The Weather Alert Response and Notification Act, or WARN Act , mandates that the Comptroller General of the United States conduct a comprehensive study on the effectiveness of emergency alerting systems. This study will examine local, State, territory, and Federal systems to determine how well they disseminate timely and relevant information during weather-related emergencies to enhance public safety. The Comptroller General is specifically tasked with evaluating the efficacy of various alert mediums, including platforms like social media, for communicating critical information such as travel bans and mass power outages during extreme weather events. The study will also assess existing guidance and training for developing clear, relevant, and actionable alert content. Furthermore, it will determine potential improvements to public alerting, including outdoor siren systems, based on input from emergency managers, local officials, and community groups. A detailed report on these findings must be submitted to relevant congressional committees within 18 months of the Act's enactment.