With a heat dome, a massive ridge of high pressure essentially traps hot air underneath it, and miserably hot weather is the inevitable result, according to The Weather Channel.
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Excessive heat means more than just being uncomfortable – hot temperatures can have serious or even deadly health effects.
The chance of rain is 20 percent after 2 p.m. Light winds are expected. In the local mountains, Big Bear should be in the mid-80s and Idyllwild in the low 90s. Highs will be around 90 degrees.
The July heat will be accompanied by high dew points so it will be humid with a heat index values into the 100s Fahrenheit from the Gulf Coast to Minneapolis until next weekend.
Across the Corn Belt, scattered showers and locally severe thunderstorms are providing local relief from dry conditions across the lower Great Lakes region. There’s the chance for afternoon isolated thunderstorms.
Meteorologist Kevin Chierek says more seasonable and “cooler” air will arrive next week, as highs once again warm into the 80s with less humidity too.
Forecasts show that the hot weather will continue through Saturday.
A slight chance of showers and thunderstorms after 1pm.
The Omaha area was expected to have a high Sunday of 88, with partly sunny skies, Mead said.
A Heat Advisory has been issued for the Valley for Friday and Saturday from 1 p.m. until 7 p.m. Mostly cloudy, with a low around 71. Friday will be in the low 90s.
Tonight…Mostly clear. Low in the mid 70s.
While eastern cities, like NY, will most likely be spared the effects of corn sweat, they are still likely to be hotter than the surrounding areas because of the “urban heat island effect”.
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Worldwide, the first six months of this year have continued to shatter heat records, putting 2016 on track to be the Earth’s hottest year on record, the World Meteorological Organization said Thursday.
