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

What type of Inflight Weather Advisories provides an en route pilot with information regarding the possibility of moderate icing, moderate turbulence, winds of 30 knots or more at the surface and extensive mountain obscurement?

The Hazardous Inflight Weather Advisory Service (HIWAS) is a broadcast service over selected VORs that provides

To obtain a continuous transcribed weather briefing including winds aloft and route forecasts for a cross-country flight, a pilot could monitor

When total sky cover is few or scattered, the height shown on the Weather Depiction Chart is the