A highly anomalous ridge of high pressure and light offshore winds brought record breaking heat to the region on the 22nd and 23rd. Just inland from the coast temperatures reached into the low to upper 90's, with Anaheim topping out at 100 degrees on the 22nd. The impact was low, though media coverage was high due to the Thanksgiving Holiday.

Heat in SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE, CALIFORNIA
From 22-NOV-17 11:00:00 to 22-NOV-17 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Afternoon highs were in the mid 90's. Riverside set a daily record with an afternoon high of 95 degrees. This highest temperature on record for this late in the year.

Heat in SAN DIEGO COUNTY COASTAL AREAS, CALIFORNIA
From 23-NOV-17 11:00:00 to 23-NOV-17 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Afternoon highs were in the upper 80s and mid 90s. All of the climate sites in the zone set daily record high temperatures.

Heat in SAN DIEGO COUNTY VALLEYS, CALIFORNIA
From 23-NOV-17 11:00:00 to 23-NOV-17 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High temperatures in the afternoon reached the low to upper 90s.

Heat in SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE, CALIFORNIA
From 23-NOV-17 11:00:00 to 23-NOV-17 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Afternoon high temperatures were in the low to mid 90s. Riverside reached 94 degrees, the hottest temperature this late in the year since 1958.

Heat in ORANGE COUNTY INLAND, CALIFORNIA
From 23-NOV-17 11:00:00 to 23-NOV-17 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

High temperatures were in the mid to upper 90s.

Heat in SAN DIEGO COUNTY COASTAL AREAS, CALIFORNIA
From 22-NOV-17 11:00:00 to 22-NOV-17 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Temperatures ranged from the upper 80's at the beaches to the upper 90's several miles inland. San Diego reached 92 degrees, the latest 90 degree temperature on record for a calendar year.

Heat in SAN DIEGO COUNTY VALLEYS, CALIFORNIA
From 22-NOV-17 11:00:00 to 22-NOV-17 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures in the valleys were in the mid to upper 90's. El Cajon reported a high of 98 degrees. This is the cities second highest November temperature on record.

Heat in COACHELLA VALLEY, CALIFORNIA
From 22-NOV-17 11:00:00 to 22-NOV-17 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Temperatures in the Coachella Valley topped out in the mid 90's. Palm Springs reached 96 degrees, the highest temperatures on record for this late in the year.

Heat in ORANGE COUNTY INLAND, CALIFORNIA
From 22-NOV-17 11:00:00 to 22-NOV-17 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures reached into the mid and upper 90's. Anaheim recorded the hottest temperature in the country on this day with a reading of 100 degrees.

Heat in ORANGE COUNTY COASTAL, CALIFORNIA
From 22-NOV-17 11:00:00 to 22-NOV-17 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Afternoon high temperatures topped out in the upper 80's and mid 90's.