The National Weather Service (NWS) pushes out alerts to an Integrated Public Alert and Warning System (IPAWS) to sound alarms and warnings during major weather events. The critical service alerts are then pushed to commercial wireless carriers and broadcast to televisions and cell phones across the nation. Matthew Cappucci, a meteorologist at MyRadar, breaks down what some of the major weather alerts are and what they mean. | PBS NewsHour

Meteorologists at Weather Prediction Center and the National Weather Service are working around the clock to forecast the upcoming major winter storm. Be prepared and visit weather.gov for the most up-to-date winter forecasts. | NOAA NWS Weather Prediction Center