OAC |
Oceanic area control center |
OAT |
Outside Air Temperature OBND |
OBS |
Observe or observe or observation |
OBSC |
Obscure or obscured or obscuring |
OBSCD |
Obscured |
OBSCG |
Obscuring |
OBST |
Obstacle |
OCFNT |
Occluded front |
OCLD |
Occlude |
OCLDD |
Occluded |
OCLDG |
Occluding |
OCLDS |
Occludes |
OCLN |
Occlusion |
OCNL |
Occasional or occasionally |
OCNLY |
Occasionally |
OCR |
Occur |
OCRD |
Occurred |
OCRG |
Occurring |
OCRS |
Occurs |
OCT |
October |
OFC |
Office |
OFF |
Offshore Forecast |
OFP |
Occluded frontal passage |
OFSHR |
Offshore |
OH |
Ohio or Office of Hydrology, located in Silver Spring, MD. |
OHD |
Overhead |
OHP |
One-Hour Rainfall Rate |
OK |
Oklahoma |
OML |
Operations Manual Letter |
OMTNS |
Over mountains |
ONSHR |
Onshore |
OPA |
Opaque, white type of ice formation |
OPMET |
Operational meteorological (information) |
OPN |
Open or opening or opened |
OPR |
Operator or operate or operative or operating or operational |
OPS |
Operations |
OR |
Oregon |
ORGPHC |
Orographic |
ORIG |
Original |
OSV |
Ocean station vessel |
OTLK |
Outlook |
OTP |
On top |
OTR |
Other |
OTRW |
Otherwise |
OUBD |
Outbound |
OUTFLO |
Outflow |
OVC |
Overcast |
OVNGT |
Overnight |
OVR |
Over |
OVRN |
Overrun |
OVRNG |
Overrunning |
OVTK |
Overtake |
OVTKG |
Overtaking |
OVTKS |
Overtakes |
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