Regional description of the conditions of air pressure found in winter season is: During winter season, a high air pressure of 1018 milibar is found in the states of North i India i.e. Rajasthan, Punjab, Haryana and Uttarakhand. The same condition is found in Assam, Meghalaya, Manipur and also in the plateau region of Chhota Nagpur. The atmospheric pressure is 1016 milibar in the Central India which can be found in South Gujarat, Maharashtra, Telangana and Andhra Pradesh. The atmospheric pressure is 1014 milibar along the western coastal areas of South India which can be found in Karnataka, Kerala, Southern coast of Tamil Nadu and Andaman – Nicobar.