Wales - Regional Weather Discussion

[Wales123098]

Looking at the radar the precip seems to be clearing Cardiff:S?

[swales]

Judging by the radar the precip, falling as rain at the moment, is moving away and we don't have long left so I think that's that for here! Oh well, at least I can get to work without any fuss tomorrow

Good night, hope some of you see snow.

Yep. 2.9c here now. My fear is precipitation now... not temps haha.

Also, we might have to battle icy roads on the way to work... depending on how low the temp gets.

Good night CarmsSnow

[thetipster]

its the area of ppn west were watching

[mikeocarroll]

Radar shows snow over me now. Not quite there yet but increasingly sleety. 1.6c.

[Wales123098]

Pressure starting to rise here now suggesting the low is indeed moving off. Temperture is really bugging me not moving.

[TonyH]

Moderate sleet here and expect to wake up to a covering of snow.

Edited December 15, 2011 by TonyH

[Snowmadsam]

Sleety here now too...Temp 1.5c

Edited December 15, 2011 by Snowmadsam

[georgiedre]

What do you lot think with the fact there is no precipitation falling from that precipitation over nw wales?

[Daniel Miller]

Wow. All I've had is v.v.v light rain all night. Stick my arm out the window and it feels like I have slight pins and needles. Doesn't seem like I'm going to get anything close to a cm even

[TonyH]

It's south of Caernarfon though.

Precipitation increasing to our nw so game on! Also over much of Wales its intensified recentlly.

[georgiedre]

No ! Look at raintoday and met office. It shows it over some of anglesey too but theres nothing at all!

[kold weather]

Pressure starting to rise here now suggesting the low is indeed moving off. Temperture is really bugging me not moving.

Looking at the models I think Cardiff will struggle, temp profiles seem to be held up a little for you guys and doesn't really drop away till the very back-end of the frontal system.

[jo200199]

After looking in a few threads and seeing some charts people have posted, I'm not holding my breath :-( May as well hit the hay, maybe I'll be pleasently supprised come dawn? Happy lampost watching all, nyt nyt :-)

[Gorath]

Jackone... As I live in caernarfon nw wales I can confirm that there is no precipitation falling from that on the radar! Well gutted!

What do you lot think with the fact there is no precipitation falling from that precipitation over nw wales?

Definitely nothing here. I'm slightly more inland than Caernarfon, right under supposedly heavy precipitation according to the radar. However, it's not just "not raining", I can see the stars, dammit!

[mikeocarroll]

Still a sleety mix here, hail, wet snow, rain, graupel. Low dp though (-0.8c) so fine slushy layer going down. Temp is 1.3c now, has dropped steadily over the last hour.

[TonyH]

No ! Look at raintoday and met office. It shows it over some of anglesey too but theres nothing at all!

Very little over anglesey or the n Wales coast on net weather radar.

[pyrotech]

The centre of the low is probably clipping cardiff right now, Now the centre will retain its warmth ie warm sector and so temperature may rise in places as it tracks East, as the low moves East then the percipitation will turn more wintry. Cardiff it self may be borderline but with heavy percipitation that will change, so as the low clears eastwards we need the percipitation to become intense to allow Evaporative cooling of the air. Expect to start seeing snow proper from now on North and slightly west of Cardiff, moving South and East as we move towards Dawn

[Wales123098]

Temperture starting to take a tumble.

[Gorath]

Very little over anglesey or the n Wales coast on net weather radar.

MetO RADAR is showing almost all of Wales being rained on.

Something's not tallying up.

Attached is their RADAR for half ten tonight. We saw absolutely nothing like that. (image courtesy of the Met Office, obviously)

Most curious.

Edited December 15, 2011 by Gorath

[georgiedre]

Its very annoying isnt it gorath

Definitely nothing here. I'm slightly more inland than Caernarfon, right under supposedly heavy precipitation according to the radar. However, it's not just "not raining", I can see the stars, dammit!

[pyrotech]

You also find the radar does this with snow more than rain, i expect its picking up is the snow forming in the air which will reflect the radar signal and hopefully when the air can no longer hold its weight we will see snow falling. I am not a radar expert at all, but this seems to be a common observation every winter. I just think the ice crystals in the low cloud reflect back giving interpretation that its falling percipitation.

[Marcus_surfer]

That PPN in the irish sea is starting to get a move on...pushing southeastwards...this is a very slow process tonight, but things starting to take shape now, looks like more heavier PPN possible by dawn for much of wales, which by then the temperatures would be close to freezing. Temperature 2.5C here now. I could be wrong but lets see what happens.

Edit...also behind that band of rain/snow in southern ireland, temps at -3 in centre of ireland now

Edited December 15, 2011 by Marcus_surfer

[kold weather]

Nice area of precip now Wales, looks like the NMM has under-estimated the amount of precip that is being left behind by the front. All good news for Welsh chances of snow in the next hour or two. I think snow reports should become much more frequant from now on.

[pyrotech]

You also find the radar does this with snow more than rain, i expect its picking up is the snow forming in the air which will reflect the radar signal and hopefully when the air can no longer hold its weight we will see snow falling. I am not a radar expert at all, but this seems to be a common observation every winter. I just think the ice crystals in the low cloud reflect back giving interpretation that its falling percipitation. I know Jackone has alot of information on Snow so perhaps he or TonyH can explain the phenomnen of phatom radar

[Gorath]

You also find the radar does this with snow more than rain, i expect its picking up is the snow forming in the air which will reflect the radar signal and hopefully when the air can no longer hold its weight we will see snow falling. I am not a radar expert at all, but this seems to be a common observation every winter. I just think the ice crystals in the low cloud reflect back giving interpretation that its falling percipitation.

Ah, now THAT would make sense, yes. Good call.

Nice area of precip now Wales, looks like the NMM has under-estimated the amount of precip that is being left behind by the front. All good news for Welsh chances of snow in the next hour or two. I think snow reports should become much more frequant from now on.

What precipitation? There's nothing falling!