A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

 
C

C - Center (runway indentification) or Degrees Celcius (Centigrade)
CA -   Cloud-Air Lightning or California
CAA - Cold Air Advection
CADAS -   Centralized Automated Data Acquisition System
CAPE -   Convective Available Potential Energy
CAPPI -   Constant Altitude PPI.
CARIB - Caribbean
CASCDS - Cascades
CAT - Category or Clear Air Turbulence
CAVOK - Visibility, cloud and present weather better than prescribed values or conditions
CAVU - Ceiling and visibility unlimited
Cb or CB -   Cumulonimbus Cloud
CBMAM -   Cumulonimbus Mammatus
CBS - Cumulonimbi
Cc or CC -   Cirrocumulus
CC -   Cloud-Cloud Lightning
CCA - (or CCB, CCC ... etc, in sequence) Corrected meteorological message (message type designator)
CCL -   Convective Condensation Level
CCLDS - Clear of clouds
CCLKWS - Counter-clockwise
CCSL -   Cirrocumulus Standing Leticular
CD -   Climatological Data
CDA -   NOAA or NESDIS Command and Data Acquisition (CDA) Station
CDC -   Climate Diagnostics Center
CDFNT - Cold front
CDFNTL - Cold frontal
CEM -   Civil Emergency Message
CFP - Cold front passage
CFS -   Cubic Feet per Second
CG -   Cloud-Ground Lightning
CHC - Chance
CHCS - Chances
CHG - Change
CHGD - Changed
CHGG - Changing
CHGS - Changes
CHSPK - Chesepeake
Ci or CI -   Cirrus
CIG - Ceiling
CIGS - Ceilings
CIN -   Convective Inhibition
CISK -   Conditional Instability of the Second Kind.
CLA - Clear type of ice formation
CLD - Cloud
CLDNS - Cloudiness
CLDS - Clouds
CLEGLFGLS -   Great Lakes Marine Synopsis
CLEGLOCLE -   Great Lakes Storm Outlook
CLEGLSCLE -   Great Lakes Storm Summary
CLEICEFBO -   Great Lakes Freeze-Up Outlook or Great Lakes Ice Outlook for the Opening of Navigation
CLEICEIO -   Great Lakes 5-Day Ice Outlook
CLKWS - Clockwise
CLR - Clear
CLRG - Clearing
CLRS - Clears
CM - Centimeter
CMPLX - Complex
CNCL - Cancel
CNCLD - Cancelled
CNCLG - Cancelling
CNCLS - Cancels
CNDN - Canadian
CNFDC - Confidence
CNIF -   Calibration Network Information Files
CNL - Cancel or cancelled
CNTR - Center
CNTRD - Centered
CNTRL - Central
CNTRLN - Centerline
CNTRS - Centers
CNTY - County
CNTYS - Counties
CNVG - Converge
CNVGG - Converging
CNVGNC - Convergence
CNVTN - Convection
CNVTV - Convective
CNVTVLY - Convectively
CO - Colorado
COE -   An acronym for Corps of Engineers
COM - Communications
COMPAR - Compare
COMPARD - Compared
COMPARG - Comparing
COMPARS - Compares
COND - Conditions
CONS - Continuous
CONSHELF -   Continental Shelf
CONT - Continue(s) or continued
CONTD - Continued
CONTDVD - Continental Divide
CONTG - Continuing
CONTLY - Continually
CONTRAILS - Condensation Trails
CONTS - Continues
CONUS -   Continental United States.
COOR - Co-ordinate or co-ordination
COORD - Coordinate
COR - Correction
COT - At the coast
COV - Cover or covered or covering
CPBL - Capable
CPC -   Climate Prediction Center
CPHC -   Central Pacific Hurricane Center
CR -   Composite Reflectivity
CRC -   Composite Reflectivity Contour
CRC - Circle
CRCLC - Circulate
CRCLN - Circulation
CRNR - Corner
CRNRS - Corners
CRP -   Critical Rainfall Probability
CRS - Course
Cs or CS - Cirrostratus
CS -   Combined Shear
CSC -   Combined Shear Contour
CSDR - Consider
CSDRBL - Considerable
CSI -   Conditional Symmetric Instability
CST - Coast
CSTL - Coastal
CT - Connecticut or Cross Totals
CTGY - Category
CTSKLS - Catskills
Cu or CU -   Cumulus.
CUF - Cumuliform
CUFRA - Cumulus Fractus
CVR - Cover
CVRD - Covered
CVRG - Covering
CVRS - Covers
CW -   Cloud-Water Lightning or Continuous Wave
CWA -   County Warning Area
CWF -   Coastal Marine Forecasts
CYC - Cyclonic
CYCLGN - Cyclogenesis  


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