Point taken about how meaningful it is to extrapolate high altitude surface pressures to sea level. Nonetheless it does look as though actual pressure measurements will be very high - currently 1048 mb and rising at 2mb per 3 hours. Not sure what the record high for Greenland is but Saturday-Sunday could surely get close.
https://www.weatheronline.co.uk/weather/maps/current?LANG=en&SI=mph&CEL=C&WMO=04211&TIME=std&CONT=euro&R=310&LEVEL=140®ION=0004&LAND=__&ART=luftdruck&NOREGION=0&PLZ=&PLZN=&SORT=__&TEMP=___&WETTER=__&&TYP=__&SEITE=0