JEPPESEN QUESTIONS WITH
ACCURATE SOLUTIONS
What is an outlook briefing? ✅✅ANSW-If flight takes place more than 6 hours
· Used for general idea on weather.
· Shouldn't be used as primary source.
Describe the characteristics of METARs ✅✅ANSW-· Hourly, current, weather advisory for a 5
static mile area around the airport
*If there's any significant weather changes, a "SPECI" will be updated before the hour.
Describe the characteristics of TAF's ✅✅ANSW-· Updated 4 times a day, every 6 hours.
· Each report is valid for 24-32 hours.
Describe the characteristics of ATIS ✅✅ANSW-· Automation Terminal Observation System,
updated hourly, current weather advisories issued by ATC on Frequency.
Describe the characteristics of AWOS/ASOS ✅✅ANSW-· Very similar to ATIS
· AWOS (Automated weather observation system)
ASOS (Automated surface observation system)
Describe the characteristics of Airmets ✅✅ANSW-· Forecasts hazardous weather for
small/medium aircraft.
· Issued every 6 hours and is valid for the time its issued
· Types of Airmets:
* S (Sierra): Low visibility/IFR ceilings less than 1000 ft broken/overcast)
* T (Tengo): Moderate turbulence (up to 30 knot winds)
*Z (Zulu): Icing conditions
, Describe the characteristics of SIGMETs ✅✅ANSW-· Hazardous weather not related to
thunderstorms for all types of aircraft.
· Found under advisories.
· Fires, sandstorms, extreme freezing, volcanoes
· Unscheduled and valid for 4 ours.
Weather given, severe turbulence not related to thunderstorms above 30 knots
Describe the characteristics of Convective Sigmets ✅✅ANSW-· Hazardous weather related to
thunderstorms for all types of aircraft. (SEVERE) can also be found on Aviation Weather Center
(AWC)
· Issued 55 mins past the hour. And valid for 2 hours. Its pretty much issued hourly.
· Contains thunderstorms with 50+ kt winds that contain hail and thunderstorms.
· Contains embedded thunderstorms.
Heavy rain that affects 40% of a 30,000ft2region.
Describe the characteristics of Pireps ✅✅ANSW-· Pilot reports
Give most current weather giving cloud tops, bases, windshear, turbulence and icing.
Describe the characteristics of the surface analysis chart ✅✅ANSW-· Tools and surface analysis
on Aviation weather center.
· Issued every 3 hours.
· Pressure areas, front temperature, dewpoint, wind, direction and speed.
· Blue circle with lines arc the airports.
· Completely clear circle = clear
· ¼ = few clouds
· ½ = scattered
· ¾ = broken
4/4 = overacast
describe the characteristics of low level significant weather prognostic charts ✅✅ANSW-·
Forecast prog chart on Aviation weather center.
· Surface up to FL240, or 24,000 MSL