71.   And thus isolated interior sections will receive heavy rainfall and likely brief urban flooding problems.

72.   At the very least, urban and stream flooding should be expected again this afternoon across interior sections.

73.   Becoming partly cloudy afternoon with a slight chance of showers interior sections.

74.   Basically dry weather will continue through at least Saturday with only isolated showers, possibly isolated afternoon thunderstorms across the west and western interior sections of Puerto Rico.

75.   But an increase of cloudiness with scattered showers and possibly strong thunderstorms are expected once again over the west and interior sections of Puerto Rico in the afternoon.

76.   Chance of a thunderstorm interior sections.

77.   Clouds and showers began to increase rapidly across the north and northern interior sections of Puerto Rico this morning as a pre-frontal trough moved over from the Atlantic waters.

78.   Cool interior sections.

79.   Cool western interior sections.

80.   Daytime heating and the upper level trough to produce an active afternoon for the western half and the interior section of Puerto Rico.