Winter Storm Warning – Expected Timeline In Acadiana [Updated]
Yesterday afternoon a cold front pushed into and through Acadiana. A wind advisory has been posted for the area due to the strong north wind that is expected to usher in colder temperatures for Acadiana. A strong upper level low pressure system currently pushing through Texas is expected to make its way to the east today. This system will lift moisture from the Gulf of Mexico over the State of Louisiana and will most likely cause a significant weather situation for the next 24 to 48 hours. Therefore a Winter Storm Warning has been posted for the area.
Here is the basic timeline of what kind of conditions we can expect in the area over the next two days. Please note these times are based on current forecast models and are subject change significantly. You are encouraged not to travel until it has been deemed safe for you to do so by State and Local authorities.
Tuesday Morning - This is when the wintry mix of precipitation is expected to move in to Acadiana from the west. Temperatures will be at or below the freezing mark after 6am. Light rain will move through the area and as it falls into the sub freezing air might take the form of freezing rain or sleet. This is when bridges and over passes will start to become hazardous to travelers.
Midday Tuesday - Much of the area will be experiencing subfreezing temperatures. The upper level system will begin pushing abundant moisture over the lower part of the state. This moisture will most likely fall in the form of freezing rain or sleet. Ice accumulation of 0.2 to 0.4 inches is expected with locally higher amounts. Little or no snow accumulation is expected. This coating of ice could make bridges and overpasses impassable and cause some power outages.
Tuesday Night - Precipitation will begin to decrease in coverage but there is still a potential for additional sleet, freezing rain and some snow. After midnight drier air will move in to the area. The overnight temperatures Tuesday night into Wednesday morning will be near 20 degrees by Wednesday morning. What ever precipitation that has fallen by this time will still be causing problems early Wednesday.
Wednesday Morning - Temperatures will start well below freezing and eventually warm to the upper 30's by afternoon. The rising temperatures and radiant heat energy from the daytime sunshine will aid in melting some of the roadways affected by the ice and snow accumulations. Many bridges and over passes will still be deemed impassable to motorist despite the above freezing temperatures.