Southern California braces for another September heat wave

The Nationwide Climate Service has issued warmth warnings and warmth advisories for a lot of Southern California this week, as one other warmth wave might ship temperatures into the triple digits.

A warmth warning is in impact for the valleys of Los Angeles County, and a warmth advisory has been issued for the inland coast, together with downtown L.A. Each are set to run out Tuesday at 8 p.m.

The valleys might see temperatures as excessive as 102 levels by means of Wednesday, and the mountains and deserts might hit 100. The coastal areas ought to solely be a number of levels larger than regular, rising to about 88 levels.

Whereas nonetheless dangerously heat in some areas, the present warmth wave ought to final solely about two days, and is on the “decrease finish” of the historic warmth wave earlier this month, based on Andrew Rorke, a senior forecaster with the Nationwide Climate Service in Oxnard.

“That is a lot shorter period and noticeably decrease temperatures,” Rorke mentioned.

A heat, excessive strain air mass, compounded by a slight offshore push delaying the ocean breeze, is driving the present stretch of maximum warmth, Rorke mentioned. However he reassured Angelenos this isn’t déjà vu of the historic warmth wave that kicked off September: The temperatures are anticipated to be 5 levels to 10 levels cooler, and the occasion shall be seven days fewer, based on the Nationwide Climate Service in Oxnard.

“This isn’t a record-breaking warmth wave by any means,” Rorke mentioned, including that as a result of it’s a Santa Ana season, information are “excessive and out of attain.” And in contrast to the final warmth wave, the lows won’t stay so stubbornly excessive that “there isn’t a hope in a single day,” he mentioned.

Farther south, warmth warnings are in impact for the Inland Empire by means of 8 p.m. Wednesday. Inland Orange County might attain 100 levels, and the Inland Empire might see temperatures hit 106.

A warmth advisory is in impact by means of 8 p.m. for the Orange County coastal areas, the place temperatures might rise to 92 levels.

The present stretch of excessive temperatures are barely mitigated by decrease humidity ranges, mentioned Mark Moede, a meteorologist with the climate service in San Diego. “The decrease humidity in comparison with what we had weeks in the past will make it a bit of extra tolerable,” Moede mentioned.

Elevated fireplace hazard is a persistent concern throughout a warmth wave, however meteorologists say they don’t predict Santa Ana winds this week, which lowers this risk degree.