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

2024-09-26 to 2024-09-30 · San Bernardino County-upper Colorado River Valley, California

Event narrative

Excessive Heat Warning criteria were reached on each of the last five days of September. The event continued into October.

Wider weather episode

High pressure building in from the east brought late-season heat to the Mojave Desert, breaking daily temperature records and also cumulative heat records for the year. The episode continued into October.

Source: NOAA Storm Events Database, event_id 1216225. Narrative written by the NWS forecast office that issued the report.