Winds and Temperatures Aloft (FB) & Prognostic Charts

Question 1

BL IFR The temperature at one of the forecast altitudes omitted in the Winds and Temperatures Aloft Forecast (FB)?

Accepted Answer

The level is within 2500ft of station elevation

Question 2

BL IFR In the winds and Temperatures Aloft Forecast (FB) wind forecasts are not issued when wind

Accepted Answer

At altitude is within 1500ft of the station elevation

Question 3

ALL BL IFR Wind direction is indicated in tens of degrees (two digits) with reference to ______and wind speed is given in _________ (two digits).

Accepted Answer

True north, knots

Question 4

BL IFR What are wind direction, speed, and temperature (relative to ISA) Flying ALB at FL 270?

Accepted Answer

265° true at 97 knots; ISA +4°C.

Question 5

BL. Wind and temperature aloft forecast at FL 390 to be 300° at 200 knots; temperature -54°C. How would this data be encoded in the FB?

Accepted Answer

809954 or 265° true at 97 knots; ISA +4°C.

Question 6

BL. Wind and temperature aloft forecast at FL 390 to be 300° at 200 knots; temperature -54°C. How would this data be encoded in the FB?

Accepted Answer

9900 and less than 5KTS

Question 7

What wind is forecast for STL at 12,000 feet?

Accepted Answer

230 true at 39kts at -4 degree C

Question 8

FC5 What wind direction and speed is represented by the entry 9900+00 for 9,000 feet, on an Winds and Temperatures Aloft Forecast (FB)?

Accepted Answer

Light and variable ; less than 5 knots

Question 9

FC 5. Decode the excerpt from the wind and temperature aloft forecast (FB) for OKC at 39,000 feet

Accepted Answer

Wind 330 at 105 kts, temperature -58C

Question 10

Shading on a Constant Pressure Analysis Chart indicates

Accepted Answer

Wind Speed 70 kts to 110 kts

Question 11

BL From which of the following can the observed temperature, wind, and temperature/ dewpoint spread be determined at a specified altitude?

Accepted Answer

Constant pressure analysis charts

Question 12

BL IFR 8 Which is incorrect for Low-Level Significant Weather Prognostic Charts?

Accepted Answer

Forecast to exist at a specific valid time shown on the chart

Question 13

The right panel of the Significant Weather Prognostic Chart provides a forecast of selected aviation weather hazards up to FL240 until what time?

Accepted Answer

March 18th at 1800 (24hrs after the valid time)

Question 14

The next issuance of the 12-hour Significant Weather Prognostic Chart will become valid at

Accepted Answer

0000Z

Question 15

FC 5. What weather phenomenon is implied within an area enclosed by small scalloped lines on a high level significant weather prognostic charts?

Accepted Answer

CU clouds, icing, and moderate or greater TB

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