Update #4: REMINDER M-bM-^@M-^S The PDA/NDE operational environment at the NSOF will be unavailable Monday April 15, 2019 from approximately 1300Z to 1600Z for a planned maintenance activity. When the PDA/NDE environment returns to service, NDE will begin processing the backlog and PDA will begin processing data. For the groups that send products TO PDA, it is important that PDA receive as much of the missed products as possible. If Critical Weather is in effect, this activity will be rescheduled. The April 9, 2019 maintenance activity at the CBU site listed below completed successfully within the allotted time.

Update #3: REMINDER - The PDA/NDE operational environment at the NSOF will be unavailable Monday April 15, 2019 from approximately 1300Z to 1600Z for a planned maintenance activity. When the PDA/NDE environment returns to service, NDE will begin processing the backlog and PDA will begin processing data. For the groups that send products TO PDA, it is important that PDA receive as much of the missed products as possible. If Critical Weather has been declared, this activity will be delayed. The April 9, 2019 maintenance activity at the CBU site listed below completed successfully within the allotted time

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Update #2: REMINDER M-bM-^@M-^SM-BM-B The PDA/NDE backup environment at CBU will be unavailable today from approximately 1300Z to 1600Z for a planned maintenance activity.

Update #1: The date for the maintenance at CBU has been changed to Tuesday April 09, 2019 with the same scheduled Impact and End times. The maintenance date for the NSOF OPS environment remains the same as originally scheduled, Monday April 15, 2019 at the same scheduled impact and end times. See times below.

Topic: Advance notice for ESPDS PDA/NDE Maintenance at the CBU and NSOF sites WILL cause a COMPLETE outage of the respective site for an estimated 3 hours.

Date/Time Issued: April 15, 2019 1414Z

Product(s) or Data Impacted: All products being ingested and disseminated from the scheduled CBU or NSOF site will be affected on the scheduled date.

Date/Time of Initial Impact CBU: April 09, 2019 1300Z

Date/Time of Expected End CBU: April 09, 2019 1600Z

Date/Time of Initial Impact NSOF: April 15, 2019 1300Z

Date/Time of Expected End NSOF: April 15, 2019 1600Z

Length of Event: 3 hours for each site

Details/Specifics of Change: The PDA/NDE environments at CBU and NSOF will be undergoing critical storage maintenance. During this activity there will be a complete outage of service for an estimated three hours at each site. The impact to product distribution during the April 08, 2019 CBU maintenance will be much less significant as this is the backup site. During the NSOF maintenance to the Operational environment on April 15, 2019 the scenario will be the same. A complete outage of the NDE and PDA environments will occur for an estimated three hours during the times above. Schedule impacts for Critical Weather days will be evaluated on a case by case basis and may result in a day for day slip. Updates will be provided for any changes in schedule or duration.

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov and 301-817-3880.

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

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