New York City is experiencing a heat advisory and a heightened risk of severe thunderstorms through the weekend, prompting local officials to implement an emergency response plan. The advisory, which covers all five boroughs, remains in effect until 8 p.m. on Saturday as forecasters warn of a combination of high temperatures and intense humidity.

Meteorologists predict daytime highs will hover near 90 degrees Fahrenheit, but the elevated humidity is expected to make conditions feel much hotter, with heat indices surpassing 100 degrees. Senior meteorologist Brian Thompson described the current moisture levels as "very tropical," comparable to what is typically observed in Caribbean climates.

The persistent humidity is contributing not only to discomfort but also to increased chances of scattered thunderstorms developing across the city. Officials anticipate that these storms could bring heavy downpours late Friday, raising concerns about potential flash flooding and exacerbating the heat’s impact on vulnerable populations.

City authorities have activated their emergency plans to address the dual threats posed by the heat and thunderstorms. Measures include opening cooling centers, issuing heat safety advisories, and preparing emergency crews for rapid response to weather-related incidents.

Residents are advised to stay hydrated, limit outdoor activities during peak heat periods, and monitor local weather updates as conditions evolve. The combination of oppressive humidity and thunderstorms presents ongoing challenges through the weekend as New York City contends with these extreme summer conditions.