The National Weather Service said the Flash Flood Watch is now in effect for Westprt and area through this evening.
Showers and thunderstorms will develop this afternoon along a nearly stationary frontal boundary to the west, the Weather Service said.
The potential still exists for heavy rainfall.
Localized rainfall rates of 1 to 2 inches per hour could result in flash flooding of urban and poor drainage areas and small streams, the Weather Service said.