Some light snow may start at about 7:00 p.m. Friday, but heavier snow falling at a rate up to one inch per hour, is expected after midnight Friday. Rockford residents are expected to see the heavy snow arriving between 11:00 p.m. Friday and 1:00 am. Saturday. The entire snow period is expected to last 15 to 18 hours into Saturday, including Lake Effect Snow at the end of the snow system event. Temperatures are expected to rise to about 31°F at 9:00 p.m. and hold about 30°F until about midnight — followed by a low of 26°F to 28°F. Winds are forecast to be light overnight.
Radar shows the most advanced snow precipitation image at the Mississippi River at 9:00 a.m. Friday.
National Weather Service Forecast as of 9:00 a.m. Friday, December 03, 2010
Today: A 20 percent chance of snow after 5pm. Partly sunny, with a high near 31. North northwest wind around 5 mph becoming calm.
Tonight: Snow, mainly after 9pm. Low around 26. Calm wind becoming south around 5 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Saturday: Snow. High near 32. Calm wind becoming north northwest between 10 and 15 mph. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Saturday Night: A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 18. North northwest wind around 15 mph, with gusts as high as 25 mph.
Sunday: Mostly sunny, with a high near 24. Northwest wind around 15 mph, with gusts as high as 25 mph.
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