After heavy rain, many provinces and cities face a very high risk of flash floods and landslides.

On the day and night of October 1, the Northern region and Thanh Hoa and Nghe An will have scattered showers and thunderstorms, with some places experiencing heavy rain with rainfall ranging from 20-40mm, and some places experiencing over 80mm. These are also the areas at highest risk of flash floods and landslides.

According to the National Center for Hydro-Meteorological Forecasting, last night and early this morning (October 1), in the Northern region, Thanh Hoa and Northern Nghe An, there were scattered showers and thunderstorms, with some places experiencing heavy to very heavy rain. The rainfall from 7:00 p.m. on September 30 to 3:00 a.m. on October 1 was over 80mm in some places, such as: Ho Thau 1 station (Tuyen Quang) 88.2mm, Chieng Noi station (Son La) 90.5mm, Giao An station (Thanh Hoa) 123.4mm, Tam Hop 2 station (Nghe An) 154.2mm,...

During the day and night of October 1, the Northern region and Thanh Hoa and Nghe An will have scattered showers and thunderstorms, with some places experiencing heavy rain with rainfall of 20-40mm, and some places experiencing over 80mm. Warning of the risk of heavy rain (>80mm/3 hours).

The risk of flash floods and landslides after heavy rain in many provinces is very high.

Thunderstorms may produce tornadoes, lightning, hail, and strong gusts of wind. Localized heavy rain may cause flash floods in small rivers and streams, landslides on steep slopes, and inundation in low-lying areas.

In the past 24 hours (from 4am on September 30 to 4am on October 1), the Northern provinces, Thanh Hoa and Nghe An have had heavy rain, some places have had very heavy rain. The soil moisture model shows that some areas in the above provinces are nearly saturated (over 85%) or have reached a saturated state.

In the next 3-6 hours, the above provinces will continue to have rain with common accumulated rainfall as follows: Son La, Lao Cai, Tuyen Quang, Thai Nguyen, Phu Tho and Thanh Hoa from 30-60mm, some places over 100mm; Cao Bang, Lang Son, Bac Ninh and Nghe An from 10-30mm, some places over 60mm.

In the next 6 hours, there is a risk of flash floods on small rivers and streams, landslides on steep slopes in many communes/wards due to flash floods, landslides, and land subsidence caused by heavy rain or water flow: Level 1; Thai Nguyen, Lao Cai, Cao Bang level 2; Phu Tho, Tuyen Quang level 3.

Flash floods and landslides can have very negative impacts on the environment, threaten people's lives; cause local traffic congestion, affect the movement of vehicles; destroy civil and economic works, causing damage to production and socio-economic activities.

Weather forecast for regions across the country on October 1:

Hanoi

Cloudy, with occasional showers and thunderstorms in the morning and at night. Southeast wind level 2-3. Thunderstorms are likely to produce tornadoes, lightning, and strong gusts of wind.

Lowest temperature 24-26 degrees, highest 29-31 degrees.

Northwest

Cloudy, scattered showers and thunderstorms during the day, locally heavy rain; scattered showers and thunderstorms at night. Light wind. Thunderstorms may produce tornadoes, lightning, and strong gusts of wind.

Lowest temperature 22-25 degrees, some places below 22 degrees; highest 27-30 degrees, some places above 30 degrees.

Northeast

Cloudy with scattered showers and thunderstorms, locally heavy rain. Southeast wind level 2-3. Thunderstorms may produce tornadoes, lightning and strong gusts of wind.

Lowest temperature 23-26 degrees, mountainous areas below 22 degrees; highest 29-32 degrees.

Thanh Hoa to Hue

Cloudy, scattered showers and thunderstorms in the North (Thanh Hoa - Nghe An), heavy rain in some places; sunny in the South, scattered showers and thunderstorms in the evening and at night. Light wind. There is a possibility of tornadoes, lightning and strong gusts of wind in thunderstorms. Lowest temperature 23-26 degrees, highest 30-33 degrees.

South Central Coast

Cloudy, sunny during the day, with showers and thunderstorms in some places in the late afternoon and evening. Light wind. Thunderstorms may include tornadoes, lightning, hail, and strong gusts of wind. Lowest temperature 24-27 degrees Celsius, highest 31-34 degrees Celsius.

Central Highlands

Cloudy, scattered showers and thunderstorms, scattered showers and thunderstorms in the afternoon and evening. Light wind. Thunderstorms may include tornadoes, lightning, hail and strong gusts of wind. Lowest temperature 19-22 degrees, highest 27-30 degrees, some places over 30 degrees.

Southern Vietnam

Cloudy with scattered showers and thunderstorms, scattered showers and thunderstorms in the afternoon and evening. Light wind. Thunderstorms may include tornadoes, lightning, hail and strong gusts of wind. Lowest temperature 23-26 degrees Celsius, highest 30-33 degrees Celsius.

Ho Chi Minh City

Cloudy with scattered showers and thunderstorms, scattered showers and thunderstorms in the afternoon and evening. Light wind. Thunderstorms may include tornadoes, lightning, hail and strong gusts of wind. Lowest temperature 24-26 degrees Celsius, highest 30-32 degrees Celsius.

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Source: https://baolaocai.vn/sau-mua-lon-nhieu-tinh-thanh-doi-mat-voi-nguy-co-rat-cao-lu-quet-sat-lo-dat-post883355.html