>Fiber has translators connected at each end. IDK how sensitive to power spikes/reflections those translators may be. Just spitballing, fiber is immune to induced voltage but the translators are high speed semiconductors that may become susceptible to flares at some level of severity of exposure. While there are many devices in the fiber run such as these translators, repeaters, signal conditioners, media converters, etc., I think that these devices would largely be unaffected by solar flares due to them being built to reject all manner of electrical noise and interference as well as being well grounded and shielded. These devices need to comply with the telco and electronics industry regulations for their electrical characteristics and therefore are hardened against such exposure. It would take a flare of considerable magnitude to affect them but lots of consumer-level tech would get disrupted long before these devices do. Since we're not hearing reports of people's cell phones, routers, TVs or computers being knocked out, I think that also adds to the idea that the flares didn't harm anything on Earth. Thanks magnetosphere! >>I'll see what I can find from the scientific community impacts, if there are any. >I will be very curious to hear what you find. I'm curious too, but it may be a good while before we hear from the scientific community since they are slow to release any information and often don't report anything at all due to the nature of their work or their desire to understand the impact fully before going public. We'll probably get confirmation about the outage's cause being more mundane long before we will hear of any scientific impacts. But I'll keep my ears open on this.