What's Happening?
A dense fog has been observed over Northern India, captured by the MODIS instrument aboard NASA's Terra satellite on December 18, 2025. This fog, appearing as a large patch of low white clouds, is expected to persist for several days, leading to near-zero
visibility conditions. Such conditions are likely to cause significant transportation disruptions across the region, affecting road, railway, and air travel. This type of fog, known as radiation fog, typically forms during the winter months when cool ground temperatures, low wind speeds, and high moisture levels are present.
Why It's Important?
The persistence of dense fog in Northern India poses substantial challenges to transportation infrastructure, potentially leading to delays and increased risks of accidents. The impact on transportation can have broader economic implications, affecting the movement of goods and people. Additionally, the recurring nature of such weather phenomena highlights the need for improved forecasting and adaptive measures to mitigate disruptions. The situation underscores the importance of satellite technology in monitoring and predicting weather patterns, which can aid in planning and response efforts.









