Snowfall Deficit in the Western Himalayas

Regions affected: Uttarakhand, Himachal Pradesh, Jammu & Kashmir (2025‑26 winter).\
Snowfall deficit: Significant reduction in snowfall; many disturbances were weak and moisture‑deficient.\
Primary drivers:\
Weak Western Disturbances (WDs) with limited moisture.
Altered trajectory of WDs (northward shift, reduced interaction with Bay of Bengal/Arabian Sea winds).
Weakening/subtropical westerly jet‑stream.
Rising winter temperatures raising the snowline.
Implications: Threats to water security, rabi crop yields, increased forest‑fire risk, glacier retreat, biodiversity stress, socio‑economic impacts on tourism and horticulture.

Western Disturbances (WDs): Extra‑tropical low‑pressure systems originating over the Mediterranean, Black and Caspian seas. They travel eastward within the subtropical westerly jet‑stream, picking up moisture over West Asia before reaching the Indian subcontinent, where they cause winter rain in the plains and snowfall at higher elevations.
Jet‑Stream Role: The subtropical westerly jet‑stream steers WDs toward India. Recent weakening and positional shifts have diverted many systems away from the western Himalayas.
Climate Change Influence: Global warming has increased winter temperatures, raising the altitude of the snowline and converting potential snowfall into rain, especially at mid‑elevations.

Water Security: Himalayan snow acts as a natural reservoir; reduced snowfall diminishes glacier mass balance and downstream river flows (Ganga, Yamuna, Indus) during the summer.
Agriculture: Rabi crops (wheat, mustard) rely on early winter snow for gradual moisture release. Snow deficit leads to inadequate soil moisture and lower yields.
Disaster Management: Dry forest floors increase vulnerability to forest fires (e.g., Valley of Flowers, Nanda Devi). Early‑warning systems and community fire brigades become crucial.
Livelihoods & Tourism: Snow‑dependent tourism and horticulture (apple orchards) face economic uncertainty.
Policy Interventions:\
Strengthen high‑altitude weather stations and satellite snow monitoring (IMD, ISRO).
Expand artificial glacier/ice‑stupa projects.
Implement spring‑rejuvenation models (e.g., "Dhara Vikas").
Integrate snow variability into State Action Plans on Climate Change and disaster‑management plans.
Promote drought‑tolerant Rabi varieties and micro‑irrigation.

Article 48A (Directive Principles) – Protection and improvement of environment and safeguarding forests and wildlife.
National Mission on Sustaining the Himalayan Ecosystem (NMSHE) – Institutional framework for monitoring glaciers, snow, and ecosystem health.
National Disaster Management Act, 2005 – Provides legal basis for forest‑fire management and disaster preparedness.