Editing Weather Prediction Center (section)

===Surface analysis===
[[Image:Surface analysis.gif|thumb|250px|A surface weather analysis for the [[United States]] on October 21, 2006.]]
The WPC [[surface weather analysis|Surface Analysis]] is part of the NWS Unified Surface Analysis and a collaborative effort with the [[Ocean Prediction Center]], the [[National Hurricane Center]], and the Honolulu Weather Forecast Office. The WPC focuses on the synoptic and [[Mesoscale meteorology|mesoscale]] features over North America, primarily north of 31N. The surface analysis is a manual analysis of surface fronts and pressure over North America and adjacent oceans performed every three hours. The analysis utilizes a variety of weather data in addition to observations of surface weather conditions, such as upper air observations, global satellite imagery, Doppler weather radar, and model mass fields to ensure that the product is meteorologically consistent.<ref name="AboutWPC"/>