Weather Flashcards
Ceiling Levels
Broken into eights:
Less than 1/8- CLEAR
1/8-2/8- FEW
3/8-4/8 SCATTERED
5/8-6/8 BROKEN
7/8- 8/8 OVERCAST
AIRMET
Airmen’s Meteorological Information
-for most aircraft
-orange, blue, or purple on Foreflight app
AIRMET Orange
AIRMET Tango
-Turbulence
AIRMET Blue
AIRMET Zulu
-Icing
AIRMET Purple
AIRMET Sierra
-IFR
What is considered IFR?
Ceilings below 1000
Visibility below 3 miles
Limited visibility due to precipitation
SIGMET
-What is it?
-2 types?
Significant AIRMET
-for all aircraft
-never fly
-convective and not convective
-convective: thunderstorms, squall lines
-nonconvective: such as a volcanic eruption, sand storms
SPECI SIGMET
Special convective SIGMET
-very extreme
-never fly
What is needed for a thunderstorm to form?
-sufficient lapse rate
-lift
-moisture
WW
Weather Watch Bulletin
-as needed
-tornado watches and warnings
WH
Hurricane advisory
CWA
Center weather advisory
-given in flight as needed
PIREPS
-What are they?
-2 Types
Pilot Weather Reports: routine and urgent
-routine:
cloud cover, visibility, light ice
-urgent:
severe turbulence, low level wind shear, heavy icing
-good for 1 to 2 hours
-given by another pilot who encountered these conditions
AIREP
Aircraft Reports
-orange with triangles on Foreflight
-urgent PIREP:
red exclamation mark
FSS BRIEFINGS
1-800-wxbrief
-Standard: current conditions, TAF, NOTAMS, Hazardous
-Abbreviated: if flight gets pushed back can request abbreviated so it doesn’t take the full time
-Outlook: anything further ahead than 12 hours, very inaccurate though
True/False If an AIRMET or SIGMET occur while in flight, it is your responsibility to become informed.
False
It is your responsibility to investigate, however, any new AIRMET or SIGMET will be shared by ATC or APPROACH.
AWOS
-Automated Weather Observing System
-In depth info like precipitation indicator, dew point,
-Updated every couple minutes
ASOS
-Automated Surface Observation Station
-winds aloft, main winds, condensation, atmospheric pressure
-feeds info to TAF and METAR
TAF
-Terminal Aerodrome Forecasts
-projected weather conditions for usually 24 hours
-within 5 nautical miles from airport
-TAF codes is read the same as a METAR
-0518/0618 is 24 hour range it is good for
-FM060700 and the day and time such as 6th day at 700
-P6SM means plus 6 statute miles which means 6 or greater nautical miles
2 Main Ways to Get Weather Info for Flight
ATIS OR AWOS
METAR
Weather information
Updated every 55 minutes
SPECI
-If weather changes significantly sooner than the METAR sent every 55 minutes, a SPECI is sent out
-Wind shift by 45 degrees
-Squalls
-Tornadoes etc.
Winds and Temps Aloft Chart
-Airport identifiers
-Feet of elevation across top
-4 digit number
-in 3000 feet, don’t give temp because same as ground level
-heading of wind comes first then followed by velocity
-EX: 2022, means 200@22 knots
990012 means not from a specific direction and less than 5 knots of wind, temps are 12
METARS
Meteorological Airman’s Report
Contains data for temp, dew point, wind direction, speed, precipitation, cloud cover, heights, visibility, and barometric pressure