Authorities in Kerala have issued widespread weather warnings as a strengthening atmospheric circulation over the southeast Arabian Sea intensifies rainfall across multiple districts. The India Meteorological Department has placed seven districts-Thiruvananthapuram, Kollam, Pathanamthitta, Alappuzha, Kottayam, Idukki and Ernakulam-under a yellow alert, signifying expected rainfall between 64.5 mm and 115.5 mm in a 24-hour period. The advisory also highlights the possibility of thunderstorms, lightning and gusty winds reaching up to 40 km/h.

The underlying weather trigger is a low-pressure system that formed over the Strait of Malacca and adjoining Andaman Sea around 22 November, and is forecast to develop into a depression over the southeast Bay of Bengal by 24 November. This system is expected to bring moisture-laden winds into the region, maintaining wet conditions over the coming days.

Forecasters report that isolated areas in Kerala may receive 7–11 cm of rainfall in a 24-hour window between 22 and 26 November, with similar conditions flagged for the nearby Lakshadweep archipelago. Fisherfolk along coastal waters have been advised to refrain from venturing out due to rough sea conditions and winds of 35–55 km/h.

The yellow alert classifications carry significant implications for life and infrastructure. Local officials note heightened risk of waterlogging on roads, reduced visibility in hill-tracks and potential disruption of the ongoing Sabarimala pilgrimage season. Devotees travelling between Sannidanam, Pampa and Nilakkal are being urged to adjust plans and monitor weather updates.

On the marine front, maritime authorities have warned deep-sea vessels to return to the nearest harbour by Tuesday and advised fishermen along the Kerala and Lakshadweep coasts to suspend operations. Similar advisories extend to the coast of south Tamil Nadu and the Gulf of Mannar up to Wednesday as the system may increase wave activity further.

Looking at district-specific schedules, the IMD indicates that on 24 November, yellow warnings will shift to Palakkad and Malappuram alongside the core list of districts; on 25 and 26 November, the alert is expected to persist in the earlier-listed seven districts.

While yellow alerts are not the most severe classification, the extended duration of the weather system and its broad geographic footprint warrant strong preparedness. Infrastructure officials are monitoring river and dam levels, road-maintenance crews are on standby for landslide-prone zones in the Western Ghats, and local governments have begun messaging on minimizing non-essential travel.

Kerala has faced heavy rainfall challenges in past years, including major landslides in 2024 and 2018 that underlined the vulnerability of hill-terrain regions. That history adds urgency to current warnings and reinforces the need for preventive action.

As the state transitions into the winter season, this spell of sustained rainfall poses a dual risk of flooding and landslides, especially where hillside stability has been compromised by prior weather events. Hydrology experts emphasise monitoring of water-storage levels in reservoirs, the drainage readiness of urban areas and the real-time condition of key pilgrimage routes and forest paths.

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