Marco downgraded but still bringing rainfall as Laura strengthens

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    Marco has been downgraded to a tropical depression but is still bringing heavy rainfall. Tropical Storm Laura strengthens and is setting sights on the Gulf Coast. CNN meteorologist Tyler Mauldin has the latest.

    Marco has been downgraded to a tropical depression but is still bringing heavy rainfall. Tropical Storm Laura strengthens and is setting sights on the Gulf Coast. CNN meteorologist Tyler Mauldin has the latest.