Per the linked dashboard, some instances in a single AZ in a single Region are having storage issues. Calling EC2 "down" is a bit dramatic, provided AMZN are being sincere with their status reports. Any system that can competently fail over to another AZ will be unaffected.
Read their report from the major outage earlier this year, they start out by saying "elevated error rates", when many services were in fact down, and it wasn't until hours later they finally admitted to having an issue that affected more than just one availability zone.
From Forbes: ”We are investigating elevated errors rates for APIs in the US-EAST-1 (Northern Virginia) region, as well as connectivity issues to instances in a single availability zone.” By 11:49 EST, it reported that, ”Power has been restored to the impacted Availability Zone and we are working to bring impacted instances and volumes back online.” But by 12:20 EST the outage continued, “We are continuing to work to bring the instances and volumes back online. In addition, EC2 and EBS APIs are currently experiencing elevated error rates.” At 12:54 AM EST, AWS reported that “EC2 and EBS APIs are once again operating normally. We are continuing to recover impacted instances and volumes.”