Now looking like a major change of type going into next week. Clue is in the T+120 FAX issue today 8/2/12. Note the strong warm advection west of Greenland at about 53 degrees west. 24 hours later (on Monday) we will then start to see a Miles extension or plunge of deep cold air just east of the meridian in an arctic northerly. This change of type will be most noticed in Northern Ireland...

-9.5C at the moment, after dropping steadily through the evening, and still falling. Lowest minimum of the winter here, so far. Probably THE coldest night I'll get this winter, I think. - Tom Blackmore SW Essex. 80m amsl

2:22am. Temperature here has just hit -10.0C. Previous low was -9.6C on 7th Dec 2010. And it is still dropping like a bomb, and shows no sign of levelling off in the near future. jim, Northampton 100 metres asl in the middle of a chilly England

This February , today is the first day above 3.0C in February. DP -1.0C and snow largely unaffected in the shade and on the lawn. Dave, S.Essex

Daily Fail reporting this low from last night. http://www.dailymail.co.uk/news/article-2099233/UK-weather-Coldest-night-winter-far-temperatures-plunge-18C-leading-major-ice-warning-half-term-getaway.html brian tropical aberfeldy

Minimum of -8.4 here on the ridge. The coldest night for 25 years since -10 was recorded on 3 nights in February 1986 -- George in Epping, West Essex www.eppingweather.co.uk www.winter1947.co.uk CWOP at http://weather.gladstonefamily.net/site/C4752

"Minus six last night - the best score I've given Stephen for a while." https://twitter.com/#!/MrsStephenFry -- Graham Davis, Bracknell, Berks. E-mail: change boy to man LibreOffice: http://www.documentfoundation.org/ openSUSE Linux: http://www.opensuse.org/en/

Looking at the FAX charts we have yet another warm front coming in from the north on Sunday. Could give another inch or so top up over the very cold slab in the SE. Possibly some drizzly snow further west but might simply just introduce milder conditions and drizzle here. http://www.lyneside.demon.co.uk/Haytor/automatic/Current_Vantage_Pro.htm Will Hand (Haytor, Devon, 1017 feet...

11 February 2012 Wokingham 0900z 330 02kt 4500m HZ SKC -8.3/-9.2 QFF 1037.4 +0.5 in 3hr RMK Snow lying 2cm 90%. Thick hoar. Ground frozen. Snow hard and icy. Untreated roads dry. Cloud cleared before dusk yesterday with a clear and frosty evening and night. 09-09 Screen max 2.3 min -11.4 grass min -17.1 Rain 0.0 Sun (00-24) 1.6 hr

0850 Coldest night of the Winter with MS10.3c. This beats the 20dec10 (MS10.0c) will have to manually look back to the next coldest.. Super Winter sunshine this morning. M09/M10 http://layton.me.uk/12021106SE.GIF --

Some may find this interesting. Note the comments on recent 'stratwarm' http://metofficenews.wordpress.com/2012/02/09/whats-bringing-the-cold-weather-to-europe-and-the-uk/ http://www.lyneside.demon.co.uk/Haytor/automatic/Current_Vantage_Pro.htm Will Hand (Haytor, Devon, 1017 feet asl) ---------------------------------------------

Anyone know who provides the BBC Weather pages with their air pollution forecasts ? The BBC London weather page at http://www.bbc.co.uk/weather/2643743 shows "pollution LOW" whereas the more authoritative page at

Well the pattern repeats. We have been on the edge of mild/cold air for a while now and now again we are back into the deeper cold air. 0930 Min -3.2C. Currently -2.1C with a light easterly wind. 8/8 SC cloud cover all night. Ground frozen but not as rock hard as recently. Looks like a lot of ice higher up with a thin snow cover.

11/0900 Z Feb 12: NE F1 15KM 1SC050 (1CI250) -3.3/-4.6 1036 Rmks: Max (09-09) 3.3, min (21-09) -5.1, grass min -11.1, rain (09-09) 1.9 mm. Slight hoar frost. Ground frozen, hard surfaces dry. -- Andy http://www.romansleighweather.co.uk/

Evershot: 196m amsl 10/02/12 09-09z Ppn: 24hrs 0.0mm Month 15.6mm 30-day 41.7mm Temp: Max 1.7°C

Tideswell, Derbyshire - Saturday 11th February 2012 ----------------------------------------------------- 0900z S F1 5000 HZ 1Sc018 -04.7/-04.9 1036 RMK: A fine sunny morning with a moderate hoar frost. Untreated surfaces are very icy again. Sc edge visible to NW. 09-09z: Tx -0.3 (1440z) Tn -5.7 (0805z) RR trace 15-09z: Tg -7.6 00-24z: Sun nil --

I know this forum is populated by various people with meteorology backgrounds, so thought I'd ask here first... For my PhD I am assimilating data into a general circulation model. Now what I want to do is compare the assimilation result (a simple lat-lon plot of whatever) with a lat-lon plot of the observations. I can simply subtract one from the other to get a difference plot, but I was...

Southcote - 0900Z CALM 6000 HZ 1CI300 -8.0/-9.5 1037 A fine night Small amounts of snow in garden and less than half cover locally Max (09 - 09) +2.6 Min (18 - 09) -9.3 Grass Min (18 - 09) -10.4

110855Z 00000KT 5000 HZ SKC -6.8/-8.3 QFF 1037.3 (+0.5 in 3 hr)= Humidity: 89% (+1% last hour) Max 09-09: 2.7 Min 09-09: -8.7 Average temperature for February: -0.3 Grass Min 18-09: -14.0 30cm Soil Temp: 2.7 Rain 09-09: 0.0 mm February Rain (00-24): 13.6 mm

Got down to -9.1C here in Wanstead. My lowest ever recorded minimum - and that includes a season spent in the Alps...