Key Concepts for Today
¥Station Pressure and Surface Analyses
¥ Reduced to Mean Sea Level Pressure (SLP) PGF Corresponds to Pressure Differences
¥Upper-Air Maps
¥ On Isobaric (Constant Pressure) Surfaces   PGF Corresponds to Height Sloping Downhill
¥Contour Analysis
¥ Surface Maps-Analyze Isobars of SLP                     Upper Air Maps-Analyze Height Contours