Temperatures are expected to soar along the U.S. West Coast on Friday and Saturday, the National Weather Service said, warning that “dangerous heat” will likely spread up the West Coast as it intensifies.Forecasters said temperatures will be 15-30 degrees above average for much of the West Coast Friday, and “numerous record-breaking temperatures can be expected through the next few days,” the weather service said.Heat watches and warnings are in place across multiple states, including large swaths of California, as well as parts of Nevada, Arizona, Oregon and Washington.In parts of California and southern Oregon, temperatures could blast into the triple digits,…