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Weather symbols/mapsReferenceshttp://www.jeppesen.com/wlcs/html/wx_surf.html http://weather.unisys.com/surface/details.html#radar http://www.localnetnet.be/weerrap.htm (dutch) Surface Weather Depiction
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| Surface Fronts | Cold fronts are dark blue, warm fronts are red, occluded fronts are purple, stationary fronts are alternating red/blue. Surface Troughs are dashed purple lines |
| Isobars |
Solid white lines representing contours of sea-level pressure. Drawn at 4 mb intervals and labeled with the pressure (1008 = 1008 mb and 996 = 996 mb). |
| Pressure Centers |
Blue H denotes center of high sea-level pressure, and red L denotes center of Low sea-level pressure. Value of central pressure is labeled beneath the center with the last two digits (1008 = 1008 mb and 996 = 996 mb). |
| Tropical Systems |
The current position of all tropical systems is depicted on the map using standard symbols. A red "L" denotes a Tropical Depression (wind speed less than 35 kts), a red tropical symbol with a hole in the middle denotes a Tropical Storm (wind speed between 35 and 64 kts), and a solid filled symbol denotes a hurricane/typhoon/tropical cyclone (wind speed greater than 64 kts). |
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Present Weather |
Any station reporting present weather is depicted with the appropriate weather sybmol in yellow at the airport location. To identify the type of weather, see the map symbol help page. |
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Temperature Contours |
Dotted light blue lines represent contours of current temperature as reported by all available stations in the region. |
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Radar Base Reflectivity |
U.S. maps only. Contains latest NEXRAD base reflectivity overlay. |

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