METARs

Question 1

Gusts

Answer 1

10kts or more above mean speed

Question 2

Var

Answer 2

60 degrees or more variation (greater than 3kts)

Question 3

0000=

Answer 3

Less than 50m

Question 4

Give direction if less than 1500m in one direction and greater than 5000m

Answer 4

True

Question 5

What are he ranges if RVR

Answer 5

50-1500m

Question 6

P=

Answer 6

greater than can be assessed

Question 7

M=

Answer 7

Less than can be assessed

Question 8

U=

Answer 8

Values up

Question 9

D=

Answer 9

Values down

Question 10

N=

Answer 10

No trend

Question 11

4 groups of clouds on a METAR true or False?

Answer 11

True

Question 12

1st group lowest cloud of any amount

2nd group next highest more than 2 oktas

3rd group next highest more than 4 oktas

4th group any CB/TCU if not already present

Answer 12

True

Question 13

What does CAVOK mean?

Answer 13

Vis greater than 10km
No cloud below 5,000ft(or min sector altitude).
No significant weather
No CB/TCU anywhere

Question 14

TAFs?

Answer 14

Prepared every 3 hours

Valid for 9 hours

24 or 30 hour TAFs also avbl

Question 15

SIGMETs

Answer 15

Met office prepare and sends to ACC n FIC

Valid for 4 hours

500nm ahead/2 hours entourage for aircraft