Deep depression over Odisha-West Bengal coasts, IMD warns of 'extreme' rain today

📌 Summary:

• A deep depression formed off the north Odisha–West Bengal coast; IMD warned of 'extremely' heavy rainfall (over 200 mm in 24 hrs) over many parts of Odisha on Monday
• System to cross the West Bengal–north Odisha coasts between Balasore and Canning by Monday afternoon, then move north-northwestwards
• Wet conditions to continue till July 30 over Gangetic West Bengal, Jharkhand, Bihar, Chhattisgarh, and parts of Madhya Pradesh and Uttar Pradesh
• Odisha's wettest locality was Jagatsinghpur with 330 mm in 24 hrs
• Monsoon revived with the trough along its normal position; season rainfall so far is 337.7 mm, a 15% deficit from normal

🎯 UPSC Relevance: GS1 (monsoon and cyclonic systems) and GS3 Disaster Management — flood-risk preparedness and early warning

📝 Prelims Facts:

• A 'deep depression' is a low-pressure stage with sustained winds of 52–61 kmph, one stage below a cyclonic storm
• IMD classifies 'extremely heavy rainfall' as more than 204.5 mm in 24 hours
• The monsoon trough governs rainfall distribution across the Indo-Gangetic plains

🔑 Key Term: Deep Depression — an intensified low-pressure system over the sea with sustained winds of 52–61 kmph.