Rainfall

June 2024: District wise rainfall in India’s SW Monsoon

In the just concluded month June 2024, the first month of India’s South West 2023 monsoon, India received 147.2 mm rainfall, 11% below the normal June rainfall of 165.3 mm as per India Meteorological department. In June 2023 rainfall was 148.6 mm (10% below normal)[i], in June 2022 the rainfall was 152.3 mm (8% below normal)[ii], in June 2021, the rainfall was 182.9 mm[iii] (about 11% above normal) and  in June 2020, the rainfall was 196.9 mm (about 18% above normal) and in June 2019 it was 33% below normal. So in six years from 2019 to 2024, India had below normal rainfall in 4 years in June, and above normal in two years (2020 and 2021). Six times in last ten years and nine times since 2008 June rainfall was below normal.

However, the distribution of rainfall has been far from normal in June 2024, both temporally and spatially.

Continue reading “June 2024: District wise rainfall in India’s SW Monsoon” →
Rainfall

Pre Monsoon 2024 season: District wise rainfall in India

In the just concluded three month pre monsoon season (March 1 to May 31, 2024) India received 125.9 mm (146.6 mm in Pre Monsoon 2023[i]) rainfall, 4% below (12% above in per monsoon 2023) the normal rainfall of 130.6 mm as per the India Meteorological Department (IMD). In 2020[ii] , 2021[iii] and 2022[iv] India received 158.5 mm, 155.2 mm and 130.6 or 20% above normal, 18% above normal and 1% below rainfall respectively. So this year, India has received the lowest pre monsoon season rainfall compared to that those in previous four years.

Continue reading “Pre Monsoon 2024 season: District wise rainfall in India” →
Rainfall

SW Monsoon 2023: District wise rainfall in India

In the just concluded South West Monsoon 2023, India received 820 mm (925 mm in SW Monsoon 2022[i]) rainfall, about 94.45 % (106.5% in 2022) of the Normal SW Monsoon rainfall of 868.6 mm or 5.55% (6.5% above normal in 2022) below normal SW Monsoon rainfall as per India Meteorological Department (IMD). This rainfall will now be categorised as below normal rainfall though the distribution has been unprecedented, both temporally and spatially.

Continue reading “SW Monsoon 2023: District wise rainfall in India” →
Rainfall

June July 2023: District wise rainfall in  in India’s SW Monsoon

In the month of July 2023, the second month of India’s South West 2022 monsoon, India received 318.4 mm (327.7 mm in July 2022[i]) rainfall, 13.5 % above (16.8% above normal in July 2022) the normal July rainfall of 280.5 mm as per India Meteorological department. In July 2021, the rainfall was 266.1 mm[ii], about 6.7% below normal and  in July 2020, the rainfall was 257.1 mm[iii], or about 9.9% below normal.

Continue reading “June July 2023: District wise rainfall in  in India’s SW Monsoon” →
Rainfall

Winter 2023: District wise Rainfall in India

In the just concluded Winter Season 2023 (January 1 2023 to February 28 2023), as per India Meteorological Department (IMD), India received 45% below Normal Rainfall (it was 44% above normal rainfall in winter 2022[i] and 32% below normal rainfall in winter 2021[ii]). This is coming on top of 6.5% above normal in SW Monsoon 2022[iii] and 19% above normal rainfall in Post Monsoon season 2022[iv].

Continue reading “Winter 2023: District wise Rainfall in India” →
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.

Continue reading “Post Monsoon 2020: State wise Rainfall” →