Earthquake with magnitude of ML 0.9 on date 13-03-2023 and time 23:16:27 (UTC) in region 2 km SE Amatrice (RI)

A magnitude ML 0.9 earthquake occured in region: 2 km SE Amatrice (RI), on

  • 13-03-2023 23:16:27 (UTC)
  • 14-03-2023 00:16:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6170, 13.2970 at 12 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 2 2657 2657
Campotosto AQ 9 542 3199
Accumoli RI 10 667 3866
Capitignano AQ 11 665 4531
Montereale AQ 11 2581 7112
Cittareale RI 11 482 7594
Crognaleto TE 17 1297 8891
Arquata del Tronto AP 17 1178 10069
Cortino TE 17 656 10725
Borbona RI 18 617 11342
Cagnano Amiterno AQ 18 1369 12711
Barete AQ 18 737 13448
Posta RI 19 694 14142
Acquasanta Terme AP 19 2916 17058
Pizzoli AQ 20 4326 21384

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km N of L'Aquila (69753 inhabitants)
34 Km W of Teramo (54892 inhabitants)
54 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
77 Km W of Pescara (121014 inhabitants)
77 Km W of Chieti (51815 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
83 Km NE of Tivoli (56533 inhabitants)
92 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
Bulletin
Rev1000
ML 0.9 2023-03-13
23:16:27
42.6167 13.2967 12 2024-03-01
17:18:04
Bollettino Sismico Italiano INGV 116464761
Reviewed
Rev100
ML 0.8 2023-03-13
23:16:27
42.6183 13.2977 12 2023-03-13
23:25:12
Sala Sismica INGV-Roma 115337991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-13 23:16:27 ± 0.08
Latitude 42.6167 ± 0.0054
Longitude 13.2967 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116464761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 457
Semi-minor axis of confidence ellipse (meter) 393
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 41
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.03148
Epicentral distance of station farthest from the epicenter (degree) 0.38941
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 115337991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-13 23:25:12

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 116464761
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-17 16:33:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2023-03-13T23:16:37.44 0.1 undecidable manual S 328 28.2495 93 -0.36 90
IV.GIGS.HHZ. 2023-03-13T23:16:37.79 0.3 undecidable manual S 129 28.9488 93 -0.19 71
IV.MF5.EHZ. 2023-03-13T23:16:36.58 0.3 undecidable manual P 18 43.2234 91 0.7 59
IV.TERO.HHZ. 2023-03-13T23:16:36.71 0.1 undecidable manual S 88 25.0527 94 -0.24 94
IV.LNSS.HHZ. 2023-03-13T23:16:35.76 0.3 undecidable manual S 266 20.9679 96 -0.1 72
IV.MMO1.EHZ. 2023-03-13T23:16:34.07 0.3 undecidable manual P 4 31.4463 92 0.01 73
7F.SIB1.EHE. 2023-03-13T23:16:34.08 0.3 undecidable manual P 356 30.9468 93 0.1 72
IV.NRCA.HHZ. 2023-03-13T23:16:33.54 0.1 undecidable manual P 328 28.2495 93 -0.03 97
IV.RM33.EHZ. 2023-03-13T23:16:33.99 0.1 undecidable manual S 209 13.6752 110 0.04 100
IV.GIGS.HHZ. 2023-03-13T23:16:33.70 0.3 undecidable manual P 129 28.9488 93 0.03 73
7F.SIB2.EHE. 2023-03-13T23:16:33.84 0.3 undecidable manual P 1 30.4473 93 -0.06 72
IV.TERO.HHZ. 2023-03-13T23:16:33.12 0.3 undecidable manual P 88 25.0527 94 0.04 73
IV.CAMP.HHZ. 2023-03-13T23:16:33.51 0.3 undecidable manual S 134 12.876 113 -0.23 72
IV.LNSS.HHZ. 2023-03-13T23:16:32.45 0.1 undecidable manual P 266 20.9679 96 0.01 99
IV.CAMP.HHZ. 2023-03-13T23:16:31.42 0.1 undecidable manual P 134 12.876 113 0.2 96
IV.RM33.EHZ. 2023-03-13T23:16:31.53 0.1 undecidable manual P 209 13.6752 110 0.18 97
IV.SMA1.EHZ. 2023-03-13T23:16:31.86 0.1 undecidable manual S 64 3.4965 159 -0.16 99
IV.SMA1.EHZ. 2023-03-13T23:16:30.45 0.1 undecidable manual P 64 3.4965 159 0.22 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1.2 0.00013350000000000002 0.3 AML other m 2023-03-13T23:16:34.25
IV.RM33.EHE. ML:1.0 0.00009989999999999999 0.22 AML other m 2023-03-13T23:16:34.53
IV.TERO.HHE. ML:0.8 0.00003455 0.16 AML other m 2023-03-13T23:16:36.91
IV.TERO.HHN. ML:0.9 0.00004290402 0.0512 AML other m 2023-03-13T23:16:37.09
IV.NRCA.HHE. ML:1.0 0.0000435 0.18 AML other m 2023-03-13T23:16:37.80
IV.NRCA.HHN. ML:0.6 0.000020391295 0.064 AML other m 2023-03-13T23:16:37.94
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