ECMWF 500mb height anomalies show a persistent trough. Arctic advection behind a cold front drives surface temps down. GFS ensemble mean projects 51°F max high. Overwhelming 'yes'. 90% YES — invalid if 850mb temps unexpectedly spike due to ridge.
ECMWF 500mb height anomalies show a persistent trough. Arctic advection behind a cold front drives surface temps down. GFS ensemble mean projects 51°F max high. Overwhelming 'yes'. 90% YES — invalid if 850mb temps unexpectedly spike due to ridge.