Weather Prognostic Chart Legend
Weather Symbols
Sky Coverage
Light Rain
Light Snow
Rain Shower
Clear
Sky Cover Missing
Moderate Rain
Moderate Snow
Snow Shower
Few Clouds
Heavy Rain
Heavy Snow
Drizzle
Scattered Clouds
Freezing Rain
Thin Fog
Partly Cloudy
Freezing Drizzle
Thick Fog
Mostly Cloudy
Ice Pellets/Sleet
Haze
Overcast
Sky Obscured
Winds
Pressure Trends
Blowing from West at 75 KTs
Continuously Falling
Falling before a lesser rise
Blowing from Northeast at 25 KTs
Falling, then steady
Rising before a greater fall
Calm Winds
Continuously Rising
Rising, then steady
Blowing from South at 5 KTs
Falling before a greater rise
Steady
Rising before a lesser fall
Fronts
Cold Front
Occluded Front
Dry Line
Warm Front
Trough
Low Pressure Center
Stationary Front
Squall Line
High Pressure Center
Sources: http://www.wpc.ncep.noaa.gov/html/fntcodes2.shtml http://www.wpc.ncep.noaa.gov/html/stationplot.shtml
http://aviationweather.gov/products/swl/info