General Aviation Pilot’s Guide to Preflight Weather Planning, Weather Self-Briefings, and Weather Decision Making(18)

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23 12/09
Preflight Guide v. 1.3
Appendix 1 Weather Products and Weather Providers
The table below lists some of the most common weather products and providers:
Source AC (Severe Wx Outlook) AIRMET / SIGMET charts, Convective outlook charts, Prog. charts, Radar (NEXRAD) charts, Radar summary charts, Surface analysis Center Weather Advisory (ATC) charts, Weather depiction FA (18-hr area forecast) FD (winds/temps aloft forecast) FD (winds/temps aloft forecast) METAR PIREP Satellite SD (hourly radar) TAFs TWEB 
Format: T = text;  G = Graphic.  Text may be written or spoken. 
Preflight  T  T  G  G  G  G  G  T  G  T  T  G  T  T  G  T  T  T 
Commercial vendor  Search Internet for commercial weather products." 
Public NWS or NOAA site  X  X  X  X  X  X  X  X  X  X  X  X  X 
ADDS (aviation digital data)  X  X  X  X  X  X  X  X  X  X  X  X  X  X  X  X  X 
DUATS  X  X  X  X  X  X  X  X  X  X  X 
FSS (automated TIBS)  Short automated briefing, origin & radius, advisories & summary, ceil, vis, w. easy link to FS Specialist 
FSS (standard)  Verbal synopsis of all available information 
FSS (abbreviated)  Short, verbal synopsis, based on all available information 
FSS (outlook)  Short, verbal forecast based on all available information 
The Weather Channel  X  X  X 

En route 
cockpit avionics  products vary 
EFAS  Verbal synopsis, based on all available information 
HIWAS  X  X  X 
TWEB  Short automated synopsis, origin & radius, wx advisories, ceil, vis, winds, radar, PIREPS, alerts 

Both 
ASOS  ASOS, ATIS, AWOS are similar to METAR, incl. Place, Time, Wind direction/speed, Visibility, Ceiling, Temp/Dewpoint, Altimeter 
ATIS 
AWOS 
CWA  Short, verbal synopsis, based on all available information 

(NOTE: Products directly accessible to the user are marked with an “X.”)
ADDS Aviation Digital Data Service (ADDS)  (http://adds.aviationweather.noaa.gov/) ASOS Automated Surface Observing System ATIS Automated Terminal Information Service AWOS Automated Weather Observing System CWA Center Weather Advisory DUATS Direct User Access Terminal System EFAS En route Flight Advisory System FSS Flight Service Station HIWAS Hazardous In-flight Weather Advisory System LLWAS Low Level Wind Shear Alert System NOAA National Oceanic and Atmospheric Association NWS National Weather Service TIBS Telephone Information Broadcast Service TWEB Transcribed Weather Broadcast
　
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