New York City is sweltering through its second heat wave of the summer.
The threshold for what constitutes a heat wave varies by region, but here in the NYC area it is defined as three consecutive days with temperatures reaching 90°F or higher. Wednesday marked the city’s fourth day of scorching conditions.
The main driver of this dramatic heat and humidity is a dominant Bermuda High, a large area of high pressure situated off the east coast. Spinning clockwise, it has been steering hot, humid air from the Gulf of Mexico toward the northeast.
While these conditions are oppressive, they can also be dangerous. The NWS issued both heat advisories and air quality alerts for the city over the past few days.
The normal high for this time of year in the Big Apple is 84°F.