The 18z anomalies today were interesting, classic low level cold push from the maritimes. Quite a difference from up at the summits above the inversion. The local summits see close to normal temperatures today, while the lower elevations below the inversion suffer.
Dense, low level cold air going under the warm/moist air to the west. Boundary being the focus for lift and rounds of convection to the west, dying as it moves into more stable air.
H85 Temp Anomaly.
2-Meter Temp Anomaly.