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class="skip-container cf"> <a class="skip-link screen-reader-text focusable" href="index.html#content">↓ Skip to Main Content</a> </div> <div id="header"> <div id="logo"> <a href="index.html"><img src="wp-content/uploads/SCSN logo 2021_header_2.png" width="120" height="130" alt="SCSN"/></a> </div> <div id="top-widget" class="top-widget"> <div id="text-7" class="widget_text"> <div class="textwidget"><p style="vertical-align: baseline; line-height: normal; font-family: 'Lato', sans-serif; font-weight: 400; position: relative; top: 45px;">For data archive<br /> access visit<br /> <a style="color: #ff6d1e; text-decoration: #ff6d1e; text-decoration-color: #ff6d1e; text-decoration-style: solid; font-family: 'Lato', sans-serif; font-weight: 800; font-size: 2.5em; line-height: 100%;" href="https://scedc.caltech.edu/" target="blank">SCEDC</a></p> </div> </div> </div> <div class="main-nav"><ul class="menu"><li class="current_page_item"><a href="index.html">Home</a></li><li class="page_item page-item-26 page_item_has_children"><a href="index.php/earthquakes/index.html">Earthquakes</a><ul class='children'><li class="page_item page-item-1138"><a href="index.php/earthquakes/latest-earthquake-information/index.html">Latest Earthquake Information</a></li><li class="page_item page-item-1877 page_item_has_children"><a href="index.php/earthquakes/live-seismogram-feed/index.html">Live Seismograms Feed</a><ul class='children'><li class="page_item page-item-2024"><a href="index.php/earthquakes/live-seismogram-feed/live-seismograms-feed-what-am-i-seeing/index.html">Live Seismograms Feed – What am I seeing?</a></li></ul></li><li class="page_item page-item-4700 page_item_has_children"><a href="index.php/earthquakes/live-das-stream/index.html">Live DAS Stream</a><ul class='children'><li class="page_item page-item-4712"><a href="index.php/live-das-stream-what-am-i-seeing/index.html">Live DAS Stream – What am I seeing?</a></li></ul></li><li class="page_item page-item-1750"><a 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class="page_item page-item-1188"><a href="index.php/seismologists-tools/acknowledge-the-scsn/index.html">Acknowledgment Policy</a></li></ul></li><li class="page_item page-item-39 page_item_has_children"><a href="index.php/education-outreach-2/index.html">Education & Outreach</a><ul class='children'><li class="page_item page-item-76"><a href="index.php/education-outreach-2/faq/index.html">FAQ</a></li><li class="page_item page-item-1938 page_item_has_children"><a href="index.php/education-outreach-2/understanding-waveforms/index.html">Understanding Waveforms</a><ul class='children'><li class="page_item page-item-1958"><a href="index.php/education-outreach-2/understanding-waveforms/local-earthquakes/index.html">Local Earthquakes</a></li><li class="page_item page-item-1964"><a href="index.php/education-outreach-2/understanding-waveforms/quarry-blasts/index.html">Quarry Blasts</a></li><li class="page_item page-item-1968"><a href="index.php/education-outreach-2/understanding-waveforms/teleseismic-event/index.html">Teleseismic Events</a></li><li class="page_item page-item-1974"><a href="index.php/education-outreach-2/understanding-waveforms/sonic-boom/index.html">Sonic Booms</a></li><li class="page_item page-item-4195"><a href="index.php/education-outreach-2/understanding-waveforms/rocket-launch/index.html">Rocket Launches</a></li><li class="page_item page-item-1946"><a href="index.php/education-outreach-2/understanding-waveforms/military-training-artillery-fire/index.html">Military Training: Artillery Fire</a></li><li class="page_item page-item-1350"><a href="index.php/education-outreach-2/understanding-waveforms/nevada-nuclear-testing/index.html">Nevada Nuclear Testing</a></li></ul></li><li class="page_item page-item-4726"><a href="index.php/education-outreach-2/understanding-das-data/index.html">Understanding DAS Data</a></li><li class="page_item page-item-4282"><a href="index.php/education-outreach-2/documenting-earthquakes-virtual-exhibit/index.html">Documenting Earthquakes Virtual Exhibit</a></li><li class="page_item page-item-82"><a href="index.php/education-outreach-2/seismology-101/index.html">Seismology 101</a></li><li class="page_item page-item-88"><a href="index.php/education-outreach-2/history-of-seismology/index.html">Brief History of Seismology</a></li><li class="page_item page-item-78"><a href="index.php/education-outreach-2/seismo-lab-tours/index.html">Caltech Seismo Lab Tours</a></li></ul></li><li class="page_item page-item-43 page_item_has_children"><a href="index.php/partnerships-resources/index.html">Partnerships & Resources</a><ul class='children'><li class="page_item page-item-4332"><a href="index.php/partnerships-resources/shakealert-earthquake-early-warning-system/index.html">Earthquake Early Warning system</a></li><li class="page_item page-item-1624 page_item_has_children"><a href="caltech-era/index.html">Earthquake Research Affiliates (ERA)</a><ul class='children'><li class="page_item page-item-1671"><a href="caltech-era/era-members/index.html">ERA Members</a></li><li class="page_item page-item-1655"><a href="caltech-era/era-staff/index.html">ERA Staff</a></li><li class="page_item page-item-1682"><a href="caltech-era/era-contact-us/index.html">ERA Contact Us</a></li></ul></li><li class="page_item page-item-760"><a href="index.php/contact/media-relations-contact/index.html">Media Resources</a></li></ul></li><li class="page_item page-item-8 page_item_has_children"><a href="index.php/scsn/index.html">About SCSN</a><ul class='children'><li class="page_item page-item-3994"><a href="index.php/scsn/scedc/index.html">SCEDC and SCSN</a></li><li class="page_item page-item-92"><a href="index.php/scsn/history/index.html">History</a></li><li class="page_item page-item-4150"><a href="index.php/scsn/employment-opportunities/index.html">Employment Opportunities</a></li></ul></li><li class="page_item page-item-48 page_item_has_children"><a href="index.php/contact/index.html">Meet our Team</a><ul class='children'><li class="page_item page-item-1512"><a href="index.php/contact/contact-us-2/index.html">Contact Us</a></li><li class="page_item page-item-2625"><a href="index.php/contact/media-relations-contact-2/index.html">Media Relations</a></li></ul></li></ul></div> </div> <div id="wrapper" class="clearfix"> <div id="content" class="grid-right col-620 fit"> <div id="post-23" class="post-23 page type-page status-publish hentry"> <div class="post-entry">     <span class="popup" style="position:absolute; TOP:3px;Left:5px;" onclick="myFunction(this)" title="Click for more info"><img src="wp-content/uploads/info.png" alt="Click for more info" height="16" width="16"><span style="width:190px" class="popuptext" id="myPopup" title="Click to close"><p>These info buttons can be found throughout SCSN.org. Clicking on one will open a small window containing information pertinent to the element closest to the button.</p> <p><b>Click anywhere within the information window to close.</b></p></span></span><span style="position:absolute; TOP:4px;Left:23px;">◄<small><b>Click for more info</b></small></span>  <h3>Recent Earthquake Activity <span class="popup" onclick="myFunction(this)" title="Click for more info"><img src="wp-content/uploads/info.png" alt="Click for more info"><span class="popuptext" id="myPopup" title="Click to close"><p>Use the map below to explore recent earthquake activity. This map shows the earthquake feed from the <b><a href="https://earthquake.usgs.gov/earthquakes/feed/v1.0/geojson.php" target=_blank><span title="">USGS<span></a></b> for all earthquakes in the last 7 days within the SCSN reporting region.</p> <p>Expand the left sidebar to view the event listing; selecting an event will highlight its map location. Once selected, for further information, clicking an event ID (e.g. ci38354200) link will take you to the USGS page for that event.</p> <p>Events are color-scaled by the time they occurred (red: within 1 hour; blue: within 1 day; yellow: within 7 days; grey: older) and size-scaled by their magnitude, as represented in the legend below.</p> <p>The map updates every 5 minutes with the most recent earthquake data available, the same refresh rate as the USGS earthquake feed.</p> <p><i><b>Please note that not all earthquake information displayed on this map may have been reviewed by a seismologist, and automated solutions are likely to be updated.</b></i></p></span></span></h3>    <div id="map_rteq"><div id="sidebar" class="sidebar collapsed"><div class="sidebar-tabs"><ul role="tablist"><li><a href="#home" role="tab"><i class="fa fa-bars"></i></a></li></ul></div><div class="sidebar-content"><div class="sidebar-pane" id="home"><h1 class="sidebar-header">sidebar-v2<span>class="sidebar-close"><i class="fa fa-caret-left"></i></span></h1></div></div></div></div> <div id="map_rtlegend"></div>   <script type="text/javascript">initmap("rtrss", {'nets': ['ci'], 'urlTarget': 'usgs'})</script> <script type="text/javascript">refreshEqMap()</script>      <h5>Fast facts</h5>  <div class="fast_facts"> <table class="fast_facts"> <tr class="fast_facts"><th class="fast_facts_header"><span class="popup" onclick="myFunction(this)" title="Click for more info"><img src="wp-content/uploads/infow.png" alt="Click for more info"><span class="popuptext" id="myPopup" title="Click to close"><p>Statistics are computed at the end of each day <b><a href="https://www.usgs.gov/faqs/what-utc-and-why-don-t-you-report-earthquakes-local-time-where-earthquake-occurred?qt-news_science_products=0#qt-news_science_products" target=_blank ><span title="">UTC</span></a></b> (4pm PST, 5pm PDT) for the preceding 24 hour period and the preceding 7 day period. Numeric links will open SCEDC webpages for more catalog information, and DYFI Report links will open USGS webpages with Did You Feel It? felt report information.</p> <p>For archived weekly (Thursday to Thursday) and monthly report plots with interactive faults shown, go to the <b><a href="index.php/earthquakes/weekly-report-plots.html"><span title="">Weekly Report Plots</span></a></b> and <b><a href="index.php/earthquakes/monthly-report-plots.html"><span title="">Monthly Report Plots</span></a></b> pages.</p></span></span></th><th class="fast_facts_header" style="background-color: #ff6e1e; " ><b>24 hours</b></th><th class="fast_facts_header" style="background-color: #005851; "><b>7 days</b></th></tr> <tr class="fast_facts"><td class="fast_facts_header">Date range:</td><td class="fast_facts">26 Nov 2024 UTC</td><td class="fast_facts">20 Nov 2024 to 26 Nov 2024 UTC</td></tr> <tr class="fast_facts"><td class="fast_facts_header">Number of events:</td><td class="fast_facts"><a class="fast_facts" href="http://service.scedc.caltech.edu/cgi-bin/catalog/catalog_search.pl?outputfmt=simpson&start_year=2024&start_month=11&start_day=26&start_hr=00&start_min=00&start_sec=00&end_year=2024&end_month=11&end_day=26&end_hr=23&end_min=59&end_sec=59&min_mag=-9.0&max_mag=9.0&min_depth=-10.0&max_depth=700.0&south_latd=30.0&north_latd=39.0&west_long=-124.0&east_long=-111.0&etype=eq&gtype=l&file_out=N" target="_blank">34</a></td><td class="fast_facts"><a class="fast_facts" href="http://service.scedc.caltech.edu/cgi-bin/catalog/catalog_search.pl?outputfmt=simpson&start_year=2024&start_month=11&start_day=20&start_hr=00&start_min=00&start_sec=00&end_year=2024&end_month=11&end_day=26&end_hr=23&end_min=59&end_sec=59&min_mag=-9.0&max_mag=9.0&min_depth=-10.0&max_depth=700.0&south_latd=30.0&north_latd=39.0&west_long=-124.0&east_long=-111.0&etype=eq&gtype=l&file_out=N" target="_blank">258</a></td></tr> <tr class="fast_facts"><td class="fast_facts_header">Magnitude range:</td><td class="fast_facts">-0.12 - 2.70</td><td class="fast_facts">-0.18 - 3.65</td></tr> <tr class="fast_facts"><td class="fast_facts_header">Events M ≥ 2.0:</td><td class="fast_facts"><a class="fast_facts" href="http://service.scedc.caltech.edu/cgi-bin/catalog/catalog_search.pl?outputfmt=simpson&start_year=2024&start_month=11&start_day=26&start_hr=00&start_min=00&start_sec=00&end_year=2024&end_month=11&end_day=26&end_hr=23&end_min=59&end_sec=59&min_mag=2.0&max_mag=9.0&min_depth=-10.0&max_depth=700.0&south_latd=30.0&north_latd=39.0&west_long=-124.0&east_long=-111.0&etype=eq&gtype=l&file_out=N" target="_blank">7</a></td><td class="fast_facts"><a class="fast_facts" href="http://service.scedc.caltech.edu/cgi-bin/catalog/catalog_search.pl?outputfmt=simpson&start_year=2024&start_month=11&start_day=20&start_hr=00&start_min=00&start_sec=00&end_year=2024&end_month=11&end_day=26&end_hr=23&end_min=59&end_sec=59&min_mag=2.0&max_mag=9.0&min_depth=-10.0&max_depth=700.0&south_latd=30.0&north_latd=39.0&west_long=-124.0&east_long=-111.0&etype=eq&gtype=l&file_out=N" target="_blank">27</a></td></tr> <tr class="fast_facts"><td class="fast_facts_header">Felt Reports:</td><td class="fast_facts"><a class="fast_facts" href="http://earthquake.usgs.gov/earthquakes/map/#{%22feed%22%3A%221461937277175%22%2C%22search%22%3A{%22id%22%3A%221461937277175%22%2C%22name%22%3A%22Search%20Results%22%2C%22isSearch%22%3Atrue%2C%22params%22%3A{%22starttime%22%3A%222024-11-26%2000%3A00%3A00%22%2C%22endtime%22%3A%222024-11-26%2023%3A59%3A59%22%2C%22catalog%22%3A%22ci%22%2C%22producttype%22%3A%22dyfi%22%2C%22orderby%22%3A%22time%22}}%2C%22listFormat%22%3A%22dyfi%22%2C%22sort%22%3A%22newest%22%2C%22basemap%22%3A%22grayscale%22%2C%22autoUpdate%22%3Afalse%2C%22restrictListToMap%22%3Atrue%2C%22timeZone%22%3A%22utc%22%2C%22mapposition%22%3A[[30.477082932837682%2C-122.310791015625]%2C[40.07807142745009%2C-112.467041015625]]%2C%22overlays%22%3A{%22plates%22%3Atrue}%2C%22viewModes%22%3A{%22map%22%3Atrue%2C%22list%22%3Atrue%2C%22settings%22%3Atrue%2C%22help%22%3Afalse}}" target="_blank">DYFI Reports </a></td><td class="fast_facts"><a class="fast_facts" href="http://earthquake.usgs.gov/earthquakes/map/#{%22feed%22%3A%221461937277175%22%2C%22search%22%3A{%22id%22%3A%221461937277175%22%2C%22name%22%3A%22Search%20Results%22%2C%22isSearch%22%3Atrue%2C%22params%22%3A{%22starttime%22%3A%222024-11-20%2000%3A00%3A00%22%2C%22endtime%22%3A%222024-11-26%2023%3A59%3A59%22%2C%22catalog%22%3A%22ci%22%2C%22producttype%22%3A%22dyfi%22%2C%22orderby%22%3A%22time%22}}%2C%22listFormat%22%3A%22dyfi%22%2C%22sort%22%3A%22newest%22%2C%22basemap%22%3A%22grayscale%22%2C%22autoUpdate%22%3Afalse%2C%22restrictListToMap%22%3Atrue%2C%22timeZone%22%3A%22utc%22%2C%22mapposition%22%3A[[30.477082932837682%2C-122.310791015625]%2C[40.07807142745009%2C-112.467041015625]]%2C%22overlays%22%3A{%22plates%22%3Atrue}%2C%22viewModes%22%3A{%22map%22%3Atrue%2C%22list%22%3Atrue%2C%22settings%22%3Atrue%2C%22help%22%3Afalse}}" target="_blank">DYFI Reports </a></td></tr> </table> </div> <h5>Weekly Playback Map <span class="popup" onclick="myFunction(this)" title="Click for more info"><img src="wp-content/uploads/info.png" alt="Click for more info"><span class="popuptext" id="myPopup" title="Click to close"><p>The map below can be used to replay the earthquake sequence from the last week.</p> <p>Events are shown in 4-hour intervals, and are color and size-scaled by the magnitude (blue is smallest, red is largest). Faults from the <a href="https://www.usgs.gov/programs/earthquake-hazards/faults" target=_blank><span title="">USGS recent fault database</span></a> are shown as grey lines.</p> <p><em>N.B. loading a week with a high number of events may take some time to complete.</em></p></span></span></h5>  <div id="pbmap"></div> <div id="pb_legend"></div> <script type="text/javascript">eq_time_map("home")</script> <h5>Earthquake activity through time <span class="popup" onclick="myFunction(this)" title="Click for more info"><img src="wp-content/uploads/info.png" alt="Click for more info"><span class="popuptext" id="myPopup" title="Click to close"><p>The plots below show alternate views of seismicity at both weekly and monthly periods.</p> <p>For additional long term earthquake information go to the <b><a href="index.php/earthquakes/weekly-report-plots.html"><span title="">Weekly Report Plots</span></a></b> and <b><a href="index.php/earthquakes/monthly-report-plots.html"><span title="">Monthly Report Plots</span></a></b> pages.</p><ul><li>The top plot shows the total number of earthquakes recorded per day (UTC) below different magnitude thresholds. The number varies depending on the detection capabilities of the network and seismic activity levels. Swarms or aftershock sequences can cause spikes in the daily rate.</li><li>The bottom plot shows the earthquakes recorded per day (UTC) as magnitude against time for the previous 7 days. Events can be matched to their corresponding listing in the map above to view locations as well as additional technical information.</li></ul></span></span></h5>   <div id="line_canvas"></div> </br>   <div id="chart_canvas"></div> <p> </ul> </li> </ul> </div>  <div class="post-edit"></div> </div> </div> <div id="widgets" class="grid-right col-300 rtl-fit" role="complementary"> <div id="text-6" class="widget-wrapper widget_text"> <div class="textwidget"><ul class="widglist" style="list-style-type: none; margin: 0; padding: 0; width: 240px; border-radius: 16px; background-color: #424242;"> <li><a class="active" style="background-color: #ff6e1e; padding: 8px 16px; display: block; color: white; border-radius: 16px;">Recent Earthquake Updates</a></li> <li><a class="widglist" style="display: block; color: #fff; padding: 8px 16px; text-decoration: none;" href="index.php/earthquakes/latest-earthquake-information/index.html">Latest Earthquake Information</a></li> <li><a class="widglist" style="display: block; 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Messages are only sent for events larger than M2.75.<br /> Results are subject to change or deletion.</p> </div> </div> </div><div id="text-4" class="widget-wrapper widget_text"> <div class="textwidget"><p><b><a href="https://earthquake.usgs.gov/earthquakes/map/" target="_blank" rel="noopener noreferrer">Click here to view earthquakes OUTSIDE Southern California.</a></b></p> <p><b><a href="index.php/contact/media-relations-contact/index.html">Click here to contact Media Relations and utilize our Media Resources.</a></b></p> </div> </div><div id="text-5" class="widget-wrapper widget_text"> <div class="textwidget"><div style="text-align: center;"> <h5><span style="color: #005851;">Acknowledge the SCSN</span></h5> </div> <p><span style="font-size: small;"><b>Citation:</b><br /> “California Institute of Technology (Caltech) (1926): Southern California Seismic Network. International Federation of Digital Seismograph Networks. 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