A bulletin from the Indian Meteorological Department (IMD) said that the southwest monsoon has begun withdrawing from Rajasthan and Punjab on Monday.

Trichy district (56.4 mm) received the lowest rainfall since June 1 in Tamil Nadu, which is 8% less than the normal rainfall that the district usually receives during this period every year. [17], In March 2012, following Delhi and Mumbai, RMC Chennai started installing ten 50-feet automatic rain gauge (ARG) stations to provide location-specific weather data. Visible Channel (0.65 µm) The channel (0.65µm) lies in the visible region (0.4µm - 0.7µm) of the electromagnetic spectrum which can be seen with naked eye.

RAINFALL STATISTICS Tamil Nadu (Week/Season).

CWCs at Visakhapatnam, Bhubaneshwar and Ahmedabad function under the control of the ACWCs at Chennai, Kolkata and Mumbai, respectively. During the same period, automatic message switching systems was also installed at the Chennai International Airport. The three meteorological centres in South India function at Hyderabad, Bangalore and Thiruvananthapuram serving the states of Andhra Pradesh, Karnataka, and Kerala, respectively, under the technical and administrative control of the Regional Meteorological Centre, Chennai. In addition, it maintains 13 pilot balloon observatories, 10 Rawin stations and 1 Radiosonde station. In 2003–2004, a laser ceilometer was installed at Chennai airport for reporting data on height of base of low cloud for aviation. He also held the post of meteorological reporter to the Madras government for many years, who was assisted in his work by his wife and daughter. From June 1 to September 28, Nilgiris district (1373.1 mm) has received the highest amount of rainfall in the state followed by Coimbatore (1107.9 mm). The observation came on a day when parts of the city witnessed good rainfall albeit for a short time on Monday. Designed & Developed by Indian Institute of Tropical Meteorology , Pune, India, Meteorological Services for Agriculture in India, Meteorological Services for Civil Aviation in India, Upper Air Meteorological Instrumentataion, Meteorological Telecommunication Services in IMD, Depression over northwest Bay of Bengal off Odisha coast lay centred at 2330 hrs IST of 22nd October near latitude 20.2°N and longitude 87.6°E ,about 170 km south-southwest of Sagar Islands and 340 km west-southwest of Khepupara.

By 1899, it had been relegated to gathering weather-related data. Coordinates: 13°4′7.3″N 80°14′48.33″E / 13.068694°N 80.2467583°E / 13.068694; 80.2467583, Regional Meteorological Centre, Chennai is one of the six regional meteorological centres (RMCs) of the India Meteorological Department (IMD) and is responsible for the weather-related activities of the southern Indian peninsula comprising the states of Andhra Pradesh, Telangana, Karnataka, Kerala, Tamil Nadu and the union territories of Andaman and Nicobar, Lakshadweep Islands and Puducherry. In addition, an observatory under World Wide Standardised Seismological Network (WWSSN) functions at Kodaikanal and a broadband system functions at Mangalore.

The localities where such rain gauges are to come up are Chembarambakkam, Avadi, Kolapakkam, Puzhal, Anna University, Taramani, Pallikaranai and Tambaram. Nungambakkam remained dry without recording any rainfall on Monday. In June 1995, High-Resolution Picture Transmission (HRPT) direct readout ground station was established at RMC Chennai. The other regional centres are located at Kolkata, Guwahati, Mumbai, Nagpur and New Delhi. [7], The Regional Meteorological Centre, Chennai maintains 121 surface observatories of which 53 are departmental observatories and 68 are part-time observatories. When the observatory moved to Kodaikanal, astronomical observations ceased at the Madras observatory, which was then used only for weather forecast.[2].

For the first time in the city, the department would create a mesoscale network of satellite-based automated rain gauges to cover areas within the radius of 5 km. For over a century, it was the only astronomical observatory in India that exclusively worked on the stars. The department is creating a denser automatic rain gauge network by adding 25-30 ARGs in and around Chennai. The responsibility of storm-warning task for the ports on the west coast of India from Karwar southwards too was transferred from Mumbai to Chennai in 1969.[4]. Equipped to measure humidity, rainfall and temperature, they will help make accurate forecasts, specifying the rainfall variability. The Regional Meteorological Centre, Chennai is located at 50 (New No. Show us some love! From 1861, N. R. Pogson held the post of astronomer of the observatory for 30 years. This receives AVHRR satellite imageries and TOVS data from polar-orbiting NOAA satellites. The ARGs are run on solar power. In Chennai, Mambalam received 4 cm of rain, Guindy received 4.4 cm of rain and Meenambakkam received 2.3 cm of rain on Monday, as per independent weather blogger Pradeep John, who goes by the name Tamil Nadu Weatherman on social media.

New Delhi - 110003, © Copyright Ministry of Earth Sciences, New Delhi, India The observatory, which was issuing the Madras Daily Weather Report since October 1893 and supplying the time signal throughout the Indian Telegraph system, was reduced to the status of an ordinary pilot balloon observatory in 1931. "Monsoon 2020: Scientific Issues and Challenges" by Dr M. Mohapatra, DGM, IMD on 16th October during 1600-1730 hrs IST. Although the decision to set up the DWR network was taken in the 1990s and funds allocated, the first DWR units are being installed only in the 2000s. [14] In the same period, a High Wind Speed Recorder (HWSR) was installed at the Chennai centre. Oakeley was supported by William Petrie, a member of the Madras Government, who had built an astronomical observatory at his own expense 5 years earlier in 1786.

This information is available both in English and Tamil on Tuesdays and Fridays based on the weather forecast received from the centre.[12]. Other regional systems are located at Delhi, Kolkata, Mumbai and Guwahati.[15]. [8], More than 1,400 personnel including 300 officers work in various offices under Regional Meteorological Centre, Chennai which includes 3 meteorological centres, 1 area cyclone warning centre, 1 cyclone warning centre, 6 cyclone detection radar stations and 17 aviation meteorological offices (AMOs).[9][10]. The Regional Meteorological Centre and other Meteorological Centres periodically inspects the observatories to ensure the accuracy of meteorological observations and all the instruments at the observatories are calibrated at least once in 2 years.

In 1899, R. L. Jones, a professor of physics at the Madras Presidency College, was appointed as part-time meteorologist of the observatory. Data from the Chennai Doppler weather radar is currently being used by the Chennai airport. Regional Meteorological Centre Chennai. The same year, daily weather reports started coming out at the Madras observatory. The 15-feet tall granite pillar monument weighing 10 tons, which carried the original transit equipment, is still preserved and carries the name of the architect, Michael Topping Arch, and the year AD MDCCXCII. In 2018, the IMD revealed its plan to provide tailor-made weather forecasts for various sectors including agriculture, health, railways, power, and tourism.

Office of Director General of Meteorology The city's first automatic weather station was installed at the RMC in Nungambakkam in 2007. The hydrology section at RMC Chennai periodically inspects about 2,000 rain gauge stations maintained by organisations such as railways and state governments.

The Chennai DWR is operational since 2001–2002. The department is in the process of selecting one more site. The northeast monsoon, which is the source of rainfall for Tamil Nadu, is expected to set in by mid-October, as per reports. The post was abolished in 1926 and a full-time assistant meteorologist was appointed. Join through link: https://global.gotomeeting.com/join/502768637, VAIBHAV - a global virtual summit of Overseas Indian Researchers and Academicians, is being organized from 2 - 31 October 2020, Consensus Statement on the Forecast for October to December Season 2020(Rainfall and Temperature) over South Asia issued by SASCOF-17 and CSUF on 28, Sept. 2020, TROPMET-2020 to be held during 14-17,December 2020 at NESAC, Shillong, Meghalaya, Link for Vaishvik Bhartiya Vaigyanik (Vaibhav) Summit, Virtual Press Conference on Current Status and Forecast of Monsoon 2020, Kindly download Mausam app for location specific forecast and warning, Meghdoot app for Agromet advisory and Damini app for Lightning, Message from DGM regarding COVID-19 to maintain the safety protocol. At present, the staff of Meteorological Department and of other government agencies such as Water Resources Department, manually measure the rainfall in facilities set up in some parts of the city. The city is home to one of the first modern astronomical and meteorological observatory in the East, established at Egmore before 1792. TOI:19/0830IST:Depression over Eastcentral and adjoining Westcentral & North Arabian Sea moved further westwards and weakened into a Well Marked Low Pressure Area and lay centred at 0530 hrs IST of today, the 19th October 2020 over Westcentral Arabian Sea & neighbourhood.