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Question Bank
Questions for SIGMET
Answer the following questions
Test Mode
Training Mode
1. What does the abbreviation “nosig” mean?
No report received
No weather related problems
Not signed by the meteorologist
No significant changes
2. At a weather station, at 0600 UTC, the air temperature and dew point are respectively: T = - 0,5°C,Td = -1,5°C. In the METAR message transmitted by this station, the “temperature group” will be:
M01/M02
M01/M01
M00/M01
00/M01
3. SIGMET information is issued as a warning for significant weather to
VFR operations only
all aircraft
heavy aircraft only
light aircraft only
4. Which of the following weather reports could be, in accordance with the regulations, abbreviated to “CAVOK”? (MSA above ground : LSZB 10000 FT, LSZH 8000 FT, LSGG 12000 FT, LFSB 6000 FT)
LSGG 22006KT 9999 BKN090 17/15 Q1008 RERA NOSIG =
LFSB 24008KT 9999 SCT050 18/11 Q1017 RERA NOSIG =
LSZB 28012KT 9999 OVC100 16/12 Q1012 BECMG 5000 =
LSZH VRB02KT 9000 BKN080 21/14 Q1022 NOSIG =
5. If CAVOK is reported then
no clouds are present
no low drifting snow is present
low level windshear has not been reported
any CB’s have a base above 5000 FT
6. Look at this TAF for Zurich Airport TAF LSZH 211322 22018G35KT 9999 SCT012 BKN030 BECMG 1315 25025G45KT TEMPO 1720 4000 +SHRA BKN025TCU BECMG 2022 25015KT T1815Z T1618Z = Which of these statements best describes the weather most likely to be experienced at 1500 UTC?
Meteorological visibility 10 kilometres or more, main cloudbase 1200 feet, gusts up to 45 knots
Meteorological visibility 4000 metres, gusts up to 25 knots, temperature 18°C
Meteorological visibility 10 kilometres or more, main cloudbase 3000 feet, wind 250°, temperature 18°C
Severe rain showers, meteorological visibility 4000 metres, temperature 15°C, gusts up to 35 knots
7. In the TAF for Dehli (India), during the summer, for the time of your landing you note: TEMPO TS. What is the maximum time this deterioration in weather can last in anyone instance ?
120 minutes
20 minutes
60 minutes
10 minutes
8. Which statement is true?
QNH can be 1013.25 only for a station at MSL
QNH can be only lower than 1013.25 hPa
QNH can not be 1013.25 hPa
QNH is lower than 1013.25 hPa at any time
9. Which of these four METAR reports suggests that rain is most likely in the next few hours?
16002KT 0100 FG SCT300 06/06 Q1022 BECMG 1000 =
34004KT 9999 SCT040 SCT100 m05/m08 Q1014 NOSIG =
05016G33KT 8000 OVC015 08/06 Q1028 NOSIG =
23015KT 8000 BKN030 OVC070 17/14 Q1009 BECMG 4000 =
10. Refer to the TAF for Amsterdam airport. FCNL31 281500 EHAM 281601 14010KT 6000 -RA SCT025 BECMG 1618 12015G25KT SCT008 BKN013 TEMPO 1823 3000 RA BKN005 OVC010 BECMG 2301 25020KT 8000 NSW BKN020 = Flight from Bordeaux to Amsterdam, ETA 2100 UTC. What lowest cloud base is forecast for arrival at Amsterdam?
800 FT
500 FT
500 m
250 FT
11. Refer to the TAF for Bordeaux airport. FCFR31 281400 LFBD 1524 26015KT 9999 SHRA BKN020 TEMPO 1620 26020G30KT 8000 +SHRA BKN015CB PROB30 TSRA = Flight Lisbon to Bordeaux, ETA 1800 UTC. At ETA Bordeaux what is the lowest quoted visibility forecast?
8 km
8 NM
10 or more km
10 NM
12. Which of these four METAR reports suggests that a thunderstorm is likely in the next few hours?
1350Z 21005KT 9999 SCT040CB SCT100 26/18 Q1016 TEMPO 24018G30 TS =
1350Z 34003KT 0800 SN VV002 m02/m04 Q1014 NOSIG =
1350Z 16004KT 8000 SCT110 OVC220 02/m02 Q1008 NOSIG =
1350Z 04012KT 3000 OVC012 04/03 Q1022 BECMG 5000 =
13. In the following SIGMET message, what is the hazard forecast? LFFF SIGMET 1 VALID 310600/311100 LFPW- UIR FRANCE MOD TURB FCST BLW FL420 W of 04W MOVE E 30KT NC=
Moderate turbulence below 42 000 ft west of 4 degrees west and moving eastwards
Moderate turbulence below 42 000 ft west of 4 degrees west and moving from the east
Turbulence at 42 000 ft west of 4 degrees west and moving at 30 kts
Moderate turbulence at 42 000 ft west of 4 degrees west and moving eastwards
14. Which of the four answers is a correct interpretation of data from the following METAR ? 16003KT 0400 R14/P1500 R16/1000N FZFG VV003 M02/M02 Q1026 BECMG 2000 =
Meteorological visibility 1000 m, RVR 400 m, freezing level at 300 m, variable winds, temperature 2°C
RVR for runway 14 1500 m, meteorological visibility 400 m, QNH 1026 hPa, wind 160° at 3 kt
Meteorological visibility 400 m, RVR for runway 16 1000 m, dew point -2°C, freezing fog
RVR for runway 16 1000 m, meteorological visibility increasing in the next 2 hours to 2000 m, vertical visibility 300 m, temperature -2°C
15. Refer to the following TAF extract: BECMG 1821 2000 BKN004 PROB30 BECMG 2124 0500 FG VV001 What does the abbreviation “PROB30” mean?
Conditions will last for at least 30 minutes
Probability of 30%.
Change expected in less than 30 minutes.
The cloud ceiling should lift to 3000 FT
16. Which of the following weather reports could be, in accordance with the regulations, abbreviated to “CAVOK”?
29010KT 9999 SCT045TCU 16/12 Q1015 RESHRA NOSIG =
04012G26KT 9999 BKN030 11/07 Q1024 NOSIG =
15003KT 9999 BKN100 17/11 Q1024 NOSIG =
24009KT 6000 RA SCT010 OVC030 12/11 Q1007 TEMPO 4000 =
17. A SPECI is
a forecast for special weather phenomena
an aviation selected special weather report
a warning for special weather phenomena
an aviation routine weather report
18. Refer to the TAF for Bordeaux airport. FCFR31 281400 LFBD 1524 26015KT 9999 SHRA BKN020 TEMPO 1620 26020G30KT 8000 +SHRA BKN015CB PROB30 TSRA = Flight Lisbon to Bordeaux, ETA 1800 UTC. What type of precipitation is forecast on the approach to Bordeaux ?
Continuous moderate rain
Moderate snow showers
Light drizzle and fog
Heavy rain showers
19. What is the expected change in the weather intensity indicated by this SIGMET? EGTT SIGMET 1 VALID 310730/311130 EGRR LONDON FIR ISOL CB FCST TOPS FL370 ROUTES W OF W00400 NC=
Dissipating
No change
Weakening
Strengthening
20. What does the term METAR signify?
A METAR is a landing forecast added to the actual weather report as a brief prognostic report
A METAR signifies the actual weather report at an aerodrome and is generally issued in half-hourly intervals
A METAR is a flight forecast, issued by the meteorological station several times daily.
A METAR is a warning of dangerous meteorological conditions within a FIR.
21. In which weather report would you expect to find information about icing conditions on the runway?
METAR
TAF
GAFOR
SIGMET
22. Refer to the following TAF extract: BECMG 1821 2000 BKN004 PROB30 BECMG 2124 0500 FG VV001 What visibility is forecast for 2400 UTC?
Between 0 m and 1000 m.
2000 m.
Between 500 m and 2000 m.
500 m.
23. Refer to the following TAF for Zurich. LSZH 261019 20018G30KT 9999 -RA SCT050 BKN080 TEMPO 23012KT 6000 -DZ BKN015 BKN030 BECMG 1518 23020G35KT 4000 RA OVC010= The lowest visibility forecast at ETA Zurich 1430 UTC is
10 km.
6 km.
6 NM.
4 km.
24. Which of the following weather reports could be, in accordance with the regulations, abbreviated to “CAVOK”?
34004KT 7000 MIFG SCT260 09/08 Q1029 BECMG 1600 =
26012KT 8000 SHRA BKN025 16/12 Q1018 NOSIG =
00000KT 0100 FG VV001 11/11 Q1025 BECMG 0500 =
27019G37KT 9999 BKN050 18/14 Q1016 NOSIG =
25. Which of the following statements is an interpretation of the METAR? 25020G38KT 1200 +TSGR BKN006 BKN015CB 23/18 Q1016 BECMG NSW =
Gusts of 38 knots, thunderstorm with heavy hail, dew point 18°C
Mean wind speed 20-38 knots, meteorological visibility 1200 metres, temperature 23°C
Broken, cloudbase 600 feet and 1500 feet, temperature 18°C
Wind 250°, thunderstorm with moderate hail, QNH 1016 hPa
26. What does the term SIGMET signify?
A SIGMET is a flight forecast, issued by the meteorological station several times daily
A SIGMET is an actual weather report at an aerodrome and is generally issued at halfhourly intervals
A SIGMET is a brief landing forecast added to the actual weather report
A SIGMET is a warning of dangerous meteorological conditions
27. The following weather report EDDM 241322 VRB03KT 1500 HZ OVC004 BECMG 1517 00000KT 0500 FG VV002 TEMPO 2022 0400 FG VV001 is a
24 hour TAF.
METAR.
SPECI.
9 hour TAF.
28. Refer to TAF below. EGBB 261812 28015G25KT 9999 SCT025 TEMPO 1822 29018G35KT 5000 SHRASN BKN010CB PROB30 TEMPO 1821 1500 TSGR BKN008CB BECMG 2124 26010KT From the TAF above you can assume that visibility at 2055Z in Birmingham (EGBB) will be:
a minimum of 1,5 km and a maximum of 5 km
more than 10 km
not less than 1,5 km but could be in excess of 10 km
a maximum 5 km
29. Refer to the following TAF extract: BECMG 1821 2000 BKN004 PROB30 BECMG 2124 0500 FG VV001 What does the abbreviation “VV001” mean?
Vertical visibility 100 m
Vertical visibility 100 FT
RVR less than 100 m
RVR greater than 100 m
30. Marseille Information gives you the following meteorological information for Ajaccio and Calvi for 1600 UTC : Ajaccio: wind 360°/2 kt, visibility 2000 m, rain, BKN stratocumulus at 1000 FT, OVC altostratus at 8000 FT, QNH 1023 hPa. Calvi: wind 040°/2 kt, visibility 3000 m, mist, FEW stratus at 500 FT, SCT stratocumulus at 2000 FT, OVC altostratus at 9000 FT, QNH 1023 hPa. The ceilings (more than 4 oktas) are therefore:
8000 FT at Ajaccio and 9000 FT at Calvi
1000 FT at Ajaccio and 2000 FT at Calvi
1000 FT at Ajaccio and 500 FT at Calvi
1000 FT at Ajaccio and 9000 FT at Calvi
31. How would a severe mountain wave be coded in a SIGMET message?
+ MTW
SEV MNTW
SEVERE MNTW
SEV MTW
32. Which of the following weather reports could be, in accordance with the regulations, abbreviated to “CAVOK”? (MSA above ground: LSZB 10000 FT, LSZH 8000 FT, LSGG 12000 FT, LFSB 6000 FT)
LSZB 30004KT 9999 SCT090 10/09 Q1006 NOSIG =
LSZH 26024G52KT 9999 BKN060 17/14 Q1012 RETS TEMPO 5000 TSRA =
LSGG 22003KT 9999 SCT120 BKN280 09/08 Q1026 BECMG 5000 =
LFSB 00000KT 9000 SCT080 22/15 Q1022 NOSIG =
33. Refer to the TAF for Amsterdam airport: FCNL31 281500 EHAM 281601 14010KT 6000 -RA SCT025 BECMG 1618 12015G25KT SCT008 BKN013 TEMPO 1823 3000 RA BKN005 OVC010 BECMG 2301 25020KT 8000 NSW BKN020 = Flight from Bordeaux to Amsterdam, ETA 2100 UTC. What is the minimum visibility forecast for ETA Amsterdam ?
6 km
3 km
5 NM
5 km
34. Refer to the following TAF extract: BECMG 1821 2000 BKN004 PROB30 BECMG 2124 0500 FG VV001 What does the abbreviation “BKN004” mean?
5 - 7 oktas, ceiling 400 FT.
1 - 4 oktas, ceiling 400 m.
4 - 8 oktas, ceiling 400 m.
1 - 4 oktas, ceiling 400 FT
35. Which of the following statements is an interpretation of the SIGMET? SIGMET VALID 121420/121820 embd ts obs and fcst in w part of athinai fir / mov e / intst nc =
The thunderstorms in the Athens FIR are increasing in intensity, but are stationary above the western part of the Athens FIR
Thunderstorms have formed in the eastern part of the Athens FIR and are slowly moving west
Thunderstorms must be expected in the western part of the Athens FIR. The thunderstorm zone is moving east. Intensity is constant
Athens Airport is closed due to thunderstorms. The thunderstorm zone should be east of Athens by 1820 UTC
36. The RVR, as reported in a METAR, is always the
value representative of the touchdown zone
average value of the A-, B- and C-position
highest value of the A-, B- and C-position
lowest value of the A-, B- and C-position
37. Compare the following TAF and VOLMET reports for Nice: TAF 240716 VRB02KT CAVOK = 0920Z 13012KT 8000 SCT040CB BKN100 20/18 Q1015 TEMPO TS = What can be concluded from the differences between the two reports ?
That the weather in Nice after 0920 is also likely to be as predicted in the TAF
That the weather at Nice is clearly more volatile than the TAF could have predicted earlier in the morning
That the VOLMET speaker has got his locations mixed up, because there is no way the latest VOLMET report could be so different from the TAF
That the weather conditions at 0920 were actually predicted in the TAF
38. What do the first four letters of the SIGMET message identify?
The issue number
The name of the air traffic services controlling unit
The validity time
The ICAO identifier for the relevant airport
39. In which of the following 1850 UTC METAR reports, is the probability of fog formation, in the coming night, the highest?
22004KT 6000 -RA SCT012 OVC030 17/14 Q1009 NOSIG =
00000KT 9999 SCT300 21/01 Q1032 NOSIG =
VRB02KT 2500 SCT120 14/M08 Q1035 NOSIG =
VRB01KT 8000 SCT250 11/10 Q1028 BECMG 3000 =
40. The cloud base, reported in the METAR, is the height above
mean sea level
the pressure altitude of the observation station at the time of observation
the highest terrain within a radius of 8 km from the observation station
airfield level
41. Within a short interval, several flight crews report that they have experienced strong clear air turbulence in certain airspace. What is the consequence of these reports?
The competent aviation weather office will issue a SPECI
The competent aviation weather office will issue a storm warning
The competent aviation weather office will issue a SIGMET
The airspace in question, will be temporarily closed
42. In which of the following METAR reports, is the probability of fog formation in the coming night the highest?
1850Z 25010KT 4000 RA BKN012 OVC030 12/10 Q1006 TEMPO 1500 =
1850Z 06018G30KT 5000 OVC010 04/01 Q1024 NOSIG =
1850Z 15003KT 6000 SCT120 05/04 Q1032 BECMG 1600 =
1850Z 21003KT 8000 SCT250 12/m08 Q1028 NOSIG =
43. In which of the following circumstances is a SIGMET issued ?
Clear ice on the runways of an aerodrome.
Marked mountain waves.
Fog or a thunderstorm at an aerodrome.
A sudden change in the weather conditions contained in the METAR.
44. Refer to the following TAF for Zurich. LSZH 061019 20018G30KT 9999 -RA SCT050 BKN080 TEMPO 23012KT 6000 -DZ BKN015 BKN030 BECMG 1518 23020G35KT 4000 RA OVC010= The lowest cloud base forecast at ETA Zurich (1200 UTC) is
5000 FT.
1500 m.
1000 FT.
1500 FT.
45. Which of the following statements is an interpretation of the METAR ? 00000KT 0200 R14/0800U R16/P1500U FZFG VV001 m03/m03 Q1022 BECMG 0800 =
Meteorological visibility 200 feet, RVR for runway 16 more than 1500 metres, vertical visibility 100 feet, fog with hoar frost
Meteorological visibility 200 metres, RVR for runway 16 1500 metres, temperature -3°C, vertical visibility 100 metres
RVR for runway 14 800 metres, vertical visibility 100 feet, calm, meteorological visibility improving to 800 metres in the next 2 hours
Meteorological visibility for runway 14 800 metres, fog with hoar frost, RVR for runway 16 more than 1500 metres
46. The wind direction in a METAR is measured relative to
magnetic north
grid north
the 0-meridian
true north
47. Runway visual range can be reported in
a METAR
a TAF
both a TAF and a METAR
a SIGMET
48. Which of the following statements is an interpretation of the SIGMET? LSAW SWITZERLAND 0307 SIGMET 2 VALID 030700/031100 LSSW mod to sev cat fcst north of alps btn fl 260 and fl 380 / stnr / intsf =
Severe turbulence observed below FL 260 north of the Alps. Pilots advised to cross this area above FL 380
Zone of moderate to severe turbulence moving towards the area north of the Alps. Intensity increasing. Pilots advised to cross this area above FL 260
Moderate to strong clear air turbulence of constant intensity to be expected north of the Alps
Moderate to severe clear air turbulence to be expected north of the Alps. Intensity increasing. Danger zone between FL260 and FL 380
49. How long from the time of observation is a TREND in a METAR valid?
1 hour.
9 hours.
2 hours.
30 minutes.
50. Appended to a METAR you get the following runway report: 01650428 What must you consider when making performance calculations?
The friction coefficient is 0.28
The braking action will be medium to good
The runway will be wet
Aquaplaning conditions
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