On May 15, the topic #Gale blew down a street lamp and a pedestrian was smashed to death# appeared on the hot search list of social media, causing widespread attention and discussion.
At 8 o'clock on the 15th, Zhenping County, Henan Province issued a yellow warning for high winds, with strong winds of about 8 and gusts of 9 to 10 in many places. A street lamp collapsed in high winds, killing a cyclist.
Meteorological experts analyzed the reasons for the strong wind in Henan, on the one hand, the temperature was high in the early stage and there was strong unstable energy; On the other hand, because the high-altitude cold trough guides the strong cold air southward, the ground cold front presses southward, causing strong winds and triggering convection in Henan, and the combination of cold air winds and strong convective winds leads to strong winds.
Not so long ago, a similar accident occurred in India. On May 13, local time, Mumbai, India, was hit by strong winds and torrential rain. In the Gatkopal district, an iron billboard about 30 meters high collapsed, killing 14 people and injuring 74.
Summer is a period of high incidence of strong convective weather such as strong winds, which may blow down unstable billboards and structures, causing serious consequences.
What do you think about gale warnings?
Generally, the meteorological department uses the wind level to indicate the magnitude of the wind speed, and the wind force is divided into 18 levels from 0 to 17 according to the various phenomena caused by the wind blowing on the ground or water surface.
When the instantaneous wind speed reaches or exceeds level 8 (17.2m/s), it is called gale, and gale warning is divided into four levels.
What should I pay attention to when going out on a windy day?
Beware of falling objects
Stay away from poorly installed billboards, street trees with dry trunks, and residential buildings with debris on their windowsills.
When passing by high-rise buildings, try to walk on the inside of the protected or against the root of the wall, because the trajectory of the falling object is a parabola.
How to deal with others being hit by falling objects?
Be sure to call 120 immediately!
At the same time, judge the injured part of the injured person and observe whether the injured person is awake and can move independently. If the injured person is unable to move, do not lift the injured person to prevent paralysis caused by pulling off the injured person's spine.
If you encounter an unconscious traumatic brain injury person, do not try to wake the injured person by shaking the head, pat the injured person's shoulder and call in the injured person's ear; If there is a foreign body in the person's mouth, it needs to be cleaned to keep the airway open.
If the person is able to stand up or move his or her body, the person should be examined for fractures. If the ribs are broken, the entire chest should be protected by clothing or bandages; When the limbs are fractured, the fracture site is fixed with cardboard and fixed with a cloth band.
If a person is inserted into the body with a sharp object, do not pull out the foreign object on the spot to prevent heavy bleeding from the wound. The correct way to do this is to fix the wound with clothing and other fabrics, and then bandage and treat it.
Don't take the narrow passage
When walking and cycling, avoid the narrow passages between high-rise buildings to prevent the impact of the "narrow pipe effect". Because the air in the passage becomes faster, the wind becomes stronger, which will bring us certain dangers.
Take precautions
When going out, pay attention to wearing masks, gauze towels and other dust-proof supplies to avoid damage to the eyes and respiratory system caused by sand and dust.
Four principles of driving on windy days
Be cautious and unprepared
When driving on the highway, you should be mentally prepared for the effects of sidewinds in advance.
Slow driving prevents offset
The sight distance is short when driving on windy days, and you should pay attention to slow driving during driving to prevent the vehicle from drifting.
Avoid large vehicles
Try to avoid large vehicles, such as overloaded, over-high, over-wide vehicles or special vehicles such as trailers, tankers, and hazardous chemical transport vehicles.
Close the doors and windows tightly to activate the inner circulation mode
Remember to keep your windows closed. The air conditioner should also be switched to internal circulation mode to avoid sucking outside gases into the car.
Of course, it's best to reduce travel on windy weather. Close the windows of your home to prevent strong winds from blowing in, endangering the safety of people and items indoors; Do not open the windows of public corridors at random to avoid sand entering or glass being broken.
The national emergency broadcast reminds that you should travel cautiously in windy weather, beware of unexpected "wind" risks, and avoid disasters from the "sky".
Source: National Emergency Broadcasting