Last Updated: 03/03/2023


Go to SWPC-CAT-Web


The original IDL version of the SWPC_CAT tool was developed by George Millward and Vic Pizzo at NOAA Space Weather Prediction Center (SWPC). It is the primary tool being used by NOAA SWPC in measuring key parameters of a Coronal Mass Ejection (CME) as it emerges from the solar corona. Please see their README [PDF] for more detailed information about the original tool.

This SWPC_CAT_Web Tool is an online version of the original SWPC_CAT being developed and maintained by the Community Coordinated Modeling Center (CCMC) at NASA. The web version of SWPC_CAT is written in Python.

NASA Open-Source Project

Source code for SWPC_CAT_Web tool (the python version) is available on this NASA public GitHub project under a permissive NASA open-source license.

Publication Policy

For tracking purposes for our government sponsors, we ask that you notify the CCMC whenever you use any CCMC tools/software systems in any scientific publications and/or presentations. Follow the steps on the publication submission page

See our full publication policy for a sample 'acknowledgement statement' to be included in your publication.