Monsoon · Rainfall

High Rainfall days in India’s districts in July 2022

For July 2022, an analysis of the daily district wise rainfall data from India Meteorological Department (IMD) shows that there were 809 (717 in July 2021) instances when district rainfall of a day was above 50 mm. [Considering that the normal monthly rainfall of India July is 285.3 mm, the average daily rainfall in this month is about 9.2 mm.] Such high rainfall instances included 663 (595 in July 2021) instances when rainfall was 50-100 mm, 107 (98 in July 2021) instances when it was 100-150 mm, 28 (17 in July 2021) times it was 150-200 mm and 16 (7 in July 2021) times above 200 mm. Interestingly, in June 2022[i] there were twenty seven instances when rainfall was above 200 mm, when the rainfall is supposed to be much below July rainfall. As noted in detailed article[ii], the July 2022 rainfall all over India was 16.8% above normal.

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Monsoon · Rainfall

June July 2022: District wise rainfall in India’s SW Monsoon

In the just concluded month of July 2022, the second month of India’s South West 2022 monsoon, India received 327.7 mm rainfall, 16.8% above the normal July rainfall of 280.5 mm as per India Meteorological department. In July 2021, the rainfall was 266.1 mm[i], about 6.7% below normal and  in July 2020, the rainfall was 257.1 mm[ii], or about 9.9% below normal.

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Monsoon · Rainfall

June 2022: High Rainfall district days in India’s SW Monsoon

An analysis of the daily district wise rainfall data from India Meteorological Department (IMD) for the month of June 2022, the first month of India’s South West Monsoon 2022 shows that there were 462 instances (442 in June 2021) when district rainfall of a day was above 50 mm. This is high considering that the rainfall of India in June 2022 was 152.3 mm[i], or daily average rainfall is about 5 mm. The high rainfall instances in June 2022 included 339 (371 in June 2021) instances when rainfall was 50-100 mm, 68 instances (59 in June 2021) when it was 100-150 mm, 26 (5 times in June 2021) times it was 150-200 mm and 29 (7 times in June 2021) times above 200 mm.

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Monsoon · Rainfall

June 2022: District wise rainfall in India’s SW Monsoon

In the just concluded month June 2022, the first month of India’s South West 2022 monsoon, India received 152.3 mm rainfall, 8% below the normal June rainfall of 165.3 mm as per India Meteorological department. In June 2021, the rainfall was 182.9 mm[i], about 11% above normal and  in June 2020, the rainfall was 196.9 mm, or about 18% above normal and in June 2019 it was 33% below normal.

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Monsoon · Rainfall

High Rainfall days in India’s districts in SW Monsoon 2021

An analysis of the daily district wise rainfall data from India Meteorological Department (IMD) for India’s South West Monsoon 2021 shows that there were 2079 instances when a district rainfall of a day was above 50 mm. Such high rainfall instances included 1712 instances when rainfall was 50-100 mm, 288 instances when it was 100-150 mm, 53 times it was 150-200 mm and 26 times above 200 mm. Out of 694 districts of India, 527 districts or, about 76% of the districts experienced such high rainfall days during SW monsoon 2021.

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Monsoon · Rainfall

Heavy Rainfall in India in Oct-Nov 2021

India has seen rather heavy rainfall in October and November 2021, with October All India Rainfall being 33% above normal and November rainfall being record breaking 86% above normal. The combined Oct + Nov Rainfall was 48% above normal, and by Dec 7, as we write this, it is already 53% above normal for the period from Oct 1 to Dec 7, 2021.

While lingering South West Monsoon brought large part of the excess rainfall in first half of October, the unusually active North East Monsoon with continuous supply of moisture from Bay of Bengal has been the main reason for the high rainfall since late October. The onset of La Nina has also contributed to this and with La Nina forecast to remain in place till March 2022, we are in for continued wet spell in South India, it seems. IMD has already forecast above normal rainfall in South Karnataka during Dec 2021 to Feb 2022.

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Monsoon

Unprecedented October 2021 Rainfall in Uttarakhand

Uttarakhand has seen unusual rainfall episode in the month of October 2021. The extreme rains during October 17 to 19 across the state and particularly at several places in districts under Kumaon division have been termed as highest rainfall in the recorded history as per Meteorological Circle (MC), Dehradun. This account is an attempt to document the historical rainfall events caused by combination of low pressure and western disturbance (WD) weather phenomena.

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Monsoon · Rainfall

High Rainfall days in India’s districts in Sept 2021

An analysis of the daily district wise rainfall data from India Meteorological Department (IMD) for the month of September 2021, the last month of India’s South West Monsoon 2021 shows that there were 489 instances when district rainfall of a day was above 50 mm. The normal monthly rainfall of India for Sept is 170.2 mm and actual rainfall was a huge 34.96% above normal at 229.7 mm[i], the actual average daily rainfall in this month was about 7.66 mm. Such high rainfall instances included 374 instances when rainfall was 50-100 mm, 84 instances when it was 100-150 mm, 20 times it was 150-200 mm and eleven times above 200 mm.

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Monsoon · Rainfall

SW Monsoon 2021: District wise rainfall in India

In the just concluded South West Monsoon 2021, India received 874.6 mm rainfall, about 99.32% of the Normal SW Monsoon rainfall or just 0.68% less than the normal SW Monsoon rainfall of 880.6 mm as per India Meteorological department. This rainfall will now be categorised as normal rainfall though till the beginning of Sept 2021, the rainfall at national level was 10% below normal. The massive 34.96% surplus rainfall in Sept 2021, thanks to a number of circulations contributed from the Bay of Bengal, ending with Cyclone Gulab and now possibly Cyclone Shaheen has contributed to wipe out the deficit.

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Monsoon · Rainfall

High Rainfall days in India’s districts in August 2021

An analysis of the daily district wise rainfall data from India Meteorological Department (IMD) for the month of Aug 2021, 3rd month of India’s South West Monsoon 2021 shows that there were 431 instances when district rainfall of a day was above 50 mm. The normal monthly rainfall of India Aug is 258.2 mm and actual rainfall was a huge 24.13% below normal at 195.9 mm[i], the actual average daily rainfall in this month was about 6.45 mm. Such high rainfall instances included 371 instances when rainfall was 50-100 mm, 48 instances when it was 100-150 mm, 11 times it was 150-200 mm and just once above 200 mm. Interestingly, in June 2021[ii] and July 2021[iii] there were seven instances when rainfall was above 200 mm, when the rainfall is supposed to be much below July rainfall. As noted in detailed article[iv], the July 2021 rainfall all over India was 6.7% below normal.

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