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Alan Crouse
General Member

Saturday Update:

NOMADS users,

The data center network maintenance that took place on 10/22 has caused many unexpected issues. Beginning early today our system admins began to troubleshoot reports of both the Opendap and Grib Filter services being unresponsive. Unfortunately, with the complexity of the issues within the data center, the team was unable to restore the services. At this time, both OpenDap and Grib Filter services are down. We will continue to persevere through this incredibly impactful outage and work as quickly as we can to recover NOMADS.

As a mitigation to the broken services, users can still download full files over https. Or leverage the idx files with the fast downloading method, explained here:


We appreciate the impact this outage is having on our users, and apologize for the disruption.

Carissa Klemmer
NCEP Central Operations
IDSB Branch Chief


Late Friday Update:

NOMADS-FTPPRD list <ncep.list.nomads-ftpprd@lstsrv.ncep.noaa.gov>Unsubscribe
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Fri, Oct 23 at 8:21 PM

The team has been working all day but were unable to find the root cause of the GEFS and NAM problems that are preventing them from being on NOMADS. This data will be out over the weekend, with restoration planned for Monday.

They are still available via HTTPS and FTP on FTPPRD here:


We will be standing down for now and resuming at 12UTC Monday. We apologize for the impact this is having to your scientific endeavors, and look forward to getting this fixed.

Thank you.

Anne Myckow
Dataflow Team Lead


From NOAA…

NCEP.list.NOMADS-ftpprd mailing list


Our engineers continue to work to restore NOMADS to full operational capability. At this time the NAM and GEFS remain unavailable. We will notify users when all issues are resolved.

Carissa Klemmer
NCEP Central Operations
IDSB Branch Chief


– RASP/Windgrams use NAM.