The California Independent System Operator has issued a Flex Alert for Northern California for Monday and Tuesday, and is asking consumers to reduce their energy use because of anticipated high demand.
Hot and dry conditions are now expected to continue through Thursday in the San Francisco Bay Area, where an excessive heat warning remains in effect through Tuesday night.
A special statement from the National Weather Service indicated the Bay Area will experience hot temperatures until at least 7 p.m. Tuesday, and maybe longer.
There will be few places within the Bay Area to escape the heat this weekend, with temperatures on the rise even along the coast.
The Bay Area and the entire state of California were preparing Thursday for a scorching weekend that could see temperatures hit triple-digit highs in many areas, even above 5,000 feet in the mountains, as a massive heat wave rolls through the West Coast.
Temperatures are expected to be above normal in the Bay Area through the rest of the week. But forecasters said the first major storm of the season could hit the region next week.
A new study by climate researchers suggests California heat waves are trending toward being more humid with elevated nighttime temperatures and are becoming stronger in populous coastal areas.
With more hot temperatures expected Tuesday, a statewide Flex Alert is in effect, and residents are being urged to cut back on energy use during peak daytime hours, a California Independent System Operator spokeswoman said.
Temperatures are soaring into triple digits across the western United States as a continuing heat wave strained energy supplies and sent thousands to beaches, lakes and shopping malls in search of cooler climes.
Temperatures were expected to approach 100 degrees in inland parts of the Bay Area this week, according to the National Weather Service.