1-Jan-2021: Flash Flood Guidance Services launched; the first of its kind for South Asian countries namely India, Bangladesh, Bhutan, Nepal and Sri Lanka

Earth System Science deals with the Earth system's five components—Atmosphere, Hydrosphere, Cryosphere, Lithosphere, and Biosphere, and their complex interactions. The Ministry of Earth Sciences (MoES) holistically addresses all the aspects relating the Earth System Science for providing weather, climate, ocean, coastal state, hydrological and seismological services. The services include forecasts, warnings and detection for various natural disasters like tropical cyclones, storm surge, floods, heatwaves, thunderstorm and lightning and earthquakes etc. MoES is also mandated to conduct ocean survey and exploration for living and non-living resources and explore all the three poles (Arctic, Antarctic and Himalayas). The services provided by MoES are effectively used by various agencies and state governments for saving human lives and minimising damages due to natural disasters.

The significant milestones accomplished in 2020, under the five major schemes are highlighted below:

Atmospheric and Climate Research-Modelling Observing Systems and Services (ACROSS)

Accurate and timely prediction of the tropical cyclones Amphan, Nisarga and Nivar by the India Meteorological Department (IMD), combined with fieldwork by disaster management agencies, has helped save thousands of precious lives. The track and intensity forecasts of tropical cyclones have improved considerably in the past few years. Errors in the 24-hour forecast in track prediction and the landfall have reduced from 141 km to 73 km, and from 99 km to 18 km, respectively between 2006 and 2020.

• Launched the Flash Flood Guidance Services was launched this year, the first of its kind for South Asian countries namely India, Bangladesh, Bhutan, Nepal and Sri Lanka.
• Augmented meteorological observational network in the country: Four significant developments to enhance India's meteorological observational network were made by IMD. These are listed below:
• Meteorological observatory of Leh was upgraded to a full-fledged Meteorological Centre. It was inaugurated by the Minister of Earth Sciences on December 29, 2020.
• Seventeen high wind speed recorders were installed at Visakhapatnam, Machilipatnam, Chennai, Goa, Cuddalore, Bhubaneswar, Kakinada, Puri, Ongole, Digha, Kavali, Haldia, Pamban, Gopalpur, Kanyakumari, Veraval, and Bhuj.
• A countrywide network of 25 Global Navigation Satellite System (GNSS) stations for Earth and atmospheric studies was setup. These have been installed and commissioned to derive integrated precipitable water vapour.
• The phase six of Winter Fog Experiment (WIFEX) is being conducted at IGI Airport, New Delhi and Hissar from November 2020 to March 2021.
• Established 102 new District Agro-Meteorological Field Units in 2020. This is in addition to 130 Agromet Field Units. Experimental block-level Agromet Advisory bulletins were initiated for ~1200 blocks on each Tuesday and Friday in regional languages.
• Launched the mobile application 'Mausam' on July 27, 2020, by the Hon'ble Minister of Earth Sciences.
• Worked towards establishing an Atmospheric Research Test Bed (ART): MoES acquired ~100 acres of land from Madhya Pradesh State Government for establishing an ART at Silkheda village in Sehore District of Madhya Pradesh. The ART programme is a highly focused observational and analytical research effort that will compare observations with model calculations in the interest of accelerating improvements in both observational methodology and monsoon prediction models.
• Provided Global Ensemble Forecast System (GEFS) of 21 members for ten days to the International Grand Global Ensemble (TIGGE) global archive from July 01, 2020.
• Developed a method for probabilistic forecasting of the disease incidences in extended range time scale (2–3 weeks in advance) over India. It is based on an unsupervised pattern recognition technique that uses meteorological parameters as inputs that can be applied to any geographical location over India. Based on this system, operational forecasts will be prepared from 2021 monsoon season.
• Developed a very high-resolution (400 m) operational air quality prediction system to predict extreme air pollution events in Delhi and issue timely warnings to take necessary steps as per the newly designed Graded Response Action Plan (GRAP) of Government of India. This system was developed jointly by scientists of MoES and the National Centre for Atmospheric Research (NCAR), USA.
• Published a new open access book on Assessment of Climate Change over the Indian Region in June 2020. This is the first climate change report for the Indian region from MoES. It discusses the influence of human-induced global climate change over the Indian subcontinent, the adjoining Indian Ocean, the Himalayas on the regional monsoon.
• Established MMDRPS (multi-mission meteorological data receiving and processing system) for INSAT-3D, INSAT-3DR and INSAT-3DS satellites through an MoU with M/s Antrix Corporation, Indian Space Research Organisation (ISRO). Dedicated New Earth stations have been setup under MMDRPS Project, which has the capability to receive the data from INSAT-3D, INSAT-3DR and upcoming INSAT-3DS satellites. IMD has hosted Real-Time Analysis Product and Information Dissemination (RAPID) for visualisation and analysis tool for satellite data on a real-time basis.
• Started receiving and utilising many new observations in its global and regional atmospheric data assimilation system during this period at National Centre for Medium Range Weather Forecasting (NCMRWF), Noida. Global Navigation Satellite System–Radio Occultation (GNSS-RO) data from platforms of KOMPSAT-5, COSMIC-2, METOP-C, PAZ, FY-3C & FY-3D etc., wind profiler observations over Europe etc. are such new global data sets which are being assimilated operationally in global data assimilation system.
• Upgraded global and regional data assimilation (DA) system to incorporate scientific and technological advancements. The new DA system has the capability to assimilate some of the cloud-affected satellite microwave observations. Two high-resolution reanalysis data sets were generated by NCMRWF. The first dataset is regional for 40 years (1979-2018) over the Indian region at 12 km horizontal resolution made using NCUM model. The second dataset is global for 20 years (1999-2018) at 25 km resolution using NGFS system.

Ocean Services, Modelling, Application, Resources and Technology (O-SMART)

• Disseminated advisories of Potential Fishing Zone continuously from January to November 2020. The advisories were issued in smart-map and multilingual texts every day, subject to availability of satellite data, fishing-ban, and adverse sea-state.
• Launched Small Vessel Advisory and Forecast Services System (SVAS) to provide ocean state information to small fishing vessels that ply the coastal waters of India.
• Achieved certificate of recognition and certificate of appreciation for ’tsunami ready’ by the Intergovernmental Oceanographic Commission (IOC)-UNESCO. It was conferred to Venkatraipur and Noliasahi village communities in Odisha, and to the officials of the Odisha State Disaster Management Authority (OSDMA) through a virtual event on August 07, 2020. The certification is a first-of-its-kind in the Indian Ocean region.
• Launched Digital Ocean, an innovative web-application project to manage ocean data. It was inaugurated by Minister for Earth Sciences on December 29, 2020.  It provides a dynamic framework to efficiently integrate and manage heterogeneous ocean data along with advanced visualisation (including 3D and 4D animations) and analysis tools.
• Prepared a coastal water quality index map for Andhra Pradesh coast based on data from cruise conducted in August 2020.
• Analysed shoreline change rate for the entire Indian coast using Indian satellite images and field measurements.  526 shoreline change maps (scale 1:25000) were generated using standard protocol using eleven data sets for 1990-2018.
• Developed an integrated flood warning system for Mumbai (iFLOWS-Mumbai) in collaboration with the Disaster Management Department, Municipal Corporation of Greater Mumbai (MCGM). It was launched on June 12, 2020, by Hon'ble Minister for Earth Sciences and Hon'ble Chief Minister of Maharashtra.
• Moored six deep-sea buoys to provide open ocean data to be disseminated in real-time to Indian National Center for Ocean Information Services (INCOIS), Hyderabad and IMD to be used for tsunami early warning.
• Commissioned a Low-Temperature Thermal Desalination plant at Kalpeni, Lakshadweep in January 2020.
• Developed experimental scale mass culture of marine Spirulina in 2-tonne raceway with F/2 for production of lutein from marine microalgae. Lutein is pharmaceutically important. The technology was transferred to M/s Vectrogen Biologicals Private Limited, Hyderabad through National Research and Development Corporation (NRDC).
• Completed the indigenisation of drifting buoy with Indian National Satellite System (INSAT)communication. The technology licensing agreement has been signed with two Indian industries under the NRDC for commercialisation.

Polar and Cryosphere Research (PACER)

• Completed all scientific projects and logistics operations of the 39th Indian Antarctic expedition. Stations were resupplied for food and provisions, fuel, spares, etc., after which the expedition vessel MV Vasiliy Golovnin sailed for return on March 26, 2020.
• Conducted an expedition to the Chandra basin in the Himalayas during September-October 2020. Various field activities were conducted such as stake networking, snow pits measurements for snow and ice accumulation and ablation, discharge site maintenance, water level data collection, collecting automatic weather station data and its maintenance, observing debris cover influence on the glacier surface melting, and GNSS survey for snout monitoring and glacier ice velocity.
• Organised the 3rdmeeting of the BRICS working group on the ocean and polar science and technology online on September 23, 2020. About 50 delegates from Brazil, Russia, India, China, and South Africa (BRICS) joined the meeting, and 21 scientific presentations were made. Participants deliberated upon the research programs and future activities of each BRICS country in the ocean and polar sciences, bilateral and multilateral cooperation initiatives between BRICS countries, a roadmap for the working group, priority research areas and topics for the next BRICS-(Science, Technology and Innovation) STI call, BRICS joint cruises, mutual cooperation and capacity building plans, action areas, and involvement in the United Nation's Decade of Ocean Sciences for Sustainable Development.

Seismology and Geoscience Research (SAGE)

• Located 1,527 earthquakes in and around India from January to November 2020, of which 65 events were of magnitude ≥5.0, 277 events were micro, and remaining events were small.  The seismic microzonation work of four cities, namely, Bhubaneswar, Chennai, Coimbatore, and Mangalore, started in 2018and is now in an advanced completion stage.
• Participated in the Integrated Ocean Drilling Program(IODP)-378 expedition in the far southern Pacific Ocean from January 03 to February 06, 2020. The expedition aimed to investigate the record of Cenozoic climate and oceanography through a drilling transect.
• Established Isotope Geochemistry Facility (IGF) at the National Centre for Earth System Science (NCESS), Kerala. It can host a 213-nanometer neodymium-doped yttrium aluminium garnet (Nd-YAG) laser ablation microprobe which can be coupled with a quadrupole inductively coupled plasma mass spectrometry (ICP-MS) and a multi-collector ICP-MS. It can help study the internal structure of various accessory minerals such as zircon, monazite, rutile etc. by using high-resolution imaging techniques such as scanning electron microscope and electron probe micro-analyser. This powerful combination of methods is now routinely applied in NCESS-IGF to resolve several intriguing geological questions about the Indian shield. It will also help understand Precambrian terranes' deep-time evolution, such as the southern granulite terrain in South India.
• Integrated stress and fracture datasets which yielded new insights into reservoir triggered seismicity in the Koyna intraplate seismic zone, Maharashtra, under the scientific deep drilling project.

REACHOUT

• Rolled out special proposals in earth science applications: MoES announced a special call for research proposals under the artificial intelligence/machine learning applications in Earth sciences. Nearly 200submissions were received and are currently under assessment.
• Training to enhance the skilled global workforce in Earth sciences: The ITCO Ocean(International Training Centre for Operational Oceanography) continued its operations and was recognised as a regional training centre under the UNESCO-Ocean Teacher Global Academy 2 for three years (2020 – 2023). It conducted three training programs with 1,731 participants between January and November 2020, of which 1,150 are Indian nationals, and 581 were international participants from 73countries of the world. The gender ratio of participants of training programs was encouraging with a male: female ratio of 987: 744.
• Science communication, dissemination and engagement: MoES successfully conducted a series of webinars of live talks entitled 'Earth Sciences Popular Lectures" from May 2020.About 38 live talks on a variety of topics were delivered and are made available on YouTube.
• Workshops and Conferences for broader public outreach: MoES organized three collaborative international workshops and conferences, under the DESK (development of skilled workforce in Earth system sciences)program. It also conducted seminars to enhance awareness about World Water Day, World Environment Day, World Ozone Day, and the National Pollution Control Day.
• Fifty-Fold gains to the agricultural workforce of India: MoES engaged the National Centre for Applied Economic Research (NCAER), Delhi, to study the economic benefits of the Monsoon Mission (MM) and High-Performance Computing Facilities (HPC)by estimating the income gain to Indian farmers, livestock owners and fisherfolk by adopting weather and ocean state forecasts provided by MoES. The report highlighted that India's investment of nearly 1,000 crores in the Monsoon Mission (MM) and High Performance Computing (HPC) programs would yield benefits worth rupees 50 thousand crores to ~10.7 million below poverty line (BPL) agricultural households and 0.53 million BPL fisherfolk households in the country in 5 years. Moreover, the report highlighted that ~26.6 per cent of the economic gains are attributed to women workforce of the country.
• Launched the Knowledge Resources Centre Network (KRCNet): It is a unique initiative of the MoES. It was inaugurated by Minister for Earth Sciences, Dr Harsh Vardhan, on July 27, 2020. It aims to integrate all knowledge and intellectual resources of MoES and its institutes on a single, dynamic, web portal. Under the Digital India Initiative of the Government of India, the portal is a one-of-its-kind digital system to collect, collate, catalogue, store and retrieve the knowledge products of MoES and its institutes 24X7 from around the globe.

International collaborations

The MoES collaborated with several scientific international institutes to broaden the research scope in all fields of earth sciences through trans-national joint projects and developmental work. Some of the important international collaborations are highlighted below:

• Signed a Memorandum of Understanding (MoU) with the National Ocean and Atmospheric Administration (NOAA), USA on Earth sciences and observations. It entered force in 2010 after the exchange of a diplomatic note. The agreement valid was for ten years; and has been renewed on October 23, 2020, through a virtual event. The Indian ambassador to the United States, Shri Taranjeet Singh Sandhu signed the MoU on behalf of MoES.
• Signed an MoU with the United States Geological Survey (USGS) on November 01, 2018, towards collaborative research in seismology. A pilot project to develop an Earthquake Early Warning System for India is under consideration. Towards this goal, a virtual meeting was organised on September 01, 2020, which had representation from the USGS, US Embassy in Delhi, Director of the National Center for Seismology (NCS), New Delhi, and senior scientists of MoES.
• Completed three projects jointly funded by the MoES and Natural Environment Research Council (NERC), UK. The projects are under the Sustaining Water Resources (SWR) programme for food, energy and ecosystem services in India.
• Signed a letter of Intent with the Norwegian Ministry of Climate and Environment, and the Norwegian Ministry of Foreign Affairs on February 18, 2020, towards 'Integrated Ocean Management and Research Initiative'. This was a follow-up to the joint task force on the blue economy for sustainable development under an MoU signed between India and Norway in January 2019.
• Hosted the Secretary-General, BIMSTEC (Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation) at the BIMSTEC Centre for Weather and Climate (BCWC) by the NCMRWF on February 13, 2020. The first meeting of the BIMSTEC-Intergovernmental expert group on disaster management was organised by the National Disaster Management Authority (NDMA) during February 14, 2020, at Puri, Odisha.
• The RIMES (Regional Integrated Multi-Hazard Early Warning System) an international and inter-governmental institution chaired by Secretary, MoES continued to provide uninterrupted services to its Member and collaborating states.
• Signed an MoU with the National Centre of Meteorology, Ministry of Presidential Affairs, UAE for scientific and technical cooperation on November 23, 2020.

3-Dec-2020: Cyclonic Storm ‘Burevi’ over Sri Lanka (Cyclone Warning for South Tamil Nādu and South Kerala coasts: Red Message)

According to the Cyclone Warning Division of the India Meteorological Department (IMD):          

The Cyclonic Storm ‘Burevi’ over Sri Lanka moved west-northwestwards with a speed of 11 kmph during past six hours and lay centered at 0530 hrs. IST of 03rd December over Sri Lanka near Lat. 9.0°N and Long. 80.3°E, about 40 km east of Mannar, 120 km east-southeast of Pamban (India) and 320 km east-northeast of Kanyakumari (India). It is very likely to move west-northwestwards and emerge into Gulf of Mannar near Mannar coast during next 3 hours.

The Cyclonic Storm with wind speed of 70-80 gusting to 90 kmph would be centered very close to Pamban around noon of 3rd December. It would then move nearly west-southwestwards across Pamban area by afternoon and cross south Tamil Nādu coast between Pamban and Kanyakumari during 3rd December night and 4th December early morning as a Cyclonic Storm with wind speed of 70-80 gusting to 90 kmph. Thus its impact on south Tamil Nādu coastal districts is very likely to commence from 3rd December forenoon initially over Ramanathapuram district and gradually towards Kanyakumari district.

Warnings:

1. Rainfall
   • Heavy to very heavy rainfall at a few places with isolated Extremely heavy falls very likely over south Tamil Nādu (Ramanathapuram, Thoothukudi, Tirunelveli,  Kanyakumari, Tenkasi and Sivagangai districts) and over south Kerala (Thiruvananthapuram, Kollam, Pathanamthitta and Alappuzha) on 3rdDecember and isolated heavy to very heavy rainfall likely over south Tamil Nādu and south Kerala on 4th December, 2020.
   • Heavy to very heavy rainfall at isolated places very likely over north Tamil Nādu, Puducherry, Mahe & Karaikal and north Kerala on 3rd December, isolated heavy rainfall on  4th December.
   • Heavy rainfall at isolated places very likely over south Coastal Andhra Pradesh and Lakshadweep on 3rd& 04th December.
2. Wind warning
   • Squally wind speed reaching 55-65 kmph gusting to 75 kmph very likely over Gulf of Mannar, Comorin Area and along and off south Tamil Nādu coast (Ramanathapuram, Thoothukudi, Tirunelveli and Kanyakumari districts) and south Kerala coast (Thiruvananthapuram, Kollam, Pathanamthitta and Alappuzha districts) and west Sri Lanka coast. It will gradually increase becoming 70-80 kmph gusting to 90 kmph from 3rd December forenoon for subsequent 24 hours and decrease thereafter.
   • Prevailing Gale wind speed reaching55-65 kmph gusting to 75 kmph over southwest Bay of Bengal and along & off Sri Lanka coast will continue for next 12 hours and gradually decrease thereafter.
   • Squally wind speed reaching 45-55 kmph gusting to 65 kmph very likely over Lakshadweep-Maldives area and adjoining southeast Arabian Sea on 3rdand 4thDecember.
3. Storm Surge:
   • Storm surge of about 1.0 m height above astronomical tide is very likely to inundate low lying areas of south coastal Tamil Nādu (Ramanathapuram, Thoothukudi, Tirunelveli and Kanyakumari districts) and northwest Sri Lanka coast during the time of landfall.
4. Sea condition
   • Sea condition is very rough to high over Gulf of Mannar, along & off south Tamil Nādu-Kerala, west Sri Lanka coast and Comorin Area on 3rdand 4thDecember.
   • Sea condition is very rough to high over southwest Bay of Bengal and along & off east Sri Lanka coast and the same will continue till mid-night of 3rdDecember and gradually improve thereafter.
   • Sea condition will be rough to very rough over Lakshadweep-Maldives area and adjoining southeast Arabian Sea during 3rd to 5thDecember.
5. Damage expected over south Tamil Nādu (Kanyakumari, Tirunelveli, Thoothukudi and Ramanathapuram districts) and south Kerala (Thiruvananthapuram, Kollam, Pathanamthitta and Alappuzha districts)
   • Damage to thatched huts.
   • Minor damage to power and communication lines due to breaking of branches.
   • Major damage to Kutcha and minor damage to Pucca roads.
   • Some damage to paddy crops, banana, papaya trees and orchards.
   • Sea water inundation in low lying areas after erosion of Kutcha embankments.
6. Fishermen warning and Action suggested
   • Total suspension of fishing operation during 3rd to 5th December over the areas as mentioned below.
   • Fishermen are advised not to venture into southwest Bay of Bengal and along & off east Sri Lanka coast on 3rd December; Comorin Area, Gulf of Mannar and south Tamil Nādu-Kerala and west Sri Lanka coasts from 3rd to 4th December,  over Lakshadweep-Maldives area & adjoining southeast Arabian Sea from 3rd to 5th December. 

Sub-Divisions	03 Dec 2020*	04 Dec 2020*
South Tamil Nādu	Rainfall at most places with heavy to very heavy rainfall at  few places and extremely heavy fall at  isolated places	Rainfall at many places with heavy to very heavy  rainfall at  isolated places
North Tamil Nādu, Puducherry &Karaikal	Rainfall at many places with heavy to very heavy  rainfall at  isolated places	Rainfall at many places with heavy fall at  isolated places
South Kerala	Rainfall at most places with heavy to very heavy rainfall at  few places and extremely heavy fall at  isolated places	Rainfall at many places with heavy to very heavy  rainfall at  isolated places
North Kerala & Mahe	Rainfall at most places with heavy to very heavy  rainfall  at  isolated places	Rainfall at a few places with heavy fall at  isolated places
South Coastal Andhra Pradesh	Rainfall  at a few places with heavy rainfall at isolated places	Rainfall  at a few places with heavy rainfall at isolated places
Lakshadweep	Rainfall  at many places with heavy falls at isolated places	Rainfall  at most places with heavy to very falls at isolated places

2-Dec-2020: Cyclonic Storm ‘Burevi’ over southwest Bay of Bengal (Cyclone Warning for South Tamil Nādu and South Kerala coasts: Orange Message)

The Cyclonic Storm ‘Burevi’ over southwest Bay of Bengal moved west-northwestwards with a speed of 13 kmph during past six hours and lay centered at 1730 hrs. IST of today, the 02nd December 2020 over southwest Bay of Bengal about 70 km east-northeast of Trincomalee (Sri Lanka), 290 km east-southeast of Pamban (India) and 480 km east-northeast of Kanyakumari (India).

It is very likely to move west-northwestwards and cross Sri Lanka coast around latitude 9.00N, to north of Trincomalee by midnight of 2nd December as a Cyclonic Storm with a wind speed of 80-90 kmph gusting to 100 kmph. It is very likely to move nearly west-northwestwards thereafter, emerge into Gulf of Mannar and adjoining Comorin area on 3rd December morning.

The Cyclonic Storm with wind speed of 70-80 gusting to 90 kmph would be centered very close to Pamban around noon of 3rd December. It would then move nearly west-southwestwards across Pamban area by afternoon and cross south Tamil Nādu coast between Pamban and Kanyakumari during 3rd December night and 4th December early morning as a Cyclonic Storm with wind speed of 70-80 gusting to 90 kmph. Thus its impact on south Tamil Nādu coastal districts is very likely to commence from 3rd December forenoon initially over Ramanathapuram district and gradually towards Kanyakumari district.

1-Dec-2020: Cyclonic Storm ‘Burevi’ over southwest Bay of Bengal (Cyclone Alert for South Tamil Nādu and South Kerala coasts: Yellow Message)

According to the Cyclone Warning Division of the India Meteorological Department (IMD):         

The Deep Depression over southwest Bay of Bengal moved west-northwestwards with a speed of 09 kmph during past six hours, intensified into Cyclonic Storm ‘Burevi’ and lay centered at 1730 hrs. IST of today, the 01st December 2020 over southwest Bay of Bengal near Lat. 7.9° N and Long. 84.8°E, about 400 km east-southeast of Trincomalee (Sri Lanka) and 800 km east-southeast of Kanyakumari (India).

It is very likely to intensify further during next 12 hours. It is very likely to move west-northwestwards and cross Sri Lanka coast between latitude 7.50N and 9.00N, close to Trincomalee during evening/night of 2nd December as a Cyclonic Storm with a wind speed of 75-85 kmph gusting to 95 kmph. It is very likely to move nearly westwards thereafter, emerge into Gulf of Mannar and adjoining Comorin area on 3rd December morning. It would then move nearly west-southwestwards and cross south Tamil Nādu coast between Kanyakumari and Pamban around early morning of 4th December.

Warnings:

1. Rainfall
   • Heavy to very heavy rainfall at a few places with isolated Extremely heavy falls very likely over south Tamil Nādu (Kanyakumari, Tirunelveli, Thoothukudi, Tenkasi, Ramanathapuram and Sivagangai) on 2nd and 3rd December, 2020; over south Kerala (Thiruvananthapuram, Kollam, Pathanamthitta and Alappuzha) on 3rd December and isolated heavy to very heavy rainfall likely over south Tamil Nādu on 2nd & 4th December 2020 and south Kerala on 3rd & 4th December, 2020.
   • Heavy to very heavy rainfall at isolated places very likely over north Tamil Nādu, Puducherry, Mahe & Karaikal and north Kerala on 2nd & 3rd December, isolated heavy rainfall on 4th December and isolated heavy rainfall over coastal Tamil Nādu on 1st December, 2020.
   • Heavy rainfall at isolated places very likely over south Coastal Andhra Pradesh on 2nd & 03rd December and over Lakshadweep on 03rd & 4th December, 2020.
2. Wind warning
   • Squally wind speed reaching 60-70 kmph gusting to 80 kmph very likely over southwest and adjoining Southeast Bay of Bengal during next 12 hours.
   • It would gradually increase and becoming 70-80 kmph gusting to 90 kmph over southwest Bay of Bengal, along & off Sri Lanka coast from morning to night of 2nd December and decrease thereafter.
   • Squally wind speed reaching 45-55 kmph gusting to 65 kmph very likely over Comorin Area, Gulf of Mannar and along and off south Tamil Nādu coast (Kanyakumari, Tirunelveli, Thoothukudi and Ramanathapuram districts) and south Kerala coast (Thiruvananthapuram, Kollam, Pathanamthitta and Alappuzha districts) from 2nd December forenoon. It will gradually increase becoming 55-65 kmph gusting to 75 kmph from 2nd December evening and 70-80 kmph gusting to 90 kmph from evening of 3rd December for subsequent 12 hours and decrease thereafter.
   • Squally wind speed reaching 45-55 kmph gusting to 65 kmph very likely over Lakshadweep-Maldives area and adjoining southeast Arabian Sea from 3rd December morning for next 48 hours.
3. Sea condition
   • Sea conditions is very rough to high over southwest and adjoining Southeast Bay of Bengal and along & off east Sri Lanka coast and the same will continue till night of 2nd December and gradually improve thereafter.
   • It will be rough to very rough over Comorin Area, Gulf of Mannar & along & off south Tamil Nādu-Kerala and west Sri Lanka coast   on 2nd and very rough to high on 3rd and 4th  December.
   • Sea condition will be rough to very rough over Lakshadweep-Maldives area and adjoining southeast Arabian Sea during 3rd – 4th December.
4. Fishermen warning
   • Total suspension of fishing operation during 1st December to 4th December over the areas as mentioned below.
   • Fishermen are advised not to venture into southeast Bay of Bengal during 1st December, southwest Bay of Bengal and along & off east Sri Lanka coast  from 1st to 3rd December; Comorin Area, Gulf of Mannar and south Tamil Nādu-Kerala and west Sri Lanka coasts from 2nd to 4th December,  over Lakshadweep-Maldives area & adjoining southeast Arabian Sea from 3rd to 4th December.   
   • Fishermen out at Sea are advised to return to the coast.

Sub-Divisions	01 Dec 2020*	02 Dec 2020*	03 Dec 2020*	04 Dec 2020*
South Tamil Nādu	Rainfall at many places with heavy  rainfall at  isolated places	Rainfall at most places with heavy to very heavy rainfall at  few places and extremely heavy fall at  isolated places	Rainfall at most places with heavy to very heavy rainfall at  few places and extremely heavy fall at  isolated places	Rainfall at many places with heavy to very heavy  rainfall at  isolated places
North Tamil Nādu, Puducherry & Karaikal	Rainfall at a few places with heavy rainfall at  isolated places	Rainfall at many places with heavy to very heavy  rainfall at  isolated places	Rainfall at many places with heavy to very heavy  rainfall at  isolated places	Rainfall at many places with heavy fall at  isolated places
South Kerala	Rainfall at many places with heavy  rainfall at  isolated places	Rainfall at most places with heavy to very heavy rainfall at  isolated places	Rainfall at most places with heavy to very heavy rainfall at  few places and extremely heavy fall at  isolated places	Rainfall at many places with heavy to very heavy  rainfall at  isolated places
North Kerala & Mahe	Rainfall at many places with  heavy rainfall at  isolated places	Rainfall at many places with heavy to very heavy  rainfall at  isolated places	Rainfall at most places with heavy to very heavy  rainfall  at  isolated places	Rainfall at a few places with heavy fall at  isolated places
South Coastal Andhra Pradesh	Rainfall  at isolated places	Rainfall  at a few places with heavy rainfall at isolated places	Rainfall  at a few places with heavy rainfall at isolated places	Rainfall  at a few places
Lakshadweep	Rainfall  at a few places	Rainfall  at most places	Rainfall  at most places with heavy to very falls at isolated places	Rainfall  at most places with heavy to very falls at isolated places

The system is under continuous surveillance and the concerned state governments are being informed regularly.