Hedon, East Yorkshire.

January 2007

Warmest Max: 13.6°C (on 09/01/07)

Coldest Max: 2.9°C (on 23/01/07)

Warmest Min: 8.4°C (on 09/01/07)

Coldest Min: -0.6°C (on 23/01/07)

Average Max: 9.4°C (+2.7°C Above 1971-2000 Average)

Average Min: 4.2°C (+2.9°C Above 1971-2000 Average)

Overall Average: 6.8°C (+2.8°C Above 1971-2000 Average)

Rain: 45.5mm (90% Of Normal)

Wettest Day: 18th (9.3mm)

Air Frosts: 1

Days with Snow: 1

Snow lying at 0900: 1 day

Dry Days: 13

Wet Days: 18

Days With Rain >1.0mm: 13

Thunderstorms: 0

The warmest January Ive ever recorded, beating 2005 by almost a full degree. The first three weeks of the month were uniformly mild, wet and windy; with the temperature never falling below 3.2°C. The period 3rd - 13th also saw 8 days in double figures, the warmest of which was 9th, when it reached 13.6°C, the warmest since at least 2002. The 18th also saw exceptional winds, reaching a sustained speed of 40mph with gusts to well over 60mph.

From the 21st onwards it then turned cooler. The 23rd was the only wintry day, with a thin, temporary covering of snow, the only air frost of the month and a maxima of 2.9°C. The final 7 days of the month were then dry, cloudy and settled, but mild once again.

Overall, another disappointing winter month. It was again an almost snowless January (along with 2005 and 2006). It also had the least number of frosts of any winter month since I began recording. Suprisingly for such an unsettled westerly month it was drier than average (90%).

[Red Raven]

A very wet and mild month.

Mean was 6.5°C which is 2.7°C above the '71-'00 mean

Rainfall was also above average at 134.8mm (132%)

Who said AGW doesn't exist!

[Andy Bown]

Since I have been recording temperatures January hasn't really ever been a cold month. Means have actually been on a steady, almost half degree per year, rise...

2004 = 5c

2005 = 5.58c

2006 = 6.12c

2007 = 6.66c

So, excluding this year's figure, this January was 1.10c above the long term average.

What was remarkable this year was the number of days in double figures (13) with most of these being 13c or 14c when the previous highest in any January was 12c!

The overall figure has really been lowered by the period of the 20th-25th when there were several nights at -3c or -4c and days no higher than 5c (inc. one max of 1c). A wintry blip in an otherwise above average month :lol: .

Average max = 9.32c

Average min = 4c

Mean = 6.66c

Dry days = 10

Precip days = 21 (inc. sleet on 2 days)

Rainfall = 109mm of which the vast majority was between the 8th and 20th.

[Polar Continental]

January 2007 Report.

By Paul Carfoot.

An active Atlantic was the main feature during the back end of December 2006, and this was to be the theme during two and a half weeks of January, very mild, very unsettled, windy, and at times stormy with plenty of rain, I recorded 12mm by the 8th here in Burton. The very unsettled and stormy weather continued until the 19th, I recorded some exceptionally strong winds during the period, with a gust of 66mph on the 18th.

After a very mild two and a half weeks, the 20th saw a pattern change as pressure began to rise for the first time this season over Greenland, cooler weather gradually spread south over the UK from the 20th, so by the 23rd all areas of the British Isles were much colder.

I recorded the first air frost of the month on the night 22nd / 23rd with a minimum temperature of –2.3c. And also the first snowfall of the winter on the 24th, with 1cm recorded in Burton. This cold spell continued until the 25th.

On the 26th the high to the north west of the UK began to sink south, this had the effect of cutting off the cold source of air from the Arctic, so the much milder conditions returned to all parts of the country. The very mild and settled conditions continued till the end of the month.

Average maximum temperature = 9.5c

Average minimum temperature = 3.8c

Mean temperature = 6.7c + 2.5 above the CET average.

Warmest day on the 12th = 13.7c

Coldest day on the 23rd = 3.1c

Warmest night on the 9th = 8.8c

Coldest night on the 25th = -2.6c

Ground Frosts = 5

Air frost = 5

Days of snow = 1

Days of lying snow = 1

Rainfall total = 51 mm

Edited February 1, 2007 by Paul Carfoot

[Zenarcher]

1st to 18th For the start of january we had stormy weather and very cold temperatures and lots of rain.

19th to 24th For the middle of january we had snow and ice.

24th to 31st For the end of january cloudy and dry.

[johnholmes]

my monthly stats are:-

brackets are long term averages NOT 1971-2000, 1943-1995 and 1997-

Mean=7.2C(3.5)

Avge min=4.8(1.2)

Avge max=9.7(5.9)

rainfall=42.0mm, 18th the wettest with 9.6mm

19 days with 0.2 or more mm

9 days with 1.0 mm or more

My wind stats, very very sheltered, showed a proper gale for the first time ever, and a max gust of 53 mph at 1400 on Thursday 18 th January.

days with air frost=2

ground frost on 6 days

snow or sleet=0; the average for here is 7 days with snow and 5 with the ground more than half covered at 0900z.

fog=nil

thunder=nil

By far and away the mildest January here since my records started 01/01/97. Also fairly wet.

John

[Summer of '47]

A very mild month - the mildest January at this site since recording began in 1984 (previous record 1990) - with some very windy days. The windiest month and the highest gust speed since the anemometer was installed in Aug 2004 (though sheltered exposure means readings are unimpressive). In spite of a wet start the rainfall total finished below average. The one brief cold snap was responsible for the 4 air frosts and a few hours of snow cover on the morning of the 24th. Sunshine total was probably a little below average due to a long dull spell from 5th to 13th.

Monthly Mean: 7.4 ºC

Average max: 9.5 ºC (2.4C ABOVE average)

Average min: 5.4 ºC (2.7C ABOVE average)

Highest max: 13.5 ºC ( 18th )

Lowest max: 1.6 ºC ( 25th )

Lowest min: -2.0 ºC ( 26th )

Highest min: 11.6 ºC ( 9th )

No.of Days with air frost: 4 days

Low Wind Chill: -6.9 ºC ( 23rd )

Low THW Heat Index: -2.3 ºC ( 23rd )

High THW Heat Index: 12.3 ºC ( 19th )

High THSW Sun Index: 16.1 ºC ( 31st )

Lowest RH%: 53 % ( 21st )

Lowest Dewpoint: -5.1 ºC ( 24th )

Highest Dewpoint: 10.1 ºC ( 8th )

Rain total: 59.9 mm ( 77% of Average)

Wettest day: 9.4 mm ( 17th )

Rain Days ( measurable ): 20

Rain Days ( >= 1.0mm ): 13

High Rain Rate: 28.4 mm/hr ( 17th )

Days with snowfall 3 days ( Max ground cover c. 12mm for 6 hours )

EvapoTranspiration Total: 19.7 mm

Wind Speed Average: 3.9 mph

Wind Speed high gust: 40 mph ( 18th ) Site record since anemometer installed in Aug 2004

Wind Dominant Direction: SSW (67%) followed by W, NNW, WSW

Mean Barometer: 1016.3 hPa

Low Barometer: 987.9 hPa ( 18th )

High Barometer: 1033.5 hPa ( 27th )

High Solar Radiation 436 w/m2 ( 29th )

Sunshine Hours 27.4 Hours **

Sunniest Day: 3.5 Hours calculated with limited sensor exposure, estimate 6+ hrs actual daily total

** calculated with limited sensor exposure, estimate 55 hrs actual monthly total ( below average)

* average at this site 1984 - 2006

Full daily details & stats here: http://www.tonbridge-weather.org.uk/2007/jan2007.htm

Edited February 1, 2007 by Summer of '47

[Stephen W]

January data for Edgefield, North Norfolk:

Average max = 9.0C, 2.4C above average

Average min = 4.4, 2.6C above average

Average temp = 6.7C, 2.5C above average

Warmest day = 13.1C

Coldest day = 4.0C

Warmest night = 8.9C

Coldest night = -1.7C

Days of falling snow = 1

Days of lying snow = 0

Quite amazing warmth!