700 hPa height (solid contours every 3 dam), temperature (green dashed contours every 3oC), Q-vectors (arrows in x10-7 Pa m-1 s-1), and Total RHS (neglecting the Beta term) of QG Omega equation (shaded in x10-12 Pa m-2 s-1) (Q-vector form).
NCEP GFS analyses and forecasts on 1x1 latitude-longitude grid are smoothed with a 9-point local smoother run 30 times.