Indian Weather Desk

Role of Ocean Heat Content in the Rapid Intensification of Cyclone Amphan (2020) over the Bay of Bengal Author:Kritajno Bhattacharya Abstract   A major forecasting challenge in the North Indian Ocean is the rapid intensification (RI) of tropical cyclones, especially in the Bay of Bengal, where coastal communities are extremely vulnerable. The main indicator of cyclone intensification has historically been sea surface temperature (SST). Since it captures the total thermal energy available for cyclone growth outside of the surface layer, subsurface ocean heat content (OHC) has lately been acknowledged as a more accurate metric. This study examines how OHC contributed to Super Cyclonic Storm Amphan's (2020) quick intensification over the Bay of Bengal.We'll examine the atmospheric and oceanic factors that contributed to Amphan's abrupt intensification using Tropical Cyclone Heat Potential datasets, in-situ Argo float observations, and best-track records from the India Meteorol...

                                          INDIAN WEATHER DESK              WEEKLY DISTRICT WEATHER BULLETIN – WEST BENGAL ___________________________________________________________________________ Date of Issue: 10.09.2025 (0500 IST)  Valid Period: 11.09.2025 to 19.09.2025 SYNOPTIC OVERVIEW A low-pressure area is expected to form over the northwest Bay of Bengal around 13th September, which may enhance rainfall activity across West Bengal. Active monsoon conditions are likely to continue, bringing light to moderate rainfall to most districts. Isolated heavy rainfall is possible over southern and sub-Himalayan districts, especially around 13th–15th September. Expect thunderstorms, lightning, and gusty winds (30–40 km/h) at isolated locations during heavy showers. SOUTH BENGAL ( Kolkata, Howrah, Hooghly, North & South 24-Parganas, East &...

Northern India’s 2025 Floods: When Monsoon Surprises Turn Deadly Written by: Kritajno Bhattacharya  Northern India has faced unusually heavy rainfall in 2025, with several states experiencing flooding not seen in over a decade. From Delhi to Uttarakhand, overflowing rivers and landslides are causing major disruptions in daily life. Understanding these extreme rainfall events is crucial for preparing for a future of climate uncertainty. Despite 2025 not being as hot as 2024, the monsoon had its own surprises in store. Some of the highest rainfall in 14 years was seen in northern India with regions in Uttarakhand, Himachal Pradesh, Punjab, and Delhi seeing significantly above average rain. The Yamuna River in Delhi crossed its danger level, and evacuations were undertaken with the city’s flood control mechanisms also under pressure. These flood events are not just numbers, they directly impacting millions. Watershed streets, halted transport, ruined crops, and landslides ...