Gale blue warning refers to several winds.

Gale blue warning refers to a warning signal that there may be a gale of magnitude 6 or above, which will have a certain impact on people's lives and agricultural production, that is, when the hourly wind speed is between 39 and 49 kilometers.

Gale blue warning signal belongs to the first level of gale warning signal and is the lowest level of warning. Usually, it means that there may be some adverse weather or other unexpected events, which may be affected by strong winds of magnitude 6 or above or gusts of magnitude 7 or above within 24 hours, or the area has been affected by strong winds, with an average wind of magnitude 6 to 7 or gusts of magnitude 7 to 8. But it has little impact on people's production and life, so we need to pay attention to prevention.

There are four warning icons * * * for windy weather, which are blue, yellow, orange and red respectively. From low to high, the warning level is indicated, and blue is the lowest warning signal. However, residents should still close their doors and windows and properly arrange outdoor items that are vulnerable to strong winds, and red is the highest warning signal. Once this signal is released, it means that the weather situation is grim, and it is recommended to suspend classes.

Blue warning and defense guide for gale;

The government and relevant departments shall, in accordance with their duties, do a good job in preventing strong winds, close doors and windows, reinforce structures that are easily blown by the wind, such as hoardings, scaffolding and billboards, properly arrange outdoor items that are easily affected by strong winds, cover building materials, and take active measures such as returning to Hong Kong to avoid the wind or bypassing ships in relevant waters.

Pedestrians should pay attention to riding bicycles as little as possible, do not stay under billboards and temporary structures when it is windy, and relevant departments and units should pay attention to forest and grassland fire prevention. Local people's governments at all levels should strengthen the infrastructure construction of early warning signals, establish smooth and effective channels for the release and dissemination of early warning information, expand the coverage of early warning information, and organize relevant departments to establish emergency mechanisms and systems for meteorological disasters.

Management units of schools, airports, ports, stations, highways, tourist attractions and other crowded public places shall set up or use electronic display devices and other facilities to spread early warning signals. The state protects the special communication facilities for early warning signals according to law, and no organization or individual may occupy, damage or move them without authorization.