Surface weather analysis

Surface weather analysis interprets and maps observations near Earth’s surface to identify pressure patterns, fronts, and other meteorological features.

Station model: A compact graphical code for displaying weather observations at a location on a meteorological map. It compresses temperature, wind, pressure, and present weather into each plotted observation.
Weather station: A site equipped to measure and report atmospheric conditions. Its observations provide the point data that surface analysis organizes.
Weather forecasting: The prediction of future atmospheric conditions from observations, physical laws, and models. Forecasters use the analyzed starting state to track systems and anticipate change.
Upper-air analysis: The interpretation and mapping of atmospheric observations above the near-surface layer. It reveals steering flow and vertical structure that a surface map alone cannot show.
Sea-level pressure: The atmospheric pressure adjusted to the equivalent value at mean sea level. Analysts compare it across elevations to trace pressure patterns on surface maps.
Synoptic meteorology: The study of large-scale atmospheric patterns using observations collected across broad regions. Surface analysis is one of its core methods for depicting weather systems.
Weather front: A meteorological boundary between air masses, classified by its movement and structure. Identifying front type helps predict the timing and character of weather changes.
Isotherm: A line connecting points of equal temperature on a map. Temperature contours emphasize thermal patterns, while surface analyses often foreground pressure and boundaries.
Isobar: A line connecting points of equal pressure on a map. Isobars reveal pressure centers and the strength and orientation of pressure gradients.
Air mass: A large body of air with relatively uniform temperature and moisture characteristics. Contrasts between air masses help explain the boundaries mapped as fronts.

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