PROG Chart

Question 1

The Low-Level Significant Weather Prognostic Chart depicts weather conditions

Answer 1

that are forecast to exist at a valid time shown on the chart.

Question 2

Which meteorological conditions are depicted by a prognostic chart?

Answer 2

Conditions forecast to exist at a specific time shown on the chart.

Question 3

(Refer to Figure 5.) What is the meaning of the symbol depicted as used on the U.S. Low-Level Significant Weather Prog Chart?

Answer 3

Showery precipitation covering half or more of the area.

Question 4

A prognostic chart depicts the conditions

Answer 4

forecast to exist at a specific time in the future.

Question 5

(Refer to Figure 7.) What weather conditions are predicted within area 7?

Answer 5

Forecast 4/8 to 6/8 coverage with cumulonimbus to FL 530

Question 6

(Refer to Figure 7, area 3.) What weather conditions are predicted within the innermost dashed yellow lines?

Answer 6

Severe turbulence associated with the jet stream between FL 300 and FL 370

Question 7

(Refer to Figure 7.) What weather conditions are predicted within the yellow dashed line in area 2?

Answer 7

Moderate turbulence at FL 370 that extends below the chart

Question 8

(Refer to Figure 7.) At what level is the tropopause in area 5?

Answer 8

The tropopause is at FL 530

Question 9

(Refer to Figure 7.) What weather conditions are predicted within area 6?

Answer 9

Occasionally embedded cumulonimbus up to FL 450

Question 10

(Refer to Figure 18.) You are planning to depart western Oklahoma for a destination in eastern Tennessee. According to the 12-hour prognostic, what flight conditions do you expect?

Answer 10

IFR departing and then conditions improving as you progress eastbound.

Question 11

(Refer to Figure 18.) What are the weather conditions over central Oklahoma on the 12-hour prognostic?

Answer 11

IFR.

Question 12

(Refer to Figure 7.) At what level is the tropopause in area 4?

Answer 12

FL340.

Question 13

(Refer to Figure 18.) What are the weather conditions over eastern Colorado on the 12-hour prognostic?

Answer 13

VFR.

Question 14

(Refer to Figure 18.) What are the weather conditions along the southern half of the California coastline on the 12-hour prognostic?

Answer 14

Ceiling less than 1,000 feet and/or visibility less than 3 miles.

Question 15

(Refer to Figure 7.) What does the “530” next to area 8 represent?

Answer 15

The average height of the tropopause.