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Record Heat Wave Hits Western US, Sparks Fire Warnings

3/20/2026

48 7 Full Breakdown

Summary

Story summary

A significant heat wave is gripping the western United States, with temperatures 20–30 degrees above March averages and some areas at 108 degrees.
The National Weather Service has issued extreme heat warnings for the affected regions.
The heat wave has already shattered temperature records across California, Arizona, and beyond.
Experts warn the early onset could raise fire risks and threaten water supplies as snowpack melts prematurely.

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Story summary

A significant heat wave is gripping the western United States, with temperatures 20–30 degrees above March averages and some areas at 108 degrees.
The National Weather Service has issued extreme heat warnings for the affected regions.
The heat wave has already shattered temperature records across California, Arizona, and beyond.
Experts warn the early onset could raise fire risks and threaten water supplies as snowpack melts prematurely.