Update #1: Both SOLAR SAN/C2 and SWPC confirmed data flow at 03:43z after the SOLAR team coordinated network support. Discussions are still ongoing with network service providers on root cause, and the team will continue to monitor for network stability.

TOPIC: SOLAR-1 Data Outage - Sep 23 @ 2347z

Date/Time Issued: September 24, 2026 0427Z

Product(s) or Data Impacted: All Products

Date/Time of Initial Impact: September 23, 2026 at 23:47:16z

Date/Time of Expected End: September 23, 2026 at 03:43:36z

Length of Event: 3 hours 56 minutes

Details/Specifics: Starting at 2347z, SAN stopped receiving data from KSAT stations at both the WCDAS and CBU sites. This impacted downstream C2, GCCS, and SWPC systems. Root cause is unknown and the engineering team is contacting KSAT along with network administrators to restore the data.

Contact for Further Information: nesdis.ospo.solar.engineers@noaa.gov during normal business hours

This notification was sent to ESPC.Notification@noaa.gov mailing list. If you wish to unsubscribe or subscribe to this list, please contact ESPC Help-Desk at ESPCOperations@noaa.gov with your request. Please note: it may take up to two business days to process your request. For any additional information you can reach ESPC at 301-817-3880 (24x7).