Numerical Forecasting
Numerical Weather Prediction
Numerous
NVA
NW
NWD
NWLY
NWP
NWR
NWRD
NWRN
NWS
NWSH
NWSO
NXT
| OBS
OBSC
Obscuration
Obscuring Phenomena
Observation well
Occluded Front
Occluded Mesocyclone
Oceanography
OCFNT
OCNL
OEODM
Office of Global Programs
Offshore Breeze
Offshore Flow
Offshore Waters
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