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Southern California heat wave to continue through Monday

LOS ANGELES — Excessive heat plagued Southern California on Sunday as triple-digit temperatures were experienced in parts of the region, according to the National Weather Service.

The hottest temperatures were expected to be on Sunday and Monday as a hot air mass settles into place, the Weather Service reported, and high pressure builds. Officials said temperatures in the triple digits will be common in the valleys, foothills and desert.

High temperature records were tied Sunday in Lancaster, Palmdale and Idyllwild; while Palm Springs set a record for the date at 121 degrees.


The heat wave comes as historic temperatures hit the Pacific Northwest, breaking all-time records in several cities.

The California Independent System Operator initially said it expects to issue a Flex Alert for Monday because of the high heat but later said there were no plans to do so because there was sufficient power supply to meet the demand. Flex Alerts call for consumers to conserve power to keep the grid stable.

The high temperatures are expected to last into the week, though they should fall Tuesday compared to Monday.

The Weather Service projected a high of 103 degrees in Riverside on Monday, falling to a high of 95 degrees Tuesday. Temperatures at John Wayne Airport in Orange County were expected to reach 81 degrees Monday and 77 degrees on Tuesday. Heat was expected to reach 94 degrees Monday in Pasadena, falling to a high of 92 on Tuesday.

A weather pattern with humidity and showers might develop between Tuesday and Thursday, according to the Weather Service, as monsoonal moisture moves over the area.

Forecasters are concerned about winds over southern Santa Barbara County and have issued a wind advisory.

Elevated fire conditions are expected to be in place at least through Friday, and fire-starting lightning is possible Tuesday through Friday, the Weather Service reported. Fast fire growth could occur if a blaze starts.

Source: Orange County Register

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