From a Washington Post story by Scott Dance headlined “Why a sudden surge of broken heat records is scaring scientists”:

A remarkable spate of historic heat is hitting the planet, raising alarm over looming extreme weather dangers — and an increasing likelihood that this year will be Earth’s warmest on record.

New precedents have been set in recent weeks and months, surprising some scientists with their swift evolution: historically warm oceans, with North Atlantic temperatures already nearing their typical annual peak; unparalleled low sea ice levels around Antarctica, where global warming impacts had, until now, been slower to appear; and the planet experiencing its warmest June ever charted, according to new data.