Heat Wave

A rapidly growing wildfire south of Lake Tahoe forced the evacuation of a mountain town and the cancellation of an extreme bike ride through the Sierra Nevada, leaving thousands of riders and spectators stranded Saturday and rushing to flee the area.

Low-income neighborhoods with higher Black, Hispanic and Asian populations experience significantly more urban heat than wealthier and predominantly white neighborhoods in the Southland and within a vast majority of populous U.S. counties, according to a UC San Diego School of Global Policy and Strategy study released Tuesday.

The LA County Emergency Rescue team is warning people to take precautions when hiking outdoors due to the extreme heat. Lauren Coronado reports for NBC4 News at 6 p.m. on July 11, 2021.

Some Southern Californians face another day of dangerous, triple-digit temperatures, elevated fire danger and a statewide call to conserve power.

A statewide Flex Alert is one of the steps the operator of California’s power grid can take to avoid unplanned power outages in extreme heat.

Monday marks the third time since Friday that Californians have been asked to conserve electricity. Toni Guinyard reports for Today in LA on Monday July 12, 2021.

Away from the coast, expect temperature highs in the 90s, and triple digits in some areas, as the heat continues. David Biggar has the forecast for Monday July 12, 2021.

Firefighters working in searing heat struggled to contain the largest wildfire in California this year while state power operators urged people to conserve energy after a huge wildfire in neighboring Oregon disrupted the flow of electricity from three major transmission lines

Another crowded day at SoCal’s natural air conditioning playground. Mekahlo Medina reports for NBC4 News at 5 p.m. on July 11, 2021.

The California Independent System Operator (CAISO), which manages the state’s power grid, has issued a statewide grid warning notice due to loss of resources and fire threat to the transmission system and is encouraging conservation.

Some states in the Pacific Northwest announced emergency rules that provide farmworkers and others who work outdoors more protection from hot weather in the wake of an extreme heat wave.

The coast will remain cooler while the heat wave continues for inland areas with dangerous heat in the deserts. Temperatures will be 5 to 10 degrees above normal. The heat is expected to peak over the weekend. Belen De Leon has the forecast for Friday July 9, 2021.

An Associated Press analysis shows that the recent heat wave struck places that are warming up faster than other parts of the United States

As forecasters warned of record-breaking temperatures in the Pacific Northwest and western Canada, officials set up cooling centers, distributed water to the homeless and took other steps.

People are doing anything they can to avoid the extreme heat. Gordon Tokumatsu reports for NBC4 News at 5 p.m. on June 28, 2021.

Here are the top firework safety tips from experts across the country—so you can make sure your 4th of July, 2021 celebrations are crisis-free

The grim toll of the historic heat wave in the Pacific Northwest has become more apparent as authorities in Canada, Washington state and Oregon say they’re investigating hundreds of deaths likely caused by extreme temperatures

As the Pacific Northwest swelters in an unprecedented heat wave, an electrical utility in the Washington state city of Spokane has announced that more rolling blackouts have started that will cut off electricity and air conditioning to some customers.

Hydrating, no-cook foods are the order of the day when temperatures soar.

Excessive heat plagued Southern California on Sunday and more triple-digit temperatures are likely again to start the week.