Surface data is reported hourly from places like airports and automated observing platforms. The types of plots using surface data include a composite surface map, weather depiction for aviation, regional plots for the US, Canada, Mexico and Alaska. Contoured analyses of various parameters including temperature and pressure. Finally, there are meteograms which are time cross-sections for individual cities. These data are updated hourly at around 30 minutes past the hour.

More Information on Plots
More Information on Meteograms
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