It looks pretty certain now that another measurable snowfall will occur in Acadiana. Winter Weather Advisories are posted for most of Acadiana starting this evening and lasting overnight. Cloudy skies will remain in place today keeping our temperatures at 50 or lower for highs today. Rain will start later this afternoon and should cover most of Acadiana by the end of the afternoon commute. The cold rain will change over to snow over Central Louisiana and northern parts of Acadiana during the evening hours, then change over to snow for the I-10 corridor before midnight. Snow may mix in with rain over southern sections of Acadiana prior to sunrise Wednesday. The winter weather advisory will cover Allen, Evangeline, St. Landry, Jeff Davis, Acadia, Lafayette, and St. Martin.
Accumulations will be possible mainly on rooftops, cars, and grassy surfaces. Areas where heavy snowfall occurs may see some slushy accumulation on roadways, especially elevated surfaces. Most of the area will remain above the freezing point overnight with the exception of the extreme northern parts of Allen, Evangeline, and St. Landry parishes and areas of central Louisiana, where the temperature may drop to 31 or 32 for about a 3 hour period around sunrise. Those areas may experience some brief freezing of bridges and overpasses. Otherwise roadways and bridges should remain wet, but not frozen.
As far as accumulations, expect up to 2″ of snowfall to pile up north of US 190. Up to 1″ of accumulation may occur in areas between I-10 and US 190. Areas south of I-10 will see less than 1 inch of accumulation, and the region not included in the winter weather advisory will see some snow mixed with rain, but little or no accumulation is expected.
Most of the rain and/or snow will diminish during the mid morning hours. Sunshine should return by midday and temperatures will climb into the lower 50s for highs. Below normal temperatures are expected to continue through the week and the weekend.
StormTeam3 Meteorologist Dave Baker
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