Category: "Data Center Operations"

NCEDC archive unavailable: Wed Mar 28 11am-2pm PST

March 26th, 2018
The NCEDC data archive will be offline this coming Wednesday from 11:00am-2:00pm PDT. Please plan accordingly for this interruption in service. more »

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. more »

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. more »

FISSURES DHI services to be retired (Jan 2017)

January 6th, 2017
The NCEDC provides a number of web services that provide improved functionality formerly provided by the FISSURES Data Handling Interface (DHI) system. FISSURES DHI, initially developed by IRIS, defined a client/server system for querying and delivering… more »

NCEDC adopts NCEDC.ORG domain name

September 14th, 2005
September 14th, 2005 The Northern California Earthquake Data Center is pleased to announce the acquisition and use of the domain name NCEDC.ORG for the its network facilities. The NCEDC web pages are now available at, and all the… more »

IP Address Change

May 26th, 2005
The NCEDC will begin moving its computers to a new, more seismically secure building and computer room facility. This will require a new IP address for the NCEDC web and ftp server. The new address, starting at 2005/05/26,12:00 PDT will be:… more »

Disk drive died with NetDC, BREQ_FAST, and EVT_FAST requests

October 28th, 2003
October 28, 2003 During a computer upgrade at the NCEDC, the disk drive holding the current queue of NetDC, BREQ_FAST, and EVT_FAST request died. We restored the filesystem from backup tapes, but are unable to recover any unprocessed requests. If you… more »

NCEDC rebuilding mass store filesystem

April 23rd, 2003
April 23, 2003 The NCEDC is in the process of rebuilding the mass store file system. As a result, certain filesystems are unavailable at this time. The process will take place over the next few days. The NCEDC is a joint project of the University of… more »

Updated Web pages for the NCEDC

August 14th, 2002
October 14, 2002 The NCEDC revamped its Web pages this month, with the goal of making the data center easier to use! In addition to updating the look of the Web pages, we have provided new and addition information about the holdings of the data center… more »

Real-time earthquake information during USGS Internet cut-off

December 6th, 2001
Update on Dec. 9, 2001: The USGS Web sites are back! On Thursday, Dec. 6, 2001, the USGS was ordered to disconnect all external Internet connections by the Office of the Secretary of the Interior. The order includes email as well as popular Web pages.… more »

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