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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Arunachal Pradesh

Muddy Kameng River waters & mass fish death in Oct 2021

In a development described as unprecedented, by 1030 hours on Friday, Oct 29, 2021, the waters of Kameng River in Arunachal Pradesh in North East India suddenly became dark with large amount of silt and debris and thousands of dead fish floating on the surface. A video on twitter by 1300 hours[i] showed the dark Kameng waters. (The Feature image above is from twitter post by The Arunachal Pradesh on Oct 31, 2021)

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Monsoon · Rainfall

June July 2021 District Wise SW Monsoon Rainfall in India

In the just concluded month of July 2021, India received 266.1 mm rainfall, that is 6.73% below normal July rainfall of 285.3 mm, as per India Meteorological Department (IMD). This is in contrast with June 2021 rainfall, that was almost 11% surplus over Normal rainfall. Not only that surplus has been wiped out by the July 2021 deficit, the overall June July 2021 rainfall now is 449 mm, or about 0.7% below normal rainfall of 452.2 mm, as per IMD.

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Monsoon · Rainfall

June 2021: District wise rainfall in India’s SW Monsoon

In the just concluded June 2021, the first month of India’s South West 2021 monsoon, India received 182.9 mm rainfall, 10.96% or about 11% more than the normal June rainfall of 166.9 mm as per India Meteorological department. 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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Indian Meteorological Department · Rainfall

Pre Monsoon 2021 season – State Wise, District Wise Rainfall

In the just concluded pre monsoon season (March 1 to May 31, 2021) India received 155.2 mm rainfall, 18% above the normal rainfall of 131.7 mm as per the India Meteorological Department (IMD). This is similar to the case in 2020[i] when India received 158.5 mm or 20% above normal rainfall.

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Rainfall

District wise Winter 2021 Rainfall in India

In the just concluded Winter Season (Jan 1 2021 to Feb 28 2021), as per India Meteorological Department (IMD), India received 32% below Normal Rainfall. The Normal rainfall in this two-month season is supposed to be quite low at 40.8 mm, but the actual rainfall was just 27.8 mm, which means rainfall was less than 0.5 mm per day in the season. Out of this the Rainfall in January 2021 was 20.2 mm, 17% above the normal rainfall of 17.3 mm. So in February 2021, the rainfall was 7.6 mm, against the normal rainfall of 23.5 mm, so the February rainfall was 68% below normal!

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Rainfall

Post Monsoon 2020: State wise Rainfall

According to India Meteorological Department (IMD), during the just concluded Post Monsoon Rainfall for 2020, that included rainfall during Oct-Dec months, India received 124.6 mm rainfall, 0.64% above the normal rainfall of 123.8 mm during the period. As per IMD[i] definition, the rainfall was thus normal.

This three-month period from Oct 1, to Dec 31 includes the North East Monsoon that mainly affects parts of South India including Tamil Nadu, Puducherry, Rayalseema, parts of Karnataka and Kerala. IMD declared on Jan 1, 2021 that the of NE Monsoon ended on Dec 31, 2020 with normal overall rainfall: TN had 6% above normal, Karnatak 13% above normal, Puducherry 32% above normal, Andhra Pradesh 33% above normal. However, Lakshadweep had 9% below normal and Kerala 26% below normal. This monsoon provides 48% of the annual rainfall of TN so it is most imp for that state.

The rainfall revived only towards the end of November, mainly due to two consecutive cyclones — Nivar and Burevi — both of which developed in the Bay of Bengal. While Cyclone Nivar crossed the coast close to Karaikal near Puducherry and brought heavy showers for the east and coastal districts of Tamil Nadu, Cyclone Burevi weakened before it reached land.

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Arunachal Pradesh · brahmaputra · China · Dams · Hydropower

Why is India not demanding TEIA for the Great Bend Hydro proposal of China?

While one can never be too sure what is the exact meaning of Chinese whispers, a thoughtful response has to take into account the available facts and the context. This report tries to take stock of available facts and context of this latest episode that started at the end of November 2020 and is still going on: China’s proposed massive hydropower project on the Great Bend of Yarlung Tsangpo River just before the river enters India as Siang, a tributary of Brahmaputra river. It also reviews the key media reports published on this issue.

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Cloud Burst · Dams

Cloud Bursts in Indian Himalayan Region in Pre-monsoon & Monsoon 2020

The Indian Himalayan region has been facing increased cloud burst incidents for past many years. These events are followed by flash floods, landslides causing widespread damages to human lives and properties. However the forecasting, monitoring and management efforts are lagging far behind. This state wise overview attempts to understand the trend and resultant losses from such incidents during the pre-monsoon (Apr-May) southwest monsoon season (June-Sept) 2020.

SANDRP has been highlighting the issue since 2018. The details of these can be seen by exploring the hyperlink of Uttarakhand in 2018 and 2019, Himachal Pradesh 2019, Jammu and Kashmir and North East 2019.

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