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

2025-06-18 to 2025-06-19 · San Bernardino County-upper Colorado River Valley, California

Event narrative

Extreme Heat Warning criteria were reached on two straight days.

Wider weather episode

Another dome of high pressure passed over the Mojave Desert, triggering another round of dangerously hot temperatures.

Source: NOAA Storm Events Database, event_id 1274229. Narrative written by the NWS forecast office that issued the report.