Idalia gains hurricane force, expected to strengthen before Florida landfall

Tropical Storm Idalia is expected to rapidly intensify as it aims for Florida's Gulf Coast, threatening to hit as a Category 3 hurricane

FACTBOX-Stocks to watch as Idalia makes landfall in Florida

Idalia is expected to rapidly intensify in the record-warm Gulf of Mexico. Here's what that means

Factbox-Most powerful hurricanes in US history

Tropical Storm Idalia is expected to intensify into a hurricane as it churns toward Florida's Gulf Coast

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