Real-time mesoscale model forecasts using the Weather Research and Forecasting (WRF) model are being produced out to 36 hours once daily at NOAA's National Severe Storms Laboratory (NSSL). The current model configuration employs a 4 km domain that covers the continental United States. Specific details on the model configuration are provided in the table below. These forecasts will be disseminated to the Huntsville WFO to supplement the model output available from the National Centers for Environmental Prediction (NCEP).
 Continental US |
Model Configuration |
|
Version |
2.2 |
Dynamic core |
Advanced Research WRF (ARW) |
Horizontal grid size |
980 x 750 |
Vertical levels |
35 |
Horizontal grid resolution |
4 km |
Initial and lateral boundary conditions |
NCEP Eta 212 grid |
Computational platform |
SGI Altix 4700 (64 procs) |
Simulation length |
36 hours |
Time step |
24 seconds |
Cloud microphysics |
WSM6 Scheme |
Shortwave radiation |
Dudhia Scheme |
Longwave radiation |
RRTM Scheme |
Land surface physics |
Noah Land-Surface Model |
PBL physics |
MYJ scheme |