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A cold air strike

People feel ahead again

Take warm and cold

Today, the snowfall weather in the north is significantly weakened.

Rainfall and strong convective weather in the southern region

Will be the protagonist

On the 14th night to 15 days, the cold air is affected, and the rainfall in the city of Ergun City in Inner Mongolia Autonomous Region. Photography: Ding Liting

1.

This year’s first rainstorm warning

Southern need to be vigilant

This morning, the central weather station released the first rainstorm blue warning this year.

, Expected,

14:00 to 17 March 16th

Nandida, Hubei, most of Anhui, Zhongnan, Jiangsu, Western Hunan, Northern China, Southeast, Guizhou, Northeast, Guangxi, etc., of which

Hunan Northeast and Western, Hubei Middle East, southern Henan, Southern Anhui, Southwest Jiangsu, Southeast Guizhou, Northeast Guangxi, etc.

,

Eastern Hubei, there are heavy rain in the southwest of Anhui

(100 ~ 120 mm), the above parts are accompanied by short-term strong precipitation (maximum hourly rainfall 20 to 50 mm, the local area can exceed 60 mm),

There is a thunderstorm, or hail, etc.

At the same time, a strong convective weather blue warning is also released.

. It is expected that the main influence of strong convection is the afternoon to night.

Everyone needs to pay attention to the approach to the weather forecast warning and do a good job.

2. “Jumping Cliff” cools!

keep warm!

There is a warm in the early stage, and there is a cold air after crossing!

Everyone pays attention! The clothes that have been collected have come out again!

Affected by rain and snow and cold air, from 16 to 17, the temperature in the central and eastern region will fall by 4 to 10 ° C.

Some areas cool down 12 ° C or higher

, The lowest temperature is 0 ° C line South Press North China to the western part, and accompanied by 4 to 5 winds, gusts 6 to 8.

also,

Night to 18th

Most of North China, there are two rain and snow processes in the southeast of the northeast, which is mainly in small to the snow or rain, and the snow weather.

Inner Mongolia, north of Hebei, north, eastern Liaoning, etc.

3. Is this process come to “reverse the cold”?

These two days, the report on “Spring Festival” has received attention with the arrival of cold air. Is this process calculated that “reverse the cold”? What is “reverse spring cold”? In response to these problems, we interviewed the Central Meteorological Observatory’s chief meteorological expert Mao Xi.

Question 1: Northern counting nearly 10 ° C

Does this cool down be “reverse spring cold”?

answer

the answer is negative. Mao Xi said that this cooling process has not reached the standard of “reverse spring”, and the impact on agriculture is not big.

At present, the northern has just entered the spring, and the winter wheat is in winter, returning to green or proceps, with strong cold resistance, and the fruit tree has not blunded.

Recent weather process, the north will not happen “reverse spring cold” disaster

However, in turn, the water is promoted to the wheat field, and it is beneficial to the wheat.

The drought in the early stage of the northern part of Anhui is expected to relieve it, which is beneficial to the growth of winter wheat. Cooling is not much affected against winter wheat and fruit trees in the north. The south also concludes that the disaster of “reverse the cold”, the South Rice seedling is just nowhere, the temperature rise is not large, the time is not long, and it will not cause a large area of ​​early rice rotten seeds.

Question 2: What is it “reverse the cold”?

When will I happen?

Mao Xi said that “the spring cold” has clear standards in meteorological, according to the “Spring Festival” “GB / T 34816-2017”, “GB / T 34816-2017” developed in 2017, is mainly referring to spring (March to May to May) “Pre-warmth, late cold”, and the late temperature is significantly lower than the normal year.

The word “pour” in the spring is reflected in the cold.

Generally occurring in the north to May, the south will occur in 3 to May.

Question 3: What impact will it bring to agriculture?

“春”

It can be described as a frequent visitor in spring, which affects the scope of the country. From January to April, South China and Jiangnan have entered the early season of early rice. During this period, the air and air confrontation is active. When the northern cold air arrives in Jiangnan and South China, the air and cold air is strong, which often causes low temperature rainy weather.

The temperature in the same day is ≤12 ° C and lasts for 3 to 5 days or more, or in a short time, the temperature dropped sharply, and the lowest temperature dropped below 5 ° C.

It is possible to cause early rice and dead seedlings.

The north “reverse the cold” mainly affects the winter wheat and fruit trees. The first spring temperature is high, the winter wheat enters the knot, the gestation, even the flowering period, the fruit tree enters the flowering or the young fruit, the cold ability has dropped sharply, and the spring is cold and air invaded. The temperature is obviously decreased, and the “reverse spring” is even more frost, will It is highly affected to the production of winter wheat and forest fruit (such as peach, apricot, walnut, grape, etc.), which leads to substantial reduction in production, and forest fruit even absorbed.

Image Source: China Meteorological Newspaper Graphline “What is cold? “

Tips

Meteorological experts remind,

Strong rainfall and strong convective weather in the southern region

It is about to go online, the public needs to pay attention to the forecast warning information released by the local meteorological station, and arrange trips reasonably, carrying rain tools with you;

at the same time,

The temperature drop in the central and eastern region is clear

The public needs to add clothes to add clothes, keep warm measures, and beware of colds.

China Meteorological Procraction and Science Center (China Meteorological News)

Reference:

Central Meteorological Observatory

expert consultant:

Central Meteorological Observatory CEO Mao Yu

Editor: Zhang Juan

Audit: Cui Guihui

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