Your neighborhood cell towers are secretly the best weather radars on Earth—they can track every single raindrop in real-time.
March 20, 2026
Original Paper
Mobile Radio Networks and Weather Radars Dualism: Rainfall Measurement Revolution in Densely Populated Areas
arXiv · 2603.19153
The Takeaway
Researchers successfully demonstrated that existing cellular networks can be repurposed as a 'distributed opportunistic radar' for rainfall sensing. This turns global mobile infrastructure into a massive, accidental weather-sensing grid capable of monitoring storms with street-level precision far beyond current satellites.
From the abstract
This study demonstrates, for the first time, how a network of cellular base stations (BSs) - the infrastructure of mobile radio networks - can be used as a distributed opportunistic radar for rainfall remote sensing. By adapting signal-processing techniques traditionally employed in Doppler weather radar systems, we demonstrate that BS signals can be used to retrieve typical weather radar products, including reflectivity factor, mean Doppler velocity, and spectral width. Due to the high spatial