Selected DataStreme Weather Map Symbols

Surface Station Model

Temp (F)
Weather
Dewpoint (F)

Pressure (mb)
Sky Cover
Wind (kts)

Data at Surface Station
Temp 45 °F, dewpoint 29 °F,
overcast, wind from SE at 15 knots,
weather light rain, pressure 1004.5 mb

Upper Air Station Model

Temp (C)

Dewpoint (C)

Height (m)

Wind (kts)

Data at Pressure Level
Temp -5 °C, dewpoint -12 °C,
wind from S at 75 knots,
height of level 1564 m

Forecast Station Model

Temp (F)
Weather
Dewpoint (F)

PoP (%)
Sky Cover
Wind (kts)

Forecast at Valid Time
Temp 78 °F, dewpoint 52 °F,
scattered clouds, wind from E at 10 knots,
probability of precipitation 70% with rain showers

Map Symbols

Sky Cover	Wind	Fronts		Selected Weather Symbols
clear	Calm	cold front	warm front	Rain
1/8	1-2 knots (1-2 mph)	stationary front	occluded front	Rain Shower
scattered	3-7 knots (3-8 mph)	trough		Thunderstorm
3/8	8-12 knots (9-14 mph)	radar intensities		Drizzle
4/8	13-17 knots (15-20 mph)	tornado (T) #300		Snow
5/8	18-22 knots (21-25 mph)	severe thunderstorm (S) #287		Snow Shower
broken	23-27 knots (26-31 mph)			Freezing Rain
7/8	48-52 knots (55-60 mph)			Freezing Drizzle
overcast	73-77 knots (84-89 mph)			Fog
obscured	103-107 knots (119-123 mph)			Haze
missing	Shaft in direction wind is coming from			Smoke
				Dust or Sand
				Blowing Snow

The DataStreme Project is supported by the National Science Foundation under Grant No. ESI-9453205.

American Meteorological Society

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