Satellite operations: Single-event upsets, noise in imaging systems, and slight reduction of efficiency in solar panel are likely. Other systems: Blackout of HF radio communications through the polar regions and increased navigation errors over several days are likely.īiological: Radiation hazard avoidance recommended for astronauts on EVA passengers and crew in high-flying aircraft at high latitudes may be exposed to radiation risk. Satellite operations: May experience memory device problems and noise on imaging systems star-tracker problems may cause orientation problems, and solar panel efficiency can be degraded. Other systems: Complete blackout of HF (high frequency) communications possible through the polar regions, and position errors make navigation operations extremely difficult.īiological: Unavoidable radiation hazard to astronauts on EVA passengers and crew in high-flying aircraft at high latitudes may be exposed to radiation risk. Satellite operations: Satellites may be rendered useless, memory impacts can cause loss of control, may cause serious noise in image data, star-trackers may be unable to locate sources permanent damage to solar panels possible. Other systems: Migratory animals are affected at this and higher levels aurora is commonly visible at high latitudes (northern Michigan and Maine).īiological: Unavoidable high radiation hazard to astronauts on EVA (extra-vehicular activity) passengers and crew in high-flying aircraft at high latitudes may be exposed to radiation risk. Spacecraft operations: Minor impact on satellite operations possible. Power systems: Weak power grid fluctuations can occur. Other systems: HF radio propagation can fade at higher latitudes, and aurora has been seen as low as New York and Idaho (typically 55° geomagnetic lat.). Spacecraft operations: Corrective actions to orientation may be required by ground control possible changes in drag affect orbit predictions. Power systems: High-latitude power systems may experience voltage alarms, long-duration storms may cause transformer damage. Other systems: 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.). Spacecraft operations: Surface charging may occur on satellite components, drag may increase on low-Earth-orbit satellites, and corrections may be needed for orientation problems. Power systems: Voltage corrections may be required, false alarms triggered on some protection devices. Other systems: 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.). Spacecraft operations: May experience surface charging and tracking problems, corrections may be needed for orientation problems. Power systems: Possible widespread voltage control problems and some protective systems will mistakenly trip out key assets from the grid. Other systems: 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.). Spacecraft operations: May experience extensive surface charging, problems with orientation, uplink/downlink and tracking satellites. Power systems: Widespread voltage control problems and protective system problems can occur, some grid systems may experience complete collapse or blackouts.
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