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DT Theta, Wind, 925-850 hPa Relative Vorticity

Caption:
+Dynamic tropopause potential temperature (shaded according to the color bar in K).
+Dynamic tropopause wind (standard barbs in knots).
+925-850 hPa layer-average relative vorticity (solid contours every 5.0x10^-5 s^-1 starting at 5.0x10^-5 s^-1).
+Image was generated from 1.0x1.0^o NCEP-GFS data and the dynamic tropopause = 2.0 PVU.
+The latitude-longitude lines are every 15^o centered on the central point of 30^oN/60^oW.