300 mb map - solid lines are isoheights in hundreds of meters, shading is the wind speed in knots (see legend) (from NOAA); e 1. Describe specific visual evidence (i.e., patterns in the contours, symbols and/or other information on the map) of ONE indicator that promotes mid-latitude cyclone development 2. Describe the relative location of this indicator with respect to the surface low-pressure center (annotated on the 500 mb map with an "L"). 3. Explain specifically how the presence of this indicator promotes mid-latitude cyclone development.