@CNN: Lake-effect snow has been in the news lately, thanks to massive snowfall that blanketed Erie, Pennsylvania. Here’s a look at what it is, and how it happens https://t.co/BK7yuv3zFT https://t.co/lh0yqpSkO7

@CNN: Lake-effect snow has been in the news lately, thanks to massive snowfall that blanketed Erie, Pennsylvania. Here’s a look at what it is, and how it happens https://t.co/BK7yuv3zFT https://t.co/lh0yqpSkO7