Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 08-10-2023 and time 22:58:58 (UTC) in region 1 km SE Amatrice (RI)

A magnitude ML 1.1 earthquake occured in region: 1 km SE Amatrice (RI), on

  • 08-10-2023 22:58:58 (UTC)
  • 09-10-2023 00:58:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6190, 13.2940 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 1 2657 2657
Campotosto AQ 9 542 3199
Accumoli RI 9 667 3866
Cittareale RI 11 482 4348
Capitignano AQ 11 665 5013
Montereale AQ 11 2581 7594
Crognaleto TE 17 1297 8891
Arquata del Tronto AP 17 1178 10069
Cortino TE 18 656 10725
Borbona RI 18 617 11342
Cagnano Amiterno AQ 19 1369 12711
Barete AQ 19 737 13448
Posta RI 19 694 14142
Acquasanta Terme AP 19 2916 17058

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)
53 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)
78 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)
100 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
Reviewed
Rev100 		ML 1.1 2023-10-08
22:58:58		 42.6187 13.2943 13 2023-10-08
23:08:27		 Sala Sismica INGV-Roma 121906351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-08 22:58:58 ± 0.06
Latitude 42.6187 ± 0.0027
Longitude 13.2943 ± 0.0049
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121906351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 329
Semi-minor axis of confidence ellipse (meter) 281
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) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30307
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 121906351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-08 23:08:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.GRAM.HHZ. 2023-10-08T23:00:34.79 3.0 undecidable manual Sg 22.65 0
IV.PIPA.HNZ. 2023-10-08T23:00:21.64 3.0 undecidable manual Sn -0.84 0
7C.SPAOL.HNZ. 2023-10-08T23:00:02.49 3.0 positive manual Pg 20.08 0
IV.ACATE.EHZ. 2023-10-08T23:00:00.35 3.0 negative manual Pn 13.55 0
CR.STON.BHZ. 2023-10-08T22:59:45.20 3.0 undecidable manual Pg 11.44 0
IV.MTMR.EHZ. 2023-10-08T22:59:44.33 3.0 undecidable manual Sg 0.44 0
IV.VENL.EHZ. 2023-10-08T22:59:40.83 3.0 positive manual Pg 9.29 0
IV.ARRO.EHZ. 2023-10-08T22:59:29.41 3.0 undecidable manual P 0
IV.SALB.HHZ. 2023-10-08T22:59:28.22 3.0 positive manual Pn 1 0
IV.RCAV.EHZ. 2023-10-08T22:59:27.82 3.0 undecidable manual Sg 2.18 0
IV.GUMA.HHZ. 2023-10-08T22:59:12.42 3.0 positive manual Pg 4.95 0
IV.GAVE.EHZ. 2023-10-08T22:59:10.24 0.6 undecidable manual S 284 33.6441 94 0.05 48
IV.MMO1.EHZ. 2023-10-08T22:59:09.68 0.3 undecidable manual S 5 31.2465 94 0.13 72
IV.NRCA.HHZ. 2023-10-08T22:59:08.65 0.3 undecidable manual S 328 27.9498 95 -0.04 72
7F.SIB3.EHE. 2023-10-08T22:59:08.55 0.6 undecidable manual S 356 28.5492 95 -0.28 45
IV.LNSS.HHZ. 2023-10-08T22:59:06.84 0.6 undecidable manual S 265 20.868 100 0.05 49
IV.GAVE.EHZ. 2023-10-08T22:59:05.32 0.1 undecidable manual P 284 33.6441 94 -0.03 96
IV.RM33.EHZ. 2023-10-08T22:59:04.94 0.3 undecidable manual S 208 13.7751 115 -0.06 75
IV.MMO1.EHZ. 2023-10-08T22:59:04.95 0.1 undecidable manual P 5 31.2465 94 -0.03 96
7F.SIB3.EHE. 2023-10-08T22:59:04.37 0.3 undecidable manual P 356 28.5492 95 -0.2 70
IV.GIGS.HHZ. 2023-10-08T22:59:04.31 3.0 negative manual Pg -0.1 0
IV.CAMP.HHZ. 2023-10-08T22:59:04.49 0.3 undecidable manual S 134 13.0758 117 -0.34 71
IV.NRCA.HHZ. 2023-10-08T22:59:04.35 0.3 undecidable manual P 328 27.9498 95 -0.13 71
IV.MCI.EHZ. 2023-10-08T22:59:03.73 3.0 negative manual P -0.12 0
IV.MTRA.HNE. 2023-10-08T22:59:03.24 0.3 undecidable manual P 29 17.4714 105 0.36 69
IV.SMA1.EHZ. 2023-10-08T22:59:03.17 0.3 undecidable manual S 69 3.5964 160 0.04 75
IV.TERO.HHZ. 2023-10-08T22:59:03.75 3.0 positive manual Pg -1.57 0
IV.LNSS.HHZ. 2023-10-08T22:59:03.43 0.1 undecidable manual P 265 20.868 100 0.04 98
IV.CAMP.HHZ. 2023-10-08T22:59:02.22 0.1 undecidable manual P 134 13.0758 117 -0.04 100
IV.RM33.EHZ. 2023-10-08T22:59:02.46 0.1 undecidable manual P 208 13.7751 115 0.11 97
IV.SMA1.EHZ. 2023-10-08T22:59:01.44 0.1 undecidable manual P 69 3.5964 160 0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.1 0.00016719075 0.1664 AML other m 2023-10-08T22:59:03.35
IV.SMA1.EHN. ML:0.9 0.00012063917 0.0896 AML other m 2023-10-08T22:59:03.35
IV.CAMP.HHN. ML:0.8 0.0000634 0.22 AML other m 2023-10-08T22:59:04.74
IV.CAMP.HHE. ML:0.7 0.00004315 0.28 AML other m 2023-10-08T22:59:04.65
IV.RM33.EHE. ML:1.1 0.00011949999999999999 0.3 AML other m 2023-10-08T22:59:05.25
IV.RM33.EHN. ML:1.2 0.000143 0.1 AML other m 2023-10-08T22:59:05.24
IV.MCI.EHE. ML:2.4 0.00017449999999999999 0.6 AML other m 2023-10-08T22:59:05.83
IV.MCI.EHN. ML:2.3 0.0001265 0.24 AML other m 2023-10-08T22:59:05.75
IV.LNSS.HHE. ML:0.9 0.000055 1.64 AML other m 2023-10-08T22:59:06.95
IV.LNSS.HHN. ML:0.8 0.0000446 0.76 AML other m 2023-10-08T22:59:07.40
IV.TERO.HHN. ML:0.7 0.00003115 0.44 AML other m 2023-10-08T22:59:08.10
IV.TERO.HHE. ML:1.0 0.00004825 0.34 AML other m 2023-10-08T22:59:08.54
IV.NRCA.HHN. ML:1.1 0.00006115 0.16 AML other m 2023-10-08T22:59:08.84
IV.NRCA.HHE. ML:1.3 0.00010645 1.04 AML other m 2023-10-08T22:59:09.78
IV.RM33.HNN. ML:1.2 0.0001665144 0.5376 AML other m 2023-10-08T22:59:06.32
IV.RM33.HNE. ML:1.2 0.000154267345 0.5376 AML other m 2023-10-08T22:59:06.48
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