Lesson 113

Question 1

Name 5 alphanumerical products describing forecast weather conditions.

Answer 1

TAFs, FBs, FPs, FX, WA (AIRMET), WS (SIGMET),

Question 2

Name 3 alphanumerical products describing current weather conditions.

Answer 2

METAR
METAR SPECI
PIREP

Question 3

Name the 2 types of analyses.

US

Answer 3

Upper Air

Surface

Question 4

Name four different surface analyses.

Answer 4

Surface Analysis (Early and Complete)
Regional Surface Analysis
Sea Temperature

Question 5

Name five of ten prognostic charts.

Answer 5

Graphic area forecast, N. American significant weather, N. Atlantic SIG WX, 4 panel aviation package, volcanic ash, fixed time prognostic chart, winds and temperature, boundary layer wind, summer and winter severe weather, regional and global deterministic system.

Question 6

Name the parameters required to establish a TAF service.(7)

SWAMP DV

Answer 6

Sky condition 
Visibility 
Present weather and obstruction to vision
Air temperature 
Dew point temperature 
Wind speed, direction, and character 
MSL pressure

Question 7

Name the four criteria for the inclusion of LLWS in a TAF.

Vector magnitude…

Answer 7

Vector magnitude exceeding 25 KT within 500’ AGL
Vector magnitude exceeding 40KT within 1000’ AGL
Vector magnitude exceeding 50 KT within 1500’ AGL
A pilot report of loss or gain of indicated air speed of 20 KT or more within 1500’ AGL.

Question 8

Why can’t the PROB group contain a percentage of 50 percent or more?

Answer 8

50% or more requires BECMG, TEMPO, FM.

Probability less than 30% not enough to justify use of PROB group.