Pre-Lab Information Purpose To use weather data to interpret atmospheric conditions and forecast weather Time Approximately 60 minutes Question How do atmospheric conditions influence weather patterns? Summary In this lab activity, you will create isobars, isotherms, and isodrosotherms on a weather map. You will then use weather station data to analyze current atmospheric conditions, identify fronts and weather patterns, and forecast future weather patterns. Safety Behavior in the lab needs to be purposeful. Report all accidents—no matter how big or small—to your teacher. Lab Procedure Gather materials. Colored pencils Create isobars. a) Use Map A located in the Data section. b) Start by connecting the points of highest air pressure. Draw a line to all the points with the same air pressure. Remember, isobars are smooth, rounded lines—not straight, jagged lines. c) Repeat Step b for each air pressure measurement. d) Label each isobar with the air pressure measurement. e) Label the