GFS/ECMWF ensembles show -6°C 850mb temps and single-digit dew points post-frontal for April 27. Strong radiational cooling will push lows into this range. Market underweights late-season polar advection. 90% YES — invalid if cloud cover exceeds 3/8.
GFS/ECMWF ensembles show -6°C 850mb temps and single-digit dew points post-frontal for April 27. Strong radiational cooling will push lows into this range. Market underweights late-season polar advection. 90% YES — invalid if cloud cover exceeds 3/8.