Weather Tidbits: Contour

Contouring takes center stage in this Weather Tidbits. Contouring is the process of drawing isopleths, which are lines of constant or equal values. Any meteorological value can be contoured. This help meteorologists see patterns and weather variables change over a large area, but also locate systems and track their movements. They are 4 basic rules involving contouring. Isopleths should never cross, branch or fork, along with contour the area of the map that has data. Also, label or color-code your isopleths but use erasable colored pencils.