NCEDC archive unavailable: Tue Feb 27 noon-1pm PST

February 27th, 2018

The NCEDC data archive will be unavailable this coming Tuesday from 12:00pm-1:00pm PDT. Needed patches will be applied. Please plan accordingly for this interruption in service.

Note that this interruption will also apply to the NCALM data archive.

DART system fully operational

December 12th, 2017

The NCEDC DART archive problems were resolved on 2017/12/08. All continuous data for the days 2017.340-342 (2017/12/06-2017/12/08) have been recovered. The DART now contains a complete set of data and is fully operational.

DART system experiencing problems

December 8th, 2017

Our DART system has been experiencing problems since day 2017.340 (2017/12/06). We are currently assessing the
situation and working on restoring access to continuous real time data. We apologize for the inconvenience.

All BG stations online again

October 20th, 2017

All BG stations from the planned Calpine power outage are online again. Data resumed flowing to around 2017/10/17 19:24 UTC.

EVT_FAST, NETDC & STP services to be retired (December 2017)

October 13th, 2017

The NCEDC offers a number of web services that provide improved functionality formerly served by the EVT_FAST, NETDC & STP systems.
The NCEDC will shut down the following services on December 31, 2017:

  • NetDC: The NetDC project was initiated almost 20 years ago and enabled users to access distributed
    data from "Networked Data Centers". As of today, all data centers, including IRIS have retired
    their NetDC system. Similar capabilities are available for:

  • EVT_FAST: EVT_FAST was initially developed as an interim tool for accessing NCSS Event data. It was later
    enhanced to also include the EGS data. The same features are now provided by our NCEDC EventData
    Web Service (
  • STP: STP (Seismic Transfer Program) is a client-server system that provides time-series data. Users can run
    a command-line STP client program to retrieve either continuous or event data. The NCEDC now offers
    command-line scripts such as FetchData or FetchEventData that work in conjunction with our FDSN DataSelect
    and NCEDC EventData Web Services to access continuous and event time-series. Those scripts are available at

The FDSN-compatible and NCEDC web services are available at:

Please note that our email based BREQ_FAST system will still remain in service.
Please contact the NCEDC at if you have any questions.

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