Strong, gusty, hot, dry winds blowing during the day over north and northwestern India.
Explanation
Local winds are winds that blow only during a particular period of the day or year in a small area. The 'Loo' is a specific local wind phenomenon characteristic of the hot weather season (summer) in the Indian subcontinent.
Option Analysis
- Cool breeze blowing from the sea to land in the evening. is incorrect: A cool breeze blowing from the sea to the land in the evening is known as a Sea Breeze. This occurs due to the differential heating rates of land and water bodies.
- Strong, gusty, hot, dry winds blowing during the day over north and northwestern India. is correct: The Loo is defined as strong, gusty, hot, and dry winds blowing during the day over the north and northwestern parts of India. It typically persists between April and June. The temperature of these winds is extremely high, and direct exposure to them can be fatal due to the risk of heatstroke.
- Moist winds bringing heavy rainfall to the northeast India. is incorrect: Moist winds bringing heavy rainfall to northeast India are typically associated with the South-West Monsoon or pre-monsoon local storms like Nor'westers (Kalbaishakhi).
- Cyclonic winds affecting the coastal areas of Odisha. is incorrect: Cyclonic winds affecting the coastal areas of Odisha refer to Tropical Cyclones, which are low-pressure systems originating over the Bay of Bengal.
Key Takeaway
Loo is a hot, dry, and oppressive local wind that blows across the Great Plains of India and Pakistan during summer afternoons, often causing heatwaves.