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The Earthquake Notification Service (ENS) is a free service that can send you automated notification emails when earthquakes happen in your area. (Example of an ENS notification email) New accounts default to receiving notifications about earthquakes with magnitude 6.0 or greater however you can customize ENS to only deliver messages for. Sensing the recent most unsafeness in several regions of North India, California or any other part of the world, we bring you the top 5 free earthquake alert apps for your safety. Considering various OS platforms, we are presenting the ‘Top 5’ list in an ascending order from least to most recommendable.

Principle | Present contributions | FAQ

Principle

EMSC collects real time parametric data (source parmaters and phase pickings) provided by 70 seismological networks of the Euro-Med region. These data are provided to the EMSC either by email or via PDL (Product Distribution Layer). The collected data are automatically archived in a database, made available via an autoDRM, and displayed on the web site. The collected data are automatically merged to produce automatic locations which are sent to several seismological institutes in order to perform quick moment tensors determination.
For potentially destructive earthquakes, the EMSC operates an Earthquake Notification Service in which email/SMS/fax are disseminated to the registered end-users within 20-30 minutes on average after the earthquake occurrence. This service is free and registration is available here. The real time information services are purely automatic and deals with all events reported by the data contributors while the Earthquake Notification Service is a manual one, where the email/SMS notifications are disseminated by a seismologist on call to the end-users. The way the real time information services work is described in details in the following document:

  • Report on EMSC Real Time Earthquake Information services in 2015.

Present contributions

  • 70 contributing networks
  • Corresponding to more than 2,500 seismic stations
  • More than 40,000 events published per year

CodeInstituteCountryCity
AEArizona Broadband Seismic Network, Arizona Geological SurveyUSA
AGArkansas Seismic Network, Arkansas Geological SurveyUSA
AKAlaska Regional Network, University of Alaska-FairbanksUSA
AOArkansas Seismic Observatory, University of Arkansas at Little RockUSA
ARNorthern Arizona Network, Arizona Earthquake Information CenterUSA
ATAlaska Tsunami Warning Seismic System, West Coast and Alaska Tsunami Warning CenterUSA
AUSTGeoscience Australia, Canberra, ACT, AustraliaAustraliaCanberra
AVAlaska Volcano Observatory, USGS - Anchorage, University of Alaska, Geophysical InstituteUSA
AYITHaiti
AZANZA Regional Network, University of California, San Diego - USGS Menlo ParkUSA
BEOSeismological Survey of SerbiaSerbiaBelgrad
BERUniversity of BergenNorwayBergen
BGRBundesanstalt fur Geowissenschaften und Rohstoffe, German Regional Seismograph NetworkGermanyHannover
BGSBritish Geological SurveyUnited KingdomEdinburgh
BGSGBritish Geological Survey (Global Network)United KingdomEdinburgh
BKBerkeley Digital Seismic Network (BDSN)USA
BRAEarth Science Institute, Slovak Academy of Sciences, Department of SeismologySlovakiaBratislava
BRGMBureau de Recherches Géologiques et MinièresFranceOrléans
BUCNational Institute for Earth PhysicsRomaniaBucharest
BUDMTA CSFK GGI Kövesligethy Radó Seismological ObservatoryHungaryBudapest
CCCascade Chain Volcano Monitoring, USGS/Cascade Volcano ObservatoryUSA
CECalifornia Strong Motion Instrumentation Program, California Geological Survey - Earthquake EngineeringUSA
CGCoso Microearthquake Network, Geothermal Program Office, US Navy, China LakeUSA
CISouthern California Seismic Network, California Institute of Technology / USGS - PasadenaUSA
CNCanadian National Seismic Network (CNSN) BB stationsCanadaOttawa
CNRMCentre National de la Recherche Scientifique et TechniqueMoroccoRabat
COSouth Carolina Seismic Network, University of South Carolina at ColumbiaUSA
CRAACentre de Recherche en Astronomie, Astrophysique et GéophysiqueAlgeriaAlgiers
CSLCEMSC - CSLOC (Experimental service)FranceArpajon
CUCariUSGS Caribbean Network, USGS, Albuquerque Seismological LaboratoryUSA
CWBCentral Weather BureauChinese Taipei
CYPGeological Survey DepartmentCyprusNicosia
DDADisaster and Emergency Management Presidency, Earthquake Department (AFAD)TurkeyAnkara
DHMRNational Seismological Observatory CenterYemenDhamar
DJABadan Meteorologi, Klimatologi dan GeofisikaIndonesiaJakarta
DJIObservatoire Géophysique d'ArtaDjiboutiDjibouti
DSNDubai Seismic NetworkDubaiDubai Municipality
EPUTEP Seismic Network, University of Texas, El PasoUSA
ETCERI Southern Appalachian Seismic Network, University of MemphisUSA
GFUGeophysical Institute of the Academy of SciencesCzech RepublicPrague
GFZGeoForschungsZentrum (GFZ)GermanyPotsdam
GIIGeophysical Institute of Israel, Seismology DivisionIsraelTel Aviv
GNSGeonet, GNS scienceNew Zealand Avalon
GRALNational Center for Geophysical ResearchLebannonBeirut
GSRCGeophysical Survey of the Russian Academy of SciencesRussiaObninsk
GUCDepartamento de Geofísica, Universidad de ChileChileSantiago
HSNCTechnological Educational Institute of Crete, Seismological Network of CreteGreeceChania
HVHawaiian Volcano Observatory Network, Hawaiian Volcano ObservatoryUSA
HWHanford Washington Seismic Network, Pacific Northwest National LaboratoryUSA
ICCInstituto Cartografic i Geologic de CatalunyaSpainBarcelona
IEIdaho National Engineering Laboratory, University of Utah, Network ContactUSA
IGCUniversidad de PanamaPanama
IGUTInstitute of Geophysics, University of TehranIranTehran
IIIRIS/IDA Network, University of California, Scripps Institute of OceanographyUSA
IMODepartment of Geophysics, Icelandic Meteorological OfficeIcelandReykjavik
IMPInstituto Português do Mar e da AtmosferaPortugalLisbon
INETInstituto Nicaraguense de Estudios TerritorialesNicaragua
INGVInstituto Nazionale di Geofisica e VulcanologiaItalyRoma
INMTInstitut National de MétéorologieTunisiaTunis
INSNIrish National Seismic NetworkIrelandDublin
IPECInstitute of Physics of the EarthCzechBrno
ISNIraqi Meteorological Organisation and Seismology, Seismological DepartmentIraqBaghdad
IUIRIS/USGS Network, USGS Albuquerque Seismological LaboratoryUSA
IWIntermountain West Seismic Network, United States Geological SurveyUSA
JMAJapan Meteorological Agency Seismic NetworkJapan
KANKandilli Observatory and Earthquake Research InstituteTurkeyIstanbul
KISKyrgyz Institute of Seismology, KIS (KIS)Kyrgyzstan
KNMIKoninklijk Nederlands Meteorologish InstituutThe NetherlandsDe Bilt
KYKentucky Seismic and Strong Motion Network, Kentucky Geological SurveyUSA
LBLeo Brady Network, Sandia National LaboratoryUSA
LDLamont-Doherty Cooperative Seismographic Network, Lamont-Doherty Earth Observatory of Columbia UniversityUSA
LDGLaboratoire de Détection et de GéophysiqueFranceBruyères-le-Châtel
LEDLandsamt für Geologie, Rohstoffe und BergbauGermanyBaden Wuerttemberg
LIMInstituto Geofísico del PerúPerúLima
LJUAgencija Republike Slovenije za okolje, Seismological OfficeSloveniaLjubljana
LVVCarpathian Seismological Department, Ukraine Academy of ScienceUkraineLviv
MADInstituto Geografico NacionalSpainMadrid
MBMontana Regional Seismic Network, Montana Bureau of Mines and GeologyUSA
MCSMUkrainian NDC, Main Center of Special MonitoringUkraineKiev
MLTMalta Seismic Network, Seismic Monitoring and Research Unit (SMRU), University of MaltaMaltaMsida
MNSNMalaysian Meteorological Department, Petaling Jaya, Selangor, MalaysiaMalaysiaPetaling Jaya
MOLDInstitute of Geophysics and GeologyMoldovaChisinau
MONDirection de l'Environnement, de l'Urbanisme et de la ConstructionMonacoMonaco
MSOMontenegro Seismological ObservatoryMontenegroPodgorica
NCUSGS Northern California Regional Network, USGS-Menlo Park, CaliforniaUSA
NCMSNational Center of Meteorology and SeismologyUnited Arab EmiratesAbu Dhabi
NDIIndia Meteorological Department, New Delhi, IndiaIndiaNew Delhi
NENortheastern United States Networks, Boston CollegeUSA
NEICNational Earthquake Information Center, U.S. Geological SurveyUSAGolden
NEWSNorwegian Seismic ArrayNorwayKjeller
NMCooperative New Madrid Seismic Network, St. Louis University and University of MemphisUSA
NNWestern Great Basin/Eastern Sierra Nevada, University of Nevada, RenoUSA
NNCKazakhstan National Data CenterKazakhstanAlmaty
NOANational Observatory of Athens, Geodynamic InstituteGreeceAthens
NORNorwegian Seismic ArrayNorwayKjeller
NPUnited States National Strong-Motion Network, USGS - National Strong-Motion ProgramUSA
NQNetQuakes, USGS Menlo Park, CaliforniaUSA
NRIANational Research Institute of Astronomy and GeophysicsEgyptCairo
NSCNational Seismological Centre, Department of Mines and GeologyNepalKathmandu
NSNAInstituto Nacional de Prevención Sísmica (INPRES)Argentina
NSSCNational Syrian Seismological CentreSyriaDamas
NSSPNational Survey of Seismic ProtectionArmeniaYerevan
OCAGéoAzur, Université de Nice Sophia-Antipolis, Valbonne, FranceFrance
ODCORFEUS Data CenterNetherlandsDe Bilt
OGSIstituto Nazionale di Oceanografia e di Geofisica SperimentaleItalyTrieste
OHOhio Seismic Network, Ohio Geological SurveyUSA
OKOklahoma Seismic Network, University of OklahomaUSA
OMANEarthquake Monitoring Center of Oman , Sultan Qaboos UniversityOmanMuscat
PDAInstituto Português do Mar e AtmosferaPortugalAzores Delegation
PEPenn State Network, Penn State UniversityUSA
PGPacific Gas and Electric, Diablo Canyon, California, USAUSA
PIVSPhilippine Inst. of Volcanology and Seismology, Quezon City, PhilippinesPhilippinesManila
PRPuerto Rico Seismic Network (PRSN) and Puerto Rico Strong Motion Program (PRSMP), University of Puerto Rico at MayaguezUSA
PTPacific Tsunami Warning Seismic System, Pacific Tsunami Warning Center, Ewa Beach, HawaiiUSA
QUIEscuela Politécnica Nacional, Quito, EcuadorEcuadorQuito
REUS Bureau of Reclamation Seismic Networks, US Bureau of Reclamation, Denver Federal CenterUSA
RNSRéseau National de Surveillance SismiqueFranceStrasbourg
RSBRRede Sismografica BrasileiraBrazilSao Paulo
RSNCRed Sísmica Nacional de Colombia, INGEOMINAS, Bogotá, ColombiaColombiaBogotá
RSSCRepublican Seismic Survey Center or Azerbaijan National Academy of SciencesAzerbaidjanBaku
SASNSouth African Seismological NetworkSouth AfricaPretoria
SCNew Mexico Tech Seismic Network, New Mexico Tech, Socorro, New MexicoUSA
SESoutheastern Appalachian Cooperative Seismic Network, Virginia Tech, University of Memphis, Tennessee Valley Authority, and University of North CarolinaUSA
SEDSwiss Seismological ServiceSwitzerlandZürich
SEOKorean Meteorological AdministrationSouth KoreaSeoul
SFSan Andreas Fault Observatory at Depth (SAFOD), Stanford University and USGS Menlo Park, Earthscope ProjectUSA
SGSSaudian National Seismological NetworkSaudi ArabiaRiyad
SIKSeismological Institute of Kosovo/UNMIKKosovo/UNMIKPristina
SKOSeismological ObservatoryFYROMSkopje
SNETServicio Nacional de Estudios Territoriales (SNET El Salvador)El Salvador
SNSNUppsala Seismic NetworkSwedenUppsala
SOFNational Institute in Geophysics, Geodesy and Geography - BASBulgariaSofia
SORSRepublic Hydrometeorological InstituteBosnia-HerzogovinaBanja Luka
SPGMDepartement des Sciences de la TerreMoroccoRabat
THEAristotle University of Thessaloniki, Department of GeophysicsGreeceThessaloniki
THRInternational Institute for Earthquake Engineering and SeismologyIranTehran
TIFSeismic Monitoring Centre of GeorgiaGeorgiaTbilisi
TIRInstitute of Geosciences, Energy, Water and EnvironmentAlbaniaTirana
TRNUniversity of the West Indies, St. Augustine, TrinidadTrinidad and TobagoSt. Augustine
TSBThailand Seismological BureauThailand
UASDUniversidad Autonoma de Santo DomingoSanto domingo
UCCRoyal Observatory of BelgiumBelgiumBrussels
UCRSeccion de Sismología, Univ. de Costa Rica, San José, Costa RicaCosta-RicaSan José
UNMServicio Sismologico Nacional, Instituto de Geofísica, UNAMMexicoMexico City
UOUniversity of Oregon Regional Network, University of OregonUSA
UPSLUniversity of Patras Seismological LaboratoryGreecePatras
USUS National Seismic Network, ANSS Backbone of the USGS-NEIC and USGS-ASL and Earthscope Project of IRISUSAGolden
UUUniversity of Utah Regional Network, University of Utah Seismograph StationsUSA
UWPacific Northwest Regional Seismic Network, University of Washington, SeattleUSA
UZBKInstitute of Seismology, Uzbekistan Academy of SciencesUzbekistanTashkent
VAOInst. de Astron., Geof. e Ciências Atmos., Univ. de São Paulo, BrazilBrazil
VENFundación Venezolana de Investigaciones SismológicasVenezuelaCaracas
WARWarsaw seismic networkPolandWarsaw
WRCalifornia Division of Water Resources, California Division of Water ResourcesUSA
WYYellowstone Volcano Observatory Seismic Network, University of Utah Seismograph StationsUSA
ZAGSeismological Survey, University of ZagrebCroatiaZagreb
ZAMGZentralAnstalt für Meteorologie und GeodynamikAustriaVienna

Frequently Asked Questions (for data contributors)


Which type of data should be sent?
  • Parametric data i.e. source parameters (origin time, epicenter coordinates, hypocentral depth, magnitude) and arrival times (station code, phase picking, calibrated amplitude/period).
  • Groups of phases (without associated location) can be highly valuable and should be sent too.
  • Moment tensors and/or focal mechanisms.
  • Field observations after a significant earthquake.
  • Rapidity is critical to ensure real time characteristic of the information and to allow the rapid dissemination of alert messages (alert messages are generally disseminated within 20-30 minutes of the earthquake occurrence).
  • Good station coverage is critical to ensure reliable location. Then, contributions from stations close to the epicentre, and/or which significantly improve the station coverage (e.g. offshore seismicity) are extremely valuable even if only available several hours after the event occurrence.
  • In practice, networks with no automatic processing capacities are invited to systematically send their data, as soon as possible. In case of significant (M > 4.0-4.5) and/or felt earthquake, their data can be essential to determine accurate source parameters.
How must a data contributor provide real time data ?
  • Via email: sent to a specific email adress.
  • or Via QWIDS: the Quake Watch Information Distribution System allows quick, robust and secure data echange. Please contact for more information
  • with the following recommandations:
    • - Data message must be sent in ascii (text) format. Not in html or enriched text.
      - The data must be included in the body of the message. No .doc, no .xls.
      - The data provider can use any text format but its data must then always be formatted in the same format because all the data are processed automatically. Any modification of the format must be notified to EMSC several days before.
      - One message must contain the data of only one earthquake.
  • Messages related to events with magnitude lower than 2 are not displayed by the Real Time System (they are however archived in the database). The selection being made automatically at EMSC, contributors should not bother on this aspect.
Is there a time limit to send data contribution?
  • The quicker the contribution, the better; nevertheless there is no time limit. In practice, except for most significant earthquakes for which a final revised location may be re-computed 2 to 3 days after the event occurrence, data contributions are more valuable if sent within 24 hours. Indeed, since May 2005, EMSC systematically reviews all Euro-Med events (as far as they are reported by 2 different networks) regardless of their magnitude, on the working day following their occurrences. This manual review has 2 objectives:
    • To avoid that inaccurate or erroneous hypocentral solutions resulting from automatic locations tools stay on the web page.
    • To define a preliminary bulletin within a few days delay which will be used as an help to compute the Euro-Med Bulletin.
  • Data can be both manual and automatic
  • A manual pick automatically replace the automatic one for the same station and same phase, therefore a manual message can be sent by the same network to update a manual one.

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Is data redundancy a problem?
  • No. Receiving data for the same station from different networks improve reliability of the system in case of technical failure of a contributor. In practice, when available a manual pick replaces the automatic one. If only automatic picks are available, the one with the smallest residual is kept in the real time system, and, for the alert system, the choice is made by the seismologist on duty.
What are the main technical specifications a contributor should follow?

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  • Define the procedures before sending any parametric data contributions (contact ).
  • Keep the same ASCII format (otherwise the parser will fail and the data won't be integrated). No attachment, no .doc, .xls, .html files.
  • Systematically send the data to both and . Indeed, IGN (Spain) runs back-up procedures for EMSC and takes over the duty for the alert system in case of technical problem or maintenance activities at EMSC.
  • Always send the data from the same identified email accounts (parsers are associated to email specific addresses).
  • Ensure that the stations are registered in the International Registry. EMSC can help you on this matter.
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  • All the data EMSC receives are archived immediately in a database and available by autoDRM (in GSE2.0 format). If interested please contact
  • The automatic locations (MIX, see Figure 1) are disseminated by email 65 minutes after the earthquake occurrence. The 65 minutes delay ensures the stability of the solution as the vast majority of the data are then available. Nevertheless, these solutions are purely automatic and may be erroneous. If interested please contact
  • More generally, if EMSC can provide a useful specific service for its members and/or data contributors, we will be happy to help!
What type of data can be included in a special report?

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  • All the data which can be of interest for the seismological community and/or the public: tectonic setting, historical seismicity, field report, testimony on the effects or links to your own dedicated pages. Do not hesitate to ask us to open new pages.
  • All contributions should be sent to , and .




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