North West Regional Discussion 30 Jan 2019 onwards

[Iceaxecrampon]

15 minutes ago, frosty ground said:

A bit like reading your posts every hour or so.

It been a mild very wet winter and no amount of moaning will change that. 

The Troll awakes.

And you submit a post about moaning?

Poor Carl.

[Weather-history]

850hpas are useful guides but with the winter season of 2016-17, the odd thing was that snow seemed to occur when the 850hpas were less favourable during that winter. There was even snow flakes falling at above 0C 850hpa one day.

Wet snow falling on 18th November 2016 from showers and the 850hpas weren't even below -5C?! 

 

[SP1986]

8 minutes ago, Weather-history said:

850hpas are useful guides but with the winter season of 2016-17, the odd thing was that snow seemed to occur when the 850hpas were less favourable during that winter. There was even snow flakes falling at above 0C 850hpa one day.

Wet snow falling on 18th November 2016 from showers and the 850hpas weren't even below -5C?! 

 

Indeed, I've seen rain falling at -10C 850hPa but the winds were off the sea. The sea temperature is probably the reason overall. But then again maybe not. Must be also do do with temperatures and dewpoint at different layers in the air.. Perhaps a colder 950hPa can instigate some retention of snow if it is dry enough in that layer, especially if aided by steep lapse rates. 

Edited February 26, 2020 by SP1986

[Chris.R]

32 minutes ago, cheshire snow said:

A continuation of the same theme cannot  see any chance of snow tonight it's all to marginal DP of 0-1  more hail and sleet would be the form horse.

C.S

Winds will  be off-shore though, the precip  is frontal and Winds Will be light so evaporative cooling will come into play. Freezing level is a good 200 m lower than anything last night. I think it looks much better. 

[Iceaxecrampon]

Low looks Lower South though.

[severe snowstorm]

13 minutes ago, Iceaxecrampon said:

Low looks Lower South though.

Yes, ties in with weather warning just issued which is largely restricted to South Wales, South Mids and East Anglia.

[SP1986]

I love how that weather warning literally misses Wirral, and Liverpool

[Chris.R]

Chance  of last night delivering  was 10%, tonight I'd say 50%.

[WillinGlossop]

Light sleety drizzle 1c lovely.... hope tonight/tomorrow holds more joy....

[frosty ground]

8 minutes ago, Dexter said:

Yes, ties in with weather warning just issued which is largely restricted to South Wales, South Mids and East Anglia.

Is that not for the frontal stuff, the warning further north is based upon showers. 

[WillinGlossop]

1 minute ago, frosty ground said:

Is that not for the frontal stuff, the warning further north is based upon showers. 

Indeed.... currently polystyrene balls falling again.... 1c

[itsnowjoke]

3c here

[WillinGlossop]

Turned to snow....

[frosty ground]

6 minutes ago, WillinGlossop said:

Turned to snow....

It's an odd day....

[WillinGlossop]

3 minutes ago, frosty ground said:

It's an odd day....

For all of two minutes.... now back to drip drip drip....lovely 

[severe snowstorm]

14 minutes ago, frosty ground said:

Is that not for the frontal stuff, the warning further north is based upon showers. 

Correct, as was in reference to the position of the low which had been stated to be further South. 

[Chris.R]

it is dynamic precip and not showers according to Matt Hugo on twitter.

"A fine balancing act in terms of synoptic features tonight. Difficult to describe on twitter, but the low while bringing rain, sleet and snow in the south, potentially 'phases' with a area of vorticity further N, bringing a separate area of precip (snow risk) into NW Eng & Wales"

Edited February 26, 2020 by Chris.R

[carl1980]

Heavy hail shower this morning left a covering

[Iceaxecrampon]

Out with Terriers.

Sun is well warm when the wind drops.

[cheshire snow]

Both Manchester and Liverpool TAF showing snow tomorrow 0500-0900

Not convinced at all

C.S

[WillinGlossop]

4c polystyrene showers.... hills all white still above 400-450m

[WillinGlossop]

heavy snow 0c

1-2cm 

Edited February 26, 2020 by WillinGlossop

[SnowThunder]

4 hours ago, SP1986 said:

I love how that weather warning literally misses Wirral, and Liverpool

That's the norm though isn't it, it would be unusual if we on the coast actually got included

[Geordiesnow]

4 hours ago, Weather-history said:

850hpas are useful guides but with the winter season of 2016-17, the odd thing was that snow seemed to occur when the 850hpas were less favourable during that winter. There was even snow flakes falling at above 0C 850hpa one day.

Wet snow falling on 18th November 2016 from showers and the 850hpas weren't even below -5C?! 

 

I have to question that as if uppers were at 0 or above then its impossible for snow to fall as any snow from the cloud would melt into water, once a snowflake melts, it can't turn back to snow hence freezing rain events. In theory snow can fall at uppers of - 1 but this is pretty rare. 

I think some people not realising the upper air temperatures was only - 5 last night and only marginally lower today so with winds off the Irish Sea, I did not expect too much wintriness in all honesty. We had 2 light to moderate showers here today and they did threaten to turn wintry so no doubt if a proper heavy shower turned up, some Sleet or even snow could fall. I would not be surprised if that large shower cell in Cumbria is producing snow at lower levels.

 

 

[Iceaxecrampon]

31 minutes ago, SnowThunder said:

That's the norm though isn't it, it would be unusual if we on the coast actually got included

Beeb Graphic having non of it - LP looks far too S to have any effect up here - sweetspot looks to be the Midlands