Dave Clarke

Between Norwich and Ipswich, this stuff is forming over land as there is nothing (much) over the North Sea on radar loop, then BAM, wintery precip.

Starting to snow a bit heavier here now

About 3 hours or so, just in time for rush hour

The precip moving SW from Suffolk towards London is intensifying on radar loop

UKMO Advisories for London and the SE extended through to Sunday now...

Starting to settle here now, a light dusting covering everything

Just started here, kitten and GF love it

Snow mentioned in the Stanstead TAF earlier on LONDON/STANSTED EGSS 051703Z 0518/0624 20005KT 9999 SCT030 BECMG 0518/0521 09010KT PROB30 TEMPO 0518/0524 3000 SN BKN005 BECMG 0523/0601 5000 -SN BR BKN010 TEMPO 0600/0616 1000 SN BKN002 BECMG 0612/0615 01010KT 9999 NSW FEW030

Well they added in GT London to the METO warnings Paul, so there is a bit of easterly movement in the low

Wording of the new warning:- London & South East England: Gtr London Heavy Snow 2240 Tue 5 1100 Wed 6 Snowfall on Tuesday night and Wednesday morning will give accumulations of 2-5cm quite widely. Accumulations may reach between 5-10cm locally. This is most likely in west London and western parts of Hertfordshire and Bedfordshire where there is a low risk of 10-15cm. This may cause disruption to transport networks. The public are advised to take extra care and refer to the Highways Agency for further advice regarding traffic disruption on motorways and trunk roads. Issued at: 2032 Tue 5 Jan

It got snowed in

That feature's been turned off to give the server a break!

Paul Blight's latest synoptic analysis (From UKww ) Juicy bit highlighted 19Z Update Developments now taking shape as the strong upper trough comes SE and low pressure begins to develop along it. Upper circulation centre is tracking south nr Sea Area Lundy and is bringing more Sleet / Hail and Snow onshore across the SW. Elsewhere the Barometer is falling and that Low pressure is developing in Sea Area Portland around 999mbs. The Frontal Structure is beginning to get more organised and its becoming more transparent as to the evolution. The front coming south across N England and N Wales is effectively going to merge with the southern frontal zone and will essentially develop into a curled occlusion type structure over the next 6 hrs. This rotating ENE in the South and drawing south across Wales, West Midlands to eventually become more ENE/WSW with time. Warmer air and assoc higher WBPT and WBFL's have been drawn NE ahead of the front - but away from the coasts the precip is heavy enough for snow to penetrate after a short while. Heavy Snow now occurring across Inland Hampshire and towards Surrey and Berkshire. This pushing NE towards London and the Home Counties this evening and tonight where the ECM and GFS now indicate the heaviest snow will occur. Matching Radar to Model expectations indicates the T+6 frame from the NAE is OK as is the ECM and GFS, therefore there is reasonable confidence in the forecast tonight. The front psuhing NE and also developing and revolving around to become more arc shaped overnight from Bristol to Oxford to the Chilterns to Sussex. Parts of CS England incl Dorset now look likely to miss most of the activity tonight, though we need to keep a careful eye on Radar as further bands develop and also exactly where the low pressure develops. Heaviest Snowfall around 20-30cm from Surrey, Berks into Bucks and the Chilterns, this includes the M4, M3, M40 corridors i highlighted this morning. During tomorrow the low retreats south and the band which forms and pushes into the M4 corridor will push SSE and at the same time, further convergence type activity will form over the Channel and push NW towards the South Coast, Models are keen to keep Snow going through much of tomorrow in Southern and CS England, though the EcM just seen is far less keen on this and prefers to fizzle the front out over Southern England without the frictional convergence zone boosting precip amounts. It would be interesting to see the new High Res 16KM ECWMF's take on this... Definitely a very noteworthy Snow event developing over Southern England with many areas seeing 5-10cm and some places seeing 20-30cm, Areas west of London seeing the highest totals most likely. More Snow comes into the East on Thursday assoc with another low. The Latest ECMWF keeps the cold weather going for at least the next 10 days and the UKMO GM is equally blocked right through to day 6. The GFS has a very different pressure pattern over the Western Atlantic which seems to impact things beyond day 5 The ECM has further heavy Snow at times over various parts of the UK right through the next 10 days... Tomorrow morning starts with the Snow across The Home Counties

I'm sure I just saw lightning to the south of me???

Surrey is now red on UKMO Warnings

About 24cm nr Woking, Surrey

It was supposedly fixed at 720z this morning, but is still on the blink :/

My mistake! The polar low is set to give grief to NI

The key is to watch where the polar low in the south forms, and that is how we'll forecast where will get snow/sleet/rain. Imho, ECM and UKMO have a better handle on it, but at such a late stage, there is significant wobbling within models and inter models to suggest this will go right to the wire.

+1.5ºc here now, but falling rapidly

Covering of 2mm or so here. Early hours of Sunday morning in London/Home Counties will be epic, UKMO Meso and GFS in agreement for reasonable snowfall, good 850mb temps and dp's.

Light snow grains just started here in E London

It's 3.7ºc here, and the dewpoint is 2ºc, so I think it'll be rain here when it arrives.

It was raining for at least 2 hours, my road was like a small river, when the snow came it settled on the water, even though the air temp was 2.8ºc

Most of the ice on the road, snow on the pavements, houses and grass has been washed off by the rain, I was enjoying watching all the fools wheelspin down my road!!