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

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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Indian Meteorological Department · Monsoon · Rainfall

District Wise rainfall in India in June 2020

Here we present the rainfall figures from India Meteorological Department in the just concluded month of June 2020, the first month of SW Monsoon 2020. The overall rainfall at all India level in June 2020 was 196.2 mm, 18% above normal rainfall in the month at 166.9 mm. It was 33% deficit last year.

This is India’s wettest June 12 years, The Times of India reported on July 1, 2020. Agriculture Ministry Data shows that sowing is 68% higher at 31.56 m ha. The June rainfall was 202 mm in 2008, the rainfall this year is the highest since then. All four IMD regions (Northwest, Central, South, East & NE) have recorded surplus rainfall, the surplus is the highest in Central (30.5% surplus) and E-NE (15.7%) regions. North West India had the lowest surplus at 3.5%. IMD Head Mrutyunjay Mohapatra said that whole of India was covered by monsoon on June 26, 12 days ahead of the normal date of July 8.

State wise rainfall Three states had large excess rainfall (above 60% surplus rainfall), namely Bihar, Madhya Pradesh and Sikkim. Eight states/UTs (Union Territories) had excess rainfall (20-59% surplus): Assam, Meghalaya, UP, Chhattisgarh, Maharashtra, Telangana, Andhra Pradesh & Andaman and Nicobar. Nine had deficient rainfall (20-59% deficit): Lakshadweep, Mizoram, Manipur, J&K, Ladakh, Himachal Pradesh, Delhi, Dadar & Nagar Haveli. Rest of India had Normal Rainfall. Continue reading “District Wise rainfall in India in June 2020”

Wetlands

J&K Wetlands Overview 2019: New Threats Looming, Old Remain Unresolved

Jammu and Kashmir has many wetlands of national importance and international recognition. These water bodies are critical source of livelihood and job opportunities for a large number of population in form of fishing, farming, tourism etc. Moreover, most of the wetlands in the region fall under Central Asian Flyway Zone (CAF) and visited by lakhs of migratory and endangered birds during their annual migration march. These wetlands areas also provide safe refuge to native vegetation and wild animals. Their protection is crucial to combat the dual impact of climate change, water scarcity and flooding.  

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Cloud Burst

Cloud Bursts 2019: Jammu Kashmir, Arunachal Pradesh, Sikkim

Cloud burst incidents are on the increase across Himalayan states. The states of Uttarakhand and Himachal Pradesh have faced 23 and 16 cloud burst incidents in the south west monsoon 2019. This account compiles such reports from Jammu Kashmir (J&K) and north eastern Himalayan states.

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CWC - Central Water Commission

Overview of CWC Flood Forecasting Sites 2019: North India

Flood forecasting is an important activity during monsoon, considering the huge and increasing flood prone area, flood frequency, intensity and flood damages. Accurate and timely flood forecasting can hugely help reduce the damages due to floods. Central Water Commission (CWC) is the only agency responsible for flood forecasting in India. To understand the CWC’s flood forecasting better, we have compiled the list of the various flood, inflow forecasting sites and flood monitoring sites in India.

In this compilation, we have given state wise list of CWC’s flood forecasting, flood monitoring and inflow forecasting sites in North India, comprising of states of Jammu & Kashmir, Punjab, Haryana, Himachal Pradesh, Uttarakhand, Uttar Pradesh, Delhi and Chandigarh. It includes available details like name of river, sub basin, Warning level (WL), Danger Level (DL), High Flood Level (HFL), Full Reservoir Level (FRL), Maximum Water Level (MWL), as applicable. As we see below, there are many gaps in this basic information for the sites that are part of CWC’s list. A similar zonewise overview of CWC’s sites was compiled in 2018, which can be seen here. Overview of CWC Flood Forecasting Sites 2018: North India. We have brought this updated compilation for 2019 as there are large number of changes as ou can see.

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Sand Mining

Sand Mining 2018: Is Illegal Sand Mining A National Menace?

We have presented through separate articles, overview of sand mining issues of Punjab, Uttar Pradesh, Madhya Pradesh, Rajasthan, Gujarat, Maharashtra, Tamil Nadu, Karnataka, Kerala, Telangana-Andhra Pradesh, East India and North East India, in addition to one on murders, violence, threats and infrastructure damages due to illegal sand mining. This compilation tries to throw some light on the sand mining related issue of 2018 in remaining states with the help available media reports.

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Climate Change

Feb 2019 Hailstorm, Snowfall Affects Life in Northwest India

Since the beginning of 2019, there have been couple of incidents of hailstorm in Haryana and Punjab. The region has also seen good rainfall in January. The hilly states of Jammu & Kashmir, Himachal Pradesh and Uttrakhand have been repeatedly facing heavy snowfall events gripping the large parts of North India in cold waves.

The initial rains and snowfall were seen usual events and considered as beneficial for rabi crops and water demands. However the unusual hailstorm accompanied by heavy rainfall In January 2019 and again on Feb 7-8, 2019 have caused significant damage to standing crops in large part of Haryana, Punjab and Western parts of Uttar Pradesh.

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Dams · Floods

Overview of CWC Flood Monitoring Sites 2018: INDIA

Central Water Commission is the only agency doing flood forecasting in India. As per CWC’s Flood Forecasting website[i] the Data Flow Map has information about 226 Flood Forecast Sites in the country comprising of 166 Level Forecast Sites and 60 Inflow Forecast Sites. It also monitors 700 Flood sites, information made available through List Based Exploration and Hydrograph View, but no flood forecasting is done for these sites.

In order to better understand the CWC’s flood monitoring and forecasting work, SANDRP has published report of CWC’s Level Forecast, Inflow Forecast and level monitoring sites in 5 zones of North India[ii], North East India[iii], East India[iv], South India[v] and West India[vi].  Through this report, we have presented all the data at one place with links to separate zone wise reports with detailed description.

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