Heat — Western San Joaquin Valley in Kern County, California

2021-08-04 · Western San Joaquin Valley in Kern County, California

Event narrative

Daytime highs ranged between 104 and 108 degrees on August 4.

Wider weather episode

A strong ridge of high pressure aloft centered over southern Nevada August 3 and 4 provided for a period of excessive heat over the Kern County Deserts prompting an Excessive Heat Warning for both days. In addition, much of the San Joaquin Valley was impacted by significant heat on August 4. Temperatures cooled to below dangerous levels on August 5 as a low pressure system pushed through northern California and weakened the ridge.

Source: NOAA Storm Events Database, event_id 965403. Narrative written by the NWS forecast office that issued the report.