Climate1 min read

Why is India seeing back-to-back cyclones?

By · Published by Everything Blog

In short

The Bay of Bengal experiences three to four times more cyclonic activity than the Arabian Sea between October and December. As of November 2, Murasu was tracking west-northwest at around 22 kmph off the coasts of Nellore and Chennai. The system is forecasted to drive ocean tides up to 2 meters above normal, inundating vulnerable low-lying coastal zones during landfall. Heavy rainfall and wind alerts have been activated across multiple southern and eastern states through November 4.

Key points

  • The India Meteorological Department expects Murasu to make landfall on the south Andhra P…: The India Meteorological Department expects Murasu to make landfall on the south Andhra Pradesh coast as a severe cyclonic storm.
  • Coastal winds reaching up to 110 kmph with gusts up to 120 kmph are forecast alongside ex…: Coastal winds reaching up to 110 kmph with gusts up to 120 kmph are forecast alongside extremely heavy rainfall through November 4.
  • Storm alerts and warnings for rough seas extend across Andhra Pradesh, Telangana, north T…: Storm alerts and warnings for rough seas extend across Andhra Pradesh, Telangana, north Tamil Nadu, Puducherry, south Odisha, and south Chhattisgarh.

Sources checked by our analysis pipeline: 1

After Cyclone Arnab, why has Cyclone Murasu formed so soon in the Bay of Bengal?

The main reason is the timing. October to December is the post-monsoon cyclone season over the Bay of Bengal, when conditions are favourable for the formation and strengthening of tropical storms. The sea retains considerable heat after the monsoon, providing the energy cyclones need to develop. Moist air and favourable wind conditions can further help these systems intensify. The Bay of Bengal is also more cyclone-prone than the Arabian Sea. Research published in the IMD's Mausam journal notes that cyclone activity over the Bay is around three to four times higher than over the Arabian Sea.Cyclone Murasu latest update: IMD tracks storm over Bay of Bengal

According to the IMD, Cyclone Murasu moved west-northwestwards at a speed of around 22 kmph during the six hours before 8.30 am on November 2.Read More - November 3 Weather: Tamil Nadu, Andhra Pradesh, Telangana brace for heavy rain as Cyclone Murasu triggers IMD alert across 5 states

At that time, the storm was centred over the west-central Bay…

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