Lok Sabha Question No. 1778 (UNSTARRED), answered on 2025-12-10
Subject: Installation of New Weather Radars in Tamil Nadu
Ministry: EARTH SCIENCES
Asked by: Thiru Dr. S Jagathratchakan

## GOVERNMENT OF INDIA MINISTRY OF EARTH SCIENCES LOK SABHA

## UNSTARRED QUESTION NO. 1778

## TO BE ANSWERED ON WEDNESDAY, 10 TH  DECEMBER, 2025

## INSTALLATION OF NEW WEATHER RADARS IN TAMIL NADU

## 1778.       SHRI S JAGATHRATCHAKAN:

Will the Minister of EARTH SCIENCES be pleased to state:

- (a) the number and locations of new weather radars proposed to be installed in Tamil Nadu under the National Radar Augmentation Plan and whether the sites have been identified and if so, the details thereof;
- (b) the total number of weather radars currently operational in Tamil Nadu including the type of radar and year of commissioning;
- (c) the total number of weather radars that are currently present in each State, State-wise;
- (d) the number of additional weather radars proposed to be added in each State and Union Territory under the National Augmentation Plan along with the timeline set for each State under the plan; and
- (e) the details of the factors and criteria used by the Government in determining the number and location of weather radars to be installed in each State?

## ANSWER

## THE MINISTER OF STATE (INDEPENDENT CHARGE) FOR MINISTRY OF SCIENCE AND TECHNOLOGY AND EARTH SCIENCES (DR. JITENDRA SINGH)

- (a) It is proposed to install 5 weather radars with locations at Kanyakumari, Tiruchirappali, Coimbatore, Yercaud, and Ramanathapuram. Out of these five, three radars are under the  Mission Mausam & two radars are under the Tamil Nadu Government initiative through the Tamil Nadu Disaster Risk Reduction Agency.
- (b) Currently, 8 radars are operational in Tamil Nadu and adjoining States, which cover the State. The list is enclosed in Annexure-1.
- (c) Curretnly,  47 radars are in operational across India with 87% of the total area of the country coming under radar coverage. A state-wise list is given in Annexure-2.
- (d) & (e)  In the coming years, additional DWRs will be installed as per the requirement based on the following factors and criteria -
-  The entire country should be covered by radar for round-the-clock monitoring of severe weather.
-  Relatively more numbers of radars in the hilly areas, coastal areas, and metro cities, considering the vulnerability.
-  Replacement of old radars.
-  Redundancy in radar availability in the highly vulnerable areas.
-  Suitability of the location for the installation of radar.

## Annexure-1

1. S-Band  Doppler  Weather  Radar  (DWR)  at  Sriharikota,  Andhra  Pradesh,  was commissioned in  2004  and is  operated  by  the  Indian  Space  Research  Organisation (ISRO).
2. S-Band DWR Chennai at Chennai Port Authority (ChPA), Tamil Nadu, Commissioned in 2002, operated by the IMD.
3. X-Band DWR at the National Institute of Ocean Technology, Chennai, Commissioned in 2021 and operated by the IMD.
4. C- Band DWR at IGCAR, Tamil Nadu, Commissioned in 2023, operated by DAE.
5. S-Band DWR Karaikal, Puducherry, Commissioned in 2015, operated by the IMD.
6. C- Band DWR Thiruvananthapuram operated by ISRO since 2016.
7. S-Band DWR Kochi, Kerala, operated by the IMD since 2017.
8. C- Band DWR Sulur, Tamil Nadu, operated by IAF since 2018.

|   S. No. | State/Union Territory   | DWRLocations                           |
|----------|-------------------------|----------------------------------------|
|        1 | Andhra Pradesh          | Machilipatnam (S-Band)                 |
|        2 | Andhra Pradesh          | Visakhapatnam (S-Band)                 |
|        3 | Andhra Pradesh          | Sriharikota, ISRO (S-Band)             |
|        4 | Assam                   | Mohanbari (S-Band)                     |
|        5 | Bihar                   | Patna (S-Band)                         |
|        6 | Chhattisgarh            | Raipur                                 |
|        7 | Goa                     | Goa (S-Band)                           |
|        8 | Gujarat                 | Bhuj (S-Band)                          |
|        9 | Himachal Pradesh        | Jot (X-Band)                           |
|       10 | Himachal Pradesh        | Murari Devi (X-Band)                   |
|       11 | Himachal Pradesh        | Kufri (X-Band)                         |
|       12 | Kerala                  | Kochi (S-Band)                         |
|       13 | Kerala                  | VSSC, ISRO Thiruvananthapuram (C-Band) |
|       14 | Madhya Pradesh          | Bhopal (S-Band)                        |
|       15 | Maharashtra             | Mumbai (S-Band)                        |
|       16 | Maharashtra             | Nagpur (S-Band)                        |
|       17 | Maharashtra             | IITM Solapur (C-Band)                  |
|       18 | Maharashtra             | Veravali (C-Band)                      |
|       19 | Maharashtra             | Mumbai, Juhu (X-band)                  |
|       20 | Maharashtra             | Mumbai, Panvel (X-band)                |
|       21 | Maharashtra             | Mumbai, Kalyan, Dombivli (X-band)      |
|       22 | Maharashtra             | Mumbai, Vasai, Virar (X-band)          |
|       23 | Maharashtra             | Mahabaleshwar (X-band)                 |
|       24 | Meghalaya               | Cherrapunji, ISRO (S-Band)             |
|       25 | Odisha                  | Gopalpur (S-Band)                      |
|       26 | Odisha                  | Paradip (S-Band)                       |
|       27 | Punjab                  | Patiala (S-Band)                       |
|       28 | Rajasthan               | Jaipur (C-Band)                        |
|       29 | Tamil Nadu              | Chennai (S-Band)                       |
|       30 | Tamil Nadu              | Karaikal (S-Band)                      |
|       31 | Tamil Nadu              | NIOT Chennai (X-Band)                  |
|       32 | Telangana               | Hyderabad (S-Band)                     |
|       33 | Tripura                 | Agartala (S-Band)                      |
|       34 | Uttarakhand             | Lansdowne (X-Band)                     |
|       35 | Uttarakhand             | Mukteshwar (X-Band)                    |
|       36 | Uttarakhand             | Surkanda Devi (X-Band)                 |
|       37 | Uttar Pradesh           | Lucknow (S-Band)                       |
|       38 | West Bengal             | Kolkata (S-Band)                       |
|       39 | Jammu& Kashmir          | Banihal Top (X-Band)                   |
|       40 | Jammu& Kashmir          | Jammu (X-Band)                         |
|       41 | Jammu& Kashmir          | Srinagar (X-Band)                      |
|       42 | Delhi                   | Aya Nagar (X-Band)                     |
|       43 | Delhi                   | Palam (S-Band)                         |
|       44 | Delhi                   | HQ Mausam Bhawan (C-Band)              |
|       45 | Ladakh                  | Leh (X-Band) Mangaluru (C-Band)        |
|       46 | Karnataka               | Raipur (C-Band)                        |
|       47 | Chhattisgarh            |                                        |