FFT (amenaza inminente de inundación)

This CAFFG regional product represents the flash flood threat (FFT) index. The FFT index is the excess amount of rainfall for a three hour period over what is needed to cause bankfull flows (i.e., minor flooding) in small streams draining areas of approximately 200 (77 sq.mi.). The FFT product is updated every six hours, beginning at 0300UTC (9:00PM Local Time for Costa Rica). In general, higher FFT index values indicate a greater likelihood that flash flooding will occur or is occurring in the area depicted.

The low resolution images shown here are intended to be used as examples of products available to Central America forecasters. Higher resolution products are available at the local government Meteorological and Hydrological Services. Such Services should be contacted for more detailed information and official forecasts.

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