Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 31-01-2020 and time 02:02:26 (UTC) in region 1 km NW Accumoli (RI)

A magnitude ML 2.1 earthquake occured in region: 1 km NW Accumoli (RI), on

  • 31-01-2020 02:02:26 (UTC)
  • 31-01-2020 03:02:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7000, 13.2460 at 9 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.

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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 1 667 667
Amatrice RI 9 2657 3324
Arquata del Tronto AP 9 1178 4502
Cittareale RI 11 482 4984
Acquasanta Terme AP 16 2916 7900
Norcia PG 16 4957 12857
Montegallo AP 18 523 13380
Campotosto AQ 19 542 13922
Cascia PG 19 3217 17139
Montereale AQ 20 2581 19720

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Teramo (54892 inhabitants)
41 Km NW of L'Aquila (69753 inhabitants)
51 Km E of Terni (111501 inhabitants)
53 Km SE of Foligno (57155 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
84 Km W of Pescara (121014 inhabitants)
85 Km W of Chieti (51815 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
99 Km E of Viterbo (67173 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 2.1 2020-01-31
02:02:26		 42.7002 13.2457 9 2020-07-18
21:08:21		 Bollettino Sismico Italiano INGV 76630131
Reviewed
Rev100 		ML 2.1 2020-01-31
02:02:26		 42.7105 13.2618 11 2020-01-31
02:07:51		 Sala Sismica INGV-Roma 76052541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-31 02:02:26 ± 0.06
Latitude 42.7002 ± 0.0027
Longitude 13.2457 ± 0.0049
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76630131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 450
Semi-minor axis of confidence ellipse (meter) 130
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 251
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 85
Number of defining phases 84
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.07105
Epicentral distance of station farthest from the epicenter (degree) 1.64036
Number of stations at which the event was observed 44
Number of stations from which data was used for origin computation 44
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 68
Type of magnitude ML
Reference to an origin 76630131
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-18 14:21:21

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 72
Type of magnitude ML
Reference to an origin 76052541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-31 02:07:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2020-01-31T02:03:00.23 0.6 undecidable manual S 328 109.113 50 1.6 22
IV.NARO.HHZ. 2020-01-31T02:03:00.74 0.6 undecidable manual S 332 114.4965 50 0.68 35
IV.LPEL.HHZ. 2020-01-31T02:02:57.87 1.0 undecidable manual S 133 105.6165 50 0.17 20
IV.MGAB.HHZ. 2020-01-31T02:02:56.76 0.6 undecidable manual S 285 95.238 50 1.84 19
IV.ATFO.HHZ. 2020-01-31T02:02:56.08 3.0 undecidable manual S 324 91.9413 50 2.03 0
IV.PTRJ.HHZ. 2020-01-31T02:02:55.48 0.6 undecidable manual P 144 182.0844 38 -0.72 27
IV.ARVD.HHZ. 2020-01-31T02:02:55.15 0.3 undecidable manual S 345 91.8414 50 1.12 45
IV.INTR.HHZ. 2020-01-31T02:02:54.81 0.3 undecidable manual S 145 93.5397 50 0.34 61
IV.SRES.HHZ. 2020-01-31T02:02:52.09 0.3 undecidable manual S 230 79.1652 50 1.46 38
IV.MURB.HHZ. 2020-01-31T02:02:52.97 1.0 undecidable manual S 317 85.5477 50 0.62 19
IV.FOSV.EHZ. 2020-01-31T02:02:50.69 0.3 undecidable manual S 329 76.7676 50 0.69 56
IV.ATCC.EHZ. 2020-01-31T02:02:49.73 0.6 undecidable manual S 318 72.8715 50 0.77 36
IV.T0110.HHZ. 2020-01-31T02:02:48.20 0.3 undecidable manual S 140 67.8765 50 0.57 60
IV.SNTG.HHZ. 2020-01-31T02:02:47.43 0.3 undecidable manual S 338 66.378 50 0.22 65
IV.VCEL.EHZ. 2020-01-31T02:02:46.18 0.3 undecidable manual S 125 59.2962 50 0.86 54
IV.NARO.HHZ. 2020-01-31T02:02:45.97 0.1 undecidable manual P 332 114.4965 50 0.04 82
IV.POFI.HHZ. 2020-01-31T02:02:45.38 0.6 undecidable manual P 160 115.4955 50 -0.72 34
IV.PIEI.HHZ. 2020-01-31T02:02:45.30 0.3 undecidable manual P 328 109.113 50 0.19 60
IV.MNTT.EHZ. 2020-01-31T02:02:44.30 0.3 undecidable manual S 35 49.2174 50 1.66 36
IV.CESX.HHZ. 2020-01-31T02:02:44.39 0.3 undecidable manual S 260 54.7008 50 0.28 66
IV.LPEL.HHZ. 2020-01-31T02:02:44.19 0.6 undecidable manual P 133 105.6165 50 -0.38 39
IV.FAGN.HHZ. 2020-01-31T02:02:44.69 0.3 undecidable manual S 150 55.5999 50 0.36 65
IV.ATFO.HHZ. 2020-01-31T02:02:43.00 0.3 undecidable manual P 324 91.9413 50 0.54 58
IV.OFFI.HHZ. 2020-01-31T02:02:43.03 0.3 undecidable manual S 54 44.3223 50 1.71 35
IV.MGAB.HHZ. 2020-01-31T02:02:43.35 0.6 undecidable manual P 285 95.238 50 0.39 40
IV.INTR.HHZ. 2020-01-31T02:02:42.23 0.1 undecidable manual P 145 93.5397 50 -0.48 78
IV.ARVD.HHZ. 2020-01-31T02:02:42.34 0.1 undecidable manual P 345 91.8414 50 -0.11 85
IV.SAP2.EHZ. 2020-01-31T02:02:42.14 0.3 undecidable manual S 16 45.7209 50 0.43 65
IV.FIAM.HHZ. 2020-01-31T02:02:42.40 0.3 undecidable manual S 192 49.1175 50 -0.2 68
IV.PF6.EHN. 2020-01-31T02:02:41.95 0.6 undecidable manual S 355 48.7179 50 -0.56 41
IV.CERT.HHZ. 2020-01-31T02:02:41.03 0.3 undecidable manual P 195 86.0472 50 -0.53 59
IV.MURB.HHZ. 2020-01-31T02:02:41.94 0.3 undecidable manual P 317 85.5477 50 0.46 60
IV.CESI.HHZ. 2020-01-31T02:02:40.90 0.3 undecidable manual S 321 43.7229 50 -0.28 67
IV.SRES.HHZ. 2020-01-31T02:02:40.50 0.1 undecidable manual P 230 79.1652 50 0.01 89
IV.GUMA.HHZ. 2020-01-31T02:02:40.72 0.3 undecidable manual S 10 40.9257 50 0.31 67
IV.CSP1.EHZ. 2020-01-31T02:02:40.76 0.3 undecidable manual S 356 43.623 50 -0.38 66
IV.ATCC.EHZ. 2020-01-31T02:02:39.33 0.1 undecidable manual P 318 72.8715 50 -0.19 87
IV.FDMO.HHZ. 2020-01-31T02:02:39.70 0.3 undecidable manual S 341 39.4272 50 -0.34 67
IV.FOSV.EHZ. 2020-01-31T02:02:39.88 0.1 undecidable manual P 329 76.7676 50 -0.25 85
MN.AQU.HNN. 2020-01-31T02:02:39.89 0.3 undecidable manual S 161 40.5261 50 -0.44 65
IV.ARRO.EHZ. 2020-01-31T02:02:39.86 0.3 undecidable manual S 251 41.4252 50 -0.69 60
IV.MF5.EHN. 2020-01-31T02:02:39.40 0.3 undecidable manual S 29 36.3414 50 0.19 70
IT.MTCL.HGZ. 2020-01-31T02:02:39.15 0.3 undecidable manual S 329 38.2284 50 -0.56 63
IV.T0110.HHZ. 2020-01-31T02:02:38.34 0.1 undecidable manual P 140 67.8765 50 -0.42 83
IV.GIGS.HHZ. 2020-01-31T02:02:38.84 0.3 undecidable manual S 136 38.2284 50 -0.88 56
IV.SNTG.HHZ. 2020-01-31T02:02:38.12 0.1 undecidable manual P 338 66.378 50 -0.4 84
IV.VCEL.EHZ. 2020-01-31T02:02:37.51 0.1 undecidable manual P 125 59.2962 50 0.09 91
IV.FEMA.HNE. 2020-01-31T02:02:37.87 1.0 undecidable manual S 331 33.1446 50 -0.48 22
IV.FAGN.HHZ. 2020-01-31T02:02:36.53 0.1 undecidable manual P 150 55.5999 50 -0.32 87
IV.GAVE.EHZ. 2020-01-31T02:02:36.86 0.3 undecidable manual S 268 28.6491 108 -0.22 70
IV.MNTT.EHZ. 2020-01-31T02:02:36.17 0.1 undecidable manual P 35 49.2174 50 0.3 89
IV.CESX.HHZ. 2020-01-31T02:02:36.46 0.1 undecidable manual P 260 54.7008 50 -0.26 88
IV.SAP2.EHZ. 2020-01-31T02:02:35.52 0.3 undecidable manual P 16 45.7209 50 0.18 68
IV.RM33.EHZ. 2020-01-31T02:02:35.16 0.3 undecidable manual S 187 21.3675 113 0.46 67
IV.FIAM.HHZ. 2020-01-31T02:02:35.57 0.1 undecidable manual P 192 49.1175 50 -0.28 89
IV.PF6.EHN. 2020-01-31T02:02:35.42 0.6 undecidable manual P 355 48.7179 50 -0.38 44
IV.OFFI.HHZ. 2020-01-31T02:02:35.47 0.1 undecidable manual P 54 44.3223 50 0.35 88
IV.MC2.EHZ. 2020-01-31T02:02:35.42 0.3 undecidable manual S 349 23.8539 111 -0.1 72
IV.GUMA.HHZ. 2020-01-31T02:02:34.55 0.1 undecidable manual P 10 40.9257 50 -0.04 95
IV.LNSS.HHZ. 2020-01-31T02:02:34.82 0.3 undecidable manual S 237 19.9689 115 0.57 65
IV.CSP1.EHZ. 2020-01-31T02:02:34.58 0.1 undecidable manual P 356 43.623 50 -0.43 87
IV.MMO1.EHZ. 2020-01-31T02:02:34.77 0.3 undecidable manual S 17 23.0547 112 -0.48 67
IV.CESI.HHZ. 2020-01-31T02:02:34.71 0.1 undecidable manual P 321 43.7229 50 -0.32 89
IV.CAMP.HHZ. 2020-01-31T02:02:34.78 0.3 undecidable manual S 144 22.5552 112 -0.32 69
MN.AQU.HNN. 2020-01-31T02:02:34.13 0.1 undecidable manual P 161 40.5261 50 -0.41 88
IV.ARRO.EHZ. 2020-01-31T02:02:34.44 0.1 undecidable manual P 251 41.4252 50 -0.23 91
IV.GIGS.HHZ. 2020-01-31T02:02:33.54 0.1 undecidable manual P 136 38.2284 50 -0.65 82
IV.MF5.EHN. 2020-01-31T02:02:33.83 0.1 undecidable manual P 29 36.3414 50 -0.06 95
IT.MTCL.HGZ. 2020-01-31T02:02:33.74 0.1 undecidable manual P 329 38.2284 50 -0.45 87
IV.FDMO.HHZ. 2020-01-31T02:02:33.87 0.1 undecidable manual P 341 39.4272 50 -0.5 86
IV.NRCA.HNZ. 2020-01-31T02:02:33.59 0.3 undecidable manual S 324 18.2706 117 -0.14 72
IV.FEMA.HNE. 2020-01-31T02:02:33.04 0.6 undecidable manual P 331 33.1446 50 -0.36 45
IV.GAVE.EHZ. 2020-01-31T02:02:32.52 0.1 positive manual P 268 28.6491 108 -0.14 95
IV.CAMP.HHZ. 2020-01-31T02:02:31.41 0.1 undecidable manual P 144 22.5552 112 -0.11 97
IV.T1299.HNN. 2020-01-31T02:02:31.47 0.3 undecidable manual S 158 7.881 139 0.63 65
IV.MC2.EHZ. 2020-01-31T02:02:31.67 0.1 negative manual P 349 23.8539 111 -0.09 97
IV.SMA1.EHZ. 2020-01-31T02:02:31.67 0.3 undecidable manual S 137 10.6782 131 0.16 73
IV.LNSS.HHZ. 2020-01-31T02:02:31.33 0.1 positive manual P 237 19.9689 115 0.3 93
IV.RM33.EHZ. 2020-01-31T02:02:31.71 0.1 positive manual P 187 21.3675 113 0.42 91
IV.MTRA.EHZ. 2020-01-31T02:02:31.93 0.3 undecidable manual S 63 13.7751 124 -0.46 68
IV.MMO1.EHZ. 2020-01-31T02:02:31.35 0.1 undecidable manual P 17 23.0547 112 -0.26 94
IV.NRCA.HNZ. 2020-01-31T02:02:30.78 0.1 negative manual P 324 18.2706 117 0.05 99
IV.MTRA.EHZ. 2020-01-31T02:02:29.97 0.1 undecidable manual P 63 13.7751 124 0.01 100
IV.T1299.HNN. 2020-01-31T02:02:29.63 0.1 undecidable manual P 158 7.881 139 0.57 89
IV.SMA1.EHZ. 2020-01-31T02:02:29.81 0.1 positive manual P 137 10.6782 131 0.36 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHN. ML:1.8 0.00011249999999999998 0.58 AML other m 2020-01-31T02:02:51.54
IV.NRCA.HHE. ML:2.6 0.003715 0.1 AML other m 2020-01-31T02:02:34.55
IV.LNSS.HHE. ML:2.4 0.001935 0.34 AML other m 2020-01-31T02:02:35.21
IV.LNSS.HNE. ML:2.4 0.001895 0.34 AML other m 2020-01-31T02:02:35.04
IV.RM33.HNN. ML:2.5 0.002145 0.14 AML other m 2020-01-31T02:02:35.50
IV.RM33.EHN. ML:2.5 0.002075 0.14 AML other m 2020-01-31T02:02:35.50
IV.GAVE.EHN. ML:2.4 0.00132 0.32 AML other m 2020-01-31T02:02:37.23
IV.GIGS.HHE. ML:1.4 0.0000877 0.1 AML other m 2020-01-31T02:02:39.69
IV.CESI.HNN. ML:2.2 0.0005700000000000001 0.38 AML other m 2020-01-31T02:02:41.47
IV.CSP1.EHE. ML:2.3 0.0006465 0.56 AML other m 2020-01-31T02:02:41.28
IV.CESI.HHN. ML:2.2 0.0005735 0.38 AML other m 2020-01-31T02:02:41.48
IV.CSP1.EHN. ML:2.4 0.0007355 0.54 AML other m 2020-01-31T02:02:42.35
IV.FIAM.HHN. ML:1.8 0.0001495 0.52 AML other m 2020-01-31T02:02:43.41
IV.CESI.HHE. ML:2.1 0.00036899999999999997 0.4 AML other m 2020-01-31T02:02:43.15
IV.CESI.HNE. ML:2.0 0.000321 0.4 AML other m 2020-01-31T02:02:43.15
IV.FIAM.HHE. ML:1.6 0.00011979999999999998 0.92 AML other m 2020-01-31T02:02:43.93
IV.OFFI.HHE. ML:2.5 0.0010329999999999998 0.46 AML other m 2020-01-31T02:02:43.72
IV.OFFI.HHN. ML:2.4 0.0008155 0.3 AML other m 2020-01-31T02:02:46.35
IV.SAP2.EHN. ML:2.9 0.002235 0.56 AML other m 2020-01-31T02:02:46.67
IV.CESX.HHN. ML:1.8 0.00015350000000000002 0.32 AML other m 2020-01-31T02:02:46.45
IV.CESX.HHE. ML:1.6 0.000107 0.62 AML other m 2020-01-31T02:02:46.59
IV.MNTT.EHN. ML:2.4 0.0005989999999999999 0.18 AML other m 2020-01-31T02:02:47.11
IV.MNTT.EHE. ML:2.4 0.0006205000000000001 0.28 AML other m 2020-01-31T02:02:48.05
IV.VCEL.EHN. ML:2.0 0.00023 1.02 AML other m 2020-01-31T02:02:48.70
IV.VCEL.EHE. ML:2.1 0.00028000000000000003 0.42 AML other m 2020-01-31T02:02:48.85
IV.FAGN.HHN. ML:2.2 0.00040649999999999996 1.56 AML other m 2020-01-31T02:02:48.93
IV.SNTG.HHN. ML:1.8 0.00011649999999999999 1.26 AML other m 2020-01-31T02:02:49.00
IV.SNTG.HHE. ML:1.8 0.0001185 0.5 AML other m 2020-01-31T02:02:49.30
IV.T0110.HHE. ML:2.1 0.0002195 0.42 AML other m 2020-01-31T02:02:49.71
IV.FAGN.HHE. ML:2.2 0.0003625 0.5 AML other m 2020-01-31T02:02:49.91
IV.T0110.HHN. ML:2.2 0.00029499999999999996 0.44 AML other m 2020-01-31T02:02:50.52
IV.ATCC.EHE. ML:1.9 0.0001215 1.56 AML other m 2020-01-31T02:02:52.81
IV.FOSV.EHN. ML:1.9 0.0001185 1.12 AML other m 2020-01-31T02:02:52.35
IV.FOSV.EHE. ML:1.7 0.0000767 1.36 AML other m 2020-01-31T02:02:52.68
IV.SRES.HHN. ML:1.6 0.00005535 0.36 AML other m 2020-01-31T02:02:54.02
IV.ARVD.HHE. ML:1.8 0.0000779 1.12 AML other m 2020-01-31T02:02:56.24
IV.ATFO.HHN. ML:1.8 0.00006610000000000001 1.72 AML other m 2020-01-31T02:02:56.13
IV.SRES.HHE. ML:1.7 0.00006645 0.5 AML other m 2020-01-31T02:02:57.85
IV.ARVD.HHN. ML:1.6 0.000049250000000000004 0.22 AML other m 2020-01-31T02:02:57.68
IV.ATFO.HHE. ML:1.7 0.00005945 0.2 AML other m 2020-01-31T02:03:01.26
IV.PIEI.HHN. ML:1.6 0.000037199999999999996 0.28 AML other m 2020-01-31T02:03:03.07
IV.INTR.HHE. ML:1.7 0.00005895 0.66 AML other m 2020-01-31T02:03:03.66
IV.PIEI.HHE. ML:1.8 0.00005145 0.42 AML other m 2020-01-31T02:03:04.28
IV.INTR.HHN. ML:1.8 0.00007605 0.68 AML other m 2020-01-31T02:03:07.11
IV.NARO.HHE. ML:1.6 0.00002815 0.9 AML other m 2020-01-31T02:03:10.91
IV.SMA1.EHN. ML:2.1 0.0017820085 0.1184 AML other m 2020-01-31T02:02:32.92
IV.SMA1.EHE. ML:2.3 0.0024756103999999998 0.0992 AML other m 2020-01-31T02:02:32.09
IV.NRCA.HNN. ML:2.4 0.0021881285 0.0896 AML other m 2020-01-31T02:02:33.91
IV.NRCA.HHN. ML:2.5 0.0025410515 0.0784 AML other m 2020-01-31T02:02:33.81
IV.LNSS.HNN. ML:2.2 0.00121636145 0.1296 AML other m 2020-01-31T02:02:36.42
IV.LNSS.HHN. ML:2.3 0.0016586465 0.2208 AML other m 2020-01-31T02:02:35.12
IV.CAMP.HHE. ML:2.2 0.0011731468 0.1392 AML other m 2020-01-31T02:02:34.96
IV.CAMP.HHN. ML:2.2 0.0011960036000000002 0.2 AML other m 2020-01-31T02:02:35.06
IV.RM33.EHE. ML:2.2 0.001295599 0.16 AML other m 2020-01-31T02:02:35.65
IV.RM33.HNE. ML:2.3 0.0013001844999999998 0.1504 AML other m 2020-01-31T02:02:35.65
IV.GAVE.HNN. ML:1.8 0.00033608535000000003 0.2688 AML other m 2020-01-31T02:02:37.23
IV.GAVE.HNE. ML:2.2 0.00082640565 0.1408 AML other m 2020-01-31T02:02:37.91
IV.GAVE.EHE. ML:2.2 0.00089929915 0.1408 AML other m 2020-01-31T02:02:37.92
IV.GIGS.HHN. ML:1.4 0.00009491614000000001 0.0992 AML other m 2020-01-31T02:02:39.63
IV.FDMO.HHN. ML:1.9 0.0002921746 0.2 AML other m 2020-01-31T02:02:40.00
IV.FDMO.HHE. ML:1.9 0.00029278315 0.3392 AML other m 2020-01-31T02:02:42.06
IV.ARRO.EHN. ML:1.9 0.0002546438 0.2992 AML other m 2020-01-31T02:02:42.19
IV.ARRO.EHE. ML:1.9 0.0002398549 0.2 AML other m 2020-01-31T02:02:41.99
IV.SAP2.EHE. ML:2.2 0.00042566095 0.24 AML other m 2020-01-31T02:02:45.41
IV.MURB.HHN. ML:2.0 0.00012861967500000002 0.3616 AML other m 2020-01-31T02:03:02.98
IV.MURB.HHE. ML:2.1 0.00016871809999999997 0.2416 AML other m 2020-01-31T02:02:58.00
IV.NARO.HHN. ML:1.4 0.0000222279 0.1216 AML other m 2020-01-31T02:03:03.71
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download