Big change on GFS 12Z
But, yes, very different to yesterday's 12UTC... because that was an enormous outlier! It was interesting that for Germany, for example, nearly all the GFS ensemble members in the 00UTC GFS today were below even the coldest members of the 12UTC GFS ensembles yesterday. You don't often see such a huge change in ensembles at such short lead time. ECMWF has been somewhat steadier.
Stephen.
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