Met

Question 1

When are GRAFORs issued?

Answer 1

1100 and 2100

Question 2

When is each GRAFOR valid for?

Answer 2

3 hours either side of issue time

Question 3

DZ

Answer 3

Drizzle

Question 4

GS

Answer 4

Small hail (less than 5mm)

Question 5

GR

Answer 5

Large Hail (larger than 5mm)

Question 6

SN

Answer 6

Snow

Question 7

SG

Answer 7

Snow Grains

Question 8

DU

Answer 8

Dust

Question 9

SA

Answer 9

Sand

Question 10

SQ

Answer 10

Squall

Question 11

PO

Answer 11

Dust/Sand Whirls

Question 12

FC

Answer 12

Funnel Cloud

Question 13

SS

Answer 13

Sandstorm

Question 14

DS

Answer 14

Dust Storm

Question 15

How far out does a METAR go?

Answer 15

8km from the ARP
8-16km may be given, indicates by the term VC (vicinity)

Question 16

When are the SIGWIX charts issued?

Answer 16

0200, 1400, and 2000

Question 17

When are sigmets issued?

Answer 17

As required

Question 18

How long are TAFs valid for?

Answer 18

18 hours

Question 19

What area does a TAF cover?

Answer 19

8km, but 16km for cloud, from the ARP

Question 20

When will the varying between (V) symbol be given in a METAR?

Answer 20

When the wind direction varies by 60 degrees or more

Question 21

When is CAVOK used?

Answer 21

In TREND/TAF for NZAA, NZWN, NZCH

Question 22

What are the CAVOK conditions?

Answer 22

Visibility 10km or greater
No cloud base below:
• 5000ft AA
• 6500ft WN
• 7000ft CH
No TCU/CBs at any height
No significant weather

Question 23

What does NCD mean?

Answer 23

No cloud detected below 10,000ft (AA,WN,CH)

At any level for domestic aerodromes

Question 24

PL

Answer 24

Ice pellets

Question 25

When is a SPECI issued?

Answer 25

Any time there is a significant change to weather

Question 26

MI

Answer 26

Shallow

Question 27

TREND

Answer 27

Forecast at the end of a METAR for the next two hours. Supersedes the TAF

Question 28

TEMPO

Answer 28

Temporary changes in met conditions lasting less than 1hr