...Flash Flood Watch remains in effect from 2 am AST Friday through Saturday morning...
The Flash Flood Watch continues for
* all of Puerto Rico...including Vieques and Culebra and for the U.S. Virgin Islands.
* From 2 am AST Friday through Saturday morning
* a strong tropical wave will approach the local islands late tonight into Friday. Numerous showers with thunderstorms are expected to spread across the region associated with this wave. Therefore...a much wetter pattern is expected as associated deep tropical moisture move across the region. Based on the latest hurricane center guidance...environmental conditions are expected to be conductive for development during the next couple of days while the system moves west-northwestward around 20 mph.
* Regardless of development...periods of moderate to heavy rainfall are possible late tonight through at least Saturday morning across Puerto Rico and the U.S. Virgin Islands with an increasing potential for urban and flash flooding. Rainfall totals between 4 to 6 inches with locally higher amounts are possible.
A Flash Flood Watch means that conditions are favorable for heavy rain across the watch area...which may lead to flooding. If you are in the watch area...check your preparedness requirements... especially if you have interests along area rivers. Keep informed... and be ready for quick action if flooding is observed or if a Flash Flood Warning is issued.
People in the watch area should continue to be aware of the possibility for heavy rainfall. Avoid low lying areas...and be careful when approaching Highway dips and underpasses. The heavy rain could also cause mudslides in areas of steep terrain.
Stay tuned to NOAA Weather Radio...local TV...radio or your cable television provider for later statements and possible warnings.
This product...along with other weather...hydrological and climate information...is available on the web at http://www.Srh.NOAA.Gov/sju or at http://weather.Gov.