1. Sometimes a peculiar phenomenon takes place over places located at far off places from India which creates temporary changes in the long term climatic pattern.

2. Phenomena like Jet stream, Western Disturbances, E1 -Nino, ITCZ have affected the Indian weather to a great extent.

3. Jet stream (Jet winds) blow over the southern slopes of Himalayas during winter and in summer these are stationed over peninsular India. High altitude winds help to bring rain.

4. Western disturbances often causes disturbances in the pleasant winter weather of North India.

5. Very high mountains receive snowfall and the plains receive some rain which is useful to Rabi Crop. This may cause unseasonal rain in Gujarat which may damage crops.

6. The El-Nino phenomena takes place occasionally. Whenever it takes place changes occur in the duration of monsoon and amount of rainfall in India.

7. ITCZ is becomes stable over Ganga plains in July. Due to the low pressure developed over this region, winds generated over the oceans in southern hemisphere blow towards this area. It causes rain in a few parts of North India.