Forecasting and Warning of Meteorological and Hydrological Conditions for Very Short-term and Short-term Durations

Circular 42 stipulates the forecasting and warning elements and phenomena, including:

- Forecasting and warning values of hydrological elements including: Water level, flow rate, and other hydrological factors (if any);- Forecasting and warning times of the appearance of hydrological phenomena;- Forecasting and warning the likelihood and scope of the appearance of hydrological phenomena.

In addition, Circular 42 also stipulates the evaluation of the quality of forecasted and warning values as follows:

- The error of forecasted and warning values is determined in Clause 1, Article 6 of this Circular;- The quality of forecasted and warning values is determined in Clause 4, Article 11 of this Circular.

The evaluation of the quality of the forecasted and warning time of hydrological phenomena appearance is stipulated as follows:

- The error of the forecasted and warning time of hydrological phenomena appearance is determined in Clause 1, Article 7 of Circular 42;- The quality of the forecasted and warning time of hydrological phenomena appearance is determined in Article 12 of Circular 42.

Regarding the evaluation of the likelihood and scope of the appearance of hydrological phenomena:

- The quality of forecasting and warning the likelihood of hydrological phenomena appearance is determined in Article 13 of Circular 42;- The quality of forecasting and warning the scope of hydrological phenomena appearance is determined in Article 14 of Circular 42.

See details in Circular 42/2017/TT-BTNMT, effective from December 8, 2017.

-Thao Uyen-

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