Sites
1800WXBRIEF.com - Flight Service
Aviation Weather Center (AWC) - NOAA
Radiosonde Data (Skew-T Log-P Diagrams)
Reference Material
Carb Icing Potential (F) or another (C) version
Weather Symbols (Graphical Area Charts)
FAA - GA Guide to Thunderstorms
FAA - Avoiding Flying VFR into Instrument Weather
FAA - How to Choose Weather Resources
FAA - Flight Planning - Weather & More