Topic: Metop-A anomaly on the MHS

Date/Time Issued: March 23, 2018 1735Z

Product(s) or Data Impacted: MHS Sounding Products

Date/Time of Initial Impact: March 21, 2018 0240Z

Impacts on Users and Significance: MHS sounding products were severely impacted

Date/Time of Expected End: March 21, 2018 1500Z

Length of Outage: ~12 Hours

Details/Specifics of Change:

Metop-A MHS experienced an anomaly starting on 21 March 2018 (18/080) at ~0240Z.EUMETSAT has investigated and confirmed the MHS was in fault mode. The MHS was successfully commanded back to scan mode on March 21, 2018 at ~1500Z. The instrument is currently nominal. It is believed the MHS entered fault mode due to a single event upset, however investigation is still ongoing.

Contact Information for Further Information: ESPC Operations at at 301-817-3880 and/or other contacts as necessary

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

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