Low Level Significant Weather Prog Charts are:
General VFR weather forecasts for flight planning up to 24,000 feet.
The surface prognostic chart outlines areas of:
2. IFR and MVFR weather.
On the bottom of the prog chart, you can find the criteria for:
2. MVFR.
On a prog chart, a freezing level at the surface is depicted by:
A zigzag line.
To obtain current information regarding cloud tops, icing, and turbulence check the:
Pilot reports (PIREPS).