Cyclones

Story hook

It is 12 October 2013, Saturday, evening. Cyclone Phailin — the strongest cyclone to hit India since the 1999 Super Cyclone — slams into Gopalpur, Odisha with sustained winds of 210 km/hr. Storm surge of 3.5 metres floods the coast.

But this time, there is no repeat of 1999. By the time Phailin makes landfall, 9.8 lakh people have been evacuated in 72 hours — the largest peacetime evacuation in modern Indian history. 464 cyclone shelters along the Odisha coast house the displaced. Naveen Patnaik's Odisha State Disaster Management Authority (OSDMA) coordinates 24-hour SMS warnings, helicopter drops, NDRF battalion pre-positioning, IMD Doppler radar feeds.

Casualties: 45 dead (vs 1999's 9,887). The UN calls Phailin "one of the world's most successful pre-evacuation operations". Odisha becomes the global benchmark in cyclone preparedness.

Six years later, Cyclone Fani (May 2019) repeats the playbook — 12 lakh evacuated in 72 hours, 64 dead. Then Biparjoy (June 2023) in the Arabian Sea evacuates 1 lakh with near-zero casualties. India is now exporting cyclone- preparedness know-how to Bangladesh, Sri Lanka, Mauritius.

This unit tells the story of the IMD classification system, naming conventions, the tracking architecture, and the transformation from Phailin 2013 to Biparjoy 2023 — a decade of operational learning.

Why this matters for UPSC

Cyclone questions are annually tested in Prelims (IMD categories, naming country, recent cyclones). Mains demands you narrate the 1999 → Fani → Biparjoy trajectory and discuss the Arabian Sea cyclone intensification due to climate change. Interview boards probe why Odisha succeeds where Mumbai fails in urban cyclone response.