John Hall wrote in
:

....or does the added resolution of the operational run add something
the control/ensembles don't see in its horizontal (and more
importantly vertical) resolution?

Possibly, as the 12Z operational; runs is very similar.

I'm now very, very interested. Not necessarily in the evolution but why on
earth the operational run has stuck to its guns. Look forward to seeing
what the ensembles say: have some come into line?

Richard