Units are hundredths of inches.
Also plotted is the convective precipitation, with the same contour interval as the total precipitation, using thin red lines. Imagine the wind symbols are the bottom half of arrows, traveling in the same direction as the wind. Add up the wind values for all the barbs on a wind symbol to get the full wind speed. The zero degree isotherms at 850 mb and at 1000 mb are used to diagnose and forecast precipitation type. The 1000 mb 0 C isotherm is the thick red line, while the 850 mb 0 C isotherm is the red and white striped line.