Cycling four times per day at 00Z, 06Z, 12Z and 18Z, this ensemble consists of seven members. The National Water Model (NWM) features a Medium Range ensemble forecast configuration. The model is initialized with a restart file from the Puerto Rico Analysis and Assimilation configuration and does not cycle on its own states. The model is initialized with a restart file from the Hawaii Analysis and Assimilation configuration and does not cycle on its own states.įorced with meteorological data from the NAM-NEST and HIRES WRF-ARW models, the Puerto Rico Short Range Forecast configuration cycles two times per day and produces hourly deterministic forecasts of streamflow and hydrologic states out to 48 hours. The model is initialized with a restart file from the Analysis and Assimilation configuration and does not cycle on its own states.įorced with meteorological data from the NAM-NEST model, the Hawaii Short Range Forecast configuration cycles four times per day and produces hourly deterministic forecasts of streamflow and hydrologic states out to 60 hours. Meteorological forcing data are drawn from the NAM-NEST and HIRES WRF-ARW NWP Models, while stream-gauge observations are assimilated from the USGS.įorced with meteorological data from the HRRR and RAP models, the Short Range Forecast configuration cycles hourly and produces hourly deterministic forecasts of streamflow and hydrologic states out to 18 hours. The Puerto Analysis also produces restart files each hour which are used to initialize the Puerto Short Range forecast simulation. This configuration is internally cycling, with each subsequent Puerto Rico Analysis starting from the previous hour’s run. The Puerto Rico Analysis and Assimilation configuration cycles hourly and produces a real-time analysis of the current streamflow and other surface and near-surface hydrologic states across the Puerto Rico domain. Puerto Rico / USVI Analysis and Assimilation:
Meteorological forcing data are drawn from the NAM-NEST NWP Model, while stream-gauge observations are assimilated from the USGS. The Hawaii Analysis also produces restart files each hour which are used to initialize the Hawaii Short Range forecast simulation. This configuration is internally cycling, with each subsequent Hawaii Analysis starting from the previous hour’s run. The Hawaii Analysis and Assimilation configuration cycles hourly and produces a real-time analysis of the current streamflow and other surface and near-surface hydrologic states across the Hawaii domain. Meteorological forcing data are drawn from the MRMS Gauge-adjusted and Radar-only observed precipitation products along with short range RAP and HRRR, while stream-gauge observations are assimilated from the USGS. The CONUS Analysis also produces restart files each hour which are used to initialize the short, medium, and long range forecast simulations. The exception is the 19Z CONUS Analysis cycle which ingests initial conditions from the Extended Analysis below. This configuration is internally cycling, with each subsequent CONUS Analysis starting from the previous hour’s run. The Standard Analysis and Assimilation configuration cycles hourly and produces a real-time analysis of the current streamflow and other surface and near-surface hydrologic states across the contiguous United States (CONUS). Output is prototype guidance and should not be considered an official NWS river forecast. Official river observations and forecast information:Ĭomments? Questions? Please Contact clicking the ‘I understand’ button, the user acknowledges that the NWM v2.1 The OWP also provides a range of NWS official water information through the following web sites. Comments regarding any of the experimental NWM products and web services should be submitted through the To improve the availability and quality of its products and services based on (snow depth, snow water equivalent) are available, as well as several useful reference maps from various sources. In addition to products from the NWM (streamflow, soil saturation), two products from the National Snow Analysis Please note, the mapping interface and NWM products and web services are experimental. The next version of the NWM will be released in the late spring 2020 time frame. Where scientific updates to the model can make the most improvement. The NWM is currently undergoing extensive validation and verification to identify Information about NWM products available through the OWP website can be foundĪdvisory: NWM products do not yet incorporate anthropogenic influence and The Office of Water Prediction (OWP) National Water Center provides water information products from version 2.1 To close, read and acknowledge the conditions listed at the bottom of this window.
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