Posted: Dec 23, 2013 5:56 AM by Meteorologist Josh Eachus
Updated: Dec 23, 2013 5:56 AM
24 hours ago, cloud cover was draped across the region, strong storms were pushing eastward and thermometers were running 15-20° above average. We now have a cold front slowly crossing the Gulf States and moving farther away from Southeastern Louisiana. With that system crawling eastward, and a high pressure system dropping south from the Great Plains, we'll have a slow break up of local cloud cover with some sunshine gradually returning. The other big sensible change is in the temperatures. Your Monday Morning started off about 20° cooler than did Sunday Morning and that difference will hold through Christmas Day.
Given the weather setup with high pressure taking control, look for clearing skies today with highs in the middle 50s. Tonight, conditions will be ideal for radiational cooling. In other words, much of the daytime heat absorbed by earth will readily escape into the atmosphere. With clear skies and light winds, thermometers are set to drop below freezing as we bottom out in the lower 30s and upper 20s. On Christmas Eve, after a chilly start, skies will remain clear with abundant sunshine and high temperatures in the lower and middle 50s. Once again, a very cold night can be expected Christmas Eve into Christmas Morning. Santa will be thankful he has that big red coat as a hard freeze is likely with lows in the upper 20s. A similar forecast is in play for Christmas Day. Have the hot cocoa ready to go as you wake up to that cold. The afternoon will find sunshine and highs in the middle 50s.