---
title: "Coriolis Force: Earth's Rotation Deflection | Model Diplomat"
description: "The Coriolis force deflects winds and currents due to Earth's rotation, crucial for understanding weather patterns and a key topic for UPSC candidates."
url: "https://modeldiplomat.com/learn/glossary/coriolis-force"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The Coriolis force is an apparent deflective force, arising from Earth's rotation, that deflects moving objects to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
- Why is the Coriolis force zero at the Equator and maximum at the poles?
- Does the Coriolis force determine the direction water drains from a sink?
- How does the Coriolis force differ from the centrifugal force?
- What is Ferrel's Law?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

The Coriolis force is an apparent deflective force, arising from Earth's rotation, that deflects moving objects to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

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The India Meteorological Department attributed the anticlockwise rotation of Cyclone Biparjoy over the Arabian Sea in June 2023 to the Coriolis force acting on the Northern Hemisphere system.

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