Light magnitude 3.9 earthquake at 0 km depth24 Apr 19:33 UTC: First to report: EMSC after 4 minutes.24 Apr 19:33: Now using data updates from USGSI didn't feel itI felt this quakeEarthquake detailsDate & timeApr 24, 2026 19:29:55 UTC - Local time at epicenterFriday, Apr 24, 2026, at 07:29 pm (Universal Time GMT +0)StatusconfirmedMagnitude3.91Depth0.5 kmEpicenter latitude / longitude40.3655°N / 125.063°WCalifornia, United StatesSeismic antipode40.3655°S / 54.937°EShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceUSGS (United States Geological Survey)Nearest volcanoEscanaba Segment (217 km / 135 mi)Estimated seismic energy released4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) | equivalent to ONE quake of magnitude 3.9 | about seismic energy4 minutes agoApr 24, 2026 19:29 GMT / Apr 24, 2026 07:29 pm (Universal Time)Lat / Lng: 40.3655 / -125.063: 66 km W of Petrolia, CASource: USGSOther sources: EMSC: 3.9 / 0.5 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22941739',40.36550,-125.06300,'4 minutes ago: Mag. 3.9, 66 km W of Petrolia, CA',html,'quakes-5-24.png',18,18,9,9,124]); function mkRep(id,notFelt){var nFelt=notFelt||false;var src="https://www.volcanoesandearthquakes.com/app/earthquake-report.php?quakeId="+id;if(nFelt==true){src+="¬Felt=true";}window.open(src,"","status=0,toolbar=0,location=0,directories=0,menubar=0,resizable=1,scrollbars=1,height=400,width=350");} function locationHashChanged(e){-1!=e.oldURL.indexOf("#popupMap")&&closePopup()} window.onhashchange = locationHashChanged; function comment(e){var t=e.parentNode,a=(t.dataset.id,document.getElementById("commentForm"));"none"==a.style.display?(t.appendChild(a),a.style.display="block"):a.style.display="none"}function sendComment(e){var t=e.parentNode,a=t.parentNode.dataset.id,n=document.getElementById("commentContent"),p=n.value.trim();if(p){var o="id="+a+"&quakeId="+thisQuakeId;o+="&comment="+decodeURIComponent(p),mkRequest("//reports.volcanodiscovery.com/app/eqReportComment.php","post",o,function(e){e.responseText;alert("Thank you for submitting your comment!"),t.style.display="none",n.value=""})}}function flagReport(e){var t=e.parentNode.dataset.id;if(confirm("Report this as inappropriate?")){var a="id="+t+"&quakeId="+thisQuakeId+"&flagAsInappropriate=1";mkRequest("//reports.volcanodiscovery.com/app/eqReportComment.php","post",a,function(t){var a=t.responseText;alert(a),e.style.display="none"})}}function likeReport(e){var t="id="+e.parentNode.dataset.id+"&quakeId="+thisQuakeId+"&like=1";mkRequest("//reports.volcanodiscovery.com/app/eqReportComment.php","post",t,function(t){t.responseText;e.style.opacity=.5})}]]>[smaller] [bigger]Most recent quakes Top 20 past 24 hrs Quakes in the US CaliforniaNearby placesThe closest larger town where the quake might have been felt is Eureka, a town with 27,000 inhabitants in the United States, in 90 km (56 mi) distance northeast of the epicenter. People likely experienced very weak shaking there. Several smaller towns and villages are located closer to the epicenter and might have experienced stronger shaking.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry72 km (44 mi)E of epicenterFerndale(pop: 1,370)II: Very weakHumboldt County, CaliforniaUnited States79 km (49 mi)NE of epicenterIndianola(pop: 823)II: Very weakHumboldt County, CaliforniaUnited States81 km (50 mi)E of epicenterFortuna(pop: 12,000)II: Very weakHumboldt County, CaliforniaUnited States82 km (51 mi)E of epicenterRio Dell(pop: 3,390)II: Very weakHumboldt County, CaliforniaUnited States90 km (56 mi)NE of epicenterEureka(pop: 27,000)II: Very weakHumboldt County, CaliforniaUnited States92 km (57 mi)SE of epicenterShelter Cove(pop: 693)II: Very weakHumboldt County, CaliforniaUnited States97 km (60 mi)E of epicenterWeott(pop: 288)II: Very weakHumboldt County, CaliforniaUnited States100 km (62 mi)NE of epicenterBayside(pop: 17,100)II: Very weakHumboldt County, CaliforniaUnited States100 km (62 mi)NE of epicenterArcata(pop: 17,800)II: Very weakHumboldt County, CaliforniaUnited States104 km (64 mi)NE of epicenterMcKinleyville(pop: 15,200)II: Very weakHumboldt County, CaliforniaUnited States106 km (66 mi)E of epicenterMiranda(pop: 520)II: Very weakHumboldt County, CaliforniaUnited States109 km (68 mi)E of epicenterRedway(pop: 1,230)II: Very weakHumboldt County, CaliforniaUnited States111 km (69 mi)NE of epicenterWesthaven-Moonstone(pop: 1,210)II: Very weakHumboldt County, CaliforniaUnited States118 km (73 mi)NE of epicenterBig Lagoon(pop: 93)II: Very weakHumboldt County, CaliforniaUnited States125 km (78 mi)E of epicenterAlderpoint(pop: 186)II: Very weakHumboldt County, CaliforniaUnited States127 km (79 mi)SE of epicenterLeggett(pop: 122)II: Very weakMendocino County, CaliforniaUnited States132 km (82 mi)E of epicenterMad River(pop: 420)II: Very weakTrinity County, CaliforniaUnited States133 km (82 mi)NE of epicenterOrick(pop: 357)II: Very weakHumboldt County, CaliforniaUnited States137 km (85 mi)NE of epicenterWillow Creek(pop: 1,710)II: Very weakHumboldt County, CaliforniaUnited States139 km (86 mi)E of epicenterHyampom(pop: 241)II: Very weakTrinity County, CaliforniaUnited States141 km (88 mi)NE of epicenterTrinity Village(pop: 297)II: Very weakTrinity County, CaliforniaUnited States148 km (92 mi)SE of epicenterFort Bragg(pop: 7,290)II: Very weakMendocino County, CaliforniaUnited States154 km (96 mi)SE of epicenterLaytonville(pop: 1,230)II: Very weakMendocino County, CaliforniaUnited States155 km (96 mi)NE of epicenterKlamath(pop: 779)II: Very weakDel Norte County, CaliforniaUnited States160 km (99 mi)SE of epicenterMendocino(pop: 894)II: Very weakCaliforniaUnited States175 km (109 mi)SE of epicenterComptche(pop: 159)I: Not feltMendocino County, CaliforniaUnited StatesNotes:(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.User-reports for this quakeThere are no user reports for this quake yet.If you felt it, be the first to report it!Get the Android appCompare Quake DataData for the same earthquake as reported by different agenciesThe more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.MagDepthTime GMT2026-04-24EpicenterAgency3.910.5 km0.3 mi19:29:55.5866 km W of Petrolia, CAUSGS (United States Geological Survey)3.90.5 km0.3 mi19:29:55.58OFFSHORE NORTHERN CALIFORNIA0 km (0 mi) epicenter difference with USGSEMSC (European-Mediterranean Seismological Centre)Earthquake statisticsAverage number of earthquakesBased on data from the past 56 years and our earthquake archive back to 1900, there are about 493 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 7 or higher: 0.03 quakes per year (or 1 quake every 31.3 years)Mag. 6 or higher: 0.23 quakes per year (or 1 quake every 4.3 years)Mag. 5 or higher: 1.26 quakes per yearMag. 4 or higher: 13.7 quakes per yearMag. 3 or higher: 59 quakes per year (or 4.9 quakes per month)Mag. 2 or higher: 360 quakes per year (or 30 quakes per month)Mag. 1 or higher: 490 quakes per year (or 41 quakes per month)The area where this quake occurred has a very high level of seismic activity. It has had at least 4 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 30 to 35 years.Number of quakes per yearPrevious quakes in the same area of this earthquake