Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 01-04-2023 and time 19:31:41 (Italy) in region 6 km NE Cittareale (RI)

A magnitude ML 2.0 earthquake occured in region: 6 km NE Cittareale (RI), on

  • 01-04-2023 17:31:41 (UTC)
  • 01-04-2023 19:31:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6620, 13.1960 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 6 667 667
Cittareale RI 6 482 1149
Amatrice RI 8 2657 3806
Arquata del Tronto AP 15 1178 4984
Montereale AQ 16 2581 7565
Cascia PG 16 3217 10782
Norcia PG 17 4957 15739
Posta RI 17 694 16433
Borbona RI 17 617 17050
Capitignano AQ 18 665 17715
Campotosto AQ 18 542 18257
Monteleone di Spoleto PG 20 599 18856

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of L'Aquila (69753 inhabitants)
42 Km W of Teramo (54892 inhabitants)
46 Km E of Terni (111501 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km NE of Tivoli (56533 inhabitants)
86 Km W of Pescara (121014 inhabitants)
87 Km W of Chieti (51815 inhabitants)
93 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 2.0 2023-04-01
17:31:41		 42.6623 13.196 9 2024-03-01
17:18:04		 Bollettino Sismico Italiano INGV 116608311
Reviewed
Rev100 		ML 2.0 2023-04-01
17:31:40		 42.6587 13.2007 14 2023-04-01
17:39:31		 Sala Sismica INGV-Roma 115952611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-01 17:31:41 ± 0.06
Latitude 42.6623 ± 0.0027
Longitude 13.1960 ± 0.0037
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 116608311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 303
Semi-minor axis of confidence ellipse (meter) 239
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 213
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 54
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.92091
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 58
Type of magnitude ML
Reference to an origin 116608311
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-27 09:29:54

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 58
Type of magnitude ML
Reference to an origin 115952611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-01 17:39:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOCO.HHZ. 2023-04-01T17:32:17.08 3.0 undecidable manual P 2.2 0
IV.T0110.HHZ. 2023-04-01T17:32:02.16 0.3 undecidable manual S 135 67.5768 50 0.2 66
IV.ASSB.HHZ. 2023-04-01T17:32:00.44 0.3 undecidable manual S 314 60.6948 50 0.3 66
IV.VCEL.EHZ. 2023-04-01T17:32:00.53 0.3 undecidable manual S 119 60.495 50 0.46 64
IV.FRON.EHZ. 2023-04-01T17:31:59.53 0.1 undecidable manual P 338 102.2199 50 1.06 61
IV.MML1.EHZ. 2023-04-01T17:31:58.40 0.3 undecidable manual S 340 53.3022 50 0.25 67
IV.MOMA.HHZ. 2023-04-01T17:31:58.29 0.6 undecidable manual S 287 53.4021 50 0.12 46
IV.CESX.HHZ. 2023-04-01T17:31:57.64 0.3 undecidable manual S 263 50.1165 50 0.35 67
IV.MGAB.HHZ. 2023-04-01T17:31:57.63 0.1 undecidable manual P 288 92.5407 50 0.66 74
IV.MF5.EHZ. 2023-04-01T17:31:56.12 0.3 undecidable manual S 31 42.0246 50 0.98 53
IV.CSP1.EHZ. 2023-04-01T17:31:56.78 0.6 undecidable manual S 1 47.619 50 0.13 47
IV.GUMA.HHZ. 2023-04-01T17:31:56.85 0.3 undecidable manual S 14 45.8208 50 0.69 60
IV.CESI.HHZ. 2023-04-01T17:31:55.83 0.3 undecidable manual S 328 44.8218 50 -0.05 71
IV.FDMO.HHZ. 2023-04-01T17:31:55.21 0.6 undecidable manual S 348 42.4242 50 -0.05 48
IV.ATCC.EHZ. 2023-04-01T17:31:54.06 0.1 undecidable manual P 322 73.4709 50 0.02 91
IV.EL6.EHZ. 2023-04-01T17:31:54.19 1.0 undecidable manual P 354 74.37 50 0.02 23
IV.GIGS.HHZ. 2023-04-01T17:31:53.40 0.3 undecidable manual S 127 38.5281 50 -0.82 58
IV.T0110.HHZ. 2023-04-01T17:31:53.01 0.6 undecidable manual P 135 67.5768 50 -0.11 45
IV.VCEL.EHZ. 2023-04-01T17:31:52.18 0.1 undecidable manual P 119 60.495 50 0.15 91
IV.TERO.HHZ. 2023-04-01T17:31:52.10 0.3 undecidable manual S 97 33.5442 50 -0.79 59
IV.ARRO.EHZ. 2023-04-01T17:31:52.82 0.3 undecidable manual S 255 36.3414 50 -0.8 58
IV.MMO1.EHZ. 2023-04-01T17:31:51.14 0.3 undecidable manual S 22 28.3494 108 -0.25 71
IV.ASSB.HHZ. 2023-04-01T17:31:51.97 0.6 undecidable manual P 314 60.6948 50 -0.1 46
IV.GAVE.EHZ. 2023-04-01T17:31:50.06 0.3 undecidable manual S 278 24.8529 110 -0.17 72
IV.MOMA.HHZ. 2023-04-01T17:31:50.77 0.1 undecidable manual P 287 53.4021 50 -0.16 92
7F.SIB2.EHZ. 2023-04-01T17:31:50.50 0.6 undecidable manual S 19 26.8509 109 -0.39 46
IV.CESX.HHZ. 2023-04-01T17:31:50.11 0.1 undecidable manual P 263 50.1165 50 -0.32 89
IV.MML1.EHZ. 2023-04-01T17:31:50.94 0.1 undecidable manual P 340 53.3022 50 0.02 94
7F.SIB1.EHZ. 2023-04-01T17:31:50.69 0.3 undecidable manual S 13 26.4513 109 -0.07 73
IV.CESI.HHZ. 2023-04-01T17:31:49.35 0.1 undecidable manual P 328 44.8218 50 -0.26 91
IV.GUMA.HHZ. 2023-04-01T17:31:49.88 0.1 undecidable manual P 14 45.8208 50 0.11 94
IV.FDMO.HHZ. 2023-04-01T17:31:49.20 0.1 undecidable manual P 348 42.4242 50 -0.05 96
IV.MF5.EHZ. 2023-04-01T17:31:49.36 0.1 undecidable manual P 31 42.0246 50 0.18 93
IV.CSP1.EHZ. 2023-04-01T17:31:49.85 0.1 undecidable manual P 1 47.619 50 -0.2 92
7F.SIB3.EHZ. 2023-04-01T17:31:49.74 0.3 undecidable manual S 14 24.3534 111 -0.33 70
IV.CAMP.HHZ. 2023-04-01T17:31:49.38 0.6 undecidable manual S 129 22.3554 112 -0.04 50
IV.MTRA.EHZ. 2023-04-01T17:31:48.35 0.6 undecidable manual S 57 19.3695 115 -0.14 49
IV.NRCA.HHZ. 2023-04-01T17:31:48.56 0.3 undecidable manual S 341 20.1687 114 -0.16 73
IV.GIGS.HHZ. 2023-04-01T17:31:48.32 0.1 undecidable manual P 127 38.5281 50 -0.33 91
IV.TERO.HHZ. 2023-04-01T17:31:47.40 0.1 positive manual P 97 33.5442 50 -0.48 89
IV.LNSS.HHZ. 2023-04-01T17:31:47.23 0.3 undecidable manual S 243 14.2746 123 0.29 72
IV.ARRO.EHZ. 2023-04-01T17:31:47.87 0.1 undecidable manual P 255 36.3414 50 -0.44 89
IV.RM33.EHZ. 2023-04-01T17:31:47.88 0.3 undecidable manual S 175 17.0718 118 0.11 74
7F.SIB3.EHZ. 2023-04-01T17:31:46.11 0.1 undecidable manual P 14 24.3534 111 -0.15 97
IV.GAVE.EHZ. 2023-04-01T17:31:46.18 0.1 positive manual P 278 24.8529 110 -0.17 96
7F.SIB2.EHZ. 2023-04-01T17:31:46.48 0.1 undecidable manual P 19 26.8509 109 -0.25 94
IV.MMO1.EHZ. 2023-04-01T17:31:46.86 0.1 undecidable manual P 22 28.3494 108 -0.16 96
IV.SMA1.EHZ. 2023-04-01T17:31:46.92 0.3 undecidable manual S 107 11.877 128 0.67 64
7F.SIB1.EHZ. 2023-04-01T17:31:46.61 0.1 undecidable manual P 13 26.4513 109 -0.05 98
IV.RM33.EHZ. 2023-04-01T17:31:45.08 0.1 undecidable manual P 175 17.0718 118 0.15 98
IV.NRCA.HHZ. 2023-04-01T17:31:45.45 0.1 undecidable manual P 341 20.1687 114 -0.02 100
IV.CAMP.HHZ. 2023-04-01T17:31:45.86 0.3 negative manual P 129 22.3554 112 -0.02 75
IV.MTRA.EHZ. 2023-04-01T17:31:45.38 0.1 undecidable manual P 57 19.3695 115 0.04 100
IV.SMA1.EHZ. 2023-04-01T17:31:44.56 0.1 undecidable manual P 107 11.877 128 0.51 91
IV.LNSS.HHZ. 2023-04-01T17:31:44.66 0.1 positive manual P 243 14.2746 123 0.21 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:2.8 0.007415 0.28 AML other m 2023-04-01T17:31:47.24
IV.SMA1.EHN. ML:2.4 0.0032800000000000004 0.42 AML other m 2023-04-01T17:31:47.31
IV.RM33.EHE. ML:2.2 0.0014750000000000002 0.56 AML other m 2023-04-01T17:31:47.70
IV.LNSS.HHE. ML:2.1 0.00133 0.14 AML other m 2023-04-01T17:31:48.32
IV.LNSS.HHN. ML:1.8 0.0007210000000000001 1.2 AML other m 2023-04-01T17:31:48.98
IV.RM33.EHN. ML:2.2 0.00135 0.92 AML other m 2023-04-01T17:31:48.55
IV.MTRA.EHN. ML:2.3 0.00146 1.12 AML other m 2023-04-01T17:31:48.63
IV.MTRA.HNN. ML:2.3 0.001495 1.14 AML other m 2023-04-01T17:31:48.63
IV.MTRA.HNE. ML:2.4 0.002205 0.92 AML other m 2023-04-01T17:31:49.07
IV.MTRA.EHE. ML:2.5 0.002255 0.92 AML other m 2023-04-01T17:31:49.08
IV.NRCA.HHN. ML:2.0 0.0007945 0.84 AML other m 2023-04-01T17:31:49.09
IV.GAVE.HNN. ML:1.8 0.00041049999999999995 0.66 AML other m 2023-04-01T17:31:50.37
IV.NRCA.HHE. ML:2.2 0.001325 0.1 AML other m 2023-04-01T17:31:50.27
IV.GAVE.EHN. ML:2.3 0.0013275 0.28 AML other m 2023-04-01T17:31:50.18
IV.CAMP.HHN. ML:1.7 0.00031699999999999995 0.24 AML other m 2023-04-01T17:31:50.40
IV.CAMP.HHE. ML:1.6 0.0002405 0.2 AML other m 2023-04-01T17:31:50.40
IV.GAVE.HNE. ML:2.3 0.0012864999999999999 0.16 AML other m 2023-04-01T17:31:50.55
IV.GAVE.EHE. ML:2.3 0.0013250000000000002 0.16 AML other m 2023-04-01T17:31:50.55
IV.MMO1.EHE. ML:1.8 0.0003415 0.32 AML other m 2023-04-01T17:31:51.56
IV.TERO.HHN. ML:2.1 0.0005769999999999999 1.2 AML other m 2023-04-01T17:31:52.14
IV.TERO.HNN. ML:2.2 0.000621 0.62 AML other m 2023-04-01T17:31:52.14
IV.TERO.HHE. ML:2.0 0.0004625 0.68 AML other m 2023-04-01T17:31:52.22
IV.GIGS.HHE. ML:1.3 0.00006984999999999999 0.32 AML other m 2023-04-01T17:31:53.60
IV.TERO.HNE. ML:2.0 0.00044699999999999997 1.5 AML other m 2023-04-01T17:31:54.87
IV.MMO1.EHN. ML:1.7 0.000257 0.58 AML other m 2023-04-01T17:31:54.21
IV.GIGS.HHN. ML:1.3 0.00007285 0.42 AML other m 2023-04-01T17:31:54.44
IV.ARRO.EHN. ML:1.7 0.00021349999999999999 1 AML other m 2023-04-01T17:31:54.62
IV.ARRO.EHE. ML:1.8 0.000243 0.2 AML other m 2023-04-01T17:31:55.20
IV.FDMO.HHN. ML:1.6 0.00011399999999999999 0.14 AML other m 2023-04-01T17:31:56.27
IV.MF5.EHN. ML:1.8 0.00018554999999999998 0.8 AML other m 2023-04-01T17:31:56.87
IV.MF5.EHE. ML:1.8 0.00021550000000000003 0.78 AML other m 2023-04-01T17:31:56.20
IV.GUMA.HHE. ML:2.4 0.000759 0.38 AML other m 2023-04-01T17:31:57.15
IV.GUMA.HNE. ML:2.3 0.0005809999999999999 0.32 AML other m 2023-04-01T17:31:57.17
IV.FDMO.HHE. ML:1.5 0.0001029 0.7 AML other m 2023-04-01T17:31:57.21
IV.GUMA.HNN. ML:2.2 0.0005015000000000001 0.54 AML other m 2023-04-01T17:31:57.61
IV.CSP1.EHN. ML:2.0 0.000287 0.34 AML other m 2023-04-01T17:31:57.53
IV.GUMA.HHN. ML:2.3 0.0005545 0.46 AML other m 2023-04-01T17:31:57.62
IV.CESI.HHE. ML:1.6 0.0001182 0.14 AML other m 2023-04-01T17:31:58.15
IV.CESI.HHN. ML:1.8 0.00021550000000000003 0.28 AML other m 2023-04-01T17:31:58.44
IV.CSP1.EHE. ML:2.1 0.000359 0.76 AML other m 2023-04-01T17:31:58.18
IV.MML1.EHN. ML:1.6 0.0001045 0.16 AML other m 2023-04-01T17:31:59.13
IV.MOMA.HHN. ML:1.2 0.00004035 0.82 AML other m 2023-04-01T17:31:59.88
IV.MOMA.HHE. ML:2.1 0.000316 0.24 AML other m 2023-04-01T17:31:59.70
IV.MOMA.HNE. ML:2.1 0.000336 0.26 AML other m 2023-04-01T17:31:59.70
IV.MOMA.HNN. ML:2.2 0.00034100000000000005 0.6 AML other m 2023-04-01T17:32:00.88
IV.MML1.EHE. ML:1.6 0.0000863 0.5 AML other m 2023-04-01T17:32:01.14
IV.ASSB.HHE. ML:1.7 0.00010185 0.7 AML other m 2023-04-01T17:32:01.32
IV.ASSB.HHN. ML:1.9 0.000152 0.18 AML other m 2023-04-01T17:32:02.32
IV.VCEL.EHN. ML:2.0 0.0001915 0.96 AML other m 2023-04-01T17:32:02.76
IV.VCEL.EHE. ML:1.9 0.000153 1.54 AML other m 2023-04-01T17:32:03.08
IV.T0110.HHN. ML:1.8 0.000113 1.4 AML other m 2023-04-01T17:32:04.03
IV.ATCC.EHN. ML:1.8 0.000091 1.54 AML other m 2023-04-01T17:32:05.83
IV.ATCC.EHE. ML:1.6 0.00006110000000000001 0.58 AML other m 2023-04-01T17:32:06.57
IV.T0110.HHE. ML:2.0 0.000153 0.32 AML other m 2023-04-01T17:32:09.01
IV.MGAB.HHN. ML:1.9 0.00009695000000000001 0.74 AML other m 2023-04-01T17:32:13.06
IV.MGAB.HHE. ML:1.9 0.00009475 0.68 AML other m 2023-04-01T17:32:16.28
IV.FRON.EHE. ML:1.5 0.00003015 0.44 AML other m 2023-04-01T17:32:21.56
IV.FRON.EHN. ML:1.7 0.00004765 1.52 AML other m 2023-04-01T17:32:22.17
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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