Strong magnitude 5.4 earthquake at 91 km depth26 Jul 05:11 UTC: First to report: USGS after 7 minutes.26 Jul 05:16: Magnitude recalculated from 5.2 to 5.4. Hypocenter depth recalculated from 93.00 to 91.02 km (from 58 to 57 mi). Epicenter location corrected by 24 km (15 mi) towards N.I didn't feel itI felt this quakeEarthquake detailsDate & timeJul 26, 2025 05:03:53 UTC - Local time at epicenterFriday, Jul 25, 2025, at 08:03 pm (GMT -9)Statusconfirmed (manually revised)Magnitude5.4Depth91 kmEpicenter latitude / longitude51.7001°N / 178.4038°EAleutians West, Alaska, United StatesSeismic antipode51.7001°S / 1.596°WQuality113 seismic stationsShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceUSGS (United States Geological Survey)Nearest volcanoLittle Sitkin (29 km / 18 mi)Weather at epicenter at time of quakeOvercast Clouds 9.4°C (49 F), humidity: 99%, wind: 5 m/s (11 kts) from SSEEstimated seismic energy released7.9 x 1012 joules (2.21 gigawatt hours, equivalent to 1898 tons of TNT or 0.1 atomic bombs!) | equivalent to ONE quake of magnitude 5.4 | about seismic energy22 minutes agoJul 26, 2025 05:03 GMT / Jul 25, 2025 08:03 pm (GMT -9)Lat / Lng: 51.7001 / 178.4038: Rat Islands, Aleutian Islands, AlaskaSource: USGSOther sources: IRIS: 5.4 / 91 km, GFZ: 5.5 / 10 km, 1 more...Detail info | You felt it? - Report it!';storedMarkers.push(['quake-21993389',51.70010,178.40380,'22 minutes ago: Mag. 5.4, Rat Islands, Aleutian Islands, Alaska',html,'quakes-7-24.png',30,30,15,15,126]); 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)Ground accelleration map for this quakeMap of estimated ground accelleration (source:USGS)Most recent quakes Top 20 past 24 hrs Quakes in the US AlaskaNearby placesThe closest larger town where the quake might have been felt is Attu Station, a town with 21 inhabitants in the United States, in 377 km (234 mi) distance west of the epicenter. People likely experienced very weak shaking there.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry377 km (234 mi)W of epicenterAttu Station(pop: 21)II: Very weakAleutians West Census Area, AlaskaUnited 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 GMT2025-07-26EpicenterAgency5.491 km57 mi05:03:53.969Rat Islands, Aleutian Islands, AlaskaUSGS (United States Geological Survey)5.491 km57 mi05:03:53rat islands, aleutian islands0 km (0 mi) epicenter difference with USGSIRIS (Incorporated Research Institutions for Seismology)5.510 km6.2 mi(*)05:03:45.6Rat Islands, Aleutian Islands9.2 km (5.7 mi) epicenter difference with USGSGFZ (German Research Centre for Geosciences)5.491 km57 mi05:03:53.969RAT ISLANDS, ALEUTIAN ISLANDS0 km (0 mi) epicenter difference with USGSEMSC (European-Mediterranean Seismological Centre)5.2710 km6.2 mi(*)05:03:45.509near Anchorage16 km (10.2 mi) epicenter difference with USGSRENASS (Réseau National de Surveillance Sismique (RéNaSS))Notes:(*) A depth given as 10 km often means that the the depth of the quake could be not determined with sufficient accuracy.Aftershocks for this quakeNo aftershocks have been recorded so far. When aftershocks are detected, we will update this section.What are aftershocks?Larger earthquakes (above magnitude 5 or so) such as this one are usually followed by smaller ones known as aftershocks that occur in the same area during the days, weeks, months or even years after the main shock.[More info]What about this quake?Based on its magnitude, the fault that was active during the quake likely ruptured beneath a surface area of approximately 25 km2 (10 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 9 km (5 mi).[More info]Recorded aftershocks, latest first (0 quake)Jul 25, 2025 08:03 pm (GMT -9)22 minutes ago5.491 km0 km - This quakeBering Sea, 111 mi W of Amatignak Island, Aleutians West Census Area, Alaska, United StatesMain Shock (this quake)MoreMap of aftershocksPrevious quakes in the same area of this earthquakeStrongest in 1 year 17 weeksThe earthquake was the strongest to hit this part of the United States in over 1 year 17 weeks. Earlier, the last quake of equal or greater strength near the present epicenter had been a magnitude 5.8 earthquake on Saturday, Mar 30, 2024, at 04:28 pm (GMT +0 local time) in 46 km (29 mi) distance to the north:Mag. 5.8 earthquake 225 mi east of Attu Station - Alaska, United States - Mar 30, 2024 - The strongest-ever (since 1900) recorded quake in this area measured magnitude 8.7. It had occurred 61 years ago earlier, on Wednesday, Feb 3, 1965, at 07:01 pm (GMT -10 local time) in Alaska, United States:Mag. 8.7 earthquake Rat Islands - Aleutian Islands, Alaska - Feb 3, 1965 - 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 TimeMagDepthDistanceLocationDetailsMapJul 21, 10:07 am (GMT -9)5.056 km91 km (56 mi) to the SEBering Sea, 57 mi west of Amatignak Island, Aleutians West Census Area, Alaska, United States I FELT ITInfoMay 29, 04:31 pm (GMT -9)4.274 km22 km (14 mi) to the SE Rat Islands, Aleutian Islands, AlaskaInfoMay 22, 07:38 pm (GMT -9)4.073 km7.1 km (4.4 mi) to the SE Rat Islands, Aleutian Islands, AlaskaInfoMay 5, 08:30 pm (Adak)4.2121 km25 km (15 mi) to the N Rat Islands, Aleutian Islands, AlaskaInfoMar 30, 08:58 pm (Adak)4.2138 km18 km (11 mi) to the N 14 km ENE of Yerington, NevadaInfoMar 30, 2024 04:28 pm (GMT +0)5.8109 km46 km (29 mi) to the N 225 mi east of Attu Station, Aleutians West Census Area, Alaska, United StatesInfoFeb 28, 2024 06:50 am (Adak)5.5120 km88 km (54 mi) to the NE 260 km W of Adak, AlaskaInfoJun 8, 2023 11:31 am (Adak)5.77.2 km67 km (41 mi) to the NWBering Sea, 80 mi east of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoDec 14, 2022 09:40 am (Adak)6.373 km17 km (10.5 mi) to the SE Rat Islands, Aleutian Islands, Alaska 1 reportInfoAug 14, 2022 05:43 am (Adak)5.2134 km47 km (30 mi) to the NBering Sea, 98 mi east of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJun 4, 2022 02:38 pm (Adak)6.3105 km40 km (25 mi) to the NBering Sea, 101 mi east of Buldir Island, Aleutians West Census Area, Alaska, United States 1 reportInfoApr 2, 2019 09:35 pm (GMT +0)6.48 km57 km (35 mi) to the NWBering Sea, 10.7 mi north of Segula Island, Aleutians West Census Area, Alaska, United States 2 reportsInfoJun 23, 2014 12:11 pm (Adak)6.0100 km35 km (22 mi) to the NBering Sea, 111 mi east of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJun 23, 2014 08:53 pm (GMT +0)7.9109 km28 km (17 mi) to the NEBering Sea, 244 mi east of Attu Station, Aleutians West Census Area, Alaska, United States 1 reportInfoMay 20, 2008 03:53 am (GMT -10)6.327 km65 km (40 mi) to the SEBering Sea, 93 mi west of Amatignak Island, Aleutians West Census Area, Alaska, United StatesInfoJun 13, 2006 07:46 pm (Adak)6.029 km92 km (57 mi) to the WBering Sea, 58 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJun 14, 2006 04:18 am (GMT +0)6.514 km91 km (57 mi) to the WBering Sea, 65 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJun 14, 2005 08:10 am (Adak)6.817 km81 km (51 mi) to the SEBering Sea, 68 mi west of Amatignak Island, Aleutians West Census Area, Alaska, United StatesInfoNov 16, 2003 08:43 pm (GMT -10)7.833 km64 km (40 mi) to the SBering Sea, 97 mi west of Amatignak Island, Aleutians West Census Area, Alaska, United StatesInfoJun 15, 2003 09:24 am (GMT -10)6.520 km104 km (64 mi) to the WBering Sea, 70 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoMar 17, 2003 08:55 am (GMT -10)6.233 km54 km (34 mi) to the SW Rat Islands, Aleutian Islands, AlaskaInfoMar 17, 2003 06:36 am (GMT -10)7.133 km56 km (35 mi) to the SWBering Sea, 115 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoNov 7, 2002 03:14 pm (GMT +0)6.633 km85 km (53 mi) to the SEBering Sea, 68 mi west of Amatignak Island, Aleutians West Census Area, Alaska, United StatesInfoDec 16, 1997 06:38 pm (GMT -10)6.620 km66 km (41 mi) to the SE Rat Islands, Aleutian Islands, AlaskaInfoMar 25, 1997 05:08 pm (Adak)6.733 km91 km (57 mi) to the SEBering Sea, 59 mi west of Amatignak Island, Aleutians West Census Area, Alaska, United StatesInfoMar 21, 1996 05:24 pm (GMT -10)6.820 km57 km (35 mi) to the S Rat Islands, Aleutian Islands, AlaskaInfoApr 22, 1995 05:55 pm (Adak)6.517 km99 km (62 mi) to the SE 260 km WSW of Adak, AlaskaInfoJan 16, 1995 09:14 am (Adak)6.333 km72 km (45 mi) to the SE 298 km WSW of Adak, AlaskaInfoJan 23, 1991 01:12 am (GMT +0)6.4108 km42 km (26 mi) to the NEBering Sea, 101 mi northwest of Amatignak Island, Aleutians West Census Area, Alaska, United StatesInfoMay 9, 1985 09:05 am (GMT -10)6.333 km43 km (27 mi) to the SWBering Sea, 105 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJan 29, 1981 10:52 pm (GMT -10)7.033 km147 km (91 mi) to the WBering Sea, 45 mi south of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoSep 4, 1977 07:24 am (GMT -10)6.68 km69 km (43 mi) to the SWBering Sea, 121 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoSep 4, 1977 07:10 am (GMT -10)6.431 km68 km (42 mi) to the S Rat Islands, Aleutian Islands, AlaskaInfoSep 4, 1977 05:40 am (GMT -10)6.434 km55 km (34 mi) to the S Rat Islands, Aleutian Islands, AlaskaInfoMar 29, 1965 04:27 pm (GMT -10)7.620 km161 km (100 mi) to the SNorth Pacific Ocean, 145 mi southwest of Amatignak Island, Aleutians West Census Area, Alaska, United StatesInfoFeb 3, 1965 11:40 pm (Adak)7.330 km88 km (55 mi) to the E 264 km WSW of Adak, AlaskaInfoFeb 3, 1965 07:01 pm (GMT -10)8.730 km54 km (34 mi) to the SEBering Sea, 94 mi west of Amatignak Island, Aleutians West Census Area, Alaska, United StatesInfoJul 13, 1940 08:52 pm (Adak)7.465 km36 km (22 mi) to the NWBering Sea, 100 mi east of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoSep 8, 1939 12:04 pm (Universal Time)7.215 km252 km (156 mi) to the WNorth Pacific Ocean, 103 mi southwest of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoApr 26, 1930 04:18 pm (Universal Time)6.635 km79 km (49 mi) to the E 275 km WSW of Adak, AlaskaInfoFeb 6, 1916 09:51 pm (Universal Time)7.015 km111 km (69 mi) to the SENorth Pacific Ocean, 87 mi west of Amatignak Island, Aleutians West Census Area, Alaska, United StatesInfoSep 9, 1910 01:13 am (Universal Time)7.00 km126 km (78 mi) to the SE 101 km S of Adak, AlaskaInfoApr 10, 1909 07:36 pm (Universal Time)7.00 km236 km (147 mi) to the WNorth Pacific Ocean, 66 mi southeast of Agattu Island, Aleutians West Census Area, Alaska, United StatesInfoAug 17, 1906 12:11 am (Universal Time)8.3110 km23 km (14 mi) to the NWBering Sea, 102 mi east of Buldir Island, Aleutians West Census Area, Alaska, 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]