What did we do before Doppler radar? How did we ever know when it was raining? Having said that, many of us are expecting another round of storms today, and I’m sure at some point our eyes will be stuck to red and orange and purple squiggles on a map while a television meteorologist divines for us “rotation” and “supercells” and, worst of all, “debris balls.” It has replaced weekend sports broadcasts in many parts of the country. It seems as if it’s always a weekend, lately.