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Cold wave in north India

Date: 18 December 2021 Tags: Geography & Environment


A cold wave has been predicted by IMD in Punjab, Haryana, Chandigarh, Gujarat, Rajasthan and Uttar Pradesh over upcoming days.



  • A severe cold wave could be seen from December 17 to 21. It is expected that dense morning fog can occur in isolated parts of Haryana and Punjab.

  • Ground frost is also on the forecast. The reason could be a western disturbance-caused cyclonic circulation lying over north Pakistan and adjoining Jammu and Kashmir.

  • Type of storms that originates in the Mediterranean region and brings winter rainfall to northwest India is termed Western disturbance.

  • During its course of time, strong northwesterly and westerly cold winds could be witnessed over north India.


Cold wave

  • Cold wave is a weather condition during which the minimum temperature is equal to or less than 10 degree Celsius at a weather station in the plains, and is 4.5 degrees to 6.4 degrees below the normal temperature for that period.  

  • A cold wave situation may also occur when minimum temperature is less than or equal to 4 degree Celsius.

  • Cold wave for hilly region occurs when minimum temperature is less than or equal to 0 degree Celsius and the minimum temperature is 4.5 degrees to 6.4 degrees below the normal.


Timing of cold wave

Cold waves occur from mid-December to the end of February. It is dependent on weather systems and wind patterns from the middle latitudes.


Entry into India

  • The cold air masses brought about by upper-level winds are the main reason for occurrence of cold wave in India.

  • Cold waves can also occur due to buildup of an extended area of relatively high pressure over northwest Asia.