Short-term Prediction Research
and Transition Center

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