Record heatwave continues with no end in sight

The scorching heat that continues to grip the West caused a highway in Washington to collapse this week, while at least a dozen cities in California broke historical records for high temperatures.

A heat wave engulfing much of the country has been especially stifling on the West Coast, where some areas have experienced multiple days of triple-digit temperatures that have turned deadly.

More than 70 million people are under heat warnings in the West as a scorching heatwave continues.

In Oregon, the Multnomah County Medical Examiner’s Office said Monday it is investigating at least four suspicious heat-related deaths since a state of emergency was declared July 5 amid dangerously high temperatures.

Those killed by the sweltering heat included an 87-year-old man, a 75-year-old man and a 64-year-old man, all from the Portland area, the medical examiner’s office said. A 33-year-old man was taken to a Portland hospital from outside Multnomah County and also died of a suspected heat-related illness.

On Monday, temperatures reached 101 degrees in Portland and 104 degrees in Eugene and Salem, Oregon, according to the National Weather Service (NWS). All three cities set new daily high temperature records, according to the weather service.

Portland is forecast to experience its fourth consecutive day of triple-digit temperatures on Tuesday, with temperatures expected to climb to 105 degrees, according to the NWS.

Potholes on the road in Washington

In Washington, extreme temperatures caused State Route 111 in Skagit County to buckle Monday, creating potentially dangerous conditions for drivers, according to the Washington State Department of Transportation.

“Our crews were dispatched and found that the concrete panels underneath the asphalt had buckled due to the heat,” Madison Sehlke, a spokeswoman for the Washington State Department of Transportation, told ABC affiliate station KOMO in Seattle.

In Washington, temperatures reached 90 degrees in some areas on Monday. In Olympia, the temperature reached 99 degrees on Monday, breaking a daily record set in 2010, according to the National Weather Service. Seattle also broke a daily temperature record on Monday when the temperature reached 91 degrees, according to the NWS.

Excessive heat warnings in place for most of California

The entire state of California was under an excessive heat warning or heat advisory on Tuesday.

Palm Springs, which set an all-time heat record on Sunday when temperatures peaked at 124 degrees, is forecast to hit 121 degrees on Tuesday, according to the NWS.

A long-lasting heat wave is expected to continue through this week in California’s Central San Joaquin Valley.

Fresno is forecast to see its seventh consecutive day of temperatures of 105 degrees or higher on Tuesday, Andy Bollenbacher of the NWS office in Hanford, California, told ABC News.

Bollenbacher said the record for consecutive days of 105 degrees or higher in Fresno is 14. He said the extended forecast shows temperatures in Fresno of 105 degrees or higher lasting at least through Sunday.

Temperatures in Fresno on Tuesday are forecast to reach 109 degrees, Bollenbacher said.

California’s Death Valley remains the hottest place in the country. At 11 a.m. local time Tuesday, the temperature in Death Valley was 112 degrees and is forecast to reach 128, according to the NWS.

The highest temperature ever recorded in Death Valley was 134 degrees, recorded in 1913, which is also the highest temperature ever recorded on Earth, according to the NWS.

At least 12 cities in California have seen historic heat records broken since Saturday, including Redding in Northern California, which hit 119 degrees on Monday, and Dagget in Southern California, which hit 118 on Sunday, according to the National Weather Service.

Dangerous heat to continue in Arizona

Oppressive heat is forecast to continue through the rest of the week in Arizona, where an excessive heat warning has been extended for the Phoenix metropolitan area.

In Phoenix, temperatures are expected to peak at 117 degrees on Tuesday and stay above 109 degrees through at least Monday, according to the NWS. Lake Havasu City is forecast to reach 120 degrees on Tuesday, Wednesday and Thursday before dropping to 117 on Friday and 110 on Sunday, according to the NWS.

A 50-year-old man hiking in the Grand Canyon has died after being found unconscious over the weekend, marking the third death at the national park in the past three weeks.

A man was unconscious when he was found on the Bright Angel Trail in the Grand Canyon, about 100 feet from the trailhead on Sunday, according to the Grand Canyon Regional Communications Center.

NPS said temperatures on exposed portions of the trail can reach more than 120 degrees in the shade.

Las Vegas is expected to break consecutive record for hot days

Just days after recording its hottest day ever, Las Vegas is aiming to break another record: consecutive days of 110 degrees or hotter.

The NWS is forecasting high temperatures of 114 to 118 degrees for the rest of this week, putting Las Vegas in position to break the current record of five consecutive days of 110 degrees or higher.

Las Vegas has a 90 percent chance of breaking its all-time record for consecutive days of 110 degrees or higher, meteorologist Matt Woods of the NWS’s Las Vegas office told ABC News.

Temperatures in Las Vegas on Tuesday are forecast to reach 117 degrees, making it the seventh consecutive day it has exceeded the 110-degree mark, Woods said.

Las Vegas’ record for 10 consecutive days of 110-degree temperatures was set in 1961 and was matched in July 2023.

“Between tomorrow and Saturday we have a 90 percent chance of hitting 110,” Woods said. “So it’s very possible we’ll break the record.”

On Sunday, Las Vegas hit 120 degrees, breaking the record for the hottest day in the city’s history.

Warm weather in other parts of the country

This weekend, record-breaking heat will move into the Rocky Mountains, where cities like Denver, Colorado, and Rapid City, South Dakota, could see record high temperatures.

Numerous cities along the East Coast are predicted to reach or approach 100 years of age.

In Washington, D.C., the temperature hit 98 degrees Tuesday afternoon and is forecast to reach 96 degrees Wednesday. Philadelphia hit 94 degrees Tuesday afternoon. Farther south, the temperature Tuesday afternoon in Richmond, Virginia, rose to 95 degrees and was 94 in Charlotte, North Carolina, according to the NWS.