What color is the high temperature above a few degrees?

Lead: There will be a high temperature warning when it is hot in summer, which means it will appear when the highest temperature reaches a high level in a day. When the yellow high temperature warning is issued, it means that the weather is sultry. What is the temperature and color of hot weather? What color is it above a few degrees in hot weather? The following is what I have carefully prepared, hoping to help everyone!

What is the temperature and color of hot weather?

The standard of high temperature yellow warning signal is: the daily maximum temperature is above 35℃ for three consecutive days; The standard of high temperature orange warning signal is: the maximum temperature rises above 37℃ within 24 hours; The standard of high temperature red warning signal is that the maximum temperature rises above 40℃ within 24 hours.

Meteorology in China, when the temperature is above 35℃, it can be called "high temperature weather", and if the highest temperature exceeds 35℃ for several days, it can be called "high temperature heat wave".

Generally speaking, there are usually two kinds of high temperature, one is dry heat and high temperature with high temperature and low humidity; The other is hot and humid, which is called "sauna day".

If the weather exceeds 35℃ for several days, it means that the high temperature lasts for a long time, which is easy to cause disasters that people, animals and plants can't adapt to the high temperature weather. Red high temperature warning is the highest level of high temperature warning, which means that within 24 hours, the maximum temperature will rise to 40℃, and the high temperature at this time will easily lead to heatstroke.

How to defend against high temperature warning

When the meteorological warning indicates that the high temperature warning is yellow, people should take certain sun protection and heatstroke prevention measures when going out, and at the same time reduce outdoor working hours. Relevant units should also take measures to cool down, and the government should also take measures to deal with the high temperature. At the same time, people should pay attention to food safety in high temperature weather to avoid food bacterial reproduction caused by high temperature. When meteorological warning means orange warning, the relevant measures are similar to those of yellow high temperature warning.

When the weather reminds that the high temperature warning is red, you should stop working in the open air and not take a bath with cold water. When indoors, the air conditioning temperature should be controlled at around 28℃ to avoid getting sick due to too much cold air. Due to the high temperature weather, we should also pay attention to hygiene, drink plenty of water, replenish water for the body, improve preventive measures in high temperature weather, especially eat less and eat more meals to reduce the pressure on the stomach.

How does hot weather affect people's brain and behavior?

As the body gets hot, blood vessels will expand. This will lead to lower blood pressure, and the heart will work harder to send blood to the whole body.

It can cause slight symptoms such as swollen feet or prickly heat, which is caused by leakage caused by vasodilation.

At the same time, sweating can also lead to the loss of body fluids and salt, thus breaking the balance between the two.

Coupled with the decrease of blood pressure, it will cause heat failure, and its symptoms include: dizziness, nausea, fainting, confusion, muscle spasm, sweating and fatigue. If blood pressure is too low, it will increase the risk of heart attack.

Why does the body react like this?

This is because our bodies try to keep our body temperature around 37.5 degrees Celsius, whether in a snowstorm or a heat wave. It is the temperature at which our bodies function normally during evolution.

However, as the temperature rises, our bodies will work harder and try to lower the core body temperature. The body radiates heat to the surroundings by expanding more blood vessels on the body surface and starts to sweat.

If you see heatstroke, what should you do?

Generally speaking, if the heat exhaustion can cool down within 30 minutes, the problem will not be serious.

NHS, Britain's national health care agency, advises people to: move them to a cool place; Let them lie down and lift their feet slightly; Let them drink more water; Cool the skin, including spraying water or wiping it with a sponge, fanning the wind or applying an ice pack to the armpit or neck.

But if you don't get better within 30 minutes, you may get heatstroke next. Although people suffering from heatstroke are overheated, they may stop sweating and their body temperature may exceed 40 degrees Celsius. They may also have epilepsy or lose consciousness.

Who is at greater risk?

Old people, or people with long-term diseases, such as heart disease. They may not be able to cope with the stress caused by high temperature.

Diabetes makes the body lose water faster, and some complications will change the blood vessel condition and sweating ability.

In addition, homeless people are more exposed to the sun. People living in penthouses are more likely to face high temperatures.

Do some drugs increase the risk?

Drugs may increase the risk. People should take medicine normally, but they need to keep cool and keep enough water in their bodies.

Diuretics increase the amount of urine in human body. It has many uses, including treating heart failure. At high temperature, diuretics will increase the risk of dehydration, leading to imbalance of key minerals in the body.

Some drugs for epilepsy and Parkinson's disease will prevent the body from sweating and make it more difficult for the body to cool down.

If the body loses too much water, some drugs, such as lithium or statins, will lead to higher blood concentration, leading to health problems.

Will the heat wave kill people?

It is reported that about 2000 people in Britain die of high temperature every year. Most of them died of heart disease and stroke caused by their bodies trying to keep their body temperature stable.

Once the temperature exceeds 25 to 26 degrees Celsius, there will be a higher mortality rate. However, there is evidence that deaths are often caused by high temperatures in spring and early summer, not "midsummer".

This may be because with the arrival of summer, we begin to change our daily behavior, and we are more accustomed to dealing with the heat.