Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 30-01-2021 and time 09:26:38 (UTC) in region 3 km SW Accumoli (RI)

A magnitude ML 1.9 earthquake occured in region: 3 km SW Accumoli (RI), on

  • 30-01-2021 09:26:38 (UTC)
  • 30-01-2021 10:26:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6780, 13.2180 at 10 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 3 667 667
Amatrice RI 8 2657 3324
Cittareale RI 8 482 3806
Arquata del Tronto AP 12 1178 4984
Norcia PG 16 4957 9941
Montereale AQ 17 2581 12522
Cascia PG 17 3217 15739
Campotosto AQ 18 542 16281
Acquasanta Terme AP 19 2916 19197
Capitignano AQ 19 665 19862
Borbona RI 20 617 20479
Posta RI 20 694 21173

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of L'Aquila (69753 inhabitants)
40 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km W of Chieti (51815 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
96 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 1.9 2021-01-30
09:26:38		 42.6782 13.2182 10 2021-07-12
16:54:59		 Bollettino Sismico Italiano INGV 87236801
Reviewed
Rev100 		ML 1.9 2021-01-30
09:26:38		 42.6782 13.2202 10 2021-01-30
09:34:26		 Sala Sismica INGV-Roma 86709771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-30 09:26:38 ± 0.06
Latitude 42.6782 ± 0.0036
Longitude 13.2182 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87236801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 448
Semi-minor axis of confidence ellipse (meter) 321
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
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) 50
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 53
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.66010
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 86709771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-30 09:34:26

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 87236801
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-17 11:06:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.APEC.HHZ. 2021-01-30T09:27:10.14 3.0 undecidable manual S -3.53 0
IV.ATCC.EHZ. 2021-01-30T09:27:01.47 0.3 undecidable manual S 320 73.2711 50 1.23 45
IV.EL6.EHZ. 2021-01-30T09:27:01.32 0.3 undecidable manual S 353 72.8715 50 1.2 46
IV.VCEL.EHZ. 2021-01-30T09:26:57.96 0.3 undecidable manual S 122 59.7957 50 1.31 44
IV.CESX.HHZ. 2021-01-30T09:26:54.95 0.6 undecidable manual S 262 52.1034 50 0.36 45
IV.CSP1.EHZ. 2021-01-30T09:26:53.17 0.3 undecidable manual S 359 45.9207 50 0.24 69
IV.FIAM.HHZ. 2021-01-30T09:26:53.03 0.6 undecidable manual S 190 46.2204 50 0.01 49
IV.GUMA.HHZ. 2021-01-30T09:26:52.94 0.6 undecidable manual S 13 43.7229 50 0.6 42
IV.CESI.HHZ. 2021-01-30T09:26:52.59 0.6 undecidable manual S 325 44.3223 50 0.08 48
IV.ARRO.EHZ. 2021-01-30T09:26:51.01 0.6 undecidable manual S 254 38.5281 50 0.05 49
IV.FDMO.HHZ. 2021-01-30T09:26:51.60 0.6 undecidable manual S 345 41.1255 50 -0.06 48
IV.ATCC.EHZ. 2021-01-30T09:26:51.10 0.1 undecidable manual P 320 73.2711 50 0.25 88
IV.MF5.EHZ. 2021-01-30T09:26:51.92 0.6 undecidable manual S 30 39.5271 50 0.68 41
IV.EL6.EHZ. 2021-01-30T09:26:50.65 0.1 undecidable manual P 353 72.8715 50 -0.14 90
IT.MTCL.HGZ. 2021-01-30T09:26:50.89 0.3 undecidable manual S 333 39.3273 50 -0.28 70
IV.GIGS.HHN. 2021-01-30T09:26:50.38 0.3 undecidable manual S 131 38.2284 50 -0.51 66
IV.FEMA.HNE. 2021-01-30T09:26:49.63 0.3 undecidable manual S 337 34.3434 50 -0.22 71
IV.VCEL.EHZ. 2021-01-30T09:26:49.36 0.3 undecidable manual P 122 59.7957 50 0.58 62
IV.T0110.HHZ. 2021-01-30T09:26:49.78 0.6 undecidable manual P 137 67.5768 50 -0.19 45
IV.ASSB.HHZ. 2021-01-30T09:26:49.06 0.3 undecidable manual P 312 60.8946 50 0.12 69
IV.MOMA.HHZ. 2021-01-30T09:26:48.17 3.0 negative manual P 0.08 0
IV.TERO.HHZ. 2021-01-30T09:26:48.43 0.6 undecidable manual S 101 32.0457 50 -0.81 40
IV.MMO1.EHZ. 2021-01-30T09:26:47.12 0.6 undecidable manual S 20 26.0517 50 -0.52 45
IV.CESX.HHZ. 2021-01-30T09:26:47.41 0.3 undecidable manual P 262 52.1034 50 -0.18 70
IV.MC2.EHZ. 2021-01-30T09:26:47.42 0.6 undecidable manual S 355 25.9518 50 -0.19 48
IV.OFFI.HHZ. 2021-01-30T09:26:47.57 0.3 undecidable manual P 53 47.5191 50 0.69 61
IV.GAVE.EHZ. 2021-01-30T09:26:47.58 0.6 undecidable manual S 273 26.4513 50 -0.17 49
IV.FIAM.HHZ. 2021-01-30T09:26:46.53 0.1 undecidable manual P 190 46.2204 50 -0.15 94
IV.CESI.HHZ. 2021-01-30T09:26:46.13 0.1 negative manual P 325 44.3223 50 -0.26 92
IV.CSP1.EHZ. 2021-01-30T09:26:46.37 0.1 undecidable manual P 359 45.9207 50 -0.26 92
IV.GUMA.HHZ. 2021-01-30T09:26:46.41 0.1 undecidable manual P 13 43.7229 50 0.12 95
IV.CAMP.HHZ. 2021-01-30T09:26:46.15 0.6 undecidable manual S 135 22.1556 115 -0.35 47
IV.MF5.EHZ. 2021-01-30T09:26:45.79 0.1 undecidable manual P 30 39.5271 50 0.13 96
IV.NRCA.HNZ. 2021-01-30T09:26:45.13 0.6 undecidable manual S 334 19.1697 118 -0.44 47
IV.ARRO.EHZ. 2021-01-30T09:26:45.33 0.1 undecidable manual P 254 38.5281 50 -0.17 95
IV.RM33.EHZ. 2021-01-30T09:26:45.32 0.6 undecidable manual S 181 18.7701 118 -0.11 50
IV.FDMO.HHZ. 2021-01-30T09:26:45.61 0.1 undecidable manual P 345 41.1255 50 -0.29 92
IT.MTCL.HGZ. 2021-01-30T09:26:45.28 0.1 undecidable manual P 333 39.3273 50 -0.33 92
IV.GIGS.HHN. 2021-01-30T09:26:44.96 0.3 undecidable manual P 131 38.2284 50 -0.49 67
IV.LNSS.HHZ. 2021-01-30T09:26:44.97 0.6 undecidable manual S 240 16.7721 121 0.15 50
IV.TERO.HHZ. 2021-01-30T09:26:44.09 0.6 undecidable manual P 101 32.0457 50 -0.41 46
IV.FEMA.HNE. 2021-01-30T09:26:44.83 0.3 undecidable manual P 337 34.3434 50 -0.02 74
IV.MTRA.HNZ. 2021-01-30T09:26:44.39 0.6 undecidable manual S 59 16.9719 121 -0.49 46
IV.GAVE.EHZ. 2021-01-30T09:26:43.48 0.1 positive manual P 273 26.4513 50 -0.16 98
IV.MMO1.EHZ. 2021-01-30T09:26:43.26 0.1 positive manual P 20 26.0517 50 -0.31 94
IV.SMA1.EHZ. 2021-01-30T09:26:43.40 0.6 undecidable manual S 119 10.878 133 0.19 50
IV.MC2.EHZ. 2021-01-30T09:26:43.41 0.1 undecidable manual P 355 25.9518 50 -0.15 98
IV.T1299.HNN. 2021-01-30T09:26:42.62 0.3 undecidable manual S 133 7.1928 145 0.28 74
IV.RM33.EHZ. 2021-01-30T09:26:42.41 0.1 negative manual P 181 18.7701 118 0.11 100
IV.CAMP.HHZ. 2021-01-30T09:26:42.78 0.1 negative manual P 135 22.1556 115 -0.13 99
IV.LNSS.HHZ. 2021-01-30T09:26:42.13 0.1 positive manual P 240 16.7721 121 0.18 99
IV.NRCA.HNZ. 2021-01-30T09:26:42.27 0.1 negative manual P 334 19.1697 118 -0.11 100
IV.SMA1.EHZ. 2021-01-30T09:26:41.26 0.1 positive manual P 119 10.878 133 0.25 98
IV.MTRA.HNZ. 2021-01-30T09:26:41.87 0.1 positive manual P 59 16.9719 121 -0.11 100
IV.T1299.HNN. 2021-01-30T09:26:40.88 0.1 negative manual P 133 7.1928 145 0.36 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:2.2 0.001745 1.54 AML other m 2021-01-30T09:26:43.86
IV.SMA1.EHE. ML:2.2 0.00188 1.66 AML other m 2021-01-30T09:26:43.94
IV.MTRA.HNN. ML:2.1 0.0010625 0.98 AML other m 2021-01-30T09:26:44.12
IV.MTRA.EHN. ML:2.1 0.0010595 0.98 AML other m 2021-01-30T09:26:44.12
IV.LNSS.HHE. ML:2.3 0.001645 0.36 AML other m 2021-01-30T09:26:45.28
IV.MTRA.EHE. ML:2.0 0.0009365 1 AML other m 2021-01-30T09:26:45.12
IV.MTRA.HNE. ML:2.0 0.0009080000000000001 1 AML other m 2021-01-30T09:26:45.12
IV.LNSS.HHN. ML:2.2 0.001415 0.34 AML other m 2021-01-30T09:26:45.32
IV.NRCA.HHN. ML:2.4 0.0020700000000000002 0.1 AML other m 2021-01-30T09:26:45.24
IV.NRCA.HNN. ML:2.4 0.0017850000000000001 0.1 AML other m 2021-01-30T09:26:45.25
IV.NRCA.HHE. ML:2.4 0.0020800000000000003 0.1 AML other m 2021-01-30T09:26:45.64
IV.NRCA.HNE. ML:2.4 0.002005 0.12 AML other m 2021-01-30T09:26:45.59
IV.RM33.HNN. ML:2.1 0.0010840000000000001 0.16 AML other m 2021-01-30T09:26:45.75
IV.RM33.EHN. ML:2.1 0.0010735 0.18 AML other m 2021-01-30T09:26:45.75
IV.CAMP.HHE. ML:1.3 0.00014749999999999998 0.88 AML other m 2021-01-30T09:26:46.32
IV.RM33.HNE. ML:2.1 0.001024 0.18 AML other m 2021-01-30T09:26:47.11
IV.RM33.EHE. ML:2.1 0.001009 0.18 AML other m 2021-01-30T09:26:47.03
IV.GAVE.EHN. ML:2.2 0.0009319999999999999 0.24 AML other m 2021-01-30T09:26:47.91
IV.GAVE.EHE. ML:2.1 0.0007700000000000001 0.18 AML other m 2021-01-30T09:26:48.24
IV.TERO.HHN. ML:2.0 0.000435 0.3 AML other m 2021-01-30T09:26:49.13
IV.TERO.HHE. ML:2.0 0.00041349999999999997 1.04 AML other m 2021-01-30T09:26:49.22
IV.CAMP.HHN. ML:1.2 0.0001027 0.54 AML other m 2021-01-30T09:26:50.53
IV.ARRO.EHE. ML:1.6 0.000131 0.7 AML other m 2021-01-30T09:26:51.49
IV.ARRO.EHN. ML:1.5 0.0001212 0.14 AML other m 2021-01-30T09:26:52.30
IV.FDMO.HHN. ML:1.5 0.000111 0.36 AML other m 2021-01-30T09:26:52.18
IV.MF5.EHE. ML:1.6 0.0001515 0.96 AML other m 2021-01-30T09:26:53.12
IV.FDMO.HHE. ML:1.5 0.00010250000000000001 0.18 AML other m 2021-01-30T09:26:53.12
IV.FIAM.HHN. ML:1.5 0.00009615 0.7 AML other m 2021-01-30T09:26:53.50
IV.GUMA.HHE. ML:2.2 0.000563 0.24 AML other m 2021-01-30T09:26:53.20
IV.CESI.HHN. ML:1.6 0.0001325 0.86 AML other m 2021-01-30T09:26:53.71
IV.MF5.EHN. ML:1.7 0.00017925000000000002 1.16 AML other m 2021-01-30T09:26:53.92
IV.CESI.HHE. ML:1.5 0.00010515 0.34 AML other m 2021-01-30T09:26:53.90
IV.CSP1.EHN. ML:2.1 0.0003785 1.4 AML other m 2021-01-30T09:26:54.70
IV.CSP1.EHE. ML:2.1 0.000356 0.56 AML other m 2021-01-30T09:26:54.32
IV.FIAM.HHE. ML:1.4 0.00006309999999999999 0.78 AML other m 2021-01-30T09:26:54.57
IV.GUMA.HHN. ML:2.2 0.000448 0.44 AML other m 2021-01-30T09:26:54.41
IV.CESX.HHN. ML:1.4 0.00006925 0.22 AML other m 2021-01-30T09:26:56.27
IV.MOMA.HHE. ML:1.9 0.0001725 0.94 AML other m 2021-01-30T09:26:57.16
IV.MOMA.HHN. ML:1.9 0.0001985 1.58 AML other m 2021-01-30T09:26:57.85
IV.ASSB.HHE. ML:1.6 0.00009165 1.06 AML other m 2021-01-30T09:26:58.68
IV.ASSB.HHN. ML:1.6 0.00009095 0.3 AML other m 2021-01-30T09:26:59.67
IV.EL6.EHE. ML:1.8 0.00009295000000000001 0.7 AML other m 2021-01-30T09:27:02.63
IV.ATCC.EHE. ML:1.7 0.0000769 1.26 AML other m 2021-01-30T09:27:03.09
IV.ATCC.EHN. ML:1.6 0.00007045 0.58 AML other m 2021-01-30T09:27:03.21
IV.CESX.HHE. ML:1.4 0.0000636 0.42 AML other m 2021-01-30T09:27:04.57
IV.EL6.EHN. ML:1.8 0.00009755 1.34 AML other m 2021-01-30T09:27:05.26
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