METARs
TAFs
What is that symbol?
Validity Periods and Time
What would you do?
100

1. METAR: METAR KLAX 201653Z 24005KT 10SM FEW020 18/12 A3005

Question: Decode the wind in this METAR.

What is wind from 240 degrees at 5 knots?

100

 TAF: TAF KATL 231130Z 2312/2418 30005KT P6SM SKC

Question: What are the forecast winds at the beginning of the period?

Answer: What is 300 degrees at 5 knots?

100

 What does the symbol “FG” represent?

Answer: What is fog?

100

In a METAR timestamp like 231953Z, what does 23 represent?


Answer: What is the 23rd day of the month?

100

KJAX 221850Z 31022G32KT 4SM HZ SCT020

Would strong gusts be a concern for landing?

What is yes, because gusts over 30 knots may exceed limits or cause instability?

200

METAR KDAL 191751Z 18012KT 6SM HZ SCT030 30/20 A2998

Question: What is the reported visibility?

What is 6 statute miles?

200

TAF: TAF KSFO 241140Z 2412/2512 24015KT 5SM BR SCT008

Question: What does BR indicate?

Answer: What is mist?

200

What does “+” in front of a weather code mean (example: +RA)?

Answer: What is heavy intensity?

200

In a TAF period shown as “2412/2518,” what does this time span mean?

Answer: What is valid from 1200Z on the 24th to 1800Z on the 25th?

200

TAF KHSV 231720Z 2318/2418 20012KT P6SM BKN025 TEMPO 2322/2402 2SM TSRA
Is a VFR flight advisable during the TEMPO period?

Answer: What is no, because thunderstorms and 2SM visibility fall below VFR conditions?

300

METAR KDEN 211855Z 34020G30KT 3SM -SN BKN015 M02/M05 A2972

Question: What is the temperature and dewpoint?

Answer: What is minus 2°C and minus 5°C?

300

TAF:

TAF KSEA 251720Z 2518/2618 TEMPO 2518/2522 3SM -RA BKN015
Question: What does “TEMPO 2518/2522” mean?

What is temporarily expected conditions between 1800Z and 2200Z on the 25th?

300

What does “BR” stand for in aviation weather codes?

Answer: What is mist?

300

How long does a TEMPO group typically last?

Answer: What is less than one hour at a time, but no more than half the period indicated?

300

KRNO 241955Z 03010KT 1SM SN OVC007 M03/M05
Is takeoff safe for a VFR pilot?

Answer: What is no, because visibility of 1SM and 700-foot ceilings are below VFR minimums?

400

4. METAR: METAR KORD 221951Z 02012KT 1/4SM FG OVC002 A3010

Question: What is causing the low visibility?

Answer: What is fog?

400

TAF:

TAF KPHX 261720Z 2618/2718 FM262000 19012KT P6SM SCT080 BKN120
Question: What does FM262000 indicate?

What is a rapid change beginning at 2000Z on the 26th?

400

In cloud codes, what does “CB” indicate?

Answer: What is cumulonimbus?

400

What does the change group BECMG mean regarding timing?

Answer: What is gradual change expected within the listed time window?

400

TAF KMSP 251740Z 2518/2618 FM252300 02018G26KT 3SM -SN OVC020
What operational concern does the forecasted wind present?

Answer: What is strong and gusty crosswinds?

500

METAR:

METAR KMIA 231953Z 09018G26KT 2SM +RA BR BKN015 OVC030CB WS015/11045KT
Question: Identify the major flight hazard reported.

Answer: What is low-level wind shear at 1,500 feet?

500

TAF KORD 281720Z 2818/2924 PROB30 2900/2904 1SM TSRA BKN009CB
Question: What does “PROB30 2900/2904 1SM TSRA” mean?

Answer: What is a 30% probability of 1 mile visibility with thunderstorms and rain from 0000Z to 0400Z on the 29th?

500

What does “VV003” indicate?

What is vertical visibility of 300 feet?

500

In a TAF, what is the maximum validity period in the U.S. unless otherwise noted?

Answer: What is 24 to 30 hours?

500

KMCI 261853Z 35030KT 1/2SM +SN BLSN OVC005
What two hazards make this a no-go situation for most operations?

Answer: What is heavy snow and extremely low visibility?

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