Earthquake with magnitude of ML 1.1 on date 31-05-2020 and time 02:12:14 (UTC) in region 8 km NW Accumoli (RI)

A magnitude ML 1.1 earthquake occured in region: 8 km NW Accumoli (RI), on

  • 31-05-2020 02:12:14 (UTC)
  • 31-05-2020 04:12:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7500, 13.1930 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Accumoli RI 8 667 667
Arquata del Tronto AP 9 1178 1845
Norcia PG 9 4957 6802
Cittareale RI 15 482 7284
Cascia PG 15 3217 10501
Montegallo AP 16 523 11024
Amatrice RI 16 2657 13681
Castelsantangelo sul Nera MC 16 281 13962
Acquasanta Terme AP 18 2916 16878
Preci PG 19 724 17602
Montemonaco AP 20 604 18206

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km W of Teramo (54892 inhabitants)
46 Km SE of Foligno (57155 inhabitants)
47 Km NW of L'Aquila (69753 inhabitants)
49 Km E of Terni (111501 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
89 Km W of Pescara (121014 inhabitants)
91 Km W of Chieti (51815 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
100 Km S of Ancona (100861 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 1.1 2020-05-31
02:12:14
42.7503 13.1927 11 2020-11-19
12:36:54
Bollettino Sismico Italiano INGV 81366761
Reviewed
Rev100
ML 1.0 2020-05-31
02:12:14
42.7495 13.1943 10 2020-05-31
02:21:35
Sala Sismica INGV-Roma 79738731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-31 02:12:14 ± 0.04
Latitude 42.7503 ± 0.0018
Longitude 13.1927 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81366761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 325
Semi-minor axis of confidence ellipse (meter) 129
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 71
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.42898
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 79738731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-31 02:21:35

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 81366761
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-26 12:18:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LAV9.HHZ. 2020-05-31T02:12:48.24 3.0 undecidable manual S -4.23 0
IV.CSP1.EHZ. 2020-05-31T02:12:27.18 0.3 undecidable manual S 2 37.9287 50 0.25 69
IV.ARRO.EHZ. 2020-05-31T02:12:27.12 0.3 undecidable manual S 242 39.627 50 -0.28 68
IV.CESI.HHZ. 2020-05-31T02:12:26.47 0.3 undecidable manual S 320 36.6411 50 -0.14 70
IV.TERO.HHZ. 2020-05-31T02:12:26.28 0.3 undecidable manual S 113 36.4413 50 -0.25 68
IV.FDMO.HHZ. 2020-05-31T02:12:25.52 0.3 undecidable manual S 345 32.8449 50 -0.07 72
IV.CAMP.HHE. 2020-05-31T02:12:24.56 0.3 undecidable manual S 143 29.6481 50 -0.17 70
IT.MTCL.HGZ. 2020-05-31T02:12:24.89 0.6 undecidable manual S 330 31.2465 50 -0.27 46
IV.MNTT.EHZ. 2020-05-31T02:12:23.71 0.6 undecidable manual P 43 47.619 50 0.61 41
IV.RM33.EHZ. 2020-05-31T02:12:23.97 0.3 undecidable manual S 176 26.8509 50 -0.01 73
IV.FEMA.HNE. 2020-05-31T02:12:23.74 0.3 undecidable manual S 334 26.2515 50 -0.07 72
IV.LNSS.HHZ. 2020-05-31T02:12:22.22 0.3 undecidable manual S 217 20.5683 50 -0.08 73
IV.TERO.HHZ. 2020-05-31T02:12:21.33 0.1 undecidable manual P 113 36.4413 50 -0.05 95
IV.SMA1.EHZ. 2020-05-31T02:12:21.29 0.3 undecidable manual S 139 17.6712 50 -0.24 71
IV.T1299.HNN. 2020-05-31T02:12:21.02 0.3 undecidable manual S 150 14.7741 127 0.3 70
IV.CESI.HHZ. 2020-05-31T02:12:21.48 0.1 positive manual P 320 36.6411 50 0.06 95
IV.MC2.EHZ. 2020-05-31T02:12:21.63 0.3 undecidable manual S 359 17.871 50 0.04 74
IV.CSP1.EHZ. 2020-05-31T02:12:21.78 0.1 undecidable manual P 2 37.9287 50 0.17 93
IV.MMO1.EHZ. 2020-05-31T02:12:21.90 0.3 undecidable manual S 33 19.869 50 -0.2 71
IV.ARRO.EHZ. 2020-05-31T02:12:21.77 0.1 undecidable manual P 242 39.627 50 -0.11 94
IV.MTRA.EHZ. 2020-05-31T02:12:20.89 0.3 undecidable manual S 87 16.6722 123 -0.35 70
IT.MTCL.HGZ. 2020-05-31T02:12:20.78 1.0 undecidable manual P 330 31.2465 50 0.2 23
IV.CAMP.HHE. 2020-05-31T02:12:20.32 0.1 undecidable manual P 143 29.6481 50 -0.01 97
IV.FDMO.HHZ. 2020-05-31T02:12:20.95 0.1 undecidable manual P 345 32.8449 50 0.12 95
IV.FEMA.HNE. 2020-05-31T02:12:20.04 0.1 undecidable manual P 334 26.2515 50 0.24 94
IV.LNSS.HHZ. 2020-05-31T02:12:19.10 0.1 positive manual P 217 20.5683 50 0.17 96
IV.RM33.EHZ. 2020-05-31T02:12:19.99 0.1 undecidable manual P 176 26.8509 50 0.09 97
IV.NRCA.HHZ. 2020-05-31T02:12:19.30 0.3 undecidable manual S 325 11.1777 134 -0.47 69
IV.MMO1.EHZ. 2020-05-31T02:12:18.81 0.1 negative manual P 33 19.869 50 -0.01 99
IV.MTRA.EHZ. 2020-05-31T02:12:18.31 0.1 undecidable manual P 87 16.6722 123 -0.01 100
IV.SMA1.EHZ. 2020-05-31T02:12:18.56 0.1 positive manual P 139 17.6712 50 0.07 98
IV.T1299.HNN. 2020-05-31T02:12:18.33 0.1 positive manual P 150 14.7741 127 0.31 94
IV.MC2.EHZ. 2020-05-31T02:12:18.62 0.1 negative manual P 359 17.871 50 0.1 97
IV.NRCA.HHZ. 2020-05-31T02:12:17.48 0.1 positive manual P 325 11.1777 134 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0.9 0.00006994999999999999 0.62 AML other m 2020-05-31T02:12:27.30
IV.NRCA.HHE. ML:1.8 0.0008155 0.14 AML other m 2020-05-31T02:12:19.51
IV.MTRA.EHE. ML:1.4 0.00020750000000000003 0.32 AML other m 2020-05-31T02:12:21.22
IV.MTRA.EHN. ML:1.3 0.0001715 0.2 AML other m 2020-05-31T02:12:21.41
IV.LNSS.HHN. ML:1.5 0.00022250000000000001 1.08 AML other m 2020-05-31T02:12:22.60
IV.LNSS.HHE. ML:1.7 0.0003735000000000001 0.36 AML other m 2020-05-31T02:12:22.93
IV.RM33.EHN. ML:0.9 0.000047350000000000006 0.1 AML other m 2020-05-31T02:12:24.52
IV.SMA1.EHN. ML:0.8 0.00005405 0.8 AML other m 2020-05-31T02:12:24.97
IV.RM33.EHE. ML:1.0 0.00004765 0.52 AML other m 2020-05-31T02:12:24.99
IV.FDMO.HHN. ML:0.7 0.00002135 0.28 AML other m 2020-05-31T02:12:26.38
IV.CESI.HHE. ML:0.9 0.000028499999999999998 1.14 AML other m 2020-05-31T02:12:26.98
IV.FDMO.HHE. ML:0.7 0.00002035 0.12 AML other m 2020-05-31T02:12:27.22
IV.CESI.HHN. ML:0.9 0.0000314 1.24 AML other m 2020-05-31T02:12:27.07
IV.TERO.HHN. ML:0.9 0.000028749999999999997 0.48 AML other m 2020-05-31T02:12:28.29
IV.TERO.HHE. ML:0.8 0.00002255 0.28 AML other m 2020-05-31T02:12:29.10
IV.NRCA.HNE. ML:1.8 0.0007722557 0.1296 AML other m 2020-05-31T02:12:19.52
IV.NRCA.HNN. ML:1.6 0.0004033076 0.0896 AML other m 2020-05-31T02:12:19.51
IV.MTRA.HNE. ML:1.3 0.00015686577000000002 0.1312 AML other m 2020-05-31T02:12:21.22
IV.MTRA.HNN. ML:1.3 0.00018152275 0.2096 AML other m 2020-05-31T02:12:21.51
IV.LNSS.HNE. ML:1.6 0.00030694515 0.1104 AML other m 2020-05-31T02:12:22.93
IV.LNSS.HNN. ML:1.4 0.0001772337 0.1392 AML other m 2020-05-31T02:12:22.98
IV.RM33.HNN. ML:1.0 0.000055910809999999994 0.1184 AML other m 2020-05-31T02:12:24.52
IV.RM33.HNE. ML:1.0 0.000056791409999999994 0.1104 AML other m 2020-05-31T02:12:24.83
IV.ARRO.EHN. ML:0.6 0.000015974969999999997 0.2 AML other m 2020-05-31T02:12:29.01
IV.ARRO.EHE. ML:0.8 0.0000183114 0.16 AML other m 2020-05-31T02:12:29.22
IV.CSP1.EHN. ML:1.0 0.00003442691 0.16 AML other m 2020-05-31T02:12:28.05
IV.CSP1.EHE. ML:1.0 0.000037041709999999995 0.2384 AML other m 2020-05-31T02:12:27.89
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download