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| MODEL | NGM | NAM | GFS | GFSx | TYPE | Norm | Inv |
| TIME | Initial | 6hr | 12hr | 18hr | 24hr | 30hr | 36hr | 42hr | 48hr | 4panel | Loop |
| PLOT | SL Pres/Prec | 1000 mb | 850 mb | 700 mb | 500 mb | 300 mb | Rel Hum/Lift | 4 Panel |
The 850 mb chart shows weather conditions at the 850 mb level or around 5000 feet above sea level. The parameters plotted are temperatures in Celsius (in color contours), heights in white lines and winds plotted as vectors.