Using the Hydrologic Ensemble Forecast Service (HEFS)

### Produced by The COMET® Program

### 4.0 The Hydrologic Ensemble Forecast Service (HEFS) » 4.5 An Evolving Forecast Service

Currently (as of early 2017), not all HEFS functions have been fully evaluated and implemented in operations. For example, the Climate Forecasts (CFSv2) ingest and the EnsPost step for handling hydrologic model uncertainty will be evaluated at a later stage. The flowchart represents the full functionality that the HEFS will achieve after phased upgrades and enhancements.

For the HEFS Examples section, we will focus mainly on a 10-day HEFS time series forecast like this one. Examples do not have EnsPost processing unless otherwise indicated.