Excessive Heat — San Bernardino County-upper Colorado River Valley, California

2020-09-04 to 2020-09-07 · San Bernardino County-upper Colorado River Valley, California

Event narrative

Excessive Heat Warning criteria were reached for four straight days.

Wider weather episode

Strong high pressure over the Mojave Desert produced yet another heat wave. Several temperature records were broken, including some records for the month of September.

Source: NOAA Storm Events Database, event_id 911588. Narrative written by the NWS forecast office that issued the report.