Heat — San Joaquin Confluence, California

2021-09-06 to 2021-09-08 · San Joaquin Confluence, California

Event narrative

Daytime highs ranged between 102 and 107 degrees on September 6, 7 and 8.

Wider weather episode

A large upper high pressure center strengthened over the Great Basin during the Labor Day weekend (September 4 to September 6) resulting in temperatures rising to much above normal levels over the San Joaquin Valley, West Side Hills and Kern County Deserts on September 6. The dangerous heat remained prevalent over the area through September 9 prompting the issuance of heat highlights as the large upper high prodcued a pronounced southeast flow over the area. A trough moved into northern California during the morning of September 10 bringing an end to the dangerous heat as afternoon highs remained below the century mark at most stations.

Source: NOAA Storm Events Database, event_id 975373. Narrative written by the NWS forecast office that issued the report.