<p>I am primarily interested to know:</p>

<ol>
<li>What is Norwester (localy called Kalboishaku as because in occurs during the Bengali Month Boishak which falls between Mid April to Mid May).</li>
<li>What causes  Norwester.</li>
<li>Why does it occur during the month of April and May.</li>
<li>Characteristics of Norwesters (What I have personally seen is, it happens during late afternoon with a sudden onset of Cumulonimbus cloud spreading across within few minutes followed by heavy thunderstorm and rain which persists for an hour followed by clear sky)</li>
<li>What are the areas affected by Norwesters. (I am only aware of the east Gangetic plane)</li>
<li>Why it is called Norwesters (My guess is its because the wind blows from North West)</li>
</ol>

<p><strong>Note</strong></p>

<p>There are very little information around currently on Norwesters and even the <a href="http://en.wikipedia.org/wiki/Norwesters">wiki page</a> is a stub. Most of my contextual answers are based on my experience with Norwesters but I couldn't find any studies or articles in this regard. I am possibly looking for answers drawn from credible source (possible links to journals/ books / papers), as this would be a nice opportunity to build a credible wiki on this subject.</p>

<weather>
What is the primary cause of the "Norwester" winds that affect parts of India & Bangladesh?
Abhijit
# What is the primary cause of the "Norwester" winds that affect parts of India & Bangladesh?

(Asked by: username_0 on 2014-06-02)

I am primarily interested to know:

1. What is Norwester (localy called Kalboishaku as because in occurs during the Bengali Month Boishak which falls between Mid April to Mid May).
2. What causes Norwester.
3. Why does it occur during the month of April and May.
4. Characteristics of Norwesters (What I have personally seen is, it happens during late afternoon with a sudden onset of Cumulonimbus cloud spreading across within few minutes followed by heavy thunderstorm and rain which persists for an hour followed by clear sky)
5. What are the areas affected by Norwesters. (I am only aware of the east Gangetic plane)
6. Why it is called Norwesters (My guess is its because the wind blows from North West)

**Note**

There are very little information around currently on Norwesters and even the [wiki page](http://en.wikipedia.org/wiki/Norwesters) is a stub. Most of my contextual answers are based on my experience with Norwesters but I couldn't find any studies or articles in this regard. I am possibly looking for answers drawn from credible source (possible links to journals/ books / papers), as this would be a nice opportunity to build a credible wiki on this subject.

**Tags:** weather


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## 0 answers

