---
title: "Kal Baisakhi (Nor'westers): Pre-Monsoon Storms"
description: "Kal Baisakhi are violent pre-monsoon thunderstorms that occur in eastern India, especially West Bengal, during March to May, causing severe weather."
url: "https://modeldiplomat.com/learn/glossary/kalbaisakhi"
---

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Model Diplomat Research Team · Last reviewed July 7, 2026

TL;DR

- Kal Baisakhi are violent pre-monsoon thunderstorms that strike eastern India, chiefly West Bengal, during March, April, and May.
- Why are Kal Baisakhi storms called Nor'westers?
- How do Kal Baisakhi differ from the southwest monsoon?
- Are Kal Baisakhi harmful or beneficial?
- How are Kal Baisakhi storms distinct from Mango showers?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated July 7, 2026

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In April 2021, severe Kal Baisakhi squalls swept Gangetic West Bengal and Jharkhand, causing lightning deaths and uprooting trees, after which the West Bengal government issued disaster-management advisories.

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