The European model forecasts heat indices around or above 100 degrees from Saturday into next Thursday. This is a very prolonged heat wave that poses danger for those who work outside or the elderly.

Heat wave forecast maps "Summer has taken its time arriving in the Northeast, but it's coming in HOT," the National Weather Service wrote in a social media post last week, warning of triple-digit ...

Forecasters predict that the heat wave could be “one of the longest,” with monsoons running late and nights that stay warm. Skip to content Skip to site index U.S.

But this heat wave will last 7-10 days, with temperatures nearing 100° some days in the urban corridors. Below are the European Model’s daily high temperatures starting Sunday June 22nd, and ...

For example, when the air temperature is 100 degrees Fahrenheit, and the relative humidity is 55 percent, the heat index can shoot up to a sweltering 124 degrees Fahrenheit. And that’s in the shade.