Winter weather

• Overview - Winter Forecasting
• The Bergeron-Findeisen process (written by Dana Tobin)
• The physics of snowflakes (courtesy of snowcrystals.com)
• Snowflake guide (courtesy of snowcrystals.com)
• Snow morphology cheatsheet. Snow morphology diagram one. Snow morphology diagram two (detailed).
• Definitions

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

• The "rain-snow" line
• Partial thickness technique
• Freezing drizzle scenario when whole layer is below freezing (Air Weather Service document)
• Snow-Liquid Ratio (SLR)

           1) Predicting SLR
           2) The Dube Flowchart
           3) The Cobb and Waldstreicher technique
               i.) Conference paper . . Recorded presentation of technique . 
               ii.) Example used in private sector - Bouldercast.com. 
               iii.) Current forecasts using this technique (University of Iowa website)
           4) Accounting for compaction (empirical equation)

• Winter weather prediction notes

           1) Forecasting guidelines 
           2) Detailed presentation on winter precipitation (by NOAA's Wed Junker)
           3) 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

• Avalanches

            1) Videos: a. Slab avalanches; b. Point release example;  c. Skier overview on avalanche theory
            2) Overview on avalanches 
            3) Subsets of avalanche types

• Summary of mountain terrain wind scenarios

            1) Overview
            2) Graphical summary

• Downslope wind events and Santa Ana wind events

            1) Predicting Chinook and Santa Ana Wind events
            2) The Froude number
                 i.) Overview
                 ii) Graphics for different Froude numbers
​                 iii) Experimental website using the Froude number for Vermont downslope wind events and other winter concerns 
                      More information on this website. Also see this YouTube video
            3) The Santa Anna Wildfire Threat index (SAWTi) . Weather and Forecasting paper on SAWTi .
            4) Supplementary material --- 1) Santa Ana wind webpage ; 2) Santa Ana wind FAQ
            5) Papers on Santa Ana Winds: a. Climatology ; b. Another climatology paper;  c. Diagnostics; d. Oct. 2017 wildfire event

• 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