Arwix/Sun Explorer

["Minor impact on satellite operations possible", "Corrective actions to orientation may be required by ground control; possible changes in drag affect orbit predictions", "Surface charging may occur on satellite components, drag may increase on low-Earth-orbit satellites, and corrections may be needed for orientation problems", "May experience surface charging and tracking problems, corrections may be needed for orientation problems", "May experience extensive surface charging, problems with orientation, uplink/downlink and tracking satellites"]

["Migratory animals are affected at this and higher levels; aurora is commonly visible at high latitudes (typically 60° geomagnetic lat.)", "HF radio propagation can fade at higher latitudes, and aurora has been seen as low as New York and Idaho (typically 55° geomagnetic lat.)", "Intermittent satellite navigation and low-frequency radio navigation problems may occur, HF radio may be intermittent, and aurora has been seen as low as Illinois and Oregon (typically 50° geomagnetic lat.)", "Induced pipeline currents affect preventive measures, HF radio propagation sporadic, satellite navigation degraded for hours, low-frequency radio navigation disrupted, and aurora has been seen as low as Alabama and northern California (typically 45° geomagnetic lat.)", "Pipeline currents can reach hundreds of amps, HF (high frequency) radio propagation may be impossible in many areas for one to two days, satellite navigation may be degraded for days, low-frequency radio navigation can be out for hours, and aurora has been seen as low as Florida and southern Texas (typically 40° geomagnetic lat.)"]

Kp index

Aurora

Aurora oval

Corrected geomagnetic coordinates

Geomagnetic activity

Geomagnetic field

Geomagnetic storm

High latitude

Middle latitude

Solar wind

Speed

km/sec

Density

p/cm³

Temperature

Northern hemisphere