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PW, 925 hPa Theta, Wind, and 250 hPa Wind Speed

Caption:
+925 hPa wind (arrows in m/s).
+925 hPa potential temperature (solid red contours every 2 K).
+Total column precipitable water (shaded according to the color bar in mm).
+250 hPa wind speed (solid purple contours every 10 m/s starting at 30 m/s).
+Image was generated from 1.0x1.0^o NCEP-GFS data. The potential temperature was smoothed by 10 passes of a 9-point local smoother.