Tropical Storm Beryl is expected to regain hurricane force before it reaches the Texas coast — bringing dangerous winds, up to 15 inches of rain and flooding that could reach five feet, the National Weather Service warned Saturday morning. The deadly storm is churning west-northwest across the Gulf of Mexico at about 12 mph and is forecast to make landfall by late Sunday or early Monday, according to an update from the NWS’ National Hurricane Center. A hurricane watch is in effect from the mouth of the Rio Grande northward to the San Luis Pass near Houston, and a storm-surge watch is in effect…