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Traditionally during South West monsoon, clouds start forming from the west, bringing rain. However, for the past few days, clouds have been forming from the east, resulting in rainfall. Without any prior warning, local clouds have formed, leading to heavy rainfall, especially in the afternoons, often accompanied by thunderstorms.
For instance, over the past few days, there has been heavy rain during the evenings and nights in areas like Panja, Kollamogaru, and Subramanya. On Saturday, there was thunderous rain in Udupi.
Why is this happening?
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The local clouds formed due to this shift, coupled with those coming from the Bay of Bengal, are causing heavy rainfall in various places. This has increased moisture levels in regions like Kerala, leading to lower temperatures and higher pressure. The clouds from the Arabian Sea are avoiding high-pressure areas and moving towards low-pressure zones.
Floods in Sullia, but bright sunshine in Mangaluru and Udupi!
Typically, monsoon rains are uniform across the coastal regions. However, this year, while there have been flood-like situation in areas around Sullia, Mangaluru and Udupi have been experiencing sunshine. From August 14 to 17, the rainfall in Sullia was significantly higher than in Mangaluru and Udupi.
Impact on Winter Rainfall
It is too early to predict whether this will impact the winter rainfall. Weather patterns are no longer predictable, and they change frequently, according to meteorologists.
“Clouds usually move based on wind direction. When there are weather anomalies, clouds can sometimes move in the opposite direction. Typically, during the southwest monsoon, clouds move from the southwest. However, when the monsoon weakens along the coast, clouds might move in the opposite direction, from the east instead of the west, said C.S. Patil, Director and Scientist, Indian Meteorological Department (IMD), Bengaluru Division
Localized Heavy Rain
Recently, weather changes have been observed within a range of 30 to 40 kilometers. This is known as a “localized effect.” When the moisture content is high in one area, clouds form, resulting in heavier rain. Additionally, there have been fluctuations in temperature within different parts of the same city, according to meteorological department officials.