This is the first time that the World Meteorological Organisation (WMO) Archive of Weather and Climate Extremeshas broadened its scope from temperature and weather records to address impacts of specific events.
"Extreme weather causes serious destructionand major loss of life. That is one of the reasons behind the WMO's efforts to improve early warnings of multiple hazards and impact-based forecasting, and to learn lessons gleaned from historical disasters to prevent future ones," WMO Secretary- General Petteri Taalas said.
"The human aspect inherent in extreme events should never be lost," he added.
While the in-depth investigation by a WMO expert committee documented mortality records for five specific weather-related events, it did not address heat- or cold- waves, drought and floods.
The experts found that the highest mortality rate associated with extreme weather was during a 1970 tropical cyclone through what was at the time East Pakistan, which killed an estimated 300,000 people.
Other record-breaking weather events included a 1989 tornado in Bangladesh that killed an estimated 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.
The findings were announced ahead of twomajor conferenceson improving multi-hazard early warning systems and strengthening disaster risk reduction, taking place in Cancun, Mexico this month and organised by WMO and the UN Office on Disaster Risk Reduction.
Overall mortality can also decrease as a result of continuous improvement in related forecasting and warning infrastructure.
"These events highlight the deadly tragedies associated with different types of weather. Detailed knowledge of these historical extremes confirms our continuing responsibilities to not only forecast and monitor weather and climate but to utilise that information to save lives around the world so disasters of these types are lessened or even eliminated in the future," said Randall Cerveny, WMO Rapporteur on Climate and Weather Extremes.
The experts stressed that overall mortality can decrease as a result of continuous improvement in related forecasting and warning infrastructure. However even with improvements, mortality from weather-related events will continue.
"In order to put 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.