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Meteorology
3.11.4.3 Weather phenomenon abbreviations
Abbreviations
ABV Above
APRX Approximate
BLW Below
CLD Cloud
CNL Cancel
COT Continental
EMBD Embedded
FCST Forecast
FILL Filling
FIR Flight Information Region
FL Flight Level
FRQ Frequent
HVY Heavy
INTSF Intensify(ing)
ISOL Isolated
LYR Layered
MAR Maritime
MOD Moderate
MOV Moving
MTW Mountain wave
NC No Change
OBS Observed
OBSC Obscured
OCNL Occasional
SEV Severe
SQL Squall line
STNR Stationary
TOP Top
TS Thunderstorm
TURB Turbulence
WI Within
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Flight Theory PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 353
