Cold Spell Forecasts and Synoptic Forecast Discussion - 26/11/1020 onwards

Kippure wrote: »

We are in for a pasting here on the east coast over the next couple of days, according to the 12z Gfs run. Direct easterlies, plenty of snow thunder lightening etc to come in off the irish sea.

when are we to expect the winds to change Kippure?

darkman2 wrote: »

Winds should switch easterly just before midnight. Then everything is straight on to the East coast. The LP off the Northeast coast of England is what is coming here. Winds are already Easterly there.

Just been out and about - some pretty dodgy pavements out there.

cheers darkman2,yeah was out earlier myself & side roads were like glass,goina be a dangerous night for driving

12Z ECM out to 120 hours. Keepin it cold.


And 144 hours...

And a week from today, ECM still has -6 to -8 uppers over us

Nacho how many inches of snow is there at you now alltogether?
See RTE Said there was 4 inches in Killkenny yet one of our posters showed us 8 inches
Snow measurments are much more reliable on Boards.

Deleted User wrote: »

Theres a good 8 inches in and around north wexford too south of Gorey but not a word.
Met Éireann mainly use ecm and hirlam.
So the 18z gfs will not influence them too much I think.

BB,whats still to come tonight? Ive to get to Oulart & back tomorrow.. whats the chances looking like ?

Anything for Navan tonight?

Deleted User wrote: »

yikes roads around and down to oulart will be very icy in the morning and evening,they should have had a fair bit of snow lying down there.
Hirlam says lots of snow showers in similar vein to last night after midnight tonight along the east coast so you could potentially meet a lot of snow on any random stretch from Bray down.
The m11/n11 will be gritted but all other secondary routes are just ignored so lethal at times.
Even the gritted M11 Arklow and Gorey bypass during the snow last night was treacherous.

Be safer to leave them there me thinks .... Kiddies are in nan's for weekend

The low over the northeast coast of England is drifting west under an upper low and should begin to track more WSW after midnight, but I expect this feature to lose definition over England before trying to redevelop well after midnight over the Irish Sea. This means that any snow before late morning in eastern counties would have to come from unrelated streamers developing over the Irish Sea. This may happen but with such a slack wind gradient and cold temperatures inland due to earlier snow cover, meso-scale winds around Dublin are likely to remain W-NW with the streamers being forced more south towards Wicklow (again). However some other weak snow flurries could develop further north and move inland anywhere along the east coast.

Would expect then a few areas of snow to develop later tonight but more likely to be in Wicklow (as well as much further west). Inland temperatures could fall as low as -8 to -10 C over snow cover. By late morning and through mid-day Sunday, areas of snow may develop in response to the upper low drifting west across Ireland. With any luck (if you're a snow lover and if not, sorry, wrong thread) some of this snow may become moderately heavy in places -- there would be potential for 5-8 cms in some areas.

Looking further ahead, nothing but east winds and at times a bit of a southeast component that may get even places like Cork into the action, but favouring Meath-Dublin-Wicklow region in general. There is really no reliable sign of a warmup at all, the models are behaving as they normally do in a prolonged cold spell. There is such a deep supply of cold air in the European arctic and in central Siberia that as long as the Atlantic sector does not undergo a total reversal of form, I believe the pattern will remain cold with just the odd near-normal respite from a weak system dropping south and turning the winds more NW'ly.