Western Digital Corp. (NASDAQ: WDC) announced that on Saturday, June 15, an unexpected power outage occurred in the Yokkaichi region in Japan, affecting production operations at the flash fabrication facilities operated by the company's joint venture partner, Toshiba Memory Corporation. The power outage impacted both the facilities and process tools and Western Digital is working closely with its joint venture partner to bring the facilities back to normal operational status as quickly as possible.

Western Digital continues to assess the impact of this event. The company currently expects the incident will result in a reduction of Western Digital's flash wafer availability of approximately 6 exabytes, the majority of which is expected to be contained in the first quarter of fiscal year 2020.