12/21 – Rob Knight’s Friday Morning “CLEARING” Forecast
The backside of the rain shield has moved east of the area as the cloud coverage will continue. Satellite imagery shows most of the low level clouds exiting quickly with a cirrus deck still coming in from the north. This pattern will persist through much of the day before skies clear late this afternoon into the evening hours. Moderate cold air advection will keep temperatures down again today…5 to 10 degrees below normal.
Surface high pressure will move in nearly overhead tonight which will finally break down the wind field. At the same time, clear skies will allow from strong radiational cooling. This combo of calm winds and clear skies will allow temperatures to fall down into the lower to mid-30s Saturday morning. Isolated locations in southwest Mississippi and inland may even touch the freezing mark.
The return flow will be Saturday afternoon and will cause daytime temps to soar back into the 60s this weekend.
Think warm jacket at sunrise and T-shirt by early afternoon.
The next system to impact the area will be a weak trough of low pressure which will swing across the country. I have added the slight possibility for rain Sunday and even on Christmas Eve. Temps may fall back a few degrees if the cold front associated with the trough makes it to the Gulf of Mexico. A quick change over to return flow by Christmas Day means isolated to scattered showers could develop ahead of the next approaching system Wednesday.