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US Southwest swelters under extreme temperatures as heat dome persists

A huge highpressure system known as a heat dome that has stalled over the U.S. Southwest will push temperatures in the region well above 100 degrees Fahrenheit (38 C) on Thursday, leaving millions of Americans to swelter in the coming days.

Some 30 million individuals from Northern California, south through Arizona and east into Texas, were under excessive heat cautions and heat advisories issued by the National Weather Service through Saturday. The same region suffered under weeks of extremely heat last summertime.

It's just too hot, stated Michelle Reynolds, 52, who was with her canine, Scott, at a park in Modesto, California. It's not just hot for us, it's also hot for the animals.

Reynolds said the seasonal heat seems to be becoming worse every year, sounding resigned to the uncomfortable conditions.

You just never know how the climate is going to alter, she said. We just go day by day. That's all you can do.

The high temperature is anticipated to reach 112 F (44 C) on the Las Vegas strip on Thursday, which would be a record for June 6. That is still cooler than the anticipated conditions in Death Valley, California, where the temperature level is forecast to reach 121 F by the afternoon.

In Phoenix, Arizona's capital city of 1.6 million individuals, the heat was to reach 114 F, requiring local officials to open cooling centers at libraries and to close some popular treking tracks during the day.

The hot temperatures continue and a few records may even be broken over the next number of days, the NWS in Phoenix said in a post on social media platform X.

Numerous cities in the area experienced their most popular summertimes on record in 2023. In Phoenix, the heat reached 110 F for 55 straight days, a record for the city where 645 individuals passed away in the city area due to heat-related illnesses last summer.

Forecasters state it was tough to connect the record-breaking heat experienced by the U.S. Southwest recently to human-induced climate change, however such extremes are ending up being more regular because of worldwide warming.

A heat dome is the reason for today's dangerously hot conditions, according to NWS forecasters. A heat dome is a ridge of high-pressure air in the upper atmosphere that stalls and traps hot air while keeping cooler air away even at night.

Forecasters urged locals across the area to stay indoors, beverage lots of fluids and if able, to examine neighbors and loved ones.