I claim the ornamental design for an umbrella storage compartment, as shown and described.
FIG. 1 is a perspective view of the umbrella storage compartment, showing my new design;
FIG. 2 is another perspective view of the umbrella storage compartment; and,
FIG. 3 is a perspective view of the umbrella storage compartment, shown in an opened position.
The broken lines showing the drivers' door and left side of the vehicle cockpit are for illustrative purposes only, and form no part of the claimed design.