In India an 1888 hailstorm has been identified by the weather of UN agency among all time deadliest weather events.
Near Moradabad in Uttar Pradesh the severe hailstorm killed about 246 people.
The World Meteorological Organisation (WMO) Archive of Weather and Climate Extremes has broadened its scope from temperature and weather records to address impacts of specific events for the very first time.
WMO Secretary- General Petteri Taalas said, "Extreme weather causes serious destruction and major loss of life. This is the reason behind the World Meteorological Organisation's efforts to improve the early warnings of the impact-based multiple hazards and forecasting, and to learn lessons gleaned from prevent future ones to the historical disasters."
He further added by saying that, "The human aspect inherent in extreme events should never be lost."
By a WMO expert committee the in-depth investigation, in which documented mortality records for five specific weather-related events, it did not address heat- or cold-waves, drought and floods.
The highest mortality rate found by the experts, is associated with the extreme weather was during a 1970 tropical cyclone through what was at the time East Pakistan, which killed an estimated 300,000 people.
Other breaking-record of weather events which included the event of Tornado 1989 in Bangladesh that killed about 1,300 people, destroying the Manikganj district; a 1994 lightning-caused oil tank fire in Dronka, Egypt, which took 469 lives, while 21 people were killed by a single lightning bolt to a hut in the Manica Tribal Trust Lands in what was then Rhodesia.
By the two major conference findings were announced for improving the Multi-hazard early warning system and strengthening disaster risk reduction, in Cancun it took place, Mexico this month and organised by WMO and the UN Office on Disaster Risk Reduction.
Mortality can even decrease in a result of continuous improvement in related forecasting and warning infrastructure.
Randall Cerveny, WMO Rapporteur on Climate and Weather Extremes said that, "These events highlight the deadliest tragedies associated with the different types of weather. The detail knowledge of the historical extremes confirms that our’s continuing responsibilities to not only monitor Climate and weather and Forecast but to even utilise that information to save lives around the world so disasters of these types are lessened or even eliminated in the future."
The overall mortality can decrease as the experts stressed and as a result of continuous improvement in related forecasting and the warning infrastructure. However even with improvements, mortality from weather-related events will continue.
"In order to put the potential future weather-related catastrophes into accurate historical context, it is useful to have knowledge of baseline changes in weather-related mortality as monitored over the last one hundred and fifty years of official international weather records," said the WMO committee.