Real-time distribution of typhoon Bavi path

1. What is the specific path of Typhoon Bawei in Zhejiang? 2. Where is Typhoon Bavi? Where will Typhoon Bavi land in 2020? 4. How is the typhoon path calculated? 5. What is the current situation of Typhoon Bavi and where will it move? 6. How do typhoons form and move? What is the specific path of Typhoon Bavi in Zhejiang?

Typhoon refers to a tropical cyclone formed on the sea surface in tropical or subtropical areas, and the wind speed at the typhoon center is 12-13. Typhoon is a natural disaster. Typhoon No.8 in Zhejiang Province is Bawei, which was generated in the northern waters of Zhejiang Province. Typhoon crossing the border will cause great losses to residents' property and lives.

Typhoon Bawei was first formed on the east side of Taiwan Province Province, that is, on the vast sea surface of the Pacific Ocean. It then turned into a strong tropical storm and moved into the East China Sea in the evening.

The typhoon first formed on the 22nd, so all the moving paths are calculated from the 22nd.

But the most important thing is to pay attention to the duration of typhoon. How long will it affect people's daily life?

"Eight flavors move slowly. According to the statistics of relevant institutions, the impact can last until 26th, and Zhejiang Province will last at least 4-5 days.

Starting from the 23rd, it will move to the east-west direction at the speed of 12km per hour, and gradually strengthen, and the strongest intensity can reach the level of strong typhoon or super typhoon, which will have a long-term impact on the waters of Zhejiang Province. Therefore, Zhejiang province has begun to formulate relevant measures to deal with typhoons.

There will be 6-7 winds in the east of Taiwan Province Province, most of the East China Sea, the northern coast of Fujian and the coast of Zhejiang. The maximum wind force can reach gust 14- 15.

The moving path of typhoon basically comes from the southeast coast, which first affects cities along the southeast coast, such as Zhejiang, Guangdong and other cities, especially Taiwan Province Province, which is surrounded by the sea.

Studying the specific path of a typhoon is definitely not a prior act, and we can only make a rough guess by observing the existing moving path of the typhoon. But generally speaking, typhoons are formed by cyclones, and there are many climatic factors that affect cyclones. Any slight change will directly lead to the change of typhoon moving path.

The only thing we can actively respond to now is to improve our protective behavior, understand the changing behavior of the typhoon in time and make preparations in advance when the typhoon comes.

Where is Typhoon Bavi?

Typhoon Bawei landed in China's Bohai Sea, Bohai Strait, north-central Yellow Sea, southern Heilongjiang, south-central Jilin, most of Liaoning, coastal areas and Shandong Peninsula.

At about 8: 30 am on August 27, 2020, Bawei landed on the coast of North Pyongan Road near the border between China and North Korea. When landing, the maximum wind force near the center 12 (35 m/s, the lowest pressure in the center is 970 hectopascals.

On the morning of August 27th, it weakened into a severe tropical storm at 10, and its center was still located in North Pyongan Road of Korea, namely 40. 1 degree north latitude and 124.8 degree east longitude. Maximum wind force10 (28m/s, the lowest pressure in the center is 985 hectopascals.

Where will Typhoon Bawei land in 2020?

As we all know, typhoon is a popular weather phenomenon, and many places are often hit by typhoons, especially in the coastal areas of China. The situation of typhoons is different every year. Recently, a new typhoon Bawei has just been generated. So where will Typhoon Bawei land? Let's take a closer look!

Where will Typhoon Bawei land in 2020?

It is predicted that it will land in Liaoning Province, China.

On the afternoon of 25th 16:00, Typhoon Bawei sailed to the northern part of the East China Sea, located at the mouth of the China-Korea River (about1080km south of the mouth of the Yalu River), with the maximum wind force of 14 and the wind speed of 15 1 km/h, reaching a strong typhoon. According to the forecast of the Central Meteorological Observatory, Typhoon Bawei, with its strong intensity and great influence on the Northeast, may become the strongest typhoon that landed in Liaoning since 1949.

It is predicted that there will be winds of 8 ~ 1 1 in the northern East China Sea, the central and eastern Yellow Sea and the eastern coast of Liaoning from 25th to 27th. The gusts in the sea area near the typhoon center can reach 12 to 15, and the gusts 16 to 17. There are 6 ~ 7 winds in eastern Shandong, along the eastern peninsula of South China, and along the western coast of Hebei and Liaoning. Affected by Bawei, there were heavy rains in northern Jiangsu, central and eastern Shandong and most parts of Northeast China from 26th to 28th. Among them, there are heavy rains in southeastern Liaoning, central Heilongjiang and central Shandong.

How to defend against typhoons?

1, try not to go out.

2. If you are outdoors, please do not use dilapidated houses, factories, sheds, temporary buildings, projects under construction, and municipal public facilities (such as street lamps, cranes, building lifts, scaffolding, telephone poles, trees, billboards, iron towers, etc.). ). A place unaffected by the weather.

When the typhoon comes, please don't walk on dams or bridges in rivers, lakes and seas, and don't drive in areas affected by strong winds. If you have to go out for a walk, please put on colorful tight clothes and bend down to shrink your body when you walk to reduce the exposure of the wind. Try to avoid areas that are easy to enter water, such as underground passages. Please don't go barefoot or wear sandals during the typhoon. Rain boots are the best, rain proof, insulation and electric shock prevention. Cars should be extra careful when crossing roads with stagnant water. When there is a lot of water, it is best not to force it through. Watch out for water entering the engine. If you are on water (such as swimming), you should go ashore immediately to avoid the wind and rain.

4. If you are already in a solid house, close the window carefully and form a "meter" pattern on the window glass with adhesive tape to prevent the window glass from breaking.

5. When there is a thunderstorm and strong wind, turn off the household appliances in use in time and unplug the power supply; If water accidentally enters the house, please cut off the power immediately.

6. The rainstorm caused by typhoon is likely to cause floods, landslides, mudslides and other disasters. In disaster-prone areas and rainstorm areas, we must be vigilant and evacuate in time.

7. After the typhoon, attention should be paid to environmental sanitation and the safety of diet and drinking water.

Safety measures in typhoon days

1, try to stay indoors.

When a typhoon comes, it is often accompanied by storms, lightning and so on. Please try to stay at home at this time and consider your own safety. If you really need to go out, you must take corresponding safety measures.

2. Don't be depressed.

In case of a typhoon, we should try to avoid going to low-lying places. If our house is short, we'd better evacuate to a safe place to avoid flooding.

Step 3 walk safely

In typhoon weather, we must go outside, especially when there are buildings nearby, we need to be careful of falling things. When there is a strong wind, some flowerpots are easy to fall off, so you need to be careful when walking.

4. Don't bring an umbrella.

During typhoon and rainstorm, it is best not to use an umbrella when riding a motorcycle or bicycle, so as not to threaten your own safety.

5, prepare emergency supplies

When the typhoon comes, it is easy to lose power and flood. So we need to prepare emergency lights, emergency medicines, drinking water and food in advance.

6. Close the doors and windows carefully.

Before the typhoon comes, check the doors and windows of the house and close them in time. If there are small objects such as flower pots on the balcony, they should be collected in time to avoid falling and hurting passers-by.

7. Pay attention to electricity safety.

Test the leakage protection switch of household appliances. Don't turn on TV, computer and other equipment during lightning or thunder. It is not suitable for using solar water heaters, nor for touching metal objects such as gas pipes and water pipes.

How is the typhoon path calculated?

The calculation method and monitoring means of typhoon path include:

1, ground observation station

Ground observation stations are the most common observation data. At present, meteorological observation stations all over the province are automatic weather stations, which can realize automatic observation, automatic transmission and automatic decoding within five minutes.

The data returned by the weather station will be automatically generated by computer processing, and new data will be transmitted every 10 minute. The radar data of the whole province is updated every 6 minutes.

2. Sounding station

Sounding stations mainly rely on putting sounding balloons to monitor the atmospheric characteristics of each layer of the atmosphere. Although the sounding balloon looks a bit like an ordinary balloon, its connotation is very rich.

The sounding balloon will carry some equipment to observe the temperature, air pressure and wind speed at different heights during liftoff. These observation data are finally collected and distributed by the communication system, and the weatherman predicts the weather by analyzing these data.

3. Numerical weather forecast model products

In addition, forecasters will also apply numerical weather forecast model products. According to the atmospheric conditions at that time, it is a method to calculate various atmospheric equations by computer and predict the atmospheric motion state and weather phenomena in a certain period in the future. This is also one of the means of weather forecast and typhoon forecast.

In the process of typhoon forecasting, forecasters will also use the accumulated experience and methods for many years to consult relevant departments for many times. The Provincial Meteorological Observatory will consult with the Central Meteorological Observatory, the sister meteorological observatory and the local meteorological observatory, and reach a unified conclusion before releasing it to the public.

Prediction has "three difficulties"

A difficult task

The path is very complicated. Typhoon is a big guy, sometimes it is not dominated by various forces, and occasionally it shakes randomly from side to side, and its moving path may be 100 km away.

Ernan

Even if the path is predicted accurately, such as "eight-dimensional" prediction, and the track is locked early, there is great uncertainty in the intensity change.

Three difficulties

The path and intensity have been controlled, and the asymmetric structure after landing has also brought difficulties to the forecast. Wind and rain are often not in the center of typhoon, and it is difficult to judge where the wind and rain appear.

The above contents refer to Heilongjiang Daily-How is the typhoon predicted?

What is the current situation of Typhoon Bavi and where will it move?

This year's No.8 typhoon Bawei (English name: Bavi；; Name source: Vietnam; The meaning of the name: the name of the mountain in northern Vietnam has now been produced. Typhoon "Bavi" has been continuously strengthened since its generation, and it developed into a typhoon level on the 24th, with a central wind force of 12. According to analysis, Typhoon Bawei may become the first strong typhoon this year.

After the typhoon landed, "Bawei" mainly took the northward route, and gradually turned eastward during the northward process. The provinces it passes through are mainly Liaoning Province, Jilin Province and Heilongjiang Province. When it arrives in Heilongjiang Province, the "Eight Dimensions" will turn to the northeast.

Bawei is expected to land on the coast from eastern Liaoning to western South Korea on the morning of the 27th. After landing, it gradually turned to the northeast, and its intensity gradually weakened, degenerating into an extratropical cyclone. Affected by Typhoon Bawei, heavy rains occurred in parts of Jiangsu, Shandong and Northeast China today. It is estimated that there will be strong rainfall from south to north in Jiangsu, Shandong, Northeast China and eastern Inner Mongolia in the next three days. Residents in these places should pay close attention to the weather forecast and avoid traveling during typhoons.

Under the influence of Bawei and its surrounding cloud system, the winds in the eastern and northern seas of China, the eastern coast of Liaoning and the eastern coast of Shandong Peninsula will reach 8 ~ 1 1 in the next few days, and the winds in the nearby seas where the typhoon center passes will reach 12 ~ 15. In addition to strong winds at sea, the three northeastern provinces should pay special attention to gusts of 6-8. There will be gusts of 9- 10 in Liaoning and southeastern Jilin, and strong winds of 12- 13 in typhoon landing sites and nearby waters.

The wind and rain brought by this typhoon will affect crops such as corn, soybeans and rice in Northeast China. Because now is the key stage of the formation of these crop yields, we should pay special attention to prevent the serious harm of crop lodging and farmland waterlogging caused by heavy rainfall and typhoon.

How do typhoons form and move?

Because the subtropical high affects the typhoon movement, it depends on the environmental flow field it provides-strong enough to be in a guiding position. From the aspect of force, the subtropical high provides the horizontal pressure gradient force of atmospheric pressure field.

Typhoon is mainly affected by three forces on the vast sea surface: two external forces, namely geostrophic deflection force of atmospheric pressure field and horizontal pressure gradient force, and one internal force, namely typhoon internal force. The external force is far greater than the internal force. The movement of typhoon is mainly guided by the turning airflow in the environment, such as the airflow at the edge of subtropical high and the airflow in front of westerly trough.

The internal force of typhoon is the force produced by the north-south difference of geostrophic deflection force. Because the geostrophic deflection in the north of the typhoon is greater than that in the south, this difference between the north and the south will cause the internal force of the typhoon to move to the northwest.

On the way of typhoon "growth", there is a "big brother" who has a far-reaching influence on it-Northwest Pacific subtropical high (hereinafter referred to as subtropical high), which is located in the subtropical high area and is a broken warm and high pressure system. In summer in the northern hemisphere, it lurks over the northwest Pacific Ocean, and its powerful "body" controls the surrounding flow field-around it, the wind field at high altitude is usually clockwise.

Typhoons generated in the northwest Pacific are mostly generated at the southern edge of the subtropical high and usually move along the periphery of the subtropical high. Take the typhoon Bawei, which affected the Northeast this year, as an example. In the early stage of its development, the subtropical high stably "encircled" the east side of the typhoon, and Bawei moved northeast under the influence of its southwest airflow. When the intensity of typhoon is not as good as that of subtropical high, typhoon is naturally dominated by subtropical high.