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Flashcards in Aviation Forecasts Deck (103)
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1

What is an ARFORS?

Area weather forecast

2

What height do ARFORS go up to?

FL200

3

Where are ARFORS available from?

ATC, FS, and Met office

4

The conditions in ARFORS have a probability of what?

50% or greater

5

Format of ARFORS

- Issue time in UTC
- Period of validity (DDHHMM in UTC) and the ARFOR area number
- Wind velocity in standard heights (Wind in True)
- Temperature at standard heights at and above 10,000ft is given with the wind velocity
- Cloud (AMSL)
- Weather situation
- Visibility
- Freezing level
- Airframe ice details
- Turbulence
- Special location weather forecasts

6

How much is Australia ahead of UTC?

8- 10 hours depending on the region

7

Australian Eastern Time?

UTC +10

8

Period of validity of ARFOR?

Usually, 12 hours but can vary

9

How is validity expressed?

Two six-figure date/ time groups

10

Explain six figure date/time group...

DDHHMM
D= DAY
H= HOUR
M= MINUTES

11

What does this mean?
262300 TO 271100 AREA 21

Area 21
Valid from: 2300Z 26th Day of month
Valid till: 1100Z on the 27th Day of the month

12

What is wind direction rounded to?

Nearest 10 degrees

13

Are forecasts in True or Magnetic?

True

14

What is wind speed rounded to?

Nearest 5 knots

15

What are the standard heights?

- 2,000ft
- 5,000ft
- 7,000ft
- 10,000ft
- FL140
- FL185

16

For winds not at standard heights?

Interpolate or read the nearest height

17

What heights are temperatures forecasted at?

- 10,000ft
- FL140
- FL185

18

How are temperatures written?

PSXX- Positive
MSXX- Minus
ZERO- 0 degrees

19

What is the cloud height above?

AMSL

20

Cloud types abbreviated....

- CI: CIRRUS
- CS: CIRROSTRATUS
- CC: CIRROCUMULUS
- AS: ALTOSTRATUS
- AC: ALTOCUMULUS
- NS: NIMBOSTRATUS
- CB: CUMLINONIMNUS
- CU: CUMULUS
- SC: STRATOCUMULUS
- ST: STRATUS

21

Eights of cloud are referred to as..

Oktas

22

Cloud amount abbreviations...

- SKC: SKY CLEAR 0
- FEW: FEW 1-2 OKTAS
- SCT: SCATTERED 3- 4 OKTAS
- BKN: BROKEN 5- 7 OKTAS
- OVC: OVERCAST 8 OKTAS

23

Cumulonimbus cloud amount abbreviations...

- ISOL: ISOLATED (INDIVIDUAL CB)
- OCNL: OCCASIONAL ( WELL SEPARATED)
- FRQ: FREQUENT (LITTLE OR NO SEPARATION)
- EMBD: EMBEDDED IN OTHER CLOUD

24

What is BC?

Patches

25

What is BL?

Blowing

26

What is DR?

Drifting

27

What is FZ?

Freezing

28

What is MI?

Shallow

29

What is SH?

Showers

30

What is TS?

Thunderstorms