MIXED SURFACE ANALYSIS ( MSA)
WESTERN/MIDWESTERN CONUS
NORTHWEST SATELLITE
The Mixed Surface Analysis maps show a comprehensive analysis of current conditions and fronts at ground level using radar and infrared satellite imagery. The Surface Analysis loop animation shows sequential maps at intervals for the past time period. Surface weather analysis maps are a special type of weather map that provides a view of weather elements over a geographical area at a specified time based on information from ground-based weather stations. Weather maps are created by plotting or tracing the values of relevant quantities such as sea level pressure, temperature, and cloud cover onto a geographical map to help find synoptic scale features such as weather fronts.
NORTHWEST OBSERVATIONS