Current hydromet conditions in theSoutheast Asia (SEA) region along with expected futureconditions highlight the need for continued investment inmodernizing hydrometeorological services in the SEA region.Given that similar hazards face Cambodia, Lao People'sDemocratic Republic (PDR), and Vietnam, and that thecountries have similar data and hydromet information needs,there are benefits to taking a regional approach tomonitoring and forecasting hazardous hydromet conditions.The countries have different capabilities, but nonetheless,with more intense hazardous hydromet events taking place andlikely to occur in the future, building a regional dimensionto hydromet services can save on the cost of capitalinfrastructure as well as sustainable operation andmaintenance. A number of initiatives that focus on thedifferent stages of the monitoring and forecasting process -such as data collection, forecasting, dissemination ofimpact-based forecasts and early warnings, and delivery ofweather, climate, and hydrological services - can beutilized by sub regional and national hydromet serviceproviders, including in the SEA region. Existing regionalframeworks and initiatives in the SEA region can helpaddress some of the major challenges that nationalhydrometeorological service providers face.