What caused monster thunderstorm twice Everest's height over Mumbai | 5 points

The height of the monster thunderstorm is nearly 25,000 feet higher than the cruising altitude of commercial airlines, experts have said.

Parts of Mumbai on Saturday received the heaviest one-day on July in the last seven years which led to landslide and several deaths and injuries. Weathermen have found that a monster thunderstorm is behind the torrential rain, which was not predicted by the system. The thunderstorm had a cloud top height of 60,000 feet above the ground, higher than Mr Everest.

Commuters wade through a waterlogged road at Dadar after a monster thunderstorm caused heavy rains in Mumbai and adjoining areas on Sunday. (PTI)

Here are 5 points about what happened:

1. The height of the thunderstorm is nearly 25,000 feet higher than the cruising altitude of commercial airlines, experts have said.

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2. In a month like July when the monsoon is active in the country, such thunderstorms are uncommon. Experts have compared this to the one that was seen in 2005.

3. A monster thunderstorm is a collection of many thunderstorms. One of the reasons could be the increased number of a dry spell at a stretch, which can be linked to an overall rise in the number of unnatural weather events.

4. An independent forecaster @IndiaWeatherMan said the monster thunderstorm came up over Raigad district in the evening. Then it slowly moved northward along the west coast towards Mumbai, without losing its strength, which is unique.

5. For the past few days, Mumbai has been receiving moderate rains, but mostly small-area, isolated downpours, which are "almost impossible" to predict.

What will happen next?

According to the IMD, an off-shore trough at mean sea level runs from Maharashtra coast to Karnataka coast, which is likely to persist during the next 5-6 days and a shear zone runs roughly along latitude 17 degree north in mild tropospheric levels and may persist for the next two days. Under its influence, Maharashtra will continue receiving heavy to very heavy rainfall during next 5-6 days. Konkan, Goa, part of Karnataka will also receive isolated heavy rainfalls, the IMD has predicted.