Introduction & principle
References the standard surface-station model and WMO synoptic symbols.
All toolsPopular Science Query
Weather Map Legend Explainer
Explain professional icons and legends used on surface and upper-air weather maps.
Live tool
▲▲▲
Cold front
Blue triangles point toward the direction of motion.
●●●
Warm front
Red semicircles point in the direction the front moves.
▲●
Occluded front
Purple, alternating shapes — cold has overtaken warm.
H
High pressure
Center of an anticyclone — fair weather.
L
Low pressure
Cyclonic center — clouds and precipitation.
⛈
Thunderstorm
Convective rainfall with lightning.
❅
Snow
Frozen precipitation symbol on station model.
≡
Fog
Three horizontal lines on a station plot.
Tool advantage
Single offline reference for the symbols that scare off amateurs reading professional charts.
Detailed usage guide
- 1Pick a symbol category: fronts, pressure systems, precipitation, station model.
- 2Click any symbol for a plain explanation.
Common problems & FAQ
Why are there so many front types?
Surface analyses distinguish cold, warm, stationary, and occluded fronts, each with a distinct symbol.
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