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Excessive Heat in San Bernardino County-upper Colorado River Valley, California
Excessive Heat August 11, 2025 – August 13, 2025 · San Bernardino County-upper Colorado River Valley, California
What the National Weather Service wrote
Extreme Heat Warning criteria were reached on three straight days.
The wider storm
High pressure slowly strengthening overhead pushed temperatures in the Mojave Desert to dangerous levels.
Source: NOAA Storm Events Database, event 1293175. Narratives are written by the National Weather Service forecast office that issued the report.
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