Abstract:
This paper discusses the results of Multi-hazard Early Warning System (MHEWS) development
that combine weather prediction from Weather Research and Forecasting (WRF) and hydrometeorology
hazard index from National Disaster Management Authority (BNPB), Indonesia. Until now, the predicted
hazards in MHEWS that has been produced are flood, landslide, and extreme weather. These indices
were obtained by using overlay approach and resample methods so that the data have 100 m spatial
resolution. All potential hazard indices are classified into 4 status categories. These categories are “No
alert”, ‘Advisory”, “Watch”, and “Warning”. Flood potential was produced by using overlay methods
between 3-hours interval rainfall prediction and flood index. Landslide potential was produced from
overlay method between rainfall prediction and landslide index. Extreme weather potentials are divided
into 3 categories which are heavy rain, strong winds, and high wave. The whole of prediction is dynamic
following weather prediction in 3-hourly interval. Then, this hazard prediction results will provide “warning”
sign especially for the alert status “emergency”. This sign will be set up into notification system for making
user easier to identify the most dangerous hydrometeorology hazard event.
