ECM 00z ensemble suite for London

The milder cluster that was showing for the early days of the New Year has gone. That was the cluster in which the GFS Op had been sitting. So, good agreement now on progressively colder conditions until 5th. That's the point at which a less cold cluster develops. From Day 9 one cluster offering cold/very cold and another offering average temperatures are in reasonable balance: I think we will need to wait to see which evolution becomes more likely over the coming few days.
Originally Posted by: Gandalf The White