Next week, slowly but surely, a classic “Bermuda high” pattern will evolve. What happens is simple: as high pressure drifts from the East Coast over the Atlantic towards Bermuda, the clockwise circulation around it acts like a heat pump, channeling oppresively moist tropical air up the East Coast.
NOAA’s Hydrometeorological Prediction Center (HPC) predicts the maximum heat index - what it feels like combining the heat and humidity - will ascend as such:
By Thursday, the heat index has a 20 percent chance of exceeding 100 HPC says.
These temperatures are not record-breaking and lower than peak levels reached last June, but could be the hottest of 2012 to date.
Enjoy the weekend before the sultriness seeps in.