[South East, London and East Anglia regional discussion - 8th February onwards]

1 minute ago, dallas said:

Radar has gone again 

Raintoday will most probably do the same in about 6 mins time

[South East, London and East Anglia regional discussion - 8th February onwards]

Snow has picked up again in Shirley, Croydon and temp has shot down to 0.5C ❄❄❄❄

[South East, London and East Anglia regional discussion - 8th February onwards]

1 minute ago, moogyboobles said:

Did something just happen to the radar?
I look away for five minutes and suddenly it's all clear in Essex!

Other radar outputs were also in the same boat 

[South East, London and East Anglia regional discussion - 8th February onwards]

Brighter in Croydon now with very light snowfall and temp is currently 1.3C

[South East, London and East Anglia regional discussion - 8th February onwards]

13 minutes ago, MAF said:

arghhhh! where has all the weather gone? 13:15 (NW) radar has no weather type over london at all 

Other radar outputs were also in the same boat

[South East, London and East Anglia regional discussion - 8th February onwards]

My grandchildren enjoying the snow in Croydon  ❄❄❄

[South East, London and East Anglia regional discussion - 8th February onwards]

Snowy Garden in Shirley, Croydon ❄❄❄

 

[South East, London and East Anglia regional discussion - 8th February onwards]

 

[South East, London and East Anglia regional discussion - 8th February onwards]

Time to get some sleep

[South East, London and East Anglia regional discussion - 8th February onwards]

Just now, snowbob said:

Looking at radar it is definitely back building now could be a good night for some in the streamer lines

Take a very close look at the Thames on the Netweather Radar. Incredible ❄❄❄❄

[South East, London and East Anglia regional discussion - 8th February onwards]

Snow is now heavier in Croydon ❄❄❄❄

[South East, London and East Anglia regional discussion - 8th February onwards]

ppn is really starting to kick in now. Many will wake up later on and go WOW ❄❄❄❄

[South East, London and East Anglia regional discussion - 8th February onwards]

Snowing again in Croydon ❄❄❄

[South East, London and East Anglia regional discussion - 8th February onwards]

 

[South East, London and East Anglia regional discussion - 8th February onwards]

20 minutes ago, Eastbourneguy said:

I'm struggling to understand this. You mean the 500 hPa temps are -28c? You want a large negative difference between the two and to be honest, you would use a lower down height than 500 hPa because no cloud top in winter will be that high. 

Obviously a colder 500 hPa level implies also cold lower down at 700 hPa ish, but not always!

Edit: The post on the next page with the Herstmonceux tephigram illustrates this perfectly, big chonky inversions. To be honest, it's probably why 850s have become so widely used in winter, because it's roughly where cloud tops from convective easterlies will be, so you can have a rough guide to instability. 

Both 500 & 850 hPa's at low temps -28C +/- will create instability allowing the ppn to perk up a lot more

[South East, London and East Anglia regional discussion - 8th February onwards]

25 minutes ago, WheresTheSnow said:

Hi Yamkin, by the S-SE, do you mean S-SE of London or the general Southern parts of the UK?

Hi, S/SE UK

[South East, London and East Anglia regional discussion - 8th February onwards]

The upper 850hPa temps are around -28C -/+ and coupled with the upper 500hPa around the same temp will create instability = heavier snow

500hPa is more favourable from 3pm for the areas S-SE

The following excerpts are courtesy of JP - John Pike

[South East, London and East Anglia regional discussion - 8th February onwards]

22 minutes ago, Snowman31 said:

When does the solar energy reduce enough do we think?

It's Early February and is below freezing with no sun after a frosty night and the snow still doesn't settle. That's why I love snow in December /January. 

In and around 3pm

[South East, London and East Anglia regional discussion - 8th February onwards]

9 minutes ago, SHM040519 said:

Snowing again in canterbury. Radar says it should be dry. 

I would suggest using the very good Netweather's radar. It will give you amazing ppn resolution and will also show you the previous, current  and in coming ppn within a specified time frame

[South East, London and East Anglia regional discussion - 8th February onwards]

44 minutes ago, throwoff said:

Always respected your input Yamkin, what do you see for North Kent for the rest of today into tomorrow?

Thanks for your kind comments  I am basing the following from GFS because they were spot on with the rain ppn on Saturday night into Sunday. It also pinpointed 7am for the sleet/snow to start kicking in.

More snow for Kent from the Streamer setup and a ppn source from the southern flank too which is interesting. As always, subject to change 

Also, @kold weather is the Thames Streamer forecaster king. 

[South East, London and East Anglia regional discussion - 8th February onwards]

1 hour ago, TSNWK said:

Appears that the Esturary is drying up now - provided a nice couple of hours this moring for the North of kent, into South London 

Greedy I know but why is it drying up at present I really felt it was starting up ? @kold weather and views on this please? you do seem to be our resident Streamer expert  and when might we expect any refiring of the streamers please? 

@kold weather Is the 'Streamer' forecaster king. You got the streamer forecasts spot on 

[South East, London and East Anglia regional discussion - 8th February onwards]

1 hour ago, D.V.R said:

Nothing on the radar for south London but's still snowing in Streatham 

Which radar are you using? I use various radars and one of the good ones is Netweather's radar. Their resolution is very good too especially pinpointing areas with snowfall and incoming snow 

[South East, London and East Anglia regional discussion - 8th February onwards]

1 hour ago, wellington boot said:

Did he? I remember putting this to him and he said conditions weren't right this time and he gave himself an almost 0% chance... Just saying...

There was a post he mentioned the possibilities of streamers with a ENE wind flow

[South East, London and East Anglia regional discussion - 8th February onwards]

1 hour ago, Great Plum said:

I’ve had a thought. I’m going to see how bad the met office app forecast is here for temperatures over the next week. Here’s the maximum temperatures it is forecasting today for this week:

08/02 predictions:

Monday: -2c
Tuesday: -1c
Wednesday: 1c
Thursday: 0c
Friday: 1c
Saturday: 4c
Sunday: 7c (!)

The MetO's mobile app is all over the place most times, but the BBC app was spot on for today's streamers which is a surprise 

[South East, London and East Anglia regional discussion - 8th February onwards]

4 minutes ago, kold weather said:

If the wind stays more ENE then you guys will probably need to watch for more general convection moving through Suffolk. The high resolution models do have some activity coming through regardless of any streamer stuff further south so I'd imagine there will be snow showers coming through.

Looks to me like today there is going to be a lot of constant light snow falling. Given temperatures should hold below 0c and dew points way below 0c even light stuff will settle and add up over time.

A few days ago, you mentioned the strong possibility of streamers setting up if the winds turned to a ENE flow. Well done for a brilliant observation