fergie on NW
Yes. However, despite currently strong EC and MOGREPS signals for cold to relent by end of next week, this still has to be accepted with due caution, with further trough disruption(s) to E still possible to complicate matters and prolong cold weather. That said, it must be noted that - above caveat aside - 00z EC plumes do point with greater consensus towards a clear departure from cold conditions past Friday. Rising GPH remains strongly indicated as high pressure moves in from W; but prior to that, a messy and probably snowy transition (for some). Cold nights still very likely once ridge established, despite moderation in daytime chill.
Signs thereafter, including in UKMO long range model output, broadly suggest that into mid-Feb we will see a phase when a stronger jet will become displaced to a more northerly position, with stronger zonality (and lower GPH) to N of UK and better chance of stronger ridging and thus more benign weather to the south.
Underpinning it all through medium range remains weak teleconnective drivers: MJO not expected to be influential; no signs of any SSW in near future; weak or very indecisive El Nino.
Originally Posted by: sizzle