Northwest Weather Discussion

[captaincroc]

4 minutes ago, Chris.R said:

I'm expecting an update about 11:15 with the 6Z. With the last update you need another 10– 20 miles nudge south to stop you getting ice pellets and rain mix in the late afternoon, if there's any precip by then.

Cheers for that. That was my assumption too.

I think we just need a shift south to keep us in the cold and keep the precipitation over us too.  Weirdly the snow is dryer now than it was first thing this morning. Evaporative cooling must be lowering the temps.

[Backtrack]

Disappointment written all over this event isn’t there. Flakes are tiny now, lost all the intensity, still isn’t sticking properly. Temp on the rise. 1.1C

[Alexis]

As we saw in January 2021, it can settle on unfrozen sodden ground no problem if the flakes become big and heavy enough. It can snow for hours and not stick and then suddenly they'll be a tipping point and from then on it's game on.

[Taylorthesnowman]

1 minute ago, Backtrack said:

Disappointment written all over this event isn’t there. Flakes are tiny now, lost all the intensity, still isn’t sticking properly. Temp on the rise. 1.1C

Quite surprised by that as it's sticking here in south liverpool.intensity drops off and it's small flakes then five minutes later we get a burst of heavier stuff

[itsnowjoke]

Tiny flakes slight covering on car but not sticking anywhere else to wet

[I Cumbria Marra I]

No snow here yet, i'll be so dissapointed if we dont see any snow considering the charts from a couple days ago, we havent had a covering in donkeys years, barely even a dusting.

[Had Worse]

Size and rate picking up here.

Roads still ok apart from Woodhead Road that runs near @WillinGlossop and on to Crowden. Thats now shut.

[Alexis]

Heavy sticking snow at 150m if you're in the Midlands, so hopefully conditions will transfer north and at lower elevations.

[Backtrack]

2 minutes ago, Taylorthesnowman said:

Quite surprised by that as it's sticking here in south liverpool.intensity drops off and it's small flakes then five minutes later we get a burst of heavier stuff

Yeah it’s coming down again now. Flakes are still tiny until more moisture is introduced later. But as that’s introduced, it becomes more marginal. Can’t see us getting more than a dusting on grass & other favourable surfaces. 200m+ event I think. 

[Miamay]

16 minutes ago, Day 10 said:

Everything white except roads and pavements, just as it was starting to stick on them the intensity has died down.

Same here

[Mark_p]

It’s actually proper snow in ormskirk now which is lovely to see falling, still only a bit of accumulation on grass though. Interesting to see how it all plays out throughout the day and into the night.

[Geordiesnow]

Clearly ground temperatures are an issue and with things set to become more marginal this afternoon then I can see why the Met are saying barely anything at lower levels, looks to be a good call so far.

Meanwhile here, we need something to fall to make the ground damp, the dry air is certainly making its presence felt.

 

 

[Weather-history]

5 minutes ago, Alexis said:

As we saw in January 2021, it can settle on unfrozen sodden ground no problem if the flakes become big and heavy enough. It can snow for hours and not stick and then suddenly they'll be a tipping point and from then on it's game on.

That's true but we are facing an unseen factor that is never commented on. Infrared radiation. That's stronger in early March than in January and that does affect snow accumulations for early and late season snowfalls.

[WillinGlossop]

3 minutes ago, Had Worse said:

Size and rate picking up here.

Roads still ok apart from Woodhead Road that runs near @WillinGlossop and on to Crowden. Thats now shut.

Some bigger flakes…Moderate to heavy snow… accumulating well on some surfaces… roads ok atm… this afternoon/evening will be different matter… 

[Had Worse]

Just now, WillinGlossop said:

Some bigger flakes…Moderate to heavy snow… accumulating well on some surfaces… roads ok atm… this afternoon/evening will be different matter… 

My lad is going to the Utd game tonight.  Whilst conditions might be ok to play there,  some supporters might have a challenge getting back to higher parts.

[PsychedelicTony]

18 minutes ago, Weather-history said:

That's amazing because if you look at the Llandudno livestream at the pier area, no lying snow

http://www.youtube.com/watch?v=V5Rrv0zS5G0

Ive got 150m elevation on Great Orme

[Chris.R]

As long as this intensity keeps up there won't be any marginality at the surface at all all day. The only marginality is above 800 m south of Chester later in the afternoon. As temperatures increase in this layer towards 0 through the morning flakes will get bigger so expect quicker accumulation later in the morning. That's how I'm reading it.

[Kasim Awan]

1 minute ago, WillinGlossop said:

Some bigger flakes…Moderate to heavy snow… accumulating well on some surfaces… roads ok atm… this afternoon/evening will be different matter… 

Looks light to me.

[Kasim Awan]

On way back.

[frosty ground]

1 minute ago, Chris.R said:

As long as this intensity keeps up there won't be any marginality at the surface at all all day. The only marginality is above 800 m south of Chester later in the afternoon. As temperatures increase in this layer towards 0 through the morning flakes will get bigger so expect quicker accumulation later in the morning. That's how I'm reading it.

Interesting stuff Chris so an increase in temps at higher levels increases the moisture and intensity. Am I reading that right?

[Chris.R]

As long as it stays this overcast with the ceiling so low and the precipitation remains then evaporative cooling should offset any solar radiation

[Joe Bloggs]

At face value , not a classic snow shadow in effect currently, although as Kasim has said it could well kick in later, currently wind is only 7mph from the east. 
 

Light to moderate snow in Manchester all morning so far. Note that the MetO app said completely dry so it appears UKV has overplayed the shield effect. 

Sadly we have puddles rather than lying snow but it is great to see moderate snow falling. 
 

 

[pip22]

Bigger flakes here now

[Weather-history]

Just now, PsychedelicTony said:

Ive got 150m elevation on Great Orme

I visited Llandudno many times and I've always wondered if there has ever been lying snow where that row of houses are on the road going up to the Orme and nothing right on the promenade

[frosty ground]

Just now, Chris.R said:

As long as it stays this overcast with the ceiling so low and the precipitation remains then evaporative cooling should offset any solar radiation

Very bright here even with the snizzel falling which has got heavier.

temps below zero but any surface that warms slightly in the sun is stopping any settling snow.

grass is okay thou