Links
- Solar images (SOHO)
 - European Space Weather Portal
 - NOAA predictions
 - Space Weather Information Center
 - Space Weather Canada
 - Australian Space Weather Service
 - British Geological Survey (BGS)
 - International Service of Geomagnetic Indices
 - GFZ Indices of Global Geomagnetic Activity
 - WDC Kyoto, Geomagnetic Data Service
 - WDC Copenhagen, Geomagnetic Data Service
 - Intermagnet
 - Super Dual Auroral Radar Network
 
Sun Observation:
Forecast:
Indices:
Databank:
SSC Alerts
Storm Sudden Commencements (ssc) are defined by a brief and abrupt increase or decrease in the  geomagnetic field strength, which marks the beginning of the initial phase of a geomagnetic storm.
                      
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