Tonight, a weak and broad area of surface low pressure is interacting with an upper-level trough to produce extensive clouds, showers, and thunderstorms over much of the western Gulf of Mexico. This system, designated 94-L, is expected to move north or northwest slowly this weekend. Proximity to land and unfavorable upper-levels winds will limit how strong 94-L gets.
This system will produce periods of heavy rain over portions of the upper Texas coast and southern and southwestern Louisiana near the I-10 corridor southward to the coastal waters. I expect this system will force moisture into central Louisiana this weekend into early next week. This will be accompanied by an increase in the coverage of showers and thunderstorms.
Elsewhere in the Tropical Atlantic Basin, a tropical wave is located in the far eastern Atlantic about 550 miles southwest of the Cape Verde Islands. This wave is moving westward at 15-20 mph. This system is not expected to develop into a tropical cyclone this weekend.