Light magnitude 3.9 earthquake at 5 km depth3 Oct 03:25 UTC: First to report: USGS after 7 minutes.Update Fri, 3 Oct 2025, 03:27Magnitude 3.9 earthquake strikes near Rexburg, Madison County, Idaho, USAA very shallow magnitude 3.9 earthquake was reported in the evening near Rexburg, Madison County, Idaho, USA.According to the United States Geological Survey, the quake hit on Thursday, October 2nd, 2025, at 9:19 pm local time at a very shallow depth of 3.1 miles. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.A second report was later issued by The Incorporated Research Institutions for Seismology (IRIS), which listed it as a magnitude 3.9 earthquake as well.Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.Weak shaking might have been felt in Lima (pop. 220) located 18 miles from the epicenter.Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Dillon (pop. 4,200) located 49 miles from the epicenter, Saint Anthony (pop. 3,500) 50 miles away, Ashton (pop. 1,100) 52 miles away, Sugar City (pop. 1,300) 54 miles away, Rexburg (pop. 27,700) 56 miles away, and West Yellowstone (pop. 1,300) 57 miles away.If you were or still are in this area during the quake help others with your feedback and report it here.Download the Volcanoes & Earthquakes app and get one of the fastest seismic alerts online: Android | iOSI didn't feel itI felt this quakeEarthquake detailsDate & timeOct 3, 2025 03:19:01 UTC - Local time at epicenterThursday, Oct 2, 2025, at 09:19 pm (America/Boise GMT -6)Statusconfirmed (manually revised)Magnitude3.9Depth5 kmEpicenter latitude / longitude44.5642°N / 112.2483°WClark County, Idaho, United StatesSeismic antipode44.5642°S / 67.7517°EQuality49 seismic stationsShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceUSGS (United States Geological Survey)Nearest volcanoHell's Half Acre (119 km / 74 mi)Weather at epicenter at time of quakeBroken Clouds 10.2°C (50 F), humidity: 71%, wind: 2 m/s (4 kts) from ESEEstimated 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 energy17 minutes agoOct 3, 2025 03:19 GMT / Oct 2, 2025 09:19 pm (Boise time)Lat / Lng: 44.5642 / -112.2483: 23 km NNW of Spencer, IdahoSource: USGSOther sources: IRIS: 3.9 / 5 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22232725',44.56420,-112.24830,'17 minutes ago: Mag. 3.9, 23 km NNW of Spencer, Idaho',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]Ground shaking from this quakeMap of estimated ground shaking (source:USGS)Most recent quakes Top 20 past 24 hrs Quakes in the US IdahoNearby placesThe closest larger town where the quake might have been felt is Rexburg, a town with 28,000 inhabitants in the United States, in 90 km (56 mi) distance southeast of the epicenter. People likely experienced very weak shaking there. Many 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(*)RegionCountry28 km (18 mi)W of epicenterLima(pop: 222)III: WeakBeaverhead County, MontanaUnited States43 km (27 mi)S of epicenterDubois(pop: 606)III: WeakClark County, IdahoUnited States71 km (44 mi)E of epicenterIsland Park(pop: 272)II: Very weakFremont County, IdahoUnited States79 km (49 mi)NW of epicenterDillon(pop: 4,210)II: Very weakBeaverhead County, MontanaUnited States80 km (50 mi)SE of epicenterSaint Anthony(pop: 3,540)II: Very weakFremont County, IdahoUnited States84 km (52 mi)SE of epicenterAshton(pop: 1,050)II: Very weakFremont County, IdahoUnited States85 km (53 mi)N of epicenterVirginia City(pop: 199)II: Very weakMadison County, MontanaUnited States85 km (53 mi)N of epicenterAlder(pop: 103)II: Very weakMadison County, MontanaUnited States87 km (54 mi)E of epicenterHebgen Lake Estates(pop: 70)II: Very weakGallatin County, MontanaUnited States89 km (55 mi)W of epicenterLeadore(pop: 102)II: Very weakLemhi County, IdahoUnited States90 km (56 mi)SE of epicenterRexburg(pop: 27,700)II: Very weakMadison County, IdahoUnited States91 km (57 mi)E of epicenterWest Yellowstone(pop: 1,340)II: Very weakGallatin County, MontanaUnited States94 km (59 mi)S of epicenterRoberts(pop: 573)II: Very weakJefferson County, IdahoUnited States96 km (60 mi)NE of epicenterEnnis(pop: 884)II: Very weakMadison County, MontanaUnited States99 km (62 mi)N of epicenterSheridan(pop: 677)II: Very weakMadison County, MontanaUnited States103 km (64 mi)S of epicenterRigby(pop: 4,030)II: Very weakJefferson County, IdahoUnited States106 km (66 mi)NE of epicenterBig Sky(pop: 2,310)II: Very weakGallatin County, MontanaUnited States109 km (68 mi)N of epicenterTwin Bridges(pop: 394)II: Very weakMadison County, MontanaUnited States110 km (69 mi)S of epicenterRirie(pop: 637)II: Very weakJefferson County, IdahoUnited States123 km (77 mi)S of epicenterIdaho Falls(pop: 59,200)II: Very weakBonneville County, IdahoUnited States124 km (77 mi)S of epicenterAmmon(pop: 15,000)II: Very weakBonneville County, IdahoUnited States128 km (80 mi)SW of epicenterMoore(pop: 164)II: Very weakButte County, IdahoUnited States130 km (81 mi)SE of epicenterDriggs(pop: 1,690)II: Very weakTeton County, IdahoUnited States131 km (81 mi)SW of epicenterMackay(pop: 476)II: Very weakCuster County, IdahoUnited States132 km (82 mi)S of epicenterShelley(pop: 4,340)II: Very weakBingham County, IdahoUnited States132 km (82 mi)NE of epicenterGardiner(pop: 875)II: Very weakPark County, MontanaUnited States133 km (83 mi)SW of epicenterArco(pop: 857)II: Very weakButte County, IdahoUnited States140 km (87 mi)SE of epicenterVictor(pop: 1,960)II: Very weakTeton County, IdahoUnited States147 km (91 mi)NW of epicenterSalmon(pop: 3,040)II: Very weakLemhi County, IdahoUnited States148 km (92 mi)NE of epicenterFour Corners(pop: 3,150)II: Very weakGallatin County, MontanaUnited States149 km (93 mi)SE of epicenterIrwin(pop: 224)II: Very weakBonneville County, IdahoUnited States151 km (94 mi)NE of epicenterChurchill(pop: 902)II: Very weakGallatin County, MontanaUnited States153 km (95 mi)NE of epicenterPray(pop: 681)II: Very weakPark County, MontanaUnited States156 km (97 mi)NE of epicenterBozeman(pop: 43,400)II: Very weakGallatin County, MontanaUnited States159 km (99 mi)NE of epicenterBelgrade(pop: 8,030)II: Very weakGallatin County, MontanaUnited States169 km (105 mi)SE of epicenterJackson(pop: 10,500)I: Not feltTeton County, WyomingUnited States180 km (112 mi)NE of epicenterLivingston(pop: 7,300)I: Not feltPark County, MontanaUnited States195 km (121 mi)SW of epicenterCarey(pop: 602)I: Not feltBlaine County, IdahoUnited States333 km (207 mi)W of epicenterBoise(pop: 146,000)I: Not feltAda County, IdahoUnited 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!Compare 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 GMT2025-10-3EpicenterAgency3.95 km3.1 mi±2 km03:19:01.80423 km NNW of Spencer, IdahoEpicenter uncertainty: ± 1.9 kmUSGS (United States Geological Survey)3.95 km3.1 mi03:19:01eastern idaho0 km (0 mi) epicenter difference with USGSIRIS (Incorporated Research Institutions for Seismology)Earthquake statisticsAverage number of earthquakesBased on data from the past 55 years and our earthquake archive back to 1900, there are about 765 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.02 quakes per year (or 1 quake every 62.5 years)Mag. 5 or higher: 0.07 quakes per year (or 1 quake every 14.3 years)Mag. 4 or higher: 0.9 quakes per year (or 1 quake every 1.1 years)Mag. 3 or higher: 6.4 quakes per yearMag. 2 or higher: 43 quakes per year (or 3.6 quakes per month)Mag. 1 or higher: 319 quakes per year (or 26.6 quakes per month)The area where this quake occurred has a high level of seismic activity. It has had at least 2 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 60 to 65 years.Number of quakes per yearPrevious quakes in the same area of this earthquakeThe earthquake occurred 4 weeks after a magnitude 3.9 earthquake had hit on Monday, Sep 8, 2025, at 12:58 am local time (America/Boise GMT -6) in 2.7 km (1.7 mi) distance to the south:Mag. 3.9 earthquake Clark County - Idaho, United States - Sep 8, 2025 - The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 4.6. It had occurred 6 years earlier, on Tuesday, Apr 9, 2019, at 12:08 pm local time (America/Denver GMT -6) in Montana, United States:Mag. 4.6 earthquake 5.9 mi northeast of Lima - Montana, United States - Apr 9, 2019 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 7.2. It had occurred 66 years ago earlier, on Tuesday, Aug 18, 1959, at 12:37 am local time (America/Denver GMT -6) in Montana, United States:Mag. 7.2 earthquake 10.2 mi northwest of West Yellowstone - Montana, United States - Aug 18, 1959 - Below is a list and map of larger or recent quakes that had occurred near the epicenter before this earthquake (within up to 100 km/61 mi distance, up to 300 km/183 mi for very large quakes above mag. 7). Filter and sort the list by magnitude or time.Max results102050100AllMagnitudeAll2+3+4+5+6+7+8+Time before48 hours1 week30 days1 year5 years30 yearsAny ageDate and TimeMagDepthDistanceLocationDetailsMapSep 28, 10:21 am (Denver)3.010 km1 km (0.6 mi) to the NW 24 km NNW of Spencer, Idaho I FELT ITInfoSep 8, 01:26 am (Denver)3.710 km2.8 km (1.7 mi) to the E 22 km N of Spencer, Idaho 1 reportInfoSep 8, 12:58 am (Boise)3.99.9 km2.7 km (1.7 mi) to the SClark County, 54 mi northwest of Rexburg, Madison County, Idaho, United StatesInfoSep 8, 12:57 am (Denver)3.710 km2.3 km (1.4 mi) to the E 23 km N of Spencer, Idaho 1 reportInfoSep 7, 07:43 pm (Denver)3.410.2 km1.8 km (1.1 mi) to the SEClark County, 55 mi northwest of Rexburg, Madison County, Idaho, United StatesInfoOct 7, 2024 12:54 am (Denver)4.117 km76 km (47 mi) to the NBeaverhead County, 47 mi south of Butte-Silver Bow (Balance), Silver Bow County, Montana, United States 111 reportsInfoJul 14, 2023 04:26 pm (Denver)4.212 km28 km (17 mi) to the W 42 mi south of Dillon, Beaverhead County, Montana, United States 6 reportsInfoFeb 29, 2020 01:06 pm (Universal Time)3.912 km62 km (38 mi) to the NEMadison County, 18 mi west of Hebgen Lake Estates, Gallatin County, Montana, United States 5 reportsInfoApr 9, 2019 12:08 pm (Denver)4.614 km25 km (16 mi) to the NW 5.9 mi northeast of Lima, Beaverhead County, Montana, United States 8 reportsInfoJun 15, 2017 06:48 pm (Denver)4.39.3 km99 km (62 mi) to the EPark County, Wyoming, 9 mi north of West Yellowstone, Gallatin County, Montana, United States 2 reportsInfoJun 13, 2016 06:14 am (Denver)4.310 km43 km (26 mi) to the NEMadison County, 33 mi west of West Yellowstone, Gallatin County, Montana, United States 2 reportsInfoApr 5, 2011 01:05 am (Denver)4.412 km14 km (8.6 mi) to the NE 28 km NNE of Spencer, IdahoInfoMay 8, 2007 09:46 am (Denver)4.414 km93 km (58 mi) to the N 8 km NNW of Alder, MontanaInfoFeb 4, 2006 09:25 pm (Denver)4.414 km33 km (21 mi) to the NEBeaverhead County, Montana, 60 mi north of Rexburg, Madison County, Idaho, United StatesInfoOct 31, 2005 12:23 am (Universal Time)4.55 km97 km (60 mi) to the W western Montana (USA)InfoJul 25, 2005 10:08 pm (Denver)5.613 km94 km (58 mi) to the N 16 km N of Dillon, MontanaInfoAug 20, 1999 07:50 am (Denver)5.116 km49 km (31 mi) to the NWBeaverhead County, 85 mi south of Butte, Silver Bow County, Montana, United StatesInfoNov 26, 1985 03:34 am (Denver)4.45 km95 km (59 mi) to the ETeton County, 2.4 mi east of West Yellowstone, Gallatin County, Montana, United StatesInfoOct 26, 1982 08:26 am (Universal Time)4.65 km44 km (28 mi) to the NE western Montana (USA)InfoMay 8, 1979 12:58 am (Universal Time)4.65 km71 km (44 mi) to the EFremont County, Idaho, 15 mi northwest of West Yellowstone, Gallatin County, Montana, United StatesInfoOct 19, 1977 04:50 pm (Universal Time)4.710 km41 km (26 mi) to the NE western Montana (USA)InfoMar 11, 1977 06:17 am (Denver)5.25 km67 km (42 mi) to the NE western Montana (USA)InfoJul 1, 1974 12:23 pm (Denver)4.85 km92 km (57 mi) to the EGallatin County, Montana, 62 mi northeast of Rexburg, Madison County, Idaho, United StatesInfoJun 8, 1974 06:50 pm (Denver)4.95 km98 km (61 mi) to the EPark County, 61 mi south of Bozeman, Gallatin County, Montana, United StatesInfoJun 22, 1970 08:34 pm (Denver)4.533 km88 km (55 mi) to the E Hebgen Lake RegionInfoJan 7, 1970 12:27 pm (Universal Time)4.933 km70 km (44 mi) to the NE MontanaInfoJan 10, 1967 05:52 am (Denver)4.525 km78 km (48 mi) to the NE Hebgen Lake RegionInfoNov 3, 1965 06:07 am (Denver)4.514 km76 km (47 mi) to the N MontanaInfoOct 8, 1965 01:34 pm (Denver)4.95 km79 km (49 mi) to the E 9 mi northwest of West Yellowstone, Gallatin County, Montana, United StatesInfoJan 5, 1965 08:01 pm (Denver)5.15 km46 km (28 mi) to the NW 12 mi northwest of Lima, Beaverhead County, Montana, United StatesInfoOct 21, 1964 01:38 am (Denver)5.210 km63 km (39 mi) to the NEMadison County, 27 mi northwest of West Yellowstone, Gallatin County, Montana, United StatesInfoAug 20, 1959 01:11 pm (Denver)5.05 km48 km (30 mi) to the EBeaverhead County, 28 mi west of West Yellowstone, Gallatin County, Montana, United StatesInfoAug 19, 1959 03:45 pm (Denver)4.75 km56 km (35 mi) to the NEMadison County, 26 mi west of West Yellowstone, Gallatin County, Montana, United StatesInfoAug 19, 1959 01:06 pm (Denver)5.05 km59 km (37 mi) to the NEMadison County, 26 mi northwest of West Yellowstone, Gallatin County, Montana, United StatesInfoAug 18, 1959 12:37 am (Denver)7.212 km87 km (54 mi) to the E 10.2 mi northwest of West Yellowstone, Gallatin County, Montana, United StatesInfoNov 23, 1947 09:46 am (Universal Time)6.115 km77 km (48 mi) to the NEMadison County, 35 mi northwest of West Yellowstone, Gallatin County, Montana, United StatesInfoMap of earlier quakes in the area of this quakeMax results102050100AllMagnitudeAll2+3+4+5+6+7+8+Time before48 hours1 week30 days1 year5 years30 yearsAny ageOldest quakes are shown in yellow, most recent in red.[quakes -][quakes +][smaller][bigger]