Weather in Tongren, Guizhou

On May 3rd, Guizhou released the weather forecast. Cloudy days in the northwest and southwest of the province are accompanied by thunderstorms, moderate to heavy rain in some areas, accompanied by strong convective weather, and the rest turn cloudy with short-term showers.

At 2 pm on the 3rd, there was a sudden rainstorm and strong convective weather in Tongren, Guizhou. The cable bridge in Tongren "swayed" wildly in the storm and finally twisted into a twist. The guardrails on both sides are damaged and closed. It is estimated that the wind should have reached 4-6 winds at this time. After all, the bridge can still be opened to traffic at ordinary times.

Tongren, Guizhou is a good place with beautiful scenery. Spring is a good place to enjoy flowers and travel, and summer is a good place to escape the heat. But sometimes it is necessary to plan the route according to the situation. After all, many places are located in mountainous areas and plateaus, the weather changes rapidly, and the mountain roads are rugged, so you should pay attention to safety when traveling.

At present, this cable-stayed bridge and another cable-stayed bridge have been closed for maintenance due to heavy rain damage. According to Ms. Bai, a local villager, "In the past, both bridges could pass people and cars, but now they are damaged and can't pass." Witnesses at the scene also mentioned that it was raining heavily, the wind was too strong, the bridge swayed badly, the body was very strong, and the guardrail of the bridge was completely damaged.

May is the rainy season, and before the dragon boat water, it is easy to have strong winds and heavy rains. In the same period last year, there were also strong convective weather such as thunderstorms and strong winds in Guizhou during the 3-5 period, and the wind was as high as 5-6.

On May 3rd, tongren city Meteorological Observatory issued the yellow rainstorm warning signal: Precipitation of more than 50 mm has appeared in some areas, and this intensity is no longer suitable for traveling and is prone to disasters and accidents.

The intensity of rainstorm refers to the concentration of rainfall. Generally, it is expressed by the rainfall, maximum instantaneous rainfall intensity and hourly rainfall of a rainstorm. Units of measurement are usually expressed in millimeters/minutes or liters/(10,000 square meters). According to the regulations of China Meteorological Bureau, there are three grades according to the precipitation intensity, namely, the 24-hour precipitation of 50 ~ 99.9 mm is called "rainstorm", the rainfall below 100 ~ 249.9 mm is called "heavy rainstorm", and the rainfall above 250 mm is called "heavy rainstorm".

The rainstorm warning signal is divided into four levels, including blue, yellow, orange and red warning.

Blue warning:/kloc-within 0/2 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue.

Guide to defense: 1. The government and relevant departments should prepare for rainstorm prevention according to their duties; 2. Schools and kindergartens should take appropriate measures to ensure the safety of students and children; 3. Drivers should pay attention to road water and traffic jams to ensure safety; 4. Check the drainage system of cities, farmland and fish ponds, and prepare for drainage.

Yellow warning:? The rainfall will reach more than 50 mm within 6 hours, or it has reached more than 50 mm and the rainfall may continue.

Guide to defense: 1. The government and relevant departments should do a good job in rainstorm prevention according to their duties; 2. The traffic management department takes traffic control measures in heavy rainfall sections according to the road conditions, and implements traffic guidance in waterlogged sections; 3. Cut off the dangerous outdoor power supply in low-lying areas, suspend outdoor work in open-air places, and transfer people in dangerous areas and residents of dangerous houses to safe places for shelter from the rain; 4. Check the drainage system of cities, farmland and fish ponds and take necessary drainage measures.

Orange warning: within 3 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue.

Guide to defense: 1. The government and relevant departments shall, in accordance with their duties, do a good job in emergency preparedness for heavy rain; 2. Cut off dangerous outdoor power supply and suspend outdoor work; 3. Units in dangerous areas should suspend classes or business, and take special measures to protect the safety of students, children and other staff who have arrived at school; 4. Do a good job in the drainage of cities and farmland, and pay attention to prevent various geological disasters that may be caused.

Red alert:? Within 3 hours, the rainfall will reach 100 mm or above, or it has already reached 100 mm and the rainfall may continue.

Guide to defense: 1. The government and relevant departments should do a good job in rainstorm emergency rescue according to their duties; 2. Stop assembly, suspend classes and suspend business (except for special industries); 3 do a good job in the prevention and rescue of mountain torrents, landslides, mudslides and other disasters.

The preliminary forecast of the storm that day was yellow and harmless. Moreover, this strong convective weather is often dynamic, and it is not surprising that the iron cable bridge is twisted into a twist.