11.   Since the air mass across Puerto Rico is moist and unstable, afternoon heating will likely set off another round of scattered showers and isolated thunderstorms.

12.   The afternoon heating from the sun will make the atmosphere even more unstable raising the chances for thunderstorms, especially over the higher terrain.

13.   The increased sunshine and afternoon heating will create a few showers and thunderstorms over the western interior and west coast of Puerto Rico.

14.   Typical afternoon heating should produce showers and thunderstorms concentrated over westen interior and northwestern Puerto Rico also allowing for the possibility of very heavy rain and flooding.

15.   When you factor in the afternoon heating, showers and thunderstorms become very likely.