Cyclone Megh — LLMpedia

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Cyclone Megh Cyclone Megh was a powerful tropical cyclone in the Arabian Sea during late 2015 that struck the island of Socotra and affected portions of Yemen, Somalia, and Oman. The system developed during an active 2015 North Indian Ocean cyclone season influenced by a strong Indian Ocean Dipole and concurrent Cyclone Chapala, producing unusual simultaneous cyclogenesis that drew attention from the India Meteorological Department, Joint Typhoon Warning Center, and regional disaster agencies. Megh's rapid intensification and landfall on Socotra prompted coordinated alerts from regional authorities including the United Nations Office for the Coordination of Humanitarian Affairs and prompted international coverage from outlets such as the BBC, Al Jazeera, and Reuters.

Meteorological history

The disturbance that became Megh originated from a low-pressure area tracked east of the Horn of Africa and west of the Indian subcontinent, monitored by the India Meteorological Department and the Joint Typhoon Warning Center on 29 November 2015. Environmental analyses by NASA and the European Centre for Medium-Range Weather Forecasts showed warm Arabian Sea sea-surface temperatures and low vertical wind shear conducive to intensification, while synoptic patterns associated with the Madden–Julian Oscillation and a positive Indian Ocean Dipole supported convective organization. Megh underwent rapid deepening as measured by drops in central pressure recorded by satellite-based equivalent potential temperature retrievals used by the National Oceanic and Atmospheric Administration and infrared imagery analyzed by the Japan Meteorological Agency, reaching peak intensity with estimated sustained winds comparable to a very severe cyclonic storm on 3 December 2015. Steering currents linked to a subtropical ridge over the Arabian Peninsula and a mid-level trough near the Gulf of Aden directed Megh toward Socotra, where it made landfall before weakening under increased land interaction and entrainment of drier air from the Red Sea region.

In advance of landfall, the India Meteorological Department issued advisories that were echoed by the Joint Typhoon Warning Center and relayed to national authorities in Yemen and Somalia, while the United Nations Office for the Coordination of Humanitarian Affairs coordinated with the International Federation of Red Cross and Red Crescent Societies, UNICEF, and World Food Programme to pre-position relief stocks. Local authorities on Socotra and in mainland Yemen activated evacuation procedures and dispersed warnings through municipal offices tied to provincial administrations and the Ministry of Interior (Yemen), with additional alerts propagated via humanitarian partners such as Médecins Sans Frontières and Save the Children. Vessels in the Gulf of Aden and fishing fleets were advised by the International Maritime Organization and port authorities in Aden and Mukalla to avoid affected waters, while regional airfields including Seiyun Airport and Socotra Airport adjusted schedules based on advisories from the Civil Aviation and Meteorology Authority (Yemen).

Megh's landfall on Socotra produced severe damage to infrastructure, housing, and agricultural resources, including destruction of stone and traditional dwellings documented by teams from the United Nations Development Programme, World Food Programme, and Norwegian Refugee Council. Communications and power outages affected settlements such as Hadibu and the island's water systems, prompting assessments by UNICEF and the World Health Organization of risks to public health and sanitation. Mainland Yemen—already impacted by the Yemeni Civil War (2014–present)—saw exacerbated humanitarian needs in coastal districts near Al Mukalla and Aden, with reports of flood damage, displaced households, and losses to livestock noted by the United Nations High Commissioner for Refugees and International Organization for Migration. In Somalia and Oman, heavy rains and coastal swells produced localized flooding and infrastructural strain reported by the Somalia National Disaster Management Agency and the Oman Meteorology Department, with maritime incidents monitored by the United Kingdom Hydrographic Office and regional coast guards.

Humanitarian response involved rapid needs assessments by the United Nations Office for the Coordination of Humanitarian Affairs, logistical support from the World Food Programme, and health interventions by the World Health Organization and Médecins Sans Frontières. Emergency shelter, water, sanitation, and hygiene support were delivered through coordinating clusters including the Shelter Cluster and WASH Cluster led by agencies such as UNICEF and International Committee of the Red Cross, while bilateral assistance and in-kind relief arrived from neighboring states and organizations like the Arabian Gulf states and European Civil Protection and Humanitarian Aid Operations. Reconstruction efforts on Socotra emphasized restoration of critical infrastructure overseen by the United Nations Development Programme and local authorities, with satellite imagery comparisons by European Space Agency and damage mapping by ReliefWeb partners guiding recovery priorities. Continued instability from the Yemeni Civil War (2014–present) complicated aid delivery, requiring coordination among the International Committee of the Red Cross, UNICEF, and non-governmental organizations operating in contested areas.

Megh formed during the 2015 North Indian Ocean cyclone season alongside Cyclone Chapala, creating an unusual pair of intense systems in the Arabian Sea—an occurrence analyzed in studies by NOAA, NASA, and researchers affiliated with the University of Reading and the Indian Institute of Tropical Meteorology. Post-storm analyses examined Megh's rapid intensification using reanalysis datasets from the European Centre for Medium-Range Weather Forecasts and high-resolution satellite products from NOAA and the Japan Meteorological Agency, highlighting interactions with the Indian Ocean Dipole and the Madden–Julian Oscillation as key contributors. Megh's pressure and wind estimates informed updates to tropical cyclone climatology maintained by the India Meteorological Department and comparative studies published in journals associated with the American Meteorological Society and Geophysical Research Letters, while operational lessons influenced contingency planning by regional agencies including the Oman Meteorology Department and the Somalia National Disaster Management Agency.

Category:2015 North Indian Ocean cyclone season Category:Tropical cyclones in Yemen Category:2015 in Yemen