Earthquake with magnitude of ML 1.2 on date 04-04-2023 and time 17:38:01 (Italy) in region 3 km NE Amatrice (RI)

A magnitude ML 1.2 earthquake occured in region: 3 km NE Amatrice (RI), on

  • 04-04-2023 15:38:01 (UTC)
  • 04-04-2023 17:38:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6520, 13.3060 at 12 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 3 2657 2657
Accumoli RI 7 667 3324
Campotosto AQ 12 542 3866
Cittareale RI 13 482 4348
Arquata del Tronto AP 14 1178 5526
Capitignano AQ 15 665 6191
Montereale AQ 15 2581 8772
Acquasanta Terme AP 16 2916 11688
Cortino TE 17 656 12344
Valle Castellana TE 18 977 13321
Crognaleto TE 18 1297 14618
Rocca Santa Maria TE 19 537 15155

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km W of Teramo (54892 inhabitants)
34 Km N of L'Aquila (69753 inhabitants)
55 Km E of Terni (111501 inhabitants)
60 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
77 Km W of Pescara (121014 inhabitants)
78 Km W of Chieti (51815 inhabitants)
87 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
90 Km SE of Perugia (166134 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
Reviewed
Rev100
ML 1.2 2023-04-04
15:38:01
42.6517 13.3062 12 2023-04-04
15:50:21
Sala Sismica INGV-Roma 116066511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-04 15:38:01 ± 0.06
Latitude 42.6517 ± 0.0027
Longitude 13.3062 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 116066511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 329
Semi-minor axis of confidence ellipse (meter) 189
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 17
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.27879
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 116066511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-04 15:50:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ACATE.EHZ. 2023-04-04T15:39:43.62 3.0 undecidable manual Pg 21.16 0
IV.SPS2.HHZ. 2023-04-04T15:39:17.58 3.0 undecidable manual Pg 17.23 0
IV.TREG.HNZ. 2023-04-04T15:39:13.68 3.0 undecidable manual Sn 4.61 0
IV.MRGE.HHZ. 2023-04-04T15:39:12.36 3.0 undecidable manual Pn 5.13 0
IV.EPZF.HHZ. 2023-04-04T15:39:08.76 3.0 undecidable manual Pn -3.82 0
GU.BURY.HHZ. 2023-04-04T15:39:07.75 3.0 positive manual Pg 14.34 0
IV.PII.HHZ. 2023-04-04T15:38:29.50 3.0 positive manual Pg 5.1 0
IV.PAOL.HHZ. 2023-04-04T15:38:28.19 3.0 undecidable manual Pn -2.09 0
IV.FNVD.HHZ. 2023-04-04T15:38:28.01 3.0 positive manual Pg 5.95 0
IV.MCIV.CHZ. 2023-04-04T15:38:26.24 3.0 undecidable manual Sg 0.18 0
IV.GIGS.HHZ. 2023-04-04T15:38:11.84 0.3 undecidable manual S 135 30.9468 92 -0.28 71
IV.NRCA.HHZ. 2023-04-04T15:38:10.51 0.1 undecidable manual S 322 25.5522 93 -0.15 97
IV.TERO.HHZ. 2023-04-04T15:38:10.20 0.1 undecidable manual S 97 24.5532 93 -0.2 97
IV.MURB.HNZ. 2023-04-04T15:38:10.74 3.0 undecidable manual S -0.1 0
IV.LNSS.HHZ. 2023-04-04T15:38:09.74 0.3 undecidable manual S 256 22.3554 94 -0.08 74
IV.RM33.EHZ. 2023-04-04T15:38:08.40 0.3 undecidable manual S 205 17.4714 97 -0.13 75
IV.MTRA.EHZ. 2023-04-04T15:38:07.45 0.3 undecidable manual S 32 13.7751 107 -0.11 75
IV.CAMP.HHZ. 2023-04-04T15:38:07.84 0.3 undecidable manual S 147 15.3735 102 -0.12 75
IV.GIGS.HHZ. 2023-04-04T15:38:07.80 0.1 undecidable manual P 135 30.9468 92 0.22 95
IV.NRCA.HHZ. 2023-04-04T15:38:06.79 0.1 undecidable manual P 322 25.5522 93 0.04 100
IV.TERO.HHZ. 2023-04-04T15:38:06.63 0.1 undecidable manual P 97 24.5532 93 0.04 100
IV.LNSS.HHZ. 2023-04-04T15:38:06.30 0.3 undecidable manual P 256 22.3554 94 0.04 75
IV.MMO1.EHZ. 2023-04-04T15:38:06.69 3.0 undecidable manual S -1.2 0
IV.CAMP.HHZ. 2023-04-04T15:38:05.31 0.1 undecidable manual P 147 15.3735 102 0.12 100
IV.RM33.EHZ. 2023-04-04T15:38:05.59 0.3 undecidable manual P 205 17.4714 97 0.08 75
IV.SMA1.EHZ. 2023-04-04T15:38:05.48 0.3 undecidable manual S 134 3.2967 159 -0.06 77
IV.MTRA.EHZ. 2023-04-04T15:38:05.14 0.1 undecidable manual P 32 13.7751 107 0.19 99
IV.FRON.EHZ. 2023-04-04T15:38:04.84 3.0 undecidable manual P 0.12 0
IV.SMA1.EHZ. 2023-04-04T15:38:04.05 0.3 undecidable manual P 134 3.2967 159 0.26 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.5 0.00044500000000000003 0.42 AML other m 2023-04-04T15:38:05.87
IV.SMA1.EHN. ML:1.3 0.0003125 0.46 AML other m 2023-04-04T15:38:06.36
IV.CAMP.HHN. ML:1.0 0.00007939999999999999 1.32 AML other m 2023-04-04T15:38:08.32
IV.CAMP.HHE. ML:1.0 0.00008450000000000001 0.8 AML other m 2023-04-04T15:38:08.89
IV.LNSS.HHE. ML:1.2 0.0000913 0.18 AML other m 2023-04-04T15:38:09.99
IV.LNSS.HHN. ML:1.1 0.000080660965 0.2176 AML other m 2023-04-04T15:38:09.88
IV.NRCA.HHN. ML:1.4 0.00014199999999999998 0.84 AML other m 2023-04-04T15:38:10.55
IV.NRCA.HHE. ML:1.6 0.00021799999999999999 0.14 AML other m 2023-04-04T15:38:10.80
IV.MTRA.HNE. ML:1.3 0.00017626095 0.1152 AML other m 2023-04-04T15:38:07.82
IV.MTRA.HNN. ML:1.3 0.00018541669999999998 0.1536 AML other m 2023-04-04T15:38:07.53
IV.RM33.EHE. ML:1.0 0.000078566295 0.3072 AML other m 2023-04-04T15:38:08.62
IV.RM33.EHN. ML:1.0 0.000079183385 0.1664 AML other m 2023-04-04T15:38:08.59
IV.TERO.HNE. ML:1.4 0.0001391034 0.1408 AML other m 2023-04-04T15:38:10.28
IV.TERO.HNN. ML:1.4 0.00015416732049999997 0.3968 AML other m 2023-04-04T15:38:10.28
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