Hugh Pickens writes writes: "Three large explosions from the Sun over the past few days have prompted US government scientists to caution users of satellite, telecommunications and electric equipment to prepare for possible disruptions over the next few days that could affect communications and global positioning system (GPS) satellites, leave thousands without power for weeks to months, and might even produce an aurora visible as far south as Minnesota and Wisconsin. "The concern is if the electric grid lost a number of transformers during a single storm, replacing them would be difficult and time-consuming," says Rich Lordan, senior technical executive for power delivery and utilization at the Electric Power Research Institute (EPRI). The largest solar storm in recorded history was in 1859 when communications infrastructure was limited to telegraphs. Some telegraph operators reported electric shocks, papers caught fire, and the Northern Lights appeared as far south as Cuba and Hawaii. The first of the three solar explosions from the sun already passed the Earth on Thursday with little impact and the second is passing the Earth now and "seems to be stronger." "We'll have to see what happens over the next few days," says space weather scientist Joseph Kunches. "[The third storm] could exacerbate the disturbance in the Earth's magnetic field caused by the second (storm) or do nothing at all.""
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