Caption: +850 (upper left), 700 (upper right), 600 (lower left), and 500 (lower right) hPa multipanel plot. +Ascent (solid contours every 0.1 Pa/s starting at -0.1 Pa/s; smoothed by 20 passes of a 9-point local smoother). +Nondivergent wind (standard barbs in knots). +Relative humidity (shaded according to the color bar in %). +Fields were computed from the 0.5x0.5o NCEP-GFS data.