Pre monsoon TS is common for this period for the stations located along the foot hills of western ghat [eastern slope. This has been known to our ancient Tamil too and during this period Vaigai used to get run off from the Premonsoon TS and Chitrai Festival is based on this pre monsoon thunder showers only. But on the other hand frequent pre monsoon TS in entire Kerala side is less common. Norwesters which claimed more than 80 lives in North Jharkhan, North Bihar,north WB was a cluster of thunder cell for form as a Line squall. But I am sure that the weather phenomenon is NOT a Tornada. Instead it may be a Low Level Jet. Locating it in weather maps may not be possible. But DWR can locate the clusters. [Kolcotta DWR]The phenomenon occurred around 2217 hrs IST and last till next day morning sun rise.
Posted by Mr. Anonymous
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