Low: Dst > -20 nT Medium: -20 nT > Dst > -50 nT High: -50 nT > Dst > -100 nT Extreme: Dst < -100 nT Solar Wind Conditions (gaps filled) Interplanetary Magnetic Field (gaps filled)
Medium: -20 nT > Dst > -50 nT High: -50 nT > Dst > -100 nT Extreme: Dst < -100 nT Solar Wind Conditions (gaps filled) Interplanetary Magnetic Field (gaps filled)
High: -50 nT > Dst > -100 nT Extreme: Dst < -100 nT Solar Wind Conditions (gaps filled) Interplanetary Magnetic Field (gaps filled)
Extreme: Dst < -100 nT