Tropical Storm Isaias formed in the southwestern Gulf on Wednesday morning and is primed to “rapidly strengthen” into a dangerous hurricane en route to landfall on the northern Gulf Coast.

Hurricane Isaias continued its trek toward the U.S. Gulf Coast early Thursday, with a landfall expected late Friday as a dangerous hurricane, driving life-threatening storm surge, damaging winds and f...

Forecasters said dangerous storm surge could affect an even wider area, from southeast Louisiana to Florida’s Big Bend.