The 1000 mb chart also shows near surface weather conditions. The parameters plotted are 1000 mb temperature in Celsius (in color contours), convergence (black lines, interval=2, shaded > 0), 1000 mb dewpoints in Celsius (colored lines, interval=5, bold orange=20, bold white=15, bold red=0, bold magenta=-15, bold gray=-30) and winds plotted as vectors.