What are hydrometeorological forecasts? What are the regulations on the duration of hydrometeorological forecasts in Vietnam? – Ngoc My (Binh Dinh, Vietnam)
Article table of contents
What are hydrometeorological forecasts? Duration of hydrometeorological forecasts in Vietnam (Internet image)
1. What are hydrometeorological forecasts?
Hydrometeorological forecasts mean the provision of information and data about conditions, developments and phenomena of hydrometeorology in the future at a certain area in a specified period of time.
In there:
- Hydrometeorology is a phrase that commonly refers to meteorology, hydrology, and oceanography.
- Meteorology refers to the state of the atmosphere, developments of natural phenomena in the atmosphere.
- Hydrography refers to the state, developments and movement of water on earth.
(Article 3 of the Law on Hydrometeorology 2015)
2. Duration of hydrometeorological forecasts in Vietnam
The duration of hydro-meteorological forecast in Vietnam is prescribed as follows:
- Weather forecast and warning period:
+ Extremely short duration: forecast, warning up to 12 hours.
+ Short duration: forecast, warning from over 12 hours to up to 72 hours.
+ Medium duration: forecast, warning from more than 3 days to a maximum of 10 days.
- Duration of climate forecasting:
+ Long duration: forecast, warning from more than 10 days to a maximum of 01 month.
+ Seasonal duration: forecast, warning from over 01 month to maximum 06 months.
+ Year-to-year duration: forecasting, warning from over 06 months to a maximum of 12 months.
- Duration of hydrological forecasting and warning:
+ Extremely short duration: forecast, warning up to 12 hours.
Short duration:
++ For large rivers, except for the Mekong River: forecasts and warnings from over 12 hours to up to 48 hours;
++ For the Mekong River: forecasts and warnings from over 12 hours to up to 05 days;
++ The remaining rivers: forecast, warning from over 12 hours to up to 24 hours.
Medium duration:
++ For large rivers, except for the Mekong River: forecasts and warnings from over 48 hours to a maximum of 10 days;
++ For the Mekong River: forecasts and warnings from over 05 days to a maximum of 10 days;
++ The remaining rivers: forecast, warning from over 24 hours to up to 10 days.
+ Long duration: forecast, warning from more than 10 days to a maximum of 01 month.
+ Seasonal duration: forecast, warning from over 01 month to maximum 06 months.
- Duration of forecasting water sources:
+ Short duration: forecast up to 07 days.
+ Medium duration: forecast from over 07 days to a maximum of 15 days.
+ Long duration: forecast, warning from 15 days to maximum 01 month.
+ Seasonal duration: forecast, warning from over 01 month to maximum 06 months.
+ Year-to-year duration: forecasting, warning from over 06 months to a maximum of 12 months.
- Duration of oceanography forecasts and warnings:
+ Extremely short duration: forecast, warning up to 12 hours.
+ Short duration: forecast, warning from over 12 hours to up to 03 days.
+ Medium duration: forecast, warning from more than 3 days to a maximum of 10 days.
+ Long duration: forecast, warning from more than 10 days to a maximum of 01 month.
+ Seasonal duration: forecast, warning from over 01 month to maximum 06 months.
- Duration of other hydro-meteorological forecasts and warnings:
+ Duration of hydro-meteorological forecasting for agriculture
++ Short duration: forecast, warning up to 03 days;
++ Medium duration: forecast, warning from more than 3 days to a maximum of 10 days;
++ Long duration: forecast from over 10 days to a maximum of 01 month;
++ Seasonal duration: forecast from over 01 month to maximum 06 months.
+ Cold air forecast period
+ Short duration: forecast, warning up to 03 days.
- Duration of general hydro-meteorological forecast: comply with the term of the component message with the longest forecast period.
- Duration of thematic forecast at the request of the user: made on the basis of an order or agreement between the user and the agency, organization, or individual that issues the forecast and warning bulletins.
- Duration of hydrometeorological forecasts and warnings according to international treaties to which the Socialist Republic of Vietnam is a contracting party: comply with international treaties to which the Socialist Republic of Vietnam is a signatory.
(Articles 4 to 9 of Circular 08/2022/TT-BTNMT)
Diem My
- Key word:
- hydrometeorological forecasts in Vietnam
