Puerto Rico is bracing for a rainy Friday, with showers expected throughout the day. The afternoon will see the most intense activity concentrated in the western interior and western sections of the island, posing a risk of heavy rainfall and lightning. This pattern is expected to persist throughout the weekend and into early next week, as the region prepares for the potential arrival of a tropical wave. The wave, currently over the eastern Caribbean, has a moderate chance of formation. In addition to the rain, a moderate risk of rip currents will continue for the next few days, particularly along the northern and eastern coastlines. A Heat Advisory is in effect for northern, western, and southern Puerto Rico, as well as St. Thomas, while St. Croix faces an Excessive Heat Warning.