Kolkata: Latest satellite observations indicate that Thundersquall with wind speed exceeding 80 kmph accompanied with lightning and light to moderate rain likely to affect some parts of North 24 Pargana, South 24 Pargana including Kolkata during next 2-3 hours.
Earlier, Two storms lashed parts of West Bengal, including Kolkata killing at least 15 people as winds topping 80 kilometres per hour toppled trees, disrupted train and air traffic and uprooted electric poles in the region.
Seven were killed in Kolkata and six in Howrah after the two norwesters, seasonal storm common in the region, struck the eastern state on Tuesday evening. Two people were struck by lightning in Hooghly and Bankura districts in south West Bengal.
Most such thundershowers are triggered by clouds forming over the Chhotanagpur Plateau and drifting eastwards. An abundance of moisture caused by the combination of four weather systems, especially the cyclonic circulation over Bengal, led to rain-bearing clouds forming over south Bengal on Monday.
In view of the warnings issued by the weather office, the district administrations have alerted all the blocks, asking them to take precautionary measures so that such incidents can be averted. The villagers in various blocks have been asked not to work out on the field during a thundershower.