What disasters will the cold wave cause? The fifth round of large-scale cold wave has arrived this winter.

Cold wave is a natural disaster that we are all familiar with, and it will also bring many disasters. What disasters will it cause? Has the fifth round of large-scale cold wave come this winter? Many friends want to know the answer to this question. Let's have a quick look.

What disasters will the cold wave cause? When the cold wave crosses the border, it is often accompanied by strong winds, sharp cooling, rain and snow. After the cold wave, there will be severe freezing or frost. Cold wave and strong wind will not only make fishing boats at sea or in rivers and lakes capsize and die, but also break trees, destroy houses, blow off ripe fruits and cause harvest losses. Cold wave is a disastrous weather in winter. After autumn, the cold air from north to south will gradually increase. If the average daily temperature drops by more than 10℃ and the lowest temperature is lower than 5℃ within 24 hours, the strong cold air is called a cold wave. This cold air is formed in the Arctic, Siberia and the Mongolian Plateau. When the cold air is strengthened to a certain extent, it will go south. Due to the strong north wind and severe cooling, frost or freezing often occurs in the area where its front reaches. If the warm air is very active before the cold wave goes south, it may also cause rain or snowfall, or even freezing rain.

The fifth round of large-scale cold wave hit this winter, and the Central Meteorological Observatory issued a blue warning of cold wave at 18 on February 5, 2008: due to the influence of cold air, it is expected that the temperature in most parts of central and eastern China will drop by 6 ~ 10 from 20: 00 on February 6. On the morning of 65438+February 65438+February, the lowest temperature line of 0℃ is located in the area from the northeast of Jiangnan to the north of Sichuan Basin. There are 4 ~ 5 northerly winds and 6 ~ 8 gusts in Inner Mongolia, Northeast China and North China. There will be 7 ~ 8 winds and gusts of 9 ~ 10 in the eastern and southern seas of China. Affected by strong cold air, the temperature dropped significantly from 16 to 17. /kloc-sunny on 0/9, southerly winds are 3 ~ 4, the lowest temperature is about -4℃ in Jiyang District, Laiwu District, Gangcheng District, Shanghe County and Nanshan District, and the urban area and other counties are about-1℃, and the highest temperature is about 10℃. 20 ~ 2 1 sunny, the south wind turns to the north wind 2 ~ 3, and the highest temperature is about 13℃. From 22 to 23, it turned sunny and cloudy. The north wind gradually increased from 2 to 3 to 3, and the gust was 6, and the temperature dropped.

What are the hazards of the cold wave? What cold waves attack cold waves and strong cold air usually bring strong winds and cool weather? Cold waves and strong winds are a great threat to coastal areas, such as the cold wave on April 2 1 ~25, 1969. Strong winds hit China's Bohai Sea, Yellow Sea, Hebei, Shandong, Henan and other provinces, with land winds of 7~8 and offshore winds of 8~ 10. At this time, it was the astronomical tide, and the outbreak of cold wave caused the rare storm surge in Bohai Bay and Laizhou Bay for decades. On the northern shore of Shandong Province, the sea water rose by more than 3 meters, washed away the seawall by more than 50 kilometers, and the sea water flowed backwards for 30~40 kilometers. The freezing rain, snow and ice weather brought by the cold wave is extremely harmful to transportation. For example, 1987 1 1 A cold wave process in the last ten days caused the turnouts of several stations under the jurisdiction of Harbin, Shenyang, Beijing and Urumqi to freeze, the tracks were buried by snow, the communication signals failed, and the train operation was blocked. After the rain and snow, the roads were frozen and skidded, and traffic accidents increased obviously. Cold wave is very harmful to human health. The windy and cool weather can easily lead to colds, tracheitis, coronary heart disease, cor pulmonale, stroke, asthma, myocardial infarction, angina pectoris, migraine and other diseases, and sometimes make patients worse.

What does the tide of cold wave mean? Cold wave is a natural weather phenomenon. Refers to the cold air from high latitudes, which is rapidly strengthened in a specific weather situation and invades the middle and low latitudes, causing a wide range of severe cooling, strong winds and rain and snow weather along the way. When this cold air reaches a certain standard, it is called a cold wave. Cold wave is cold air from polar regions or cold zones in winter, which invades the middle and low latitudes on a large scale like tides. When a cold wave strikes, the temperature will drop sharply, accompanied by strong winds, rain and snow. It has a serious impact on industrial and agricultural production, people's lives and human health.