Weather news: From 10% deficiency in June to 59% excess in July, IMD explains cause of monsoon mayhem in north India

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Indian Meteorological Department (IMD) has said that the rainfall spell over northwest India in the first few days of July, has bridged the deficit for the entire country. It is to be noted that not one, but two conditions have caused this mayhem.

An interaction between a western disturbance and the monsoon trough led to extremely heavy rainfall.  “The interaction is causing heavy to very heavy rainfall over Jammu and Kashmir, Himachal Pradesh, north Punjab and Haryana, Uttarakhand. As forecast by us that there will be good rainfall in July, we have covered the rainfall deficit now," said M Mohapatra, director general of IMD.  “In the past nine days, rainfall was 24% excess for the period in July.

Rainfall will gradually reduce over these states from tomorrow onwards." The cumulative rainfall in the monsoon season has reached 243.2 mm, which is two percent above the normal of 239.1 mm, according to IMD.  At the end of June, the cumulative rainfall for the entire country was 148.6 mm, 10 percent below the normal precipitation.  India saw a 10% deficiency in rainfall till end of June. However, the monsoon’s surge over the west coast and parts of northern India in the past week has led to a 2% excess rainfall over the country on 9 July.  The IMD has noted a 59% excess rainfall over northwest India; 4% excess over central India; 23% deficiency over peninsular India and 17% deficiency over east and northeast India, the weather office said.

The IMD had earlier forecast normal rainfall in July. Heavy rain has led to landslides and flash floods in several parts of the region.

In cities and towns, many roads and buildings remain submerged in knee-deep water. As the rain across the northern parts of the country has killed over 20