What important information is provided by the Radar Summary Chart that is not shown on other weather charts?

Which forecast provides specific information concerning expected sky cover, cloud tops, visibility, weather, and obstructions to vision in a route format?

When are severe weather watch bulletins (WW) issued?

(Refer to figure 9.) The Severe Weather Outlook Chart depicts

A pilot planning to depart at 1100Z on an IFR flight is particularly concerned about the hazard of icing. What sources reflect the most accurate information on icing conditions (current and forecast) at the time of departure?