We are excited to announce the launch of our new forums! You can access it forums.aavso.org. For questions, please see our blog post. The forums at aavso.org/forum have become read-only.
Announcement: New Applications
The existing WebObs will soon be replaced by WebObs 2.0! Please use this application to submit future observations: Submit Photometric Observations
Hi David,
All the American Relative SSN and SID Events data are archived at NOAA/NGDC:
ASSN: http://www.ngdc.noaa.gov/stp/space-weather/solar-data/solar-indices/sunspot-numbers/american/
SID data: http://www.ngdc.noaa.gov/stp/space-weather/ionospheric-data/sids/aavso/
Rodney