The upcoming El Niño event poses significant risks to global populations, particularly in regions prone to extreme weather events. The anticipated rise in ocean temperatures will likely lead to more severe natural disasters, including flooding, wildfires, and hurricanes. Additionally, the event threatens critical infrastructure such as power grids and food supply chains, potentially leading to widespread shortages and economic instability. Vulnerable communities, especially those in low-lying areas or regions already experiencing climate stress, are at heightened risk. The letter emphasizes the potential for catastrophic outcomes if immediate action is not taken to mitigate these risks.