UpdateFebruary 21st, 2013 at 4:23 pm by Chad Evans under Chad's WLFI Weather Blog
Temperatures are running 27-30 degrees across the viewing area with snow & sleet approaching. Leading edge is virga or precipitation that is not reaching the ground. However, it goes from virga to moderate to heavy snow & perhaps some sleet rapidly with heavier initial band. Visibility drops from 10 miles to 0.25 mile at the onset. Be prepared for sudden significant decrease in visibility.
Actual snow/sleet hitting the ground is about 23 miles from Covington & 53 miles from Lafayette & is moving northeast at around 30 miles per hour.
1-3″ of snow & sleet still looks good with 0.10″ of glaze ice & wind gusts up to 38 mph tonight still looks good. “Fair game after 5p” still looks good for southwest counties with snow/sleet coming into Lafayette closer to 7. The entire viewing area will be covered in solid snow, sleet & freezing rain by midnight. I still would not rule out a rumble or two of thunder, given the dynamics, forcing & strong low-level jet of +55 mph. Bits of 50-100 J/kg of elevated CAPE are seen in soundings, which (given forcing) is good for static in the colder, higher cloud tops & a thunder rumble.