The fields plotted all come from NCEP's RUC (Rapid Update Cycle) operational forecast model.
All data are from the hourly analysis, not forecast times, and are at 40km resolution.
Timeliness and/or quality control are not guaranteed, so be aware of the times posted on the images.
Surface Pressure - altitude adjusted surface pressure (isosigma p)
500mb Heights - height of the 500mb surface (isobaric z)
200mb Heights - height of the 200mb surface (isobaric z)
450mb PV - potential vorticity on the 450mb surface (isobaric PV)
Tropopause Potential Temperature - potential temperature on the 2PVU surface (isertelic θ)
