Caption: +200 hPa geopotential height (solid black contours every 6 dam). +925 hPa wind speed (shaded according to the color bar in m s-1). +925-850 hPa layer averaged relative vorticity (solid red contours every 8x10-5 s-1 starting at +12). +850-200 hPa vertical wind shear (standard barbs; red > 20 kt; green < 20 kt).