At what wind speed does a gale warning become effective?

A gale warning is issued when sustained winds reach 39 miles per hour (mph) or greater. This classification is part of the marine weather advisory system used to inform mariners and the public about potentially hazardous conditions at sea and along the coast. Gales can significantly affect ship handling and safety, making it crucial for those at sea to be aware of these conditions. Winds at this speed can create large waves and rough seas, increasing the risk of capsizing or losing control of smaller vessels. Understanding these thresholds helps maritime personnel take appropriate safety measures and avoid hazards associated with severe weather conditions.