Caption: +1000-700 mb thickness (solid red contours every 2 dam). +1000-700 mb layer-averaged relative vorticity (shaded according to the colorbar every 2.0x10-5 s-1 starting at 2.0x10-5 s-1). +1000-700 mb layer-averaged wind (half barb=5 knots, full barb=10 knots, pennant=50 knots). +Image was generated from 1.0x1.0o NCEP GFS final analyses.