9/12 – Brittany’s “Cooler” Monday Evening Forecast

As a cold front makes its way through the area this evening, we can expect the lowest overnight lows we’ve seen all summer. Temperatures will bottom out in the mid to upper 60’s with lower relative humidity values as we’re out the door tomorrow morning. Surface ridging will build in behind it which will allow for efficient radiational cooling to take place. Areas in south Mississippi could see low temperatures tonight around 10 degrees below normal. High temperatures on Tuesday will likely be at or just below normal. The low tempertures for Tuesday night will be just as cool as tonight, if not cooler, as high pressure continues to build in. Skies will be clear with nearly calm winds which will be a better setup for radiational cooling tomorrow night.

Wednesday through Sunday night, upper level ridging coupled with high pressure at the surface over the southeast US will keep the beginning of the extended dry. Temperatures, overall, will begin to rebound to normal values for the extended. By the end of the week, there may be some weakness in the ridging which would allow for some return of precipitation chances, particularly for southern and coastal sections of the area during the weekend timeframe. There is some uncertainty with this so will keep PoPs in the chance range at this time.