New Delhi: The monthly average rainfall in the entire country is likely to be ‘above normal’, over 109% of the long -term average, IMD said on Sunday. It also warned of potential heavy rainfall incidents during the month in Uttarakhand, North Rajasthan, South Haryana, Delhi and parts of North Chhattisgarh, stating that extreme incidents could trigger landslides, mudslides, flash floods and urban floods.Geographically, in most parts of the country, the sept is likely to receive ‘normal’ from the ‘normal’ normal ‘rainfall, while in parts of the Northeast and Eastern India, many regions of the extreme South Peninsular India and parts of the northern India are likely to receive’ under normal rainfall, IMD said.Underlining the growing trend of increasing rainfall in sept since the 1980s, IMD chief Mritunjay Mohapatra said that it was appropriate for the authorities to be vigilant and to take all precautionary measures to avoid possible risks.He attributed the growing rainfall to be transferred from 1 sept 17 to September 17 to the last few years from September 17 to September 17 to the month, stating that interaction of western disturbances with the monsoon system during the month of transition, it receives more rain than normal rainfall. The heaviest August rain since 1996, says IMD IMD data for Aug shows that although the average rainfall during the month was 5% above normal, Northwest India and South Peninsula reported 34% and 31% above normal rainfall respectively. This caused cloudbukes, landslides and flash floods in Uttarakhand, Himachal Pradesh and J&K; Floods of farms in Punjab damaged agricultural crops; And several episodes of urban floods in cities including Delhi.IMD data shows that the rainwest India in Aug was the highest for the month of 1996 and was the highest 13th since 1901, while it was the third largest for South Peninsular India since 2001 and the eighth highest since 1901.Mohapatra said that although there was no growing trend of cloudbursts in the country, the data showed at least a growing trend of ‘mini-cloudbuke’, leading to landslides and other disasters, especially in the country’s hilly region. A cloudburst is a short-term extreme weather phenomenon that contains heavy rainfall at very small areas (20–30 sq km) at a very fast rate (100 mm per hour). In a mini-cloudbers, rainfall is at a rate of 50 mm per hour. In India, during the monsoon season there are cloudbursts, typically in the original regions such as the Himalayan region, the northeastern states and the Western Ghats.Citing an example of heavy rains in Chennai on Saturday, Mohapatra said that cloudbukes or mini-cloudbers are not limited to mountainous areas.
