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Here is one approach to conducting your initial self-briefing.  Keep in mind a simple rule-of-thumb as you work through the weather data collection process: the more doubtful the weather, the more information you need to obtain.

Television/Internet Sources. For long-range weather planning, many pilots start with televised or online weather, such as The Weather Channel (TWC) on television or the Internet. TWC is not an FAA-approved source of weather
information, but its television and Internet offerings provide both tactical and strategic summaries and forecasts (up to 10 per day). TWC provides compact, easy-to-use information that can be a useful supplement to approved sources. For example, one TWC Internet page includes a weather map with color-coding for Instrument Flight Rules (IFR) and Marginal Visual Flight Rules (MVFR) conditions at airports around the country (http://www.weather.com/maps/aviation.html).  This and other TWC features can give you a very useful first snapshot of weather conditions you will need to evaluate more closely.  The National Weather Service’s Aviation Weather Center (http://aviationweather.gov/) is another useful source of initial weather information. A look at the AIRMET and SIGMET watch boxes can quickly give you an idea of areas of marginal or instrument weather.

Direct User Access Terminal System (DUATS). Next, get a printed version of the FSS briefing package by obtaining a standard briefing for your route on DUATS. Free and accessible to all pilots via the Internet at www.duat.com (DTC) or www.duats.com (CSC), this resource provides weather information in an FAA-approved format and records the transaction as an official weather briefing. You might want to print out selected portions of the DUATS computer briefing for closer study and easy reference when you speak to a Flight Service briefer.

Aviation Digital Data Service (ADDS): You should also take a look at the wealth of weather information and resources available online via the Aviation Digital Data Service (ADDS), a joint effort of NOAA Forecast Systems Laboratory, NCAR Research Applications Program (RAP), and the National Centers for Environmental Prediction (NCEP) Aviation Weather Center (AWC).  Available at
http://adds.aviationweather.noaa.gov, ADDS combines information from National Weather Service (NWS) aviation observations and forecasts and makes them available on the Internet along with visualization tools to help pilots use this information for practical flight planning.  For example:
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For METARs, TAFS, AIRMETS, and SIGMETS, the ADDS java tool can zoom in on specific parts of the country.

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For pilot reports (PIREPs), the ADDS Java tool can zoom in on a specific part of the country and specify the type of hazard reported (icing, turbulence, sky and weather). The tool also allows you to limit data to specified altitudes and time periods. Map overlays including counties, highways, VORs, and Air Route Traffic Control Boundaries are available.
　
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本文鏈接地址：General Aviation Pilot’s Guide to Preflight Weather Planning, Weather Self-Briefings, and Weather Decision Making(4)