Weather Footstomps!!!! Flashcards
(18 cards)
What is the temp for icing?
0 to -20* C
What type of clouds usually cause clear icing?
Cumulus, at 0 to -10*C
What is condensation nuclei?
Dust particles, pollen, salt spray. Something that water vapor attaches itself to.
Define moderate icing
Icing when the rate of accumulation is potentially hazardous even for short encounters. The use of de-icing/anti ice equipment, or diversion, is necessary
In an occluded front, where can you expect the worst weather?
300 miles north or 100 miles south
What do cold fronts give us?
Thunderstorms, reduced visibility, and cloudiness
If you are flying and your pitot-static system ices up, what is affected?
Indicated airspeed, VSI, and altimeter
What is prevailing visibility?
The greatest horizontal visibility equaled or exceeded throughout over half the horizon circle. Over half or >180* of visibility.
Sky coverage is reported in ________, and includes coverage at the _________ _________ ________ + additional coverage present at all successively ________ cloud layers.
Eighths // lowest cloud layer // higher
What does “BKN” mean?
5/8 - 7/8 sky coverage… “my broken ‘57 Chevy”
A ceiling is when there is ________ or more of sky coverage and consist of BKN, ______, or VV (vertical visibility)
5/8 // SCT
What’s the best way to get around a storm?
Circumnavigate it
What should you use a weather radar for?
AVOIDING STORMS, not penetrating them
Why do METARs exist?
Used to communicate latest observed weather to meteorologists and aircrews
How often are METARs issued?
Every hour (55-59 minutes), unless there is a SPECI
What does CIG mean on a METAR?
Decipher this: CIG 009V011
Ceiling // Ceiling is variable between 900 and 1100’ AGL
What is the temp dew spread: 29/03
26 degrees
What is the standard day temperature and altimeter setting?
15C or 59F // 29.92 inHg or 1013mb
