This complicated coastal storm setup is going to be mainly a rainmaker for New Jersey, although some wintry impacts are possible Thursday into Friday too.
For most, Sunday's storm system will be "snow big deal" — although light snow accumulations are likely for the northern third of New Jersey into Monday morning.
It's going to feel mighty December-ish around New Jersey through the middle of the month; and yes, cold air is the first important ingredient for snowy weather.
Snow season in New Jersey lasts from October through April. Winter storms pose both serious impacts for commuters, and enormous challenges for meteorologists.