Extremely heavy rainfall is “very likely” at isolated places in ghat (hilly/upland) areas, an IMD official said. “Very likely” denotes 51 to 75 per cent probability of occurrence, he added.
The forecast for Satara is “most likely” which means a probability of more than 75 per cent, he said.
A rainfall above 204.4 mm in 24 hours is considered as extremely heavy.
The forecast also included red alert for Ratnagiri and Satara for Saturday.
Intensity of showers will drastically come down from Sunday onward, the IMD said.