A strong cold front will move through the area on Tuesday and usher in the coldest air of the season.
Moisture ahead and along the front will push east across the forecast area Monday night into early Tuesday. Cold temperatures will quickly filter in behind the front.
There is some potential for rain/snow mix or change over to snow Tuesday morning. This would mainly be across Southwest Mississippi, interior coastal Mississippi and the east central Louisiana. Accumulation less than inch is possible across southwest Mississippi Tuesday morning and accumulation on elevated objects.
A wintry mix is possible from Baton Rouge to Washington parish Tuesday morning. Snow accumulation less than 1″ is possible mainly over parts of Walthall county, northern Pearl River county, northern Tangipahoa and Washington parishes and accumulation on elevated objects is possible.
While accumulating snow is not likely in south of Lake Pontchartrain or coastal Mississippi, rain could mix with or briefly change over to snow flurries Tuesday morning before ending yielding no impacts.
Brisk north winds along with cold temperatures will maintain wind chill values in the 20s all day on Tuesday. The coldest temperatures will be Tuesday night/Wednesday morning.
Currently the forecast calls for freezing or near-freezing temperatures for all locations except the immediate coastal areas of southeast Louisiana. Temperatures in the low to mid 20s are currently forecast across Southwest Mississippi and adjacent Louisiana parishes.