Cascading Extreme Weather Events Unleash Billions in Damages Globally

Key Points

  • South Carolina experienced over 100 fires last weekend due to a combination of dry conditions, wind, and a spark, highlighting the dangers of compound weather events.
  • Compound weather events, where multiple weather phenomena occur simultaneously, are becoming more common and severe due to climate change, with significant economic and human costs.
  • Examples of compound events include the Los Angeles wildfires following a drought, and the Malaysian floods exacerbated by extreme tides and saturated soil.

Summary

South Carolina recently faced a severe outbreak of wildfires, with over 100 fires ignited in a single weekend due to a combination of dry conditions, wind, and a spark. This event underscores the growing threat of compound weather events, where multiple weather phenomena occur concurrently, leading to more devastating outcomes than if each event happened in isolation. These compound events are becoming more frequent and intense due to climate change, as evidenced by the Los Angeles wildfires following a drought, and the Malaysian floods worsened by extreme tides and saturated soil. The economic toll of such events is staggering; for instance, California's fires are projected to cost $164 billion, while the preceding drought's financial impact remains unassessed. Experts warn that as the planet continues to warm, these compound events will likely increase in frequency and severity, necessitating better modeling and preparedness strategies to mitigate their impacts.

Mary Hui and Joe Wertz
March 9, 2025
Stocks
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