1 min read · 123 words
Four cyclones out of five are Bay-born. The tracks, seasons and warning chain are standard exam material.
Why the Bay dominates
- Warm pool, low vertical wind shear; historical ratio near 4:1.
- Arabian Sea cyclogenesis rising with sea-surface warming.
Seasons and tracks
- Two peaks: pre-monsoon March-May and post-monsoon October-November.
- October-November systems recurve west-north-west to hit Tamil Nadu and Andhra; monsoon systems drift up the Gangetic plain.
Warning chain
- IMD is the Regional Specialised Meteorological Centre, New Delhi; names come from a 13-country panel list.
- Cyclone shelters of the coastal programme plus NDRF staging cut the death toll.
Revise in 30 seconds
- Bay:Arabian ratio close to 4:1.
- Two peaks: May and November.
- RSMC New Delhi handles naming.
- Deaths fall when shelters and warnings work; damage does not.
Quick revision
- Warm pool, low vertical wind shear; historical ratio near 4:1.
- Arabian Sea cyclogenesis rising with sea-surface warming.
- Two peaks: pre-monsoon March-May and post-monsoon October-November.
- October-November systems recurve west-north-west to hit Tamil Nadu and Andhra; monsoon systems drift up the Gangetic plain.
- IMD is the Regional Specialised Meteorological Centre, New Delhi; names come from a 13-country panel list.
- Cyclone shelters of the coastal programme plus NDRF staging cut the death toll.
