Amateur Radio: Usable HF Frequencies
(page refreshed every 20 minutes)
Use the indicated color (red, yellow, green, blue, white, etc.) to determine
the recommended HF frequencies for contacts.
Any white “bubble” indicates no suitable frequency or high absorption.

Amateur Radio: Usable HF Frequencies
Realtime Geomagnetic Developments from IRF – Swedish Institute of Space Physics (Institutet för rymdfysik, IRF)
27 Day Magnetic Activity Forecast from Spaceweather Canada
A great document on space weather and its effects on technology from Government of Canada
US NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION and National Weather Service
Space Weather Enthusiasts Dashboard
Check out the Australian Government Bureau of Meteorology and their Space Weather Services
Follow @_SpaceWeather_ On Twitter