Meteorologists in Miami, it is fair to say, are accustomed to drama: sunny-day flooding, severe rainstorms, strong hurricanes.

So it is telling — and scary — that they seem at a loss for words to describe the extreme heat that the city experienced over the past few days, a full month ahead of summer.

“It’s completely crazy, what just happened,” Brian McNoldy, a senior research scientist at the University of Miami, said.

“It’s insane,” said John Morales, a meteorologist for ClimaData, a private weather forecasting and consulting firm, and a hurricane specialist at WTVJ-TV, the NBC station in Miami. “Not only is it insane, it is also dangerous.”

They were talking about the heat index, a measure of how hot it really feels…