Early warning systems mitigate disaster impact and economic loss

Early warning systems serve as a critical last line of defense against natural disasters, though their effectiveness is strictly limited by the time available for response and prior territorial preparation. While alerts cannot improve infrastructure or drainage in real-time, they allow for life-saving decisions such as suspending classes, closing roads, and issuing evacuation orders.

Effective disaster management relies on three pillars: prevention, preparation, and alert. Research highlights the impact of these systems; for instance, in Bangladesh, a cyclone with similar intensity to the 1970 Bhola cyclone—which caused 500,000 deaths—resulted in only 26 fatalities in 2020 due to improved proactive management.

The United Nations ‘Early Warnings for All’ initiative promotes investment in climate information systems to mitigate human and economic losses. Estimates suggest that a 24-hour advance warning for imminent threats can reduce damages by up to 30%. In developing nations, an investment of $800 million could prevent losses ranging from $3 billion to $16 billion.