A view of damage caused by a wall collapse due to flash flood in Padamavati area of Pune (PTI)

Heavy rains wreaked havoc in Maharashtra's Pune within 24 hours on Thursday. The city recorded 106 millimetres of rainfall on Thursday. The incessant downpour flooded nullahs and rivers, causing walls to collapse in several places across the district. The rain-related incidents have killed at least 21 people while five people are missing. Over 3,000 people were shifted to safety while 59 villages in the district were affected.

Here are 10 points about Pune Rains

1) Very heavy rains paralysed a major portion of Pune in just four hours.

2) The official death toll is 21 and five are said to be missing. However, locals say the death toll is likely to increase as the number of missing people was higher than the government estimate.

3) As per the Pune fire department, 574 people shifted to safe places like public schools. People who shifted to their relatives or friends place is around 3000.

4) In Ambil Odha colony, 250 families below-the-poverty line were evacuated and in Padmavati area, 250 poor families were sent to safe zone while Pune Municipal Corporation made arrangements for their food and clothing.

5) The rain water swept away 2,500 vehicles. Out of this, 700 are said to be four-wheelers and 1800 are bikes and scooters that have got damaged, said the fire department official.

6) The flood-affected areas in Pune include Katraj, Balaji Nagar, Padmavati, Sahakarnagar, Kondwa, Fatima Nagar, Wanori, Parvati area, Dandekar Bridge, Ganesh Peth nala, Mahtre Bridge area, Sinhagad Road's Dhayari area, Erandwane, Tangewali Colony and Kothrud. The floodwater had inundated basements and ground floors of these areas.

7) As the water began to recede on Friday, people in the Gururaj society on Katraj Road were seen cleaning their houses, shops and auditoriums. The area was damaged by flash floods within four to five hours, caused by heavy rains on Katraj mountain.

8) Indian Metrological Department has ruled out cloud-burst as a cause of flash floods in Pune. A senior met official said that the flash flood was caused by encroachment on the banks of Amil Odha, a river stream which runs through the city.

9) The heavy rains on the Katraj mountain filled the 250-year-old reservoir lake. The overflowing water came down to the city through Amil Odha. Due to obstruction of flow caused by encroachment, the water broke the banks and entered the residential areas.

10) According to IIT-M scientist Kiran Jhohare, the flash flood was a part of a delayed and extreme weather pattern being witnessed across the Earth. This weather anomaly was caused by the disturbances in the electromagnetic field of the Earth due to erratic Sun activities.