NCEDC News/Blog: View All Posts By Category

2002 Denali Earthquake

• BDSN HH & HL data now continuous (September 25, 2004)
• NCEDC archives continuous BDSN data for the 2002/11/03 Denali earthquake (March 25, 2004)

2003 San Simeon Earthquake

• Changes to the NCSN/NCEDC catalog (July 18, 2008)
• PG&E seismic data available at the NCEDC (October 20, 2006)
• BDSN HH & HL data now continuous (September 25, 2004)
• NCEDC archives continuous HRSN data following the 2003/12/22 San Simeon earthquake (February 27, 2004)
• NCEDC archives continuous BDSN data for the 2003/12/22 San Simeon Earthquake (January 28, 2004)

2004 Parkfield Earthquake

• Changes to the NCSN/NCEDC catalog (July 18, 2008)
• PG&E seismic data available at the NCEDC (October 20, 2006)
• Availability of Parkfield data (September 28, 2004)

2015 wildfires

• NCSS monitoring returned to normal after Butte and Valley fires (November 19, 2015)
• 2015 wildfires take a toll on seismic monitoring (October 01, 2015)

Berkeley Digital Seismic Network (BDSN, BK)

• Announcement: Acknowledging the NCEDC and Berkeley networks (August 02, 2017)
• MOBB preliminary OBS data available at the NCEDC (October 30, 2006)
• BDSN HH & HL data now continuous (September 25, 2004)
• BDSN BH channels changed to 40 Hz sampling (June 15, 2004)
• NCEDC archives continuous BDSN data for the 2003/12/22 San Simeon Earthquake (January 28, 2004)
• BSL earthquake catalog available in database (December 19, 2003)
• Modifications to the FIR filters on the BDSN and Mini-PBO Q4120 dataloggers (June 30, 2003)
• Quanterra Timing Errors (July 01, 2000)
• BK Network data available in SEED format (October 04, 1999)
• Byteorder problem detected in some NCSN waveform files (March 12, 1999)
• Magnitude change in UC Berkeley Earthquake Catalog (January 23, 1996)

Broadband Instruments

• MOBB preliminary OBS data available at the NCEDC (October 30, 2006)
• YBH Broadband Seismometer Change (May 17, 1996)

Bugs

• Bug corrected in building SEED volumes at the NCEDC (March 26, 2008)
• Minor Data Formatting Error Corrected at the NCEDC (November 23, 2002)
• NCSN Byteorder problem resolved (October 20, 1999)
• Byteorder problem detected in some NCSN waveform files (March 12, 1999)
• Revision of NCSN Catalog (April 20, 1997)
• Magnitude change in UC Berkeley Earthquake Catalog (February 08, 1995)

Calpine/LBL Geysers data (BG)

• BG data unavailable from 2018.064.10:00 to 2018.072.23:00. (April 12, 2018)
• All BG stations online again (October 20, 2017)
• 14 BG stations offline due to planned power outage (October 04, 2017)
• Gap in BG (Geysers) data July 8-9, 2017 (July 19, 2017)
• NCSS monitoring returned to normal after Butte and Valley fires (November 19, 2015)
• 2015 wildfires take a toll on seismic monitoring (October 01, 2015)
• NCSS event review threshold change (May 27, 2013)
• Calpine/LBL Geysers data added to the NCEDC (April 03, 2004)

Catalogs

• Announcement: Acknowledging the NCEDC and Berkeley networks (August 02, 2017)
• NCEDC Catalogs snapshot available on Github (June 06, 2017)
• The NCSS now reports earthquake depth relative to the geoid (sea level) (October 07, 2015)
• Geoid Depth FAQ (October 07, 2015)
• 2015 wildfires take a toll on seismic monitoring (October 01, 2015)
• Timing problem at Mammoth analog stations 01/22/2015 - 01/27/2015 (January 30, 2015)
• EGS Catalog Geysers Magnitude Errors (January 03, 2015)
• Double Difference Locations Now Available (June 02, 2014)
• NCSS event review threshold change (May 27, 2013)
• Changes to the NCSN/NCEDC catalog (July 18, 2008)
• PG&E seismic data available at the NCEDC (October 20, 2006)
• Availability of Parkfield data (September 28, 2004)
• Discrepancy in magnitude from database search (June 14, 2004)
• BSL earthquake catalog available in database (December 19, 2003)
• Earthquake Catalog Search and Map (January 08, 2003)
• Changes to Northern California earthquake catalog search (November 21, 2002)
• NCSN Data Y2K Compliant (October 21, 1999)
• Revision of NCSN Catalog (April 20, 1997)
• Magnitude change in UC Berkeley Earthquake Catalog (January 23, 1996)
• Change in NCSN Earthquake Catalog (August 01, 1995)
• Magnitude change in UC Berkeley Earthquake Catalog (February 08, 1995)

Cite the NCEDC

• Announcement: Acknowledging the NCEDC and Berkeley networks (August 02, 2017)

Data Access Methods

• Entire NCEDC Dataset Now Available Through AWS (February 09, 2024)
• Current issue with ObsPy FDSN web service client (November 01, 2022)
• FTP service to be retired on May 31, 2022 (May 09, 2022)
• BREQ_FAST service to be retired (March 11, 2020)
• EVT_FAST, NETDC & STP services to be retired (December 2017) (October 13, 2017)
• NCEDC Catalogs snapshot available on Github (June 06, 2017)
• FISSURES DHI services to be retired (Jan 2017) (January 06, 2017)
• EventData Web Service for Event-Associated MiniSEED Time Series (June 30, 2014)
• New NCEDC Web Services and Web Service Home (July 19, 2013)
• Web Services - New ways to access data at the NCEDC (November 26, 2012)
• Changes to the NCSN/NCEDC catalog (July 18, 2008)
• Bug corrected in building SEED volumes at the NCEDC (March 26, 2008)
• NCEDC reorganizes EarthScope PBO strain data directory structure (March 17, 2006)
• STP service available at the NCEDC (December 04, 2004)
• FISSURES framework implemented at the NCEDC (November 11, 2004)
• EVT_FAST now supports SEED format (November 11, 2004)
• EVT_FAST system provides access to NCSN waveform data (November 16, 2001)
• Quanterra Timing Errors (July 01, 2000)
• NetDC available at the NCEDC (January 23, 2000)

Data Availability

• Entire NCEDC Dataset Now Available Through AWS (February 09, 2024)
• Current issue with ObsPy FDSN web service client (November 01, 2022)
• FTP service to be retired on May 31, 2022 (May 09, 2022)
• NCEDC archive unavailable: Thu Dec 9th 11am-noon PDT (December 08, 2021)
• NCEDC Outage Jan 1-4, 2021 (December 16, 2020)
• Web Services Unavailable During Scheduled Maintenance Oct 2 (October 01, 2020)
• NCEDC archive unavailable: Tue Mar 10 noon-1pm PDT (March 09, 2020)
• Dataselect and Eventdata Web Services Unavailable During Scheduled Maintenance July 15-16 (July 12, 2019)
• DART system fully operational (December 12, 2017)
• DART system experiencing problems (December 08, 2017)
• All BG stations online again (October 20, 2017)
• 14 BG stations offline due to planned power outage (October 04, 2017)
• Detwiler Fire impacts NC network stations (July 21, 2017)
• Data Center Outage 09/18/2015-09/19/2015 (September 18, 2015)
• Double Difference Locations Now Available (June 02, 2014)
• NSMP first generation SEED metadata available at the NCEDC (February 15, 2012)
• MOBB preliminary OBS data available at the NCEDC (October 30, 2006)
• NCEDC reorganizes EarthScope PBO strain data directory structure (March 17, 2006)
• PBO Strain data available at the NCEDC (June 24, 2005)
• SAFOD Pilot Hole data available at the NCEDC (January 15, 2005)
• NCSN data available in SEED format (November 11, 2004)
• Availability of Parkfield data (September 28, 2004)
• BDSN HH & HL data now continuous (September 25, 2004)
• Calpine/LBL Geysers data added to the NCEDC (April 03, 2004)
• NCEDC archives continuous HRSN data following the 2003/12/22 San Simeon earthquake (February 27, 2004)
• NCEDC archives continuous BDSN data for the 2003/12/22 San Simeon Earthquake (January 28, 2004)
• NCEDC expands continuous 250 Hz archive for HRSN network (January 19, 2004)
• BSL earthquake catalog available in database (December 19, 2003)
• SeismiQuery web interface available (November 15, 2001)
• USGS Low Frequency Geophysical Data available (October 19, 2001)
• BK Network data available in SEED format (October 04, 1999)
• Change in NCSN Earthquake Catalog (August 01, 1995)

Data AvailabilityBerkeley Digital Seismic Network (BDSN, BK)

• NCEDC archives continuous BDSN data for the 2002/11/03 Denali earthquake (March 25, 2004)

Data Center Operations

• Entire NCEDC Dataset Now Available Through AWS (February 09, 2024)
• Current issue with ObsPy FDSN web service client (November 01, 2022)
• FTP service to be retired on May 31, 2022 (May 09, 2022)
• NCEDC archive unavailable: Thu Dec 9th 11am-noon PDT (December 08, 2021)
• NCEDC Outage Jan 1-4, 2021 (December 16, 2020)
• Web Services Unavailable During Scheduled Maintenance Oct 2 (October 01, 2020)
• NCEDC archive unavailable: Tue Mar 10 noon-1pm PDT (March 09, 2020)
• Dataselect and Eventdata Web Services Unavailable During Scheduled Maintenance July 15-16 (July 12, 2019)
• New NCEDC Web Pages (June 13, 2019)
• NCEDC web server migration from Solaris to Linux (June 04, 2019)
• NCEDC archive unavailable: Wed Mar 28 11am-2pm PST (March 26, 2018)
• DART system fully operational (December 12, 2017)
• DART system experiencing problems (December 08, 2017)
• FISSURES DHI services to be retired (Jan 2017) (January 06, 2017)
• NCEDC adopts NCEDC.ORG domain name (September 14, 2005)
• IP Address Change (May 26, 2005)
• Disk drive died with NetDC, BREQ_FAST, and EVT_FAST requests (October 28, 2003)
• NCEDC rebuilding mass store filesystem (April 23, 2003)
• Updated Web pages for the NCEDC (August 14, 2002)
• Real-time earthquake information during USGS Internet cut-off (December 06, 2001)
• NCSN Byteorder problem resolved (October 20, 1999)
• New 2.5 TeraByte Mass Store (April 01, 1999)
• New facilities at UC Berkeley (February 01, 1999)
• IP Address Change (June 16, 1997)
• YBH Broadband Seismometer Change (May 17, 1996)
• Magnitude change in UC Berkeley Earthquake Catalog (January 23, 1996)

Data Center Outages

• NCEDC archive unavailable: Wed May 23 noon-1pm PST (May 23, 2018)
• NCEDC archive unavailable: Wed April 17 2019 noon-3pm PST (April 17, 2018)
• NCEDC archive unavailable: Wed Mar 28 11am-2pm PST (March 26, 2018)
• NCEDC archive unavailable: Tue Feb 27 noon-1pm PST (February 27, 2018)
• 2015 wildfires take a toll on seismic monitoring (October 01, 2015)
• Data Center Outage 09/18/2015-09/19/2015 (September 18, 2015)
• Disk drive died with NetDC, BREQ_FAST, and EVT_FAST requests (October 28, 2003)
• NCEDC rebuilding mass store filesystem (April 23, 2003)
• Real-time earthquake information during USGS Internet cut-off (December 06, 2001)

Data Distribution

• New NCEDC Web Services and Web Service Home (July 19, 2013)
• Web Services - New ways to access data at the NCEDC (November 26, 2012)
• SWC - perl program for downloading waveform data from the NCEDC (May 18, 2011)

Data Holdings

• BG data unavailable from 2018.064.10:00 to 2018.072.23:00. (April 12, 2018)
• Detwiler Fire impacts NC network stations (July 21, 2017)
• Gap in BG (Geysers) data July 8-9, 2017 (July 19, 2017)
• SAFOD Continuous and Event data available at the NCEDC (January 09, 2007)
• MOBB preliminary OBS data available at the NCEDC (October 30, 2006)
• NCEDC reorganizes EarthScope PBO strain data directory structure (March 17, 2006)
• PBO Strain data available at the NCEDC (June 24, 2005)
• SAFOD Pilot Hole data available at the NCEDC (January 15, 2005)
• BDSN HH & HL data now continuous (September 25, 2004)
• NCEDC archives continuous BDSN data for the 2002/11/03 Denali earthquake (March 25, 2004)
• NCEDC archives continuous HRSN data following the 2003/12/22 San Simeon earthquake (February 27, 2004)
• NCEDC expands continuous 250 Hz archive for HRSN network (January 19, 2004)
• SeismiQuery web interface available (November 15, 2001)
• USGS Low Frequency Geophysical Data available (October 19, 2001)
• BK Network data available in SEED format (October 04, 1999)
• Change in NCSN Earthquake Catalog (August 01, 1995)

Data Holdings

• NCEDC archives continuous BDSN data for the 2003/12/22 San Simeon Earthquake (January 28, 2004)

EarthScope PBO

• NCEDC reorganizes EarthScope PBO strain data directory structure (March 17, 2006)
• PBO Strain data available at the NCEDC (June 24, 2005)

Earthquake Catalogue

• NCEDC Catalogs snapshot available on Github (June 06, 2017)
• The NCSS now reports earthquake depth relative to the geoid (sea level) (October 07, 2015)
• Geoid Depth FAQ (October 07, 2015)
• 2015 wildfires take a toll on seismic monitoring (October 01, 2015)
• Timing problem at Mammoth analog stations 01/22/2015 - 01/27/2015 (January 30, 2015)
• EGS Catalog Geysers Magnitude Errors (January 03, 2015)
• Double Difference Locations Now Available (June 02, 2014)
• NCSS event review threshold change (May 27, 2013)
• Changes to the NCSN/NCEDC catalog (July 18, 2008)
• PG&E seismic data available at the NCEDC (October 20, 2006)
• Availability of Parkfield data (September 28, 2004)
• Discrepancy in magnitude from database search (June 14, 2004)
• Calpine/LBL Geysers data added to the NCEDC (April 03, 2004)
• BSL earthquake catalog available in database (December 19, 2003)
• Earthquake Catalog Search and Map (January 08, 2003)
• Changes to Northern California earthquake catalog search (November 21, 2002)
• NCSN Data Y2K Compliant (October 21, 1999)
• Revision of NCSN Catalog (April 20, 1997)
• Magnitude change in UC Berkeley Earthquake Catalog (January 23, 1996)
• Change in NCSN Earthquake Catalog (August 01, 1995)
• Magnitude change in UC Berkeley Earthquake Catalog (February 08, 1995)

Earthquake Depths

• The NCSS now reports earthquake depth relative to the geoid (sea level) (October 07, 2015)
• Geoid Depth FAQ (October 07, 2015)
• Revision of NCSN Catalog (April 20, 1997)

Earthquake Locations

• The NCSS now reports earthquake depth relative to the geoid (sea level) (October 07, 2015)
• Geoid Depth FAQ (October 07, 2015)
• Double Difference Locations Now Available (June 02, 2014)
• NCSS event review threshold change (May 27, 2013)
• PG&E seismic data available at the NCEDC (October 20, 2006)
• Calpine/LBL Geysers data added to the NCEDC (April 03, 2004)
• Earthquake Catalog Search and Map (January 08, 2003)
• Revision of NCSN Catalog (April 20, 1997)
• Change in NCSN Earthquake Catalog (August 01, 1995)

Enhanced Geothermal Systems catalog (EGS)

• EGS Catalog Geysers Magnitude Errors (January 03, 2015)

High Resolution Seismic Network (HRSN, BP)

• Announcement: Acknowledging the NCEDC and Berkeley networks (August 02, 2017)
• NCEDC archives continuous HRSN data following the 2003/12/22 San Simeon earthquake (February 27, 2004)
• NCEDC expands continuous 250 Hz archive for HRSN network (January 19, 2004)
• Modifications to the FIR filters on the BDSN and Mini-PBO Q4120 dataloggers (June 30, 2003)

International Federation of Digital Seismograph Networks

• New NCEDC Web Services and Web Service Home (July 19, 2013)
• Web Services - New ways to access data at the NCEDC (November 26, 2012)

Magnitude

• Double Difference Locations Now Available (June 02, 2014)
• NCSS event review threshold change (May 27, 2013)
• Discrepancy in magnitude from database search (June 14, 2004)
• Calpine/LBL Geysers data added to the NCEDC (April 03, 2004)
• Earthquake Catalog Search and Map (January 08, 2003)
• Changes to Northern California earthquake catalog search (November 21, 2002)
• Revision of NCSN Catalog (April 20, 1997)
• Magnitude change in UC Berkeley Earthquake Catalog (January 23, 1996)
• Change in NCSN Earthquake Catalog (August 01, 1995)
• Magnitude change in UC Berkeley Earthquake Catalog (February 08, 1995)

Magnitude Errors

• EGS Catalog Geysers Magnitude Errors (January 03, 2015)
• Discrepancy in magnitude from database search (June 14, 2004)
• Revision of NCSN Catalog (April 20, 1997)
• Magnitude change in UC Berkeley Earthquake Catalog (February 08, 1995)

Mammoth

• Timing problem at Mammoth analog stations 01/22/2015 - 01/27/2015 (January 30, 2015)

Metadata

• FISSURES DHI services to be retired (Jan 2017) (January 06, 2017)
• NSMP first generation SEED metadata available at the NCEDC (February 15, 2012)
• SWC - perl program for downloading waveform data from the NCEDC (May 18, 2011)
• EVT_FAST system provides access to NCSN waveform data (November 16, 2001)

National Science Foundation

• PBO Strain data available at the NCEDC (June 24, 2005)

Northern California Earthquake Data Center (NCEDC)

• Data Center Outage 09/18/2015-09/19/2015 (September 18, 2015)
• Timing problem at Mammoth analog stations 01/22/2015 - 01/27/2015 (January 30, 2015)
• EGS Catalog Geysers Magnitude Errors (January 03, 2015)
• EventData Web Service for Event-Associated MiniSEED Time Series (June 30, 2014)
• New NCEDC Web Services and Web Service Home (July 19, 2013)
• Web Services - New ways to access data at the NCEDC (November 26, 2012)
• NSMP first generation SEED metadata available at the NCEDC (February 15, 2012)
• SWC - perl program for downloading waveform data from the NCEDC (May 18, 2011)
• MOBB - the first cabled broadband observatory for northern CA (February 27, 2009)
• Changes to the NCSN/NCEDC catalog (July 18, 2008)
• Bug corrected in building SEED volumes at the NCEDC (March 26, 2008)
• NCEDC reorganizes EarthScope PBO strain data directory structure (March 17, 2006)
• PBO Strain data available at the NCEDC (June 24, 2005)
• Byteorder problem detected in some NCSN waveform files (March 12, 1999)

Northern California Seismic System (NCSS)

• NCSS monitoring returned to normal after Butte and Valley fires (November 19, 2015)
• The NCSS now reports earthquake depth relative to the geoid (sea level) (October 07, 2015)
• Geoid Depth FAQ (October 07, 2015)
• Double Difference Locations Now Available (June 02, 2014)
• NCSS event review threshold change (May 27, 2013)
• MOBB - the first cabled broadband observatory for northern CA (February 27, 2009)
• Revision of NCSN Catalog (April 20, 1997)

Northern Hayward Fault Network (NHFN, BK)

• Modifications to the FIR filters on the BDSN and Mini-PBO Q4120 dataloggers (June 30, 2003)
• Quanterra Timing Errors (July 01, 2000)
• BK Network data available in SEED format (October 04, 1999)

PG&E seismic data (PG)

• PG&E seismic data available at the NCEDC (October 20, 2006)

Parkfield

• Availability of Parkfield data (September 28, 2004)
• NCEDC archives continuous BDSN data for the 2003/12/22 San Simeon Earthquake (January 28, 2004)

Parkfield Earthquakes

• SAFOD Pilot Hole data available at the NCEDC (January 15, 2005)

Plate Boundary Observatory (PBO)

• NCEDC reorganizes EarthScope PBO strain data directory structure (March 17, 2006)
• PBO Strain data available at the NCEDC (June 24, 2005)

SEED format

• NSMP first generation SEED metadata available at the NCEDC (February 15, 2012)
• Bug corrected in building SEED volumes at the NCEDC (March 26, 2008)
• NCSN data available in SEED format (November 11, 2004)
• EVT_FAST now supports SEED format (November 11, 2004)
• Minor Data Formatting Error Corrected at the NCEDC (November 23, 2002)
• BK Network data available in SEED format (October 04, 1999)

Sampling Rate

• BDSN BH channels changed to 40 Hz sampling (June 15, 2004)
• Modifications to the FIR filters on the BDSN and Mini-PBO Q4120 dataloggers (June 30, 2003)
• Quanterra Timing Errors (July 01, 2000)

San Andreas Fault Observatory at Depth (SAFOD)

• SAFOD Continuous and Event data available at the NCEDC (January 09, 2007)
• SAFOD Pilot Hole data available at the NCEDC (January 15, 2005)

Schumann Resonance

• Problem with Schumann resonance calculations resolved (December 01, 2003)
• Problem with Schumann resonance calculations (April 18, 2003)

Seismic Analysis Code

• EVT_FAST now supports SEED format (November 11, 2004)
• EVT_FAST system provides access to NCSN waveform data (November 16, 2001)

Strain Data

• NCEDC reorganizes EarthScope PBO strain data directory structure (March 17, 2006)
• PBO Strain data available at the NCEDC (June 24, 2005)
• USGS Low Frequency Geophysical Data available (October 19, 2001)

The Geysers

• NCSS monitoring returned to normal after Butte and Valley fires (November 19, 2015)
• 2015 wildfires take a toll on seismic monitoring (October 01, 2015)
• EGS Catalog Geysers Magnitude Errors (January 03, 2015)
• NCSS event review threshold change (May 27, 2013)
• Calpine/LBL Geysers data added to the NCEDC (April 03, 2004)

Timing Errors

• Timing problem at Mammoth analog stations 01/22/2015 - 01/27/2015 (January 30, 2015)
• MOBB preliminary OBS data available at the NCEDC (October 30, 2006)
• Quanterra Timing Errors (July 01, 2000)

U.S. Geological Survey (USGS)

• Detwiler Fire impacts NC network stations (July 21, 2017)
• NSMP first generation SEED metadata available at the NCEDC (February 15, 2012)
• Real-time earthquake information during USGS Internet cut-off (December 06, 2001)

UC Berkeley Seismological Laboratory (BSL)

• MOBB - the first cabled broadband observatory for northern CA (February 27, 2009)
• MOBB preliminary OBS data available at the NCEDC (October 30, 2006)
• PG&E seismic data available at the NCEDC (October 20, 2006)
• BDSN BH channels changed to 40 Hz sampling (June 15, 2004)

USArray

• BDSN BH channels changed to 40 Hz sampling (June 15, 2004)

USGS National Strong Motion Project

• NSMP first generation SEED metadata available at the NCEDC (February 15, 2012)

USGS Northern California Seismic Network (NCSN)

• Detwiler Fire impacts NC network stations (July 21, 2017)
• 2015 wildfires take a toll on seismic monitoring (October 01, 2015)
• Changes to the NCSN/NCEDC catalog (July 18, 2008)
• MOBB preliminary OBS data available at the NCEDC (October 30, 2006)
• PG&E seismic data available at the NCEDC (October 20, 2006)
• NCSN data available in SEED format (November 11, 2004)
• Changes to Northern California earthquake catalog search (November 21, 2002)
• EVT_FAST system provides access to NCSN waveform data (November 16, 2001)
• Byteorder problem detected in some NCSN waveform files (March 12, 1999)
• Revision of NCSN Catalog (April 20, 1997)
• Change in NCSN Earthquake Catalog (August 01, 1995)

Uncategorized

• DART system fully operational (December 12, 2017)
• All BG stations online again (October 20, 2017)
• WR data back online after >3 day outage (September 29, 2017)
• FISSURES DHI services to be retired (Jan 2017) (January 06, 2017)

Waveform Data

• NCEDC archive unavailable: Thu Dec 9th 11am-noon PDT (December 08, 2021)
• NCEDC Outage Jan 1-4, 2021 (December 16, 2020)
• Web Services Unavailable During Scheduled Maintenance Oct 2 (October 01, 2020)
• NCEDC archive unavailable: Tue Mar 10 noon-1pm PDT (March 09, 2020)
• Dataselect and Eventdata Web Services Unavailable During Scheduled Maintenance July 15-16 (July 12, 2019)
• BG data unavailable from 2018.064.10:00 to 2018.072.23:00. (April 12, 2018)
• DART system fully operational (December 12, 2017)
• DART system experiencing problems (December 08, 2017)
• All BG stations online again (October 20, 2017)
• Announcement: Acknowledging the NCEDC and Berkeley networks (August 02, 2017)
• Detwiler Fire impacts NC network stations (July 21, 2017)
• Gap in BG (Geysers) data July 8-9, 2017 (July 19, 2017)
• NCEDC waveform server down from 11:00-13:00 PT today for system update (June 28, 2017)
• FISSURES DHI services to be retired (Jan 2017) (January 06, 2017)
• EventData Web Service for Event-Associated MiniSEED Time Series (June 30, 2014)
• SWC - perl program for downloading waveform data from the NCEDC (May 18, 2011)
• Bug corrected in building SEED volumes at the NCEDC (March 26, 2008)
• SAFOD Continuous and Event data available at the NCEDC (January 09, 2007)
• MOBB preliminary OBS data available at the NCEDC (October 30, 2006)
• PG&E seismic data available at the NCEDC (October 20, 2006)
• NCSN data available in SEED format (November 11, 2004)
• FISSURES framework implemented at the NCEDC (November 11, 2004)
• Availability of Parkfield data (September 28, 2004)
• BDSN HH & HL data now continuous (September 25, 2004)
• Calpine/LBL Geysers data added to the NCEDC (April 03, 2004)
• NCEDC archives continuous HRSN data following the 2003/12/22 San Simeon earthquake (February 27, 2004)
• NCEDC archives continuous BDSN data for the 2003/12/22 San Simeon Earthquake (January 28, 2004)
• NCEDC expands continuous 250 Hz archive for HRSN network (January 19, 2004)
• EVT_FAST system provides access to NCSN waveform data (November 16, 2001)
• SeismiQuery web interface available (November 15, 2001)
• NetDC available at the NCEDC (January 23, 2000)
• NCSN Byteorder problem resolved (October 20, 1999)
• BK Network data available in SEED format (October 04, 1999)

Web Services

• BREQ_FAST service to be retired (March 11, 2020)
• EVT_FAST, NETDC & STP services to be retired (December 2017) (October 13, 2017)
• EventData Web Service for Event-Associated MiniSEED Time Series (June 30, 2014)
• New NCEDC Web Services and Web Service Home (July 19, 2013)
• Web Services - New ways to access data at the NCEDC (November 26, 2012)

NCEDC News

• Feb 9, 2024:  Entire NCEDC Dataset Now Available Through AWS

• Nov 1, 2022:  Current issue with ObsPy FDSN web service client

• May 9, 2022:  FTP service to be retired on May 31, 2022

Categories

• 2003 San Simeon Earthquake (5)
• 2004 Parkfield Earthquake (3)
• Berkeley Digital Seismic Network (BDSN, BK) (11)
• Bugs (6)
• Calpine/LBL Geysers data (BG) (8)
• Catalogs (21)
• Data Access Methods (19)
• Data Availability (32)
• Data Center Operations (26)
• Data Center Outages (9)
• Data Distribution (3)
• Data Holdings (16)
• Earthquake Catalogue (21)
• Earthquake Depths (3)
• Earthquake Locations (9)
• High Resolution Seismic Network (HRSN, BP) (4)
• Magnitude (10)
• Magnitude Errors (4)
• Metadata (4)
• Northern California Earthquake Data Center (NCEDC) (14)
• Northern California Seismic System (NCSS) (7)
• Northern Hayward Fault Network (NHFN, BK) (3)
• SEED format (6)
• Sampling Rate (3)
• Strain Data (3)
• The Geysers (5)
• Timing Errors (3)
• U.S. Geological Survey (USGS) (3)
• UC Berkeley Seismological Laboratory (BSL) (4)
• USGS Northern California Seismic Network (NCSN) (11)
• Uncategorized (4)
• Waveform Data (33)
• Web Services (5)

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