Plot Description: 500-hPa absolute vorticty shaded in x10^-5 s^-1, heights contoured in geopotential meters and winds from the Global Forecast System (GFS) and the European Centre for Medium-Range Weather Forecasts (ECMWF). The products are provided “as is” and are intended for research purposes only (disclaimer).

All model data provided courtesy of NOAA/NCEP or ECMWF.