Nor Westers are dreaded evening thunderstorms seen in __________ .

The correct answer is Bengal and Assam. Key Points Norwesters or the Kalbaishakhi is a local rainfall and thunderstorm which occurs in India and Bangladesh. The direction of squalls is mainly from the northwest and they are called Norwesters (Squall – a sudden, violent gusty wind). Kalbaishakhi occurs with increasing frequency from March till monsoon establishes over North-East India. Kal Baisakhi originates in the Chhotanagpur Plateau , in and around the cities of Ranchi and Jamshedpur. In times of incursion of moist air in these elevated regions, amidst high temperatures, these extremely destructive thunderstorms occur. These rainfall storms are beneficial for the cultivation of tea in Assam and for the jute and rice and tea cultivated in West Bengal and Bangladesh The first sign of Norwester is a low bank of a dark cloud in the northwest region, the upper outline of which has the appearance of an arch. It approaches slowly at first and then rapidly with a strong gust or squall. Sometimes the wind blows with almost hurricane force. Additional Information Tea showers in Assam (they are good for tea, jute, and rice) Mango showers in Kerala and coastal areas of Karnataka as they help in the early ripening of mangoes. Cherry Blossoms/ Coffee showers in Kerala and nearby areas (good for coffee plantations).