Yemen's Ansarallah launched a series of ballistic missile and drone strikes against Saudi Arabia on Sept. 18, prompting air raid sirens to sound throughout the kingdom's south and west. The Saudi Civil Defense activated early warning alerts in Jeddah, Taif, Yanbu, Al-Ula, Khamis Mushait, Jazan, Abha City, and the Farasan islands following reports of explosions. These strikes specifically focused on the King Khalid and King Fahd airbases and other military installations.

Air raid sirens sounded repeatedly over a 50 minute period as the group coordinated strikes across the region. The activation of the warning systems began at 8:22 p.m. UTC in Yanbu, Taif, and Jeddah, signaling a concentrated attack wave targeting sovereign territory and strategic air assets.