Mumbai, July 24 - Nearly 200 people have been evacuated from coastal areas, warnings have been sent out to those in low-lying regions and schools have advised students to stay at home as India's financial capital braces for a massive 5.5 metre high tidal wave, billed as the highest in 100 years, to lash it Friday afternoon.

The high tide is expected to hit Mumbai and the surrounding Konkan region at 2.05 p.m. The waters will ebb only after three to four hours, met officials said.

In the past two days, as waves measuring 4.85 and 5.1 metres lashed Mumbai, civic and disaster management authorities evacuated people -- mostly shanty dwellers -- from vulnerable areas like Colaba, Cuffe Parade, Andheri, Jogeshwari and even parts of neighbouring Thane.

The Municipal Corporation of Greater Mumbai (MCGM) has issued warnings to people in low-lying areas to watch out for the gigantic tide Friday and take adequate precautions.

On Thursday, sea water rushed into several buildings in Cuffe Parade, Worli, Dadar, Prabhadevi, Andheri, Juhu, Khar and Malad.

Even mayor Shubha Raul's official bungalow at Shivaji Park in Dadar was not spared. The huge waves knocked down a compound wall.

In Thane, the district adjacent to Mumbai, waterlogging attributed to the high tide was reported from residential areas in places like Uttan, Palghar, Boisar and Dahanu but there have been no casualties so far.