Under the influence of western disturbance, Karachi is likely to experience moderate to heavy spell sessions tonight. The rain is likely to bring down the daytime temperature and trigger a very cold winter feel in Karachi.
According to the satellite data, after midnight, isolated thunderstorms are likely to form over different areas of metropolis accompanied by lightning and hailstorm at isolated places over the northern parts of a city. This spell session is likely to continue until tomorrow afternoon.
Western Disturbance is an extratropical storm, which triggers rain in Pakistan and India during the winter season. It is very useful for wheat and winter crops. It is driven by westerlies. Westerlies are prevailing winds originating from the west toward the east in the middle latitudes between 30 and 60 degrees latitude.
