Plain Symbols (Fronts etc.)
Cold front
Line with triangles on top.
Stratus
A single horizontal line.
Wind speed of 10 knots
Straight horizontal line with one full length stroke.
No cloud, with wind speed of 15 knots and no rain.
Circle with no shading, horizontal line with 1 full length strokes and 1 half length joined to the cloud cover circle.
No cloud cover, with heavy and continuous rain, calm wind conditions.
Empty circle, with four shaded dots off to the side, in the four cardinal points (position) and a empty ring off to the other side.
Warm Front
Altocumulus
Wide U-shape
Wind speed of 5 knots
Straight horizontal line with one half length stroke
1/4 cloud coverage with speed of 10 knots, small cumulus clouds and a drizzle.
Circle with a 1/4 shaded, straight horizontal line with one full length stroke attached to cloud cover circle, and a shaded comma off to the side.
5/8th cloud coverage with cirrocumulus clouds, and showers accompanied by hail and heavy intermittent rainfall.
Circle, quartered, with 1/2 shaded, walking-stick with a 2nd curve to one side, a big triangle upside down with a smaller triangle right side up, on top and 3 shaded dots in a vertical line, off to the side
Occluded Front
Line with interchanging triangles and semi-circles on top.
Nimbostratus
Wind speed of 35 knots
Straight horizontal line, with 3 full length strokes and one half length stroke
1/8th cloud cover with wind speed of 10 knots and cirrus clouds
Empty circle with a line down the center, horizontal line with one full length stroke attached and a n umbrella-like symbol to the side.
1/2 cloud cover with a hurricane, haze and a wind speed of <5 knots.
Circle half shaded, a whirlwind symbol off to one side, infinity symbol to a side with a straight horizontal line.
Hurricane
Whirlwind shaped drawing with shaded center. (some sources have a empty center but, let's leave this one up to miss)
Stratocumulus
A straight line into a semi-circle back into a straight line, facing each other up and down. One is upside down and one is right side up.
Calm wind conditions
Ring with empty center
3/4 cloud cover with fog and a temperature of 5°C.
Circle with 3/4 shaded and 3 lines off to one side with the temperature in the top right corner.
sky obscured with wind speed of 250 knots and hail and a temperature of 500°C
Circle with X drawn inside, horizontal line with 5 shaded triangles attached to the cloud cover, and a small triangle off to one side, temperature off to the top left corner.
Wide, two activity area ITCZ
Two lines nearly converging at one point, with three lines at the narrower side and two lines at the wider side.
Cirrus
Lips, or an umbrella. A straight line separating into 2 curved lines, one going upwards then back towards origin and then the other going downwards then curving towards origin.
Wind speed of 50 knots
Straight horizontal line with one shaded triangle.
7/8th cloud cover, air temperature of 15°C, with cumulonimbus clouds, moderate and continuous rain and a wind speed of 35 knots.
Shaded circle with a slim rectangle of unshaded in the center, temperature to the top left corner of the circle, semi-circle in front an upside down trapezium to the bottom of the cloud cover, three shades dots in a triangle to the side and a horizontal line with 3 full length stroke and 1 half length stroke attached to the cloud cover circle.
3/8th cloud coverage with thunderstorms, large cumulus clouds, wind blowing from the south west at a speed of 55 knots and wind blowing from the north with a wind speed of 100 knots.
Circle with line down the center and a 1/4 shaded, double semi-circles on top each other (top one smaller) R-shaped symbol with arrow (idk man) off to one side, horizontal line with shaded triangle and one half-length stroke, pointing towards the south (the line not the triangles) west attached to the cloud cover, and horizontal line with 2 shaded triangles, facing the north. (not the triangles the line) attached to the cloud cover.