- By Nidhi Giri
- Tue, 20 Aug 2024 05:48 PM (IST)
- Source:JND
In the first 20 days of August, there has been 36.9 per cent excess rain over northwest India; 9.9 per cent excess over central India; 8.9 per cent deficiency over central India and 0.8 per cent deficiency over peninsular India, informed the India Meteorological Department (IMD). Monsoon has been active over northwest India in August with the country seeing 7.3 per cent excess rainfall, the weather body added.
Since June 1, there has been 3 per cent excess rainfall over the country; 13 per cent deficiency over east and northeast India; no excess over northwest India; 9 per cent excess over central India and 20 per cent over the South Peninsula.
Active monsoon has led to 16 per cent excess rain over Delhi since June 1, 42 per cent excess over Ladakh and 47 per cent excess over Rajasthan.
Despite heavy rainfall and flash floods reported in parts of Himachal Pradesh and Uttarakhand, they continue to have 21 per cent and 4 per cent deficiency respectively for the monsoon season so far.
Punjab has a 30 per cent deficiency while Haryana has 18 per cent despite the latter recording 34 per cent excess in August.
IMD’s cumulative standardised precipitation index (SPI) for the period between July 18 and August 14 shows most districts in the Indo-Gangetic Plains, especially eastern India continue to remain mildly to severely dry.
SPI is the most commonly used indicator worldwide for detecting and characterising meteorological droughts.
According to officials at IMD, southwesterly winds were feeding moisture from Arabian Sea into the monsoon trough leading to widespread rain over north India including Himachal Pradesh, Delhi, East Madhya Pradesh, Haryana, Rajasthan and Uttarakhand on Sunday and Monday.
Low Pressure Over Central Bangladesh
A low pressure area has developed over central Bangladesh on Tuesday. The low pressure system and associated cyclonic circulation is expected to move west northwest wards across West Bengal causing very heavy rain over east India. The low pressure area is thereafter expected to cross Jharkhand, Bihar and Uttar Pradesh and bring more rain to north India.
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Heavy to very heavy rainfall (6.45 cm to 20 cm) with extremely heavy rain (over 20 cm) occurred at isolated places over Tripura, Meghalaya; Heavy to very heavy rainfall at isolated places over Uttarakhand, East Rajasthan, Jammu and Kashmir, Nagaland, Jharkhand, Telangana, Assam , Rayalaseema; Heavy rainfall at isolated places over Himachal Pradesh, Delhi, East Madhya Pradesh, Haryana, Marathwada, Bihar, Tamil Nadu, Interior Karnataka, Coastal Andhra Pradesh and Yanam between Monday and Tuesday.
Patchy Rain To Continue Over NW India Till August 26
“The monsoon trough has been mostly near Delhi in August. Patchy rain will continue over northwest India at least till August 26. A low pressure area that has developed over Bangladesh will also travel northwestwards over central India and further move towards south Rajasthan and Gujarat. Rain over north India will continue until the excess of monsoon trough remains in its normal position over the Indo-Gangetic Plains,” said Mahesh Palawat, vice president, climate and meteorology at Skymet Weather.