Your Daily Extreme Weather Briefing

Millions Under Flood Alerts as Tropical Storm Threatens Gulf Coast, Pacific Hurricanes Intensify

• Millions of Americans across Arizona, Utah, and Colorado are currently under flood watches as major storms bring torrential rain, leading to one fatality and 15 people reported missing as of Monday, August 31. The National Weather Service warns of sudden and dangerous flash floods impacting cities and national parks, including Phoenix, the Grand Canyon, and Zion National Park, advising residents to prepare for rapidly changing conditions.

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• A tropical storm warning has been issued for the Gulf of Mexico coast near the Texas-Louisiana state line, with a potential tropical cyclone forecast to strengthen and make landfall in Texas by Tuesday. In the Pacific, Hurricane Karina rapidly intensified into a major Category 3 storm, while Tropical Storm Lowell is on a path toward Hawaii and could become a hurricane by Monday night.

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• A recent study published in Geophysical Research Letters in August 2026 provides the first statistically significant confirmation that the planet's long-term warming rate is accelerating, nearly doubling since 2015 to approximately 0.35°C per decade. This acceleration, observed across five major global temperature datasets, underscores mounting pressure on the Paris Agreement's 1.5°C target.

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