After Thursday's high of near 70 degrees, temperatures aren't expected to climb out out of the 40s and 50s in Gulfport for the next seven days.
A flash freeze occurs when there's a rapid drop in temperature, causing a quick freeze of water already on the ground such as from rain or melted snow.
As of 8 a.m., it was 56 degrees at O'Hare International Airport, and the National Weather Service said it could reach 62 before temperatures plummet. Winona could see as much as 3 or 4 inches of snow.
A big concern is that temperatures in north and parts of central Alabama will be very cold when the precipitation gets here, and the weather service said it will be "more than cold enough for significant impacts to roadways".
Friday, widespread, steady rain takes over as temperatures gradually fall from the 50s and 40s into this afternoon with a south wind gusting up to 30 miles per hour.
Saturday night's low will be around 4 degrees, with similar windchill values to Friday night. Mostly cloudy, with a low around 17.
SUNDAY: Mostly sunny, cold.
Rain drenched Marion County beginning around 5 a.m. Friday before turning to sleet and freezing rain by 1 p.m., with snow expected that evening and overnight.
Welcome back to winter. Next chance for snow?
Wednesday night: Partly cloudy, with a low around 16.
Forecasts are calling for highs in the teens and lows in the single digits again. There's nearly no doubt we're going to have some street and basement flooding.
Saturday morning-afternoon: Temperatures drop quickly and standing water freezes quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS. A Flood Watch means there is a potential for flooding.
Nights will dip into the 20s and low 30s, which means cold weather shelters will open across South Mississippi. Chance of precipitation is 50 percent.
In addition, another shot of cooler air is coming in from the North with winds going 10 to 20 miles per hour during the day on Saturday, he said.
WEDNESDAY: Partly sunny, with a high near 25.