The second coldest air mass of the season is about to descend on northwest Indiana, along with lake effect snow. Associate Professor of Meteorology at Valparaiso University, Dr. Bart Wolf says the heaviest snow will develop this evening over southern Cook County, perhaps western Lake County and may sit there for four-to-six hours before migrating towards the east in the morning hours tomorrow. Dr. Wolf says once the system begins to move he doesn't anticipating it sitting in one spot again for very long, but widespread snow, four-to-six...maybe four-to-eight inches is possible, with higher amounts towards Chicago as opposed to northwest Indiana.
Dr.Wolf says temperatures will be in the low single-digits to near zero at night, with upper single digits to the mid teens during the day. He says more lake effect snow is a possibility Wednesday night and Thursday for northwest Indiana.
The National Weather Service has issued a Lake Effect Snow Warning from midnight through noon tomorrow for Lake County. A Lake Effect Snow Watch begins tomorrow morning through tomorrow afternoon for Porter, LaPorte and Starke Counties.