Significant Heat in the Northwest U.S.; Tropical Rainfall Potential in the Southwest U.S.

A significant late season heat wave continues in the interior Pacific Northwest for at least one more day before easing somewhat Friday into Saturday. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring a marginal to slight risk of excessive rainfall across the southwest U.S. through Saturday which may bring areas of flooding. Read More >

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Last Map Update: Thu, Sep 4, 2025 at 5:34:24 am HST

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Significant Heat in the Northwest U.S.; Tropical Rainfall Potential in the Southwest U.S.

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