Weather forecast on the topic average monthly air temperature + 2, + 4 ° С, which is about the norm. Night temperatures in the first decade will range from -7, -14 ° C to -1, -3 ° C, daytime from -3, + 1 ° C to

Weather forecast on the topic

The average monthly air temperature is + 2, + 4 ° C, which is about the norm.

Night temperatures in the first decade will range from -7, -14 ° C to -1, -3 ° C, daytime from -3, + 1 ° C to 4-8 ° C. By the middle of the month, the night temperatures will rise to + 2, + 4 ° C, daytime to 15-17 ° C. In the future, night temperatures will be saved within -3, + 3 °, daytime 10-17 ° C, at the end of the month 21-23 ° C.

The monthly rainfall is assumed to be 30-45 mm, which is less than the norm and about it. Small precipitation in the form of snow, wet snow and rain will be held at times during the month.

At the beginning and at the end of the month mostly without precipitation. It is possible to strengthen the wind to 15-18 m / s.

According to specialists of the FSBI Far Eastern UGMS and the Hydrometeorological bureau of Birobijan on the rivers of the region, the situation of stable, dangerous and adverse hydrological phenomena is not observed and is not projected.

As of March 20, winter regime prevails on the rivers of the region, plaintiffs are observed in some places. Water content is close to the usual, on the Amur, on the territory of the region – elevated. Water levels on Amur are above the norm by 0.9-1.7M, on other rivers near the norm (+ .5-20 cm).

The thickness of ice on March 20 on the Amur and on the rest of the rivers of the region is 40-94 cm, which is close to the average perennial values ​​(+ 10-20 cm).

On March 20, the largest snowmen 90-160%, in some places 180-300% of the norms are noted on the Upper Amur, in the Amur region, the smallest (less than 20%) in the middle course of p. Amur.

For most of the territory of the Jewish Autonomous Region – there is no snow, only in the irradiation municipal area of ​​snowmen within the normal range.

The ice thickness on the Amur River on the Pashkovo – Leninsky site is 40-94 cm., Which is close to the average long-term values.

Information on hydropostas is provided every 5 days.

For operational monitoring of the hydrological situation in the region, 21 hydropost is involved.

The opening of rivers and spring ice-frequency in the Jewish Autonomous Region occurs almost simultaneously throughout the region and in 2020 it is expected in time, close to the mid-year-old dates from the middle of the end of April.

2. Forecast (preliminary) emergency occurrence when passing a flood of 2020

5017 rivers take place throughout the territory of the region, most of them are small and medium. The largest rivers are longer than 100 km – Cupid, Bira (Big), Bira (Malaya), Bidjan, Sutar, Ikura, Ungun, Samara.

The overall length of the river network is 8231 km, its density in the mountain and foothill – 0.7 – 0.8 km / sq. Cm, in the lowland and swampy eastern part of the region – 0.1 – 0.3 km / sq. Km. All rivers area are in the pool r.Amur – one of the greatest rivers of Eurasia, which from the southwest, south and southeast, in a large arc, for 584 km, washes the territory of the region. The channel width of the western borders of the region (near the village of Pashkovo) is 1.5 km, near the eastern borders – 2.5 km. Amur is covered with ice for 5 months – from the end of November to the 20th of April. In winter, the ice thickness reaches 2 m, which allows cargo and passenger transportation along the river. Navigation lasts an average of 180 days. A number of large (more than 10 km long) and 1146 small (less than 10 km long) rivers belong to the Amur basin. These are Bira, Bijan, Birakan, In, Urmi, Ikura and others.

The opening of the rivers occurs almost simultaneously throughout the region at the end of the second – beginning of the third decade of April.

The main source of food for the region's rivers is summer and autumn rains. Floods of rivers caused by summer rainfall lead to river flooding, which often takes on the character of catastrophic floods. To protect settlements and agricultural land from floods, a network of protective dams and other structures has been created.

On the territory of the Jewish Autonomous Region, according to long-term observations, spring floods are not typical. Emergencies caused by spring floods were not recorded in the region for the entire observation period. There are no risks of floods during the spring flood in the JAO.

The situation on the rivers of the region at the time of freezing

Taking into account the hydrometeorological conditions prevailing on March 24, the opening of the rivers of the Amur basin and the rivers of the region is expected to be 3-4 days earlier than usual, in some places in the south 5-7 days earlier.

According to preliminary estimates, spring floods are expected with maximum water levels in the Middle Amur – near the norm and above, on the other rivers of the region near the norm and below. A short-term outflow of water to the floodplain is possible in some sections of small rivers, which is a common occurrence during the opening of rivers.

Floods of the hazardous phenomenon (HP) category are not expected in April-May in the region.

The opening of rivers, the formation of ice jams and spring floods are significantly affected by the weather conditions of spring, so these characteristics will be specified in early April.

During the period of ice drift, there is a possibility of ice jamming in certain sections of the rivers, which do not pose a threat to settlements, economic facilities and agricultural land and are accompanied by only minor flooding of the floodplain.

On the rivers of the JAO, a group of sections is distinguished where the formation of congestion is most likely:

1. Obluchensky municipal district – a site near the Bystraya pad, the mouth of the rivers flowing into the Amur-Khingan, Pompeevka, Shumyachikha;

2. Oktyabrsky municipal district – district with. Ekaterino-Nikolskoe, with. Nagibovo near the island of Krasny Yar, Union;

3. Leninsky municipal district – the mouth of the channel First, the area with. Resurrection;

4.According to the R. Biora Bira, the formation of congestion is possible at the confluence of the rivers of the SUTAR and CDR, in the area of ​​Art. Bira at the site of sharp bends of the river, in the area of ​​the biban.

The likelihood of the formation of spilling water levels in the territory of the EAO is estimated at 50-60%.

Taking into account the analysis of past years, dangerous Ice traffic police during the opening is not characteristic of the Amur River, including within the Leninsky Municipal District (at the area of ​​the Amur River in the area of ​​construction of the railway bridge over the Amur River (Heilongjiang) on ​​the Russian-Chinese State Border area in the area Mizhnovenskoye and G. Tongjiang Province of Heilongjiang (China People's Republic of China) and the objects of the bridge infrastructure), the probability of their formation in 2020 does not exceed 40-60%, but at the same time, the presence of anthropogenic factors (bridge structures, ice crossings, etc. d.) can provoke a slight short-term venture of ice.

On the opening of the rivers, the formation of ice congestion and spring floods have a significant impact of weather conditions, therefore the main characteristics of the passage of the spring flood will be refined throughout the spring period, taking into account the forecasts of the Far Eastern UGMS.

The main parameters affecting the nature of the development of the spring flood include: