Meteorology
When do clouds form?
When the relative humidty of a parcel of air reaches 100%
The cloud that is most "feared" - pilots avoid it at all costs
Comulunimbus
The amount of oktas to have a Ceiling
What is 5
CB
Cumulonimbus
Measurement of cloud base with what instrument?
Ceilometer
Form of cloud above FL200?
Cirriform
The cloud base is what?
Lowest observed start of cloud
BKN - how many oktas?
5-7
Which level of cloud have most interest to ATCOs?
Low level
Cumulonimbus can cause, hail and tornadoes
Yes
How many decimals indicate base and ceiling on a METAR
what is 3
NSC
No significant clouds
Orograhic uplift
When air is forced to rise over elevation
Low clouds develop under ....ft?
6500
Ceiling abbreviations
OVC and BKN
Reports from pilots about weather
PIREPs
The three high clouds
cirrus, cirrocumulus and cirrostratus
SCT124 - Ceiling or not?
Ceiling