What are levels of natural disaster risk due to storms, floods, overflows in Vietnam?

Level of natural disaster risk

Specific color

Risk

Level 1

Blue

Low

Level 2

Yellow

Average

Level 3

Orange

High

Level 4

Red

Extremely high

Level 5

Purple

Disasters

Levels of natural disaster risk

Levels of tropical depression and storm

Level 3

- Tropical depressions or level 8 to 9 storms occur on:

+ East Sea of Vietnam: Paracel Islands and Spratly Islands

+ Coastal territorial waters: Gulf of Tonkin, South of the Gulf of Tonkin, territorial waters along the coast of Quang Tri and Quang Ngai, territorial waters along the coast of Binh Dinh and Ninh Thuan, territorial waters along the coast of Binh Thuan and Ca Mau, territorial waters along the coast of Ca Mau and Kien Giang

+ The mainland of the North, Central and South parts of Vietnam.

- Level 10 to 11 storms occur on

+ East Sea of Vietnam: Paracel Islands and Spratly Islands

+ Coastal territorial waters, the mainland of the North and the Central parts of Vietnam.

- Very powerful storms of level 12 – 15 occur on the East Sea of Vietnam (including Paracel Islands and Spratly Islands).

Level 4

- Level 10 to 11 storms occur on mainland of the South part of Vietnam;

- Level 12 to 15 very powerful storms occur on coastal territorial waters, the mainland in North and Central parts of Vietnam;

- Level 16 and above superstorms occur on the East Sea of Vietnam (including Paracel Islands and Spratly Islands).

Level 5

- Level 12 to 15 very powerful storms occur on mainland of South part of Vietnam;

- Level 16 and above superstorms occur on the coastal territorial waters, mainland of North part and Central part of Vietnam.

Levels of natural disaster risk

Levels of flood and overflow

Level 1

- Flood level is from alert 2 to alert 3 at:

+ Downstream of multiple medium rivers;

+ Upstream of Ma river, Ca river, Dong Nai river, the Vu Gia - Thu Bon river, Ba river;

+ Major tributaries of the Red River – Thai Binh river;

+ Mekong Delta;

- Flood level is from alert 3 to 01 m more than alert 3 in multiple small rivers; upstream of multiple medium rivers.

Level 2

- Flood level from alert 2 up to alert 3 at:

+ Downstream of Ma river, Ca river, Dong Nai river, the Vu Gia - Thu Bon river, Ba river;

+ Downstream of the Red River – Thai Binh river;

- Flood level is from alert 3 to about 01 m more than alert 3 at:

+ Downstream of multiple medium rivers;

+ Upstream of Ma river, Ca river, Dong Nai river, the Vu Gia - Thu Bon river, Ba river;

+ Major tributaries of the Red River – Thai Binh river;

- Flood level is from about 01 m more than alert 3 to the highest flood level in history in multiple small rivers; the upstream of multiple medium rivers.

Level 3

- Flood level is from alert 3 to about 01 m more than alert 3 at:

+ Downstream of Ma river, Ca river, Dong Nai river, the Vu Gia - Thu Bon river, Ba river;

+ Downstream of the Red River – Thai Binh river;

- Flood level is from alert 3 to about 0.5 m more than alert 3 at the Mekong Delta;

- Flood level is from about 01 m more than alert 3 to the highest flood level in history at:

+ Downstream of multiple medium rivers; Ma river, Ca river, Dong Nai river, the Vu Gia - Thu Bon river, Ba river;

+ Major tributaries of the Red River – Thai Binh river;

- Flood level is above the highest flood level in history in multiple small rivers; the upstream of multiple medium rivers.

Level 4

- Flood level is from about 01 m more than alert 3 to the highest flood level in history at the downstream of Red River - Thai Binh river;

- Flood level is from 0.5 m more than alert 3 to the highest flood level in history at the Mekong Delta;

- Flood level is higher than the record flood level at:

+  Downstream of multiple medium rivers;

+ Ma river, Ca river, Dong Nai river, the Vu Gia - Thu Bon river, Ba river;

+ Major tributaries of the Red River – Thai Binh river.

Level 5

The flood level is higher than the highest flood level in history at the downstream of the Red River – Thai Binh river.