![]() Tropical oceans, he said, have warmed roughly 2 degrees Fahrenheit since the Industrial Revolution. That heat is expected to persist through at least Tuesday, according to the National Weather Service, which issued an excessive heat warning across the island, urging Puerto Ricans to “take extra precautions” to stay cool while outside.īerardelli linked Puerto Rico’s extreme heat spell this week to several overlapping factors, including the formation of a fierce heat dome just east of the island, a strong El Niño weather pattern amplifying heat waves and other extreme weather and climate change generally making the oceans warmer. High humidity combined with high temperatures can be especially dangerous since less sweat can evaporate off your body to cool it off. ![]() The heat index-which combines temperature with humidity-soared above 100 degrees Fahrenheit across much of the territory on Monday, with parts of Puerto Rico reaching a heat index as high as 125 degrees. In a series of tweets Monday, Florida-based meteorologist Jeff Berardelli warned of “life-threatening heat” in Puerto Rico, with conditions on the island becoming “so hot that some meteorologists are astonished.” But Puerto Rico is so hot this week that it’s baffling some weather experts, who warn that other parts of the world will likely experience similar extreme heat this year as climate change and an exceptionally strong El Niño drive global temperatures to historic highs. territory rarely sees daytime temperatures below 70 degrees Fahrenheit. ![]() Even on its coldest winter days, the Caribbean island and largest U.S. ![]()
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