120 km/h (75 mph). Class II cyclone warnings are issued when there are 12 hours of daylight left before gusts of 120 km/h (75 mph) affect the islands. Class III cyclone warnings are issued when there are 6 hours of daylight left before gusts of 120 km/h (75 mph) affect the islands. Class IV cyclone warnings are issued when gusts of at least 120 km/h (75 mph) are occurring in the islands. Safety Bulletin Issued for the purpose of: lifting the cyclone warning class III or cyclone warning class IV, as the case may be; and informing the public of the existence of any severe weather conditions associated with the cyclone and other environment risk, depending on the nature and extent of the damage occurred during the passage of the cyclone. Termination Issued when subsequent observations indicate that the risk of cyclonic gusts of 120 kilometres per hour has abated and the cyclone is moving away Réunion Météo-France issues five levels of alerts for the French overseas department and region of Réunion. Pre-alert/Yellow alert – issued when a tropical system may impact Réunion between 24 and 72 hours. Orange alert – issued when a tropical storm or cyclone may impact Réunion in the next 24 hours. Red alert – issued when a tropical storm or cyclone is impacting part or all of Réunion. Purple alert – issued when a major tropical cyclone with winds exceeding is impacting part or all of Réunion. Safeguard phase – issued when a tropical storm or cyclone is moving away from Réunion, but hazards relating to damage caused by the system, such as fallen trees, flooded roads, mudslides, and downed power lines, still remain. Military advisories HURCON/TCCOR The United States Department of Defense uses a multi-stage system called the Hurricane Condition (HURCON) in the North Atlantic and the Northeast Pacific and the Tropical Cyclone Condition of Readiness (TCCOR) in the western Pacific to prepare bases and evacuate assets and personnel in advance of adverse weather associated with tropical cyclones. The alerts are recommended by weather facilities either on base or by central sites like the National Hurricane Center or the Joint Typhoon Warning Center and are generally related to the timing and potential for destructive sustained windspeeds of above . Recommendations are then considered by base or area commanders along with other subjective factors for setting the alert status like assets, holidays or the bases