Winter weather

• The Bergeron-Findeisen process (written by Dana Tobin)
• The physics of snowflakes (courtesy of snowcrystals.com)
• Snowflake guide (courtesy of snowcrystals.com)
• Definitions

          1) Winter weather terms 
          2) Snow
          3) Freezing rain
          4) Sleet (see definition in part 1)

• The "rain-snow" line
• Partial thickness technique
• Snow morphology cheatsheet. Snow morphology diagram one. Snow morphology diagram two (detailed).
• Winter weather forecasting guidelines
• Freezing drizzle scenario when whole layer is below freezing (Air Weather Service document) 
• Detailed presentation on winter precipitation (by NOAA's Wed Junker)
• Winter weather forecast checklist (by John Gordon)
• Video lecture on winter precipitation. Audio only.
• Additional (short) video lecture on winter precipitation. Audio only.

Mountain weather

• Avalanche basics
  
• Overview on avalanches
  
• Downslope wind events
  
• Mountain weather workshop (COMET lecture)
  

Specialty winter forecasting websites

• Ski forecasting website (opensnow.com)
  
• Northwest Avalanche Center  (www.nwac.us)
  
• Colorado Avalanche Center (avalanche.state.co.us)
  
• Seattle NWS --- Mount Ranier