A METAR reads in part: 3SM BR. What does this mean?
- Clouds at 3,000 ft with broken coverage
- Visibility 3 statute miles in light rain
- Visibility 3 nautical miles in haze
- Visibility 3 statute miles in mist
Show the answer
D. Visibility 3 statute miles in mist
SM is visibility in statute miles and BR is mist. Rain is RA and haze is HZ, while broken cloud is written BKN followed by a height.
Reference: AIM 7-1-28
A METAR reports the sky as FEW009 SCT020 BKN035 OVC050. What is the ceiling?
- 900 ft AGL
- 2,000 ft AGL
- 3,500 ft AGL
- 5,000 ft AGL
Show the answer
C. 3,500 ft AGL
The ceiling is the lowest layer reported as broken or overcast (or a vertical visibility). Few and scattered layers do not make a ceiling, so it is the BKN035 layer at 3,500 ft AGL.
Reference: AIM 7-1-28; FAA-H-8083-28
Which METAR temperature and dew point group, taken at dusk with calm wind, most suggests fog will form overnight?
- 30/15
- 24/08
- 14/13
- 14/M02
Show the answer
C. 14/13
The group gives temperature and dew point in degrees Celsius. A spread of only 1 degree means the air is nearly saturated, and overnight cooling can bring it to the dew point. M means minus, giving a wide spread.
Reference: FAA-H-8083-28, Fog; AIM 7-1-28