Earthquake with magnitude of ML 1.2 on date 02-04-2023 and time 01:40:43 (UTC) in region 8 km NE Amatrice (RI)

A magnitude ML 1.2 earthquake occured in region: 8 km NE Amatrice (RI), on

  • 02-04-2023 01:40:43 (UTC)
  • 02-04-2023 03:40:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6870, 13.3520 at 13 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
Amatrice RI 8 2657 2657
Accumoli RI 9 667 3324
Acquasanta Terme AP 10 2916 6240
Arquata del Tronto AP 11 1178 7418
Valle Castellana TE 13 977 8395
Campotosto AQ 14 542 8937
Rocca Santa Maria TE 14 537 9474
Cortino TE 15 656 10130
Montegallo AP 17 523 10653
Cittareale RI 17 482 11135
Crognaleto TE 19 1297 12432
Capitignano AQ 19 665 13097
Montereale AQ 20 2581 15678

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km W of Teramo (54892 inhabitants)
38 Km N of L'Aquila (69753 inhabitants)
59 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
75 Km W of Pescara (121014 inhabitants)
77 Km W of Chieti (51815 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km NE of Tivoli (56533 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 1.2 2023-04-02
01:40:43
42.6873 13.3518 13 2024-03-01
17:18:04
Bollettino Sismico Italiano INGV 116544951
Reviewed
Rev100
ML 1.2 2023-04-02
01:40:43
42.6898 13.3545 13 2023-04-02
01:58:04
Sala Sismica INGV-Roma 115959501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-02 01:40:43 ± 0.07
Latitude 42.6873 ± 0.0036
Longitude 13.3518 ± 0.0061
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116544951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 529
Semi-minor axis of confidence ellipse (meter) 138
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 74
Circular confidence region, given by single value of horizontal uncertainty (meter) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.50902
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 116544951
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-20 09:46:07

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 115959501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-02 01:58:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2023-04-02T01:41:06.83 3.0 undecidable manual S -0.16 0
IV.FDMO.HHZ. 2023-04-02T01:40:57.54 0.3 undecidable manual S 331 44.3223 94 0.01 72
IV.MF5.EHZ. 2023-04-02T01:40:55.63 0.1 undecidable manual S 15 34.4433 96 0.71 81
IV.GIGS.HHZ. 2023-04-02T01:40:54.06 0.1 undecidable manual S 145 31.6461 97 -0.1 96
IV.MML1.EHZ. 2023-04-02T01:40:53.25 0.3 undecidable manual P 327 56.499 93 -0.11 69
IV.LNSS.HHZ. 2023-04-02T01:40:53.25 0.1 undecidable manual S 250 27.0507 99 0.29 94
IV.RM33.EHZ. 2023-04-02T01:40:52.00 0.1 undecidable manual S 210 22.755 102 0.18 97
IV.CESI.HHZ. 2023-04-02T01:40:52.29 0.3 undecidable manual P 314 50.616 93 -0.17 69
IV.NRCA.HHZ. 2023-04-02T01:40:52.20 0.1 undecidable manual S 310 25.2525 100 -0.28 93
IV.MNTT.EHZ. 2023-04-02T01:40:52.51 0.3 undecidable manual P 25 46.0206 94 0.76 58
IV.TERO.HHZ. 2023-04-02T01:40:51.19 0.3 undecidable manual S 109 21.7671 103 -0.38 69
IV.CSP1.EHZ. 2023-04-02T01:40:51.62 0.1 undecidable manual P 345 46.4202 94 -0.19 92
IV.FDMO.HHZ. 2023-04-02T01:40:51.22 0.1 undecidable manual P 331 44.3223 94 -0.27 91
IV.MMO1.EHZ. 2023-04-02T01:40:51.73 0.3 undecidable manual S 355 23.6541 101 -0.32 70
IV.GUMA.HHZ. 2023-04-02T01:40:51.20 0.1 undecidable manual P 358 41.625 94 0.12 94
IV.CAMP.HHZ. 2023-04-02T01:40:50.38 0.1 undecidable manual S 164 17.4714 110 -0.08 99
IV.MF5.EHZ. 2023-04-02T01:40:50.29 0.1 undecidable manual P 15 34.4433 96 0.31 92
IV.GIGS.HHZ. 2023-04-02T01:40:49.38 0.1 undecidable manual P 145 31.6461 97 -0.16 95
IV.MMO1.EHZ. 2023-04-02T01:40:48.11 0.1 undecidable manual P 355 23.6541 101 -0.21 95
IV.RM33.EHZ. 2023-04-02T01:40:48.29 0.1 undecidable manual P 210 22.755 102 0.1 98
IV.NRCA.HHZ. 2023-04-02T01:40:48.38 0.1 undecidable manual P 310 25.2525 100 -0.19 95
IV.TERO.HHZ. 2023-04-02T01:40:48.02 0.1 undecidable manual P 109 21.7671 103 -0.02 100
IV.LNSS.HHZ. 2023-04-02T01:40:48.86 0.1 undecidable manual P 250 27.0507 99 0.01 99
IV.SMA1.EHZ. 2023-04-02T01:40:47.97 0.6 undecidable manual S 192 6.4935 147 -0.17 49
IV.CAMP.HHZ. 2023-04-02T01:40:47.45 0.1 undecidable manual P 164 17.4714 110 0.05 100
IV.SMA1.EHZ. 2023-04-02T01:40:46.27 0.1 positive manual P 192 6.4935 147 0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.5 0.0003675 0.32 AML other m 2023-04-02T01:40:48.35
IV.SMA1.EHE. ML:1.4 0.0003205 1.06 AML other m 2023-04-02T01:40:49.57
IV.CAMP.HHE. ML:0.9 0.0000669 0.78 AML other m 2023-04-02T01:40:50.58
IV.TERO.HHN. ML:0.9 0.00005725 0.08 AML other m 2023-04-02T01:40:51.70
IV.CAMP.HHN. ML:0.9 0.00005745 0.28 AML other m 2023-04-02T01:40:51.75
IV.MMO1.EHE. ML:1.0 0.000058450000000000005 1.58 AML other m 2023-04-02T01:40:52.10
IV.RM33.EHN. ML:1.2 0.00009669999999999999 0.18 AML other m 2023-04-02T01:40:52.21
IV.RM33.EHE. ML:1.5 0.00017299999999999998 0.14 AML other m 2023-04-02T01:40:52.47
IV.MMO1.EHN. ML:1.2 0.0000906 0.24 AML other m 2023-04-02T01:40:52.75
IV.NRCA.HHE. ML:1.8 0.00033099999999999997 0.74 AML other m 2023-04-02T01:40:52.40
IV.NRCA.HHN. ML:1.6 0.000214 0.1 AML other m 2023-04-02T01:40:53.17
IV.LNSS.HHN. ML:1.1 0.0000617 0.54 AML other m 2023-04-02T01:40:53.51
IV.LNSS.HHE. ML:1.1 0.0000603 1.2 AML other m 2023-04-02T01:40:54.21
IV.FDMO.HHE. ML:1.0 0.00003165 0.24 AML other m 2023-04-02T01:40:57.87
IV.GUMA.HHN. ML:1.4 0.00008245 0.78 AML other m 2023-04-02T01:40:58.41
IV.TERO.HHE. ML:1.8 0.000427 0.64 AML other m 2023-04-02T01:40:58.36
IV.FDMO.HHN. ML:1.0 0.000029350000000000002 0.7 AML other m 2023-04-02T01:40:58.49
IV.CESI.HHN. ML:1.2 0.000039750000000000004 0.88 AML other m 2023-04-02T01:41:00.46
IV.CESI.HHE. ML:1.2 0.00004565 0.42 AML other m 2023-04-02T01:41:00.68
IV.GUMA.HHE. ML:1.4 0.00008434999999999999 0.7 AML other m 2023-04-02T01:41:05.07
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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