avaiation chatper 7

What information can you obtain from a surface analysis chart?

• Atmospheric pressure patterns with chart symbols depicting the positions of highs, lows, and fronts.

• Radar depiction of precipitation.

• Clouds and freezing levels associated with frontal activity.

Surface prog charts provide depictions of forecast

• surface pressure systems, fronts, and precipitation.

• aviation weather hazards, such as MVFR and IFR conditions, turbulence, and freezing levels.

• areas of probable turbulence, icing, and IFR conditions.

What information can be derived from the isobars on a surface analysis or surface prog chart?

• The isobars can be an indicator of freezing levels.

• When isobars are close together the visibility is low.

• Isobars can used to determine areas with strong winds.

You can refer to a low-level significant weather (SIGWX) chart

• for overall planning at all altitudes.

• to determine areas to avoid, such as those with turbulence or IFR conditions.

• for analyzing current frontal activity and cloud coverage.

Low-level significant weather (SIGWX) charts provide depictions of forecast

• surface pressure systems and fronts.

• aviation, weather hazards such as MFVR and IFR conditions, turbulence,and freezing

• areas of probable precipitation, including snow, and thunderstorms.

Which weather product provides a forecast for both severe and general thunderstorms?

• Convective outlook.

• Surface prog chart.

• U.S. low-level significant weather chart.

(Refer to Figure 19.) What is the forecast freezing level over Montana at 06Z?

• 8,000 feet MSL

• 10,000 feet MSL.

• 4,000 feet MSL.

(Refer to Figure 19.) What type of weather can be expected over Northern Georgia and South Carolina at 18Z?

• Moderate or greater turbulence.

• Ceilings between 1,000 and 3,000 feet MSL and/or visibility 3 to 5 miles.

• Ceilings less than 1,000 feet MSL and/or visibility less than 3 miles.

(Refer to figure 19.) What type of condition can be expected over Iowa at 06Z?

• Severe turbulence at 8,000 feet MSL.

• Moderate turbulence from the surface to 8,000 feet MSL.

• Freezing level at the surface.

You planned a route and obtained preliminary weather information to determine the feasibility of your flight. On the morning of your flight, an FAA-approved briefing consists of

• obtaining a standard briefing at 1800wxbrief.com.

• obtaining recorded weather by telephone at 1-800-WX-BRIEF (1-800-992-7433).

• viewing official weather reports, forecasts, and charts at AviationWeather.gov.