Met REPORTs/ Forecasts

Question 1

METAR

Answer 1

Issued Every hour with speci when weather is observed

Question 2

Trend

Answer 2

Last 2 hours [landing forecast] In Aucland Christchurch Wellington and Royal Air Force bases

Question 3

Tempo

Answer 3

For fluctuations in weather that last no more than one hour than 1 hour in each instance

Question 4

Validity of TREND, METAR, AUTO METAR

Answer 4

2 hours for TREND, landing Forecast, METAR issued every hour but no validity period, AUTO METAR every 30min

Question 5

TAF Validity and Frequency of issue

Answer 5

Valid 24hr and Issued every 6hrs

Question 6

ARFOR (Area Forecast) frequency

Answer 6

Twice daily, 0530 and 1030

Question 7

SIGMET validity period (non VA/TC)

Answer 7

4 hours, VA/TC 6 hours

Question 8

SIGMET validity for Volcanic Ash or Tropical Cyclone

Answer 8

6 hours and reviewed after 3 hours

Question 9

Pressure Change for Cold Front Passage

Answer 9

Before; Decrease. At: Arrest of fall. After: Increase

Question 10

Pressure change for Warm Front

Answer 10

Before Decrease. At Arrest in Fall. After Steady or slight Increase

Question 11

Temperature change for cold front

Answer 11

Steady warm before. AT- Abrupt decrease. After- steady cold

Question 12

Temperature change for warm front

Answer 12

Before- Steady or slightly decreased due to precipitation. At- Increase in temperature. After- Little change

Question 13

Wind Change for Cold Front

Answer 13

Before- Slight veering. At- Sudden backing with Squall. After- Steady and Decreasing

Question 14

Wind Change for Warm Front

Answer 14

Before- Veering and increase in strength. AT- Backing. AFTER- Steady direction and speed.

Question 15

MI abbreviation

Answer 15

Shallow (think MI llimetre

Question 16

PR Abbreviation

Answer 16

Partial (covering part of the aerodrome)

Question 17

DR Abbreviation

Answer 17

Low Drifting

Question 18

SG Abbreviation

Answer 18

Snow Grains

Question 19

IC Abbreviation

Answer 19

Ice crystals (diamond dust)

Question 20

//

Answer 20

No weather detected (rain or showers)

Question 21

CAVOK

Answer 21

Visibility greater than 10km and no cloud below 5000ft or MPCA, with no significant CB, TCU and no precipitation.

Question 22

NCD meaning

Answer 22

No cloud detected overhead the station

Question 23

9 slashes /////////

Answer 23

Faulty sensor

Question 24

SKC

Answer 24

Sky clear (CAVOK AND NSC not used because AWS does not scan the entire sky