For soundings and/or hodographs for sites across the country try,

• Real-Time Weather Data Upper-Air Page
• Soundings from FSL, can plot observed or model soundings via a java applet.
• Ohio State University

For more information about how upper air observations are gathered, click here.

Raw Mandatory and Significant Levels

The following data links are for use with PC sounding programs or plotting programs use the following links,

• Florida State University
• UCAR

Upper air charts

• College of Dupage The white/US plots are good for hand analysis.
• Real-Time Weather Data has upper air plots and network profiler data.