Topic: 4-liner UEF elements are unavailable.

Date/Time Issued: January 04, 2020 0400Z

Product(s) or Data Impacted: NOAA-18 and NOAA-19 Navigation

Date/Time of Initial Impact: January 04, 2020 0600Z

Date/Time of Expected End: TBD

Length of Outage: TBDM-B

Details and Specifics of Change:M-B ESPC has not received the NOAA-18 and NOAA-19 orbit vectors and are investigating the problem.M-B At this point, we do not expect to receive the vectors in time for the 0600Z cutoff.

Contact Information for Further Information: ESPC Operations at and 301-817-3880

Web Site(s) for applicable information: N/A

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