Geomagnetic Storms High-latitude power systems may experience voltage alarms, long-duration storms may cause transformer damage. Corrective actions to orientation may be required by ground control; possible changes in drag affect orbit predictions. HF radio propagation can fade at higher latitudes, and aurora has been seen as low as New York and Idaho (typically 55° geomagnetic lat.).
S
Solar Radiation Storms No deviations from the norm in the radiation environment were recorded.
R
Radio Blackouts Wide area blackout of HF radio communication, loss of radio contact for about an hour on sunlit side of Earth. Low-frequency navigation signals degraded for about an hour.
Forecast
G
Geomagnetic Storms forecast Weak power grid fluctuations can occur. Minor impact on satellite operations possible. Migratory animals are affected at this and higher levels; aurora is commonly visible at high latitudes (northern Michigan and Maine).
S
Solar Radiation Storms forecast No deviations from the norm in the radiation environment are predicted.
R
Radio Blackouts forecast Limited blackout of HF radio communication on sunlit side, loss of radio contact for tens of minutes. Degradation of low-frequency navigation signals for tens of minutes.