Home   »   UPSC Calendar 2023   »   Western Disturbances

Western Disturbances

Western Disturbances News

Warm winters: Recently, the temperature reached 28.4 degrees Celsius which is the second-highest maximum temperature for December from 2015 onwards, as per IMD data.

  • The average maximum temperature from December 2 to 6 this year was 26.06 degrees Celsius, a notch higher than the long-term average of 25 degrees for these dates from 1981 to 2010.

Reason: These above normal maximum temperatures have mostly been on account of fewer western disturbances affecting Delhi this year.

  • Western disturbances bring rain and snow over the hills, and more moisture to the plains. The cloud cover results in higher minimum temperatures at night and lower day-time or maximum temperatures.


What are Western Disturbances?

  • About: They are extratropical storms that originate in the Mediterranean region which brings sudden winter rain to the north-western parts of the Indian sub-continent.
  • Travelling path: They originate in the Caspian Sea or the Mediterranean Sea and gradually travel across the middle-east from Iran, Afghanistan and Pakistan to enter the Indian sub-continent.
  • Important characteristics:
    • They are a non-monsoonal precipitation pattern which is driven by the westerlies.
    • These extratropical storms are a global phenomenon. They may happen during any season, not necessarily in monsoon.
    • This phenomenon usually carries moisture in the upper layer of the atmosphere, unlike their tropical counterparts where the moisture is carried in the lower layer of atmosphere.
    • The western disturbances are embedded in the mid-latitude subtropical westerly jet stream.
    • They travel at speeds up to 12 m/s (43 km/h; 27 mph).

UPSC Mains Result 2022


Sharing is caring!

Download your free content now!


We have received your details!

We'll share General Studies Study Material on your E-mail Id.

Download your free content now!

We have already received your details!

We'll share General Studies Study Material on your E-mail Id.

Incorrect details? Fill the form again here

General Studies PDF

Thank You, Your details have been submitted we will get back to you.

Leave a comment

Your email address will not be published.