1/21 – Rob Knight’s “Dr. Martin Luther Jr. Day” Morning Forecast
Another day of below average temperatures and clear skies is expected today as a surface high continues to influence the region. Temperatures should be around 5 degrees below normal today with highs climbing into the middle to upper 50s. The surge in low level moisture and dew-points will also push overnight lows back to more normal readings in the 40s. Tomorrow will see the flow aloft turn more southwesterly, and as the atmosphere begins to destabilize, a few showers will develop by the afternoon hours. Temperatures will also continue to warm on the back of this deep layer onshore flow with highs climbing into the upper 60s.
A cold front will move through the forecast area Tuesday night through Wednesday night. Ample moisture will allow for a band of showers to form in advance of a cold front and then sweep across the entire forecast area during the day on Wednesday. At this time, it looks like instability values over most of the area will remain on the weaker side, and do not expect to see much in the way of thunderstorms over land. Rain chances should quickly come to an end from west to east Wednesday night as the cold front and associated trough axis move into Florida. Strong dry behind this system will bring clearing skies, lower humidity values, and cooler temperatures by late Wednesday night.
A reinforcing front should push through the area Thursday night into early Friday, but this front will be moisture starved as it moves through. At most, a few passing clouds are expected as the boundary pushes across the forecast area. Cold air advection will keep temperatures well below normal with highs in the lower to middle 50s both Thursday and Friday. Lows will cool into the 30s for most locations both Wednesday and Thursday nights. In the wake of the reinforcing front on Friday, temperatures should plunge into the middle to upper 20s for most areas Friday night.