For the North Atlantic...Caribbean Sea and the Gulf of Mexico: 1. 1. Northern Gulf of Mexico: Disorganized showers and thunderstorms over the north-central Gulf of Mexico are associated with an area of low pressure centered just offshore of the southern coast of Louisiana. Development, if any, of this system is expected to be slow to occur as it drifts west-southwestward and approaches the Texas coast over the weekend. Regardless of development, locally heavy rains are possible along portions of the Texas coast through the weekend. For more information about the potential for heavy rainfall, please see products issued by your local National Weather Service office and the Weather Prediction Center. * Formation chance through 48 hours...low...10 percent. * Formation chance through 5 days...low...10 percent.