Amendments have been made by IF
Latest UKMO assessment as follows:
- Current warming episode still expected to be minor
- Mixed model signals re SFC story early-mid Feb, but current preferred outcome is for (at least passing) colder phases from later next week and more especially during 2nd week Feb (longevity uncertain) with pattern amplified behind lows and ridging in Atlantic (as per EC Monthly & GloSea5)
- Phases of colder Am episodes expected. Given potential passage of low-latitude systems towards S'rn UK in 00z EPS, snow risk may not be confined just to N'rn UK
- Stratospheric diagnostics indicate resumption of stronger zonal flow *for a time* from mid into 2nd half Feb
- A more mobile/unsettled outcome *may* then return for UK (EC Monthly also suggests W'ly return later Feb)
- However, 00z data is also suggestive of generally colder, more anticyclonic conditions later Feb: JURY OUT
- GloSea5 continues - as before - to signal any more definite/major stratospheric warming is most likely late Feb-early March
Originally Posted by: Gooner