A

B

C

D

E

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J

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N

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P

Q

R

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V

W

X

Y

Z

 
R

R - Base Reflectivty, red, right, or restricted area
RA - Rain
RADAT - Radiosonde observation data
RAFC -   Regional Area Forecast Center
RAFS -   Regional Analysis and Forecasting System.
RAG - Ragged
RAMSDIS -   RAMM Advanced Meteorological Satellite Demonstration and Interpretation System
RAOB - Radiosonde Observation
RAOBS - Radiosonde observations
RCH - Reach or reaching
RCHD - Reached
RCHG - Reaching
RCHS - Reaches
RCKY - Rocky
RCKYS - Rockies
RCM -   Radar Coded Message
RCMD - Recommend
RCMDD - Recommended
RCMDG - Recommending
RCMDS - Recommends
RCRD - Record
RCRDS - Records
RCS -   Reflectivity Cross Section
RCV - Receive
RCVD - Received
RCVG - Receiving
RCVS - Receives
RDA -   Radar Data Acquisition
RDC - Reduce
RDGG - Ridging
RDR - Radar
RDVLP - Redevelop
RDVLPG - Redeveloping
RDVLPMT - Redevelopment
RE - Regard or Recent
REC -   Recreation Report
RECON - Reconnaissance
REF - Reference
REP - Report or reporting or reporting point
REPL - Replace
REPLD - Replaced
REPLG - Replacing
REPLS - Replaces
REQ - Request or requested
REQS - Requests
REQSTD - Requested
RES - Reserve
RESP - Response
RESTR - Restrict
RFC -   River Forecast Center
RFD -   Rear Flank Downdraft
RGD - Ragged
RGL - Regional Model
RGLR - Regular
RGN - Region
RGNS - Regions
RGT - Right
RH - Relative Humidity
RHI -   Range-Height Indicator
RHINO - RHI not operative
RI - Rhode Island
RIOGD - Rio Grande
RL - Report leaving
RLBL - Reliable
RLTV - Relative
RLTVLY - Relatively
RMK - Remark
RMN - Remain
RMND - Remained
RMNDR - Remainder
RMNG - Remaining
RMNS - Remains
RNFL - Rainfall
ROBEX - Regional OPMET bulletin exchange (scheme)
ROC - Rate of climb
ROD - Rate of descent
ROFOR - Route forecast (in aeronautical meteorological code)
ROML -   Regional Operations Manual Letter.
ROSA -   Remote Observing System Automation
ROT - Rotate
ROTD - Rotated
ROTG - Rotating
ROTS - Rotates
RPD - Rapid
RPDLY - Rapidly
RPG -   Radar Product Generator
RPLC - Replace or replaced
RPLCD - Replaced
RPLCG - Replacing
RPLCS - Replaces
RPRT - Report
RPRTD - Reported
RPRTG - Reporting
RPRTS - Reports
RPT - Repeat
RPTG - Repeating
RPTS - Repeats
RQR - Require
RQRD - Required
RQRG - Requiring
RQRS - Requires
RR - Report reaching
RRA - (or RRB, RRC ... etc., in sequence) Delayed meteorological message (message type designator)
RS - Receiver station
RSG - Rising
RSN - Reason
RSNG - Reasoning
RSNS - Reasons
RSTR - Restrict
RSTRD - Restricted
RSTRG - Restricting
RSTRS - Restricts
RTD - Delayed (used to indicate delayed meteorological message; message type designator)
RTE - Route
RTN - Return or returned or returning
RTRN - Return
RTRND - Returned
RTRNG - Returning
RTRNS - Returns
RUC -  Rapid Update Cycle
RUF - Rough
RUFLY - Roughly
RVA -   River Summary
RVF -   River Forecast
RVI -   River Ice Statement
RVR -   River Recreation Statement or Runway Visual Range
RVS -   River Statement or Revise
RVSD - Revised
RVSG - Revising
RVSS - Revises
RW - Rain Shower
RWY - Runway  


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