Introduction
To significantly enhance extreme weather forecasting and disaster mitigation in the ecologically fragile Western Ghats, the India Meteorological Department (IMD) announced on 13 August 2026 that it will commission an advanced X-Band Doppler Weather Radar (DWR) at Pulpally in Wayanad district, Kerala, by December 2026.
Need and Background
Wayanad district witnessed devastating landslide disasters in July 2024 triggered by hyper-local, intense cloudburst events. Traditional meteorological monitoring in high-altitude hilly terrains often suffers from radar shadow zones and terrain blockage. The installation of a dedicated high-frequency X-Band radar at Pulpally will provide granular, real-time tracking of rapidly developing localized rainstorms and cloudbursts.
Technical Capabilities of X-Band Doppler Radar
Unlike longer-range S-Band or C-Band radars used for broad regional tracking, X-Band Doppler Radars offer specialized advantages for mountainous topography:
- High Spatial Resolution: Operates at short wavelengths (8–12 GHz frequency), detecting small water droplets and micro-precipitation structures with high precision.
- Effective Range: Covers a radius of approximately 100 kilometres, providing hyper-local coverage across Wayanad, Kozhikode, Kannur, Malappuram, and adjoining Nilgiris (Tamil Nadu) and Kodagu (Karnataka).
- Early Warning Lead Time: Enables real-time tracking of convective storm cells, rainfall intensity, wind velocities, and cyclonic vortexes, providing 3–6 hours of crucial early warning lead time.
- Nowcasting Support: Feeds high-resolution data into landslide early warning systems and state disaster management authority (SDMA) dashboards.
Key Facts
- Project: X-Band Doppler Weather Radar (DWR)
- Location: Pulpally, Wayanad District, Kerala
- Commissioning Target: December 2026
- Implementing Agency: India Meteorological Department (IMD), Ministry of Earth Sciences
- Frequency Band: X-Band (8–12 GHz, ~3 cm wavelength)
- Coverage Scope: Northern Kerala, Western Nilgiris (Tamil Nadu), Kodagu (Karnataka)
Exam Perspective
For TNPSC and UPSC examinations, this topic covers Geography, Science & Technology (Radar and Remote Sensing), and Disaster Management (Landslide Mitigation and Early Warning Systems). Candidates should understand the differences between S-Band (coastal cyclone tracking), C-Band (plains/medium range), and X-Band (mountainous/hyper-local tracking) radars.
Conclusion
The deployment of the Pulpally X-Band Doppler Weather Radar represents a vital technological intervention to safeguard vulnerable mountain communities, reinforcing climate resilience and disaster risk reduction across the Western Ghats region.