GFS indicates robust 500mb troughing. Arctic advection behind a departing cyclonic system dictates a brutal surface temperature anomaly, with highs struggling to exceed 44°F. ECMWF aligns. 90% YES — invalid if mid-level ridge builds prematurely.
GFS indicates robust 500mb troughing. Arctic advection behind a departing cyclonic system dictates a brutal surface temperature anomaly, with highs struggling to exceed 44°F. ECMWF aligns. 90% YES — invalid if mid-level ridge builds prematurely.