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B-4
Revision 2 Nov/2002
KMD 550/850 FIS Addendum
Appendix B
CAS
Committee for
Aviation Services
CASCDS Cascades
CAT
Clear air turbulence
CAVOK
Clear sky, unlimited
visibility
CB Cumulonimbus
CBMAM
Cumulonimbus
Mammatus clouds
CC Cirrocumulus
CCCC
Generic WMO
format code group
for a four-letter loca-
tion identifier
CCLDS
Clear of clouds
CCLKWS Counterclockwise
CCSL Cirrocumulus
standing lenticular
CCx
Code used in the
WMO abbreviated
heading to indicate
a corrected fore-
cast, where x is the
letter A through X
CDFNT Cold
front
CFP
Cold front passage
CG
Cloud to ground
(lightning)
CHC Chance
CHCS Chances
CHG Change
CHGD Changed
CHGG Changing
CHGS Changes
CHI
Cloud-Height
indicator
CHINO
Sky condition at
secondary location
not available
CHOP
Turbulence type
characterized by
rapid, rhythmic jolts
CHSPK Chesapeake
CI Cirrus
CIG Ceiling
CIGS Ceilings
CLD Cloud
CLDNS Cloudiness
CLDS Clouds
CLKWS Clockwise
CLR Clear
CLRG Clearing
CLRS Clears
CMPLX Complex
CNCL Cancel
CNCLD Canceled
CNCLG Canceling
CNCLS Cancels
CNDN Canadian
CNTR Center
CNTRD Centered
CNTRL Central
CNTY County
CNTYS Counties
CNVG Converge
CNVGG Converging
CNVGNC Convergence
CNVTN Convection
CNVTV Convective
Appendix B R2 11/21/02 5:32 PM Page 4