Moderate mag. 4.5 earthquake - Rat Islands, Aleutian Islands, on Friday, May 1, 2026, at 04:27 pm (Universal Time)

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Moderate magnitude 4.5 earthquake at unknown depth1 May 16:44 UTC: First to report: GFZ after 17 minutes.1 May 16:56: Now using data updates from EMSCI didn't feel itI felt this quakeEarthquake detailsDate & timeMay 1, 2026 16:27:53 UTC - Local time at epicenterFriday, May 1, 2026, at 07:27 am (GMT -9)StatusconfirmedMagnitude4.50Depth10 kmEpicenter latitude / longitude52.108°N / 177.341°EAleutians West, Alaska, United StatesSeismic antipode52.108°S / 2.659°WShaking intensityV Moderate shaking near epicenterFelt0 reportsPrimary data sourceEMSC (European-Mediterranean Seismological Centre)Nearest volcanoKiska (18 km / 11 mi)Weather at epicenter at time of quakeOvercast Clouds 2.8°C (37 F), humidity: 81%, wind: 11 m/s (22 kts) from NNWEstimated seismic energy released3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 tons of TNT) | equivalent to ONE quake of magnitude 4.5 | about seismic energy35 minutes agoMay 1, 2026 16:27 GMT / May 1, 2026 07:27 am (GMT -9)Lat / Lng: 52.108 / 177.341: Rat Islands, Aleutian IslandsSource: EMSCOther sources: RaspberryShake: 4.5 / 10 km, GFZ: 4.5 / 10 kmDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22962642',52.10800,177.34100,'35 minutes ago: Mag. 4.5, Rat Islands, Aleutian Islands',html,'quakes-6-24.png',25,25,12,12,125]); function mkRep(id,notFelt){var nFelt=notFelt||false;var src="https://www.volcanoesandearthquakes.com/app/earthquake-report.php?quakeId="+id;if(nFelt==true){src+="&notFelt=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 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 293 km (182 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(*)RegionCountry293 km (182 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!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 GMT2026-05-1EpicenterAgency4.510 km6.2 mi(*)16:27:53.59RAT ISLANDS, ALEUTIAN ISLANDSEMSC (European-Mediterranean Seismological Centre)4.510 km6.2 mi(*)16:27:53Rat Islands, Aleutian Islands0.2 km (0.1 mi) epicenter difference with EMSCRaspberryShake (RaspberryShake)4.510 km6.2 mi(*)16:27:53.59Rat Islands, Aleutian Islands0.2 km (0.1 mi) epicenter difference with EMSCGFZ (German Research Centre for Geosciences)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 3 km2 (1 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 3 km (2 mi).[More info]Recorded aftershocks, latest first (0 quake)May 1, 2026 07:27 am (GMT -9)35 minutes ago4.510 km0 km - This quakeBering Sea, 62 mi E of Buldir Island, Aleutians West Census Area, Alaska, United StatesMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 26 years and our earthquake archive back to 1900, there are about 352 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: 0.26 quakes per year (or 1 quake every 3.8 years)Mag. 5 or higher: 3.2 quakes per yearMag. 4 or higher: 31.1 quakes per year (or 2.6 quakes per month)Mag. 3 or higher: 99 quakes per year (or 8.2 quakes per month)Mag. 2 or higher: 202 quakes per year (or 16.8 quakes per month)Mag. 1 or higher: 284 quakes per year (or 23.7 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 earthquakeThe earthquake occurred 6 days after a magnitude 4.5 earthquake had hit on Saturday, Apr 25, 2026, at 06:28 pm (GMT -9 local time) in 67 km (42 mi) distance to the west:Mag. 4.5 earthquake Bering Sea - Alaska, United States - The largest quake near the epicenter of this quake during the 10 years before was an event of magnitude 6.5. It had occurred 9 years earlier, on Sunday, Oct 8, 2017, at 12:34 pm (GMT -10 local time) in Alaska,  United States:Mag. 6.5 earthquake Bering Sea - Alaska, United States - Oct 8, 2017 - 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 Bering Sea - Alaska, United States - 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 TimeMagDepthDistanceLocationDetailsMapApr 27, 05:01 am (GMT -9)4.310 km54 km (33 mi) to the WBering Sea, 30 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United States  I FELT ITInfoApr 25, 06:28 pm (GMT -9)4.510 km67 km (42 mi) to the WBering Sea, 22 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United States  I FELT ITInfoApr 25, 05:41 am (GMT -10)4.014 km63 km (39 mi) to the W 230 km ESE of Attu Station, Alaska  I FELT ITInfoApr 25, 05:41 am (GMT -10)4.17.8 km66 km (41 mi) to the WBering Sea, 25 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United States  I FELT ITInfoApr 24, 08:18 pm (GMT -9)4.510 km55 km (34 mi) to the WBering Sea, 28 mi east of Buldir Island, Aleutians West Census Area, Alaska, United States  I FELT ITInfoApr 3, 04:07 am (GMT -10)4.635 km81 km (51 mi) to the WBering Sea, 23 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoApr 2, 11:22 pm (GMT -9)5.110 km70 km (44 mi) to the WBering Sea, 19 mi east of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoMar 24, 11:59 am (GMT -9)5.210 km65 km (40 mi) to the WBering Sea, 23 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoMar 4, 07:54 am (GMT -10)6.410 km69 km (43 mi) to the WBering Sea, 20 mi east of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJan 14, 10:52 pm (GMT -10)5.941 km57 km (36 mi) to the SWBering Sea, 55 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United States 1 reportInfoMar 30, 2024 04:28 pm (GMT +0)5.8109 km72 km (45 mi) to the E 225 mi east of Attu Station, Aleutians West Census Area, Alaska, United StatesInfoDec 14, 2022 09:40 am (Adak)6.373 km103 km (64 mi) to the SE Rat Islands, Aleutian Islands, Alaska 1 reportInfoJun 4, 2022 02:38 pm (Adak)6.3105 km64 km (40 mi) to the EBering 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 km50 km (31 mi) to the EBering Sea, 10.7 mi north of Segula Island, Aleutians West Census Area, Alaska, United States 2 reportsInfoOct 8, 2017 12:34 pm (GMT -10)6.5119 km50 km (31 mi) to the NWBering Sea, 42 mi northwest of Kiska Island, Aleutians West Census Area, Alaska, United StatesInfoJun 23, 2014 05:15 pm (GMT -10)6.34 km45 km (28 mi) to the W 248 km ESE of Attu Station, Alaska 1 reportInfoJun 23, 2014 03:52 pm (Adak)5.8100 km79 km (49 mi) to the E Rat Islands, Aleutian Islands, AlaskaInfoJun 23, 2014 01:29 pm (Adak)5.8105 km88 km (55 mi) to the EBering Sea, 236 mi east of Attu Station, Aleutians West Census Area, Alaska, United StatesInfoJun 23, 2014 12:11 pm (Adak)6.0100 km79 km (49 mi) to the E Rat Islands, Aleutian IslandsInfoJun 23, 2014 08:53 pm (GMT +0)7.9109 km100 km (62 mi) to the EBering Sea, 244 mi east of Attu Station, Aleutians West Census Area, Alaska, United States 1 reportInfoOct 30, 2011 09:16 pm (GMT -10)5.8159 km49 km (31 mi) to the NEBering Sea, 85 mi east of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJul 1, 2006 05:53 pm (GMT -10)5.88.6 km52 km (32 mi) to the SWBering Sea, 62 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJun 27, 2006 02:39 am (GMT +0)6.217 km82 km (51 mi) to the WBering Sea, 13 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJun 13, 2006 07:46 pm (Adak)6.029 km23 km (14 mi) to the SWBering Sea, 58 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJun 14, 2006 04:18 am (GMT +0)6.514 km43 km (27 mi) to the SWBering Sea, 65 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoNov 16, 2003 08:43 pm (GMT -10)7.833 km140 km (87 mi) to the SEBering Sea, 97 mi west of Amatignak Island, Aleutians West Census Area, Alaska, United StatesInfoJun 23, 2003 02:12 am (GMT -10)6.920 km84 km (52 mi) to the SWBering Sea, 73 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJun 15, 2003 09:24 am (GMT -10)6.520 km68 km (42 mi) to the SWBering Sea, 70 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoMar 17, 2003 06:36 am (GMT -10)7.133 km103 km (64 mi) to the SEBering Sea, 115 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoMar 8, 1988 06:27 am (GMT -10)5.833 km92 km (57 mi) to the SBering Sea, 81 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoMay 9, 1985 09:05 am (GMT -10)6.333 km82 km (51 mi) to the SEBering Sea, 105 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJul 30, 1982 08:29 pm (GMT -10)6.438 km91 km (57 mi) to the SWBering Sea, 43 mi south of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJan 29, 1981 10:52 pm (GMT -10)7.033 km84 km (52 mi) to the SWBering Sea, 45 mi south of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoOct 17, 1979 06:35 pm (Adak)6.062 km31 km (19 mi) to the SWBering Sea, 62 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoFeb 1, 1975 10:43 pm (GMT -10)7.610 km283 km (176 mi) to the NW 36 km NE of Attu Station, AlaskaInfoMar 29, 1965 04:27 pm (GMT -10)7.620 km208 km (129 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 km172 km (107 mi) to the SEBering Sea, 57 mi west of Amatignak Island, Aleutians West Census Area, Alaska, United StatesInfoFeb 3, 1965 07:01 pm (GMT -10)8.730 km134 km (84 mi) to the SEBering Sea, 94 mi west of Amatignak Island, Aleutians West Census Area, Alaska, United StatesInfoMay 27, 1963 02:08 pm (GMT -10)6.20 km16 km (10.2 mi) to the WBering Sea, 53 mi east of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoDec 29, 1961 03:39 pm (Adak)6.515 km34 km (21 mi) to the EBering Sea, 83 mi east of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJan 12, 1958 02:02 pm (GMT -10)6.5121 km51 km (32 mi) to the NWBering Sea, 34 mi east of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoOct 19, 1956 11:47 am (Adak)6.425 km16 km (9.8 mi) to the E 191 mi east of Attu Station, Aleutians West Census Area, Alaska, United StatesInfoSep 16, 1950 09:58 pm (GMT +0)6.6100 km26 km (16 mi) to the SWBering Sea, 52 mi southeast of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoJul 13, 1940 08:52 pm (Adak)7.465 km60 km (37 mi) to the EBering Sea, 100 mi east of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoApr 16, 1940 06:43 am (Universal Time)7.030 km270 km (168 mi) to the WBering Sea, 15 mi east of Attu Station, Aleutians West Census Area, Alaska, United StatesInfoApr 16, 1940 06:07 am (Universal Time)7.030 km243 km (151 mi) to the WBering Sea, 16 mi southeast of Agattu Island, Aleutians West Census Area, Alaska, United StatesInfoSep 8, 1939 12:04 pm (Universal Time)7.215 km206 km (128 mi) to the SWNorth Pacific Ocean, 103 mi southwest of Buldir Island, Aleutians West Census Area, Alaska, United StatesInfoAug 17, 1906 12:11 am (Universal Time)8.3110 km64 km (40 mi) to the SEBering 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]