Ministry of Earth Sciences secretary M Rajeevan said, "On that day (May 8), they went overboard. They (IMD) predicted a kind of severe system but that did not happen."
"There was a hype created by the people because the storm had caused a lot of damage on May 2 and 3. When the weather agency issued the fresh forecast for the remaining days, they thought the same kind of severity will be there. But it was not there," Mr Rajeevan added.
The top official said predicting thunderstorm was more difficult compared to tropical cyclones. At present, the weather agency could predict thunderstorm 2-3 days before they strike. Attempts were being made to predict thunderstorm six hours before they hit, he said.
"We predicted that there was a probability of thunderstorm on May 2-3, two or three days before it hit the region. But the question was exactly at what time would it start, intensify and dissipate. We cannot tell that two days before (it happens)," Mr Rajeevan said.
Mr Rajeevan defended the weather agency, saying it didn't goof-up in issuing an alert for the May 2-3 high-intensity thunderstorm, which killed over 120 people in Rajasthan and Uttar Pradesh.
Following the deadly thunderstorm of May 2-3, the India Meteorological Department had issued an alert for May 8, forecasting that parts of north India, including Delhi, could be hit by thunderstorm and squall with winds gusting up to 50-70 kilometres an hour.
The warning triggered panic across the National Capital Region. The Delhi government ordered the closure of schools anticipating bad weather. However, there was no extreme weather activity as predicted by the weather agency.
With inputs from PTI
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