Can anyone explain what is driving such an off-the-scale Greenland high in GFS models on Saturday night. The contours are so close together it’s difficult to read them but it looks like pressure could reach 1110 - which I think is beyond all previous records.
what is going on? Is model wrong? Is there something exceptional happening?
https://max.nwstatic.co.uk/gfsimages/gfs.20210402/12/39/h850t850eu.png