You are given an analysis of 500-mb heights (green, in meters) and sea-level pressure isobars (blue, in mb) at 12 UTC on November 2, 2014. Centers of surface high and low pressure are indicated in white "H" and "L" with the accompanying central pressure. You are also given the frontal analyses from the Weather Prediction Center at 12 UTC and 15 UTC that day. Focus on the map of 500-mb heights. What upper-level feature was present over the middle of the United States at this time? In which state is the surface reflection of this upper-level feature centered? Referring to your answer in part (a), briefly explain why the surface reflection is in that location. You should incorporate the role that the upper-level feature played in its formation. Now focus your attention on the surface low-pressure system off the East Coast. Describe the location of the center of the upper-level low (in green) that is supporting the surface low. How do you know that this is a 500-mb low center and not an open 500-mb trough? Is the surface low occluded at 12 UTC? Justify your answer using information on the 12 UTC surface analysis. Is the low-pressure system off