Weather Service (62 questions)

Question 1

What weather is forecast for the FLORIDA area just ahead of the stationary front during the FIRST 12 HOURS?

Answer 1

Ceiling 1,000 to 3,000 feet and/or visibility 3 to 5 miles with CONTINUOUS precipitation.

Question 2

The remarks section for KMDW has RAB35 listed. This entry means

Answer 2

rain BEGAN at 1835z.

Question 3

To determine the freezing level and areas of probable icing aloft, the pilot should refer to the

Answer 3

Inflight Aviation Weather Advisories.

Question 4

When telephoning a weather briefing facility for preflight weather information, pilots should state

Answer 4

whether they intend to fly VFR only.

Question 5

How are Significant Weather Prognostic Charts best used by a pilot?

Answer 5

For determining areas to avoid (freezing levels and turbulence).

Question 6

Radar weather reports are of special interest to pilots because they indicate

Answer 6

LOCATION of precipitation with TYPE, INTENSITY, and cell MOVEMENT of precipitation (NOT TREND).

Question 7

When the term ‘light and variable’ is used in reference to a Winds Aloft Forecast, the coded group and windspeed is

Answer 7

9900 and less than 5 knots.

Question 8

Which in-flight advisory would contain information on severe icing NOT associated with thunderstorms?

Answer 8

SIGMET (severe icing, and severe or extreme turbulence)

Question 9

What is indicated when a current CONVECTIVE SIGMET forecasts thunderstorms?

Answer 9

Thunderstorms obscured by massive cloud layers.

Explanation:
Convective SIGMETs include:
-severe thunderstorms
-embedded thunderstorms
-line of thunderstorms
-thunderstorms greater than or equal to VIP (Digital video Interrogator and Processor) level 'A' affecting 40% or more of an area of 3,000 square miles.

Question 10

The section of the Area Forecast entitled ‘VFR CLDS/WX’ contains a general description of

Answer 10

clouds and weather which cover an area greater than 3,000 square miles and is significant to VFR flight operations.

Question 11

The marginal weather in central Kentucky is due to low

Answer 11

ceiling.

Explanation:
Visibility is normally entered to the left of the weather symbols. Since it is omitted, we know the visibilities are greater than 6 miles.

Question 12

What information is contained in a CONVECTIVE SIGMET?

Answer 12

Tornadoes, embedded thunderstorms, and hail 3/4 inch or greater in diameter.

Explanation:
Any convective SIGMET implies 
-severe or greater turbulence
-severe icing
- low-level wind shear

The forecast may be issued for any of the following:
Severe thunderstorms due to–
1. Surface winds greater than or equal to 50 knots OR
2. Hail at the surface greater than or equal to 3/4 inch in diameter OR
3. Tornadoes, embedded thunderstorms, lines of thunderstorms.