Another snowstorm due overnight, radio coverage begins at 6 a.m.

A second round of heavy snow could redevelop tonight between 8 p.m. and midnight and leave anywhere from three to 12 inches of snow in southwestern Connecticut by 5 a.m. Friday, according forecasts.

HANRadio will be back on the air at WiltonBulletin.com and other Hersam Acorn network sites at 6 a.m. with live reports from across southwestern Connecticut.

The rain that has fallen much of this afternoon and evening could turn to moderate to heavy snow with snowfall rates of one to three inches per hour and “thunder” snow is possible. That would be a rare wintertime thunderstorm.

Another three to eight inches of snow overnight is likely, according to the weather service, which says the worst case is a foot of snow in the Lower Hudson Valley.

Along with the snow, winds of 15 to 25 mph with gusts up 40 mph are expected Friday morning.

More snow is expected closer to New York City. Wilton is in the 14-18 inch area for total snowfall between 10 p.m. Wednesday and 5 a.m. Friday. On Thursday, about eight inches of snow fell in Wilton.

The “placement of heavy snow band overnight will be critical to final snow amounts,” according to the National Weather Service.