Texas ? Residents along the Texas-Mexico border kept a watchful eye on Tropical Storm Dolly on Monday, stocking up on plywood, generators and flashlights as forecasters predicted the storm would strengthen into a hurricane later this week and make landfall.

Hurricane warnings were issued late Monday for parts of the Texas and Mexico coasts, meaning hurricane conditions were expected in those areas by the end of today.

The storm was expected to bring high winds and dump 10 to 20 inches of rain in coastal areas near the U.S.-Mexican border. Emergency officials feared major flooding problems and urged coastal residents to prepare.