Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 18-03-2023 and time 22:14:19 (UTC) in region 5 km NE Amatrice (RI)

A magnitude ML 1.5 earthquake occured in region: 5 km NE Amatrice (RI), on

  • 18-03-2023 22:14:19 (UTC)
  • 18-03-2023 23:14:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6660, 13.3280 at 8 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
Amatrice RI 5 2657 2657
Accumoli RI 7 667 3324
Arquata del Tronto AP 12 1178 4502
Campotosto AQ 13 542 5044
Acquasanta Terme AP 13 2916 7960
Cittareale RI 15 482 8442
Cortino TE 16 656 9098
Valle Castellana TE 16 977 10075
Capitignano AQ 16 665 10740
Rocca Santa Maria TE 17 537 11277
Montereale AQ 17 2581 13858
Crognaleto TE 18 1297 15155
Montegallo AP 20 523 15678

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km W of Teramo (54892 inhabitants)
35 Km N of L'Aquila (69753 inhabitants)
57 Km E of Terni (111501 inhabitants)
60 Km SE of Foligno (57155 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
76 Km W of Pescara (121014 inhabitants)
77 Km W of Chieti (51815 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km NE of Tivoli (56533 inhabitants)
91 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 1.5 2023-03-18
22:14:19		 42.6665 13.3278 8 2024-03-01
17:18:13		 Bollettino Sismico Italiano INGV 119531091
Reviewed
Rev100 		ML 1.6 2023-03-18
22:14:19		 42.6628 13.3402 11 2023-03-18
22:20:07		 Sala Sismica INGV-Roma 115518791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-18 22:14:19 ± 0.05
Latitude 42.6665 ± 0.0018
Longitude 13.3278 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 119531091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 312
Semi-minor axis of confidence ellipse (meter) 149
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 100
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 38
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.68259
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 41
Type of magnitude ML
Reference to an origin 119531091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-07-24 08:51:33

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 115518791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-18 22:20:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MML1.EHZ. 2023-03-18T22:14:38.53 0.3 undecidable manual S 330 57.3981 50 0.16 67
IV.VCEL.EHZ. 2023-03-18T22:14:37.07 0.3 undecidable manual S 126 51.6039 50 0.24 67
IV.CSP1.EHZ. 2023-03-18T22:14:36.11 0.6 undecidable manual S 348 48.2184 50 0.19 45
IV.FDMO.HHZ. 2023-03-18T22:14:35.06 0.3 undecidable manual S 335 45.4212 50 -0.12 69
IV.MF5.EHZ. 2023-03-18T22:14:33.38 0.3 undecidable manual S 17 37.2294 50 0.4 66
IV.EL6.EHZ. 2023-03-18T22:14:33.15 0.6 undecidable manual P 346 75.7686 50 -0.25 43
IV.GAVE.EHZ. 2023-03-18T22:14:32.17 0.3 undecidable manual S 275 35.4423 50 -0.34 67
IV.MOMA.HHZ. 2023-03-18T22:14:31.53 0.3 undecidable manual P 284 63.5919 50 0.01 69
IV.MML1.EHZ. 2023-03-18T22:14:31.18 0.3 undecidable manual P 330 57.3981 50 0.61 60
IV.ASCOL.HNZ. 2023-03-18T22:14:30.11 0.3 undecidable manual S 46 29.5482 105 -0.43 67
IV.GUMA.HHZ. 2023-03-18T22:14:30.69 0.6 undecidable manual S 100
IV.GIGS.HHZ. 2023-03-18T22:14:30.34 0.6 undecidable manual S 140 30.9468 104 -0.67 41
IV.NRCA.HHZ. 2023-03-18T22:14:29.11 0.3 undecidable manual S 317 25.4523 107 -0.04 73
IV.MMO1.EHZ. 2023-03-18T22:14:29.14 0.1 undecidable manual S 360 25.8519 107 -0.15 95
IV.VCEL.EHZ. 2023-03-18T22:14:29.93 0.3 undecidable manual P 126 51.6039 50 0.25 67
7F.SIB1.EHZ. 2023-03-18T22:14:29.57 0.3 undecidable manual S 350 25.752 107 0.31 69
IV.ARRO.EHZ. 2023-03-18T22:14:28.61 0.3 undecidable manual P 258 46.9197 50 -0.34 66
IV.FDMO.HHZ. 2023-03-18T22:14:28.46 0.3 undecidable manual P 335 45.4212 50 -0.26 67
IV.CSP1.EHZ. 2023-03-18T22:14:28.98 0.3 undecidable manual P 348 48.2184 50 -0.18 68
7F.SIB3.EHN. 2023-03-18T22:14:28.44 0.3 undecidable manual S 349 23.6541 109 -0.12 72
IV.LNSS.HHZ. 2023-03-18T22:14:28.97 0.3 undecidable manual S 253 24.4533 108 0.12 72
7F.SIB2.EHN. 2023-03-18T22:14:28.93 0.3 undecidable manual S 356 24.9528 108 -0.08 72
IV.RM33.EHZ. 2023-03-18T22:14:27.36 0.1 undecidable manual S 208 19.7691 112 0.05 98
IV.MF5.EHZ. 2023-03-18T22:14:27.64 0.3 undecidable manual P 17 37.2294 50 0.19 69
IV.GIGS.HHZ. 2023-03-18T22:14:26.18 0.3 undecidable manual P 140 30.9468 104 -0.14 71
IV.GAVE.EHZ. 2023-03-18T22:14:26.83 0.1 undecidable manual P 275 35.4423 50 -0.36 90
IV.LNSS.HHZ. 2023-03-18T22:14:25.14 0.1 undecidable manual P 253 24.4533 108 0.07 97
7F.SIB1.EHZ. 2023-03-18T22:14:25.38 0.1 undecidable manual P 350 25.752 107 0.07 97
7F.SIB2.EHN. 2023-03-18T22:14:25.12 0.1 undecidable manual P 356 24.9528 108 -0.05 97
IV.NRCA.HHZ. 2023-03-18T22:14:25.29 0.1 undecidable manual P 317 25.4523 107 0.04 97
IV.ASCOL.HNZ. 2023-03-18T22:14:25.71 0.3 undecidable manual P 46 29.5482 105 -0.34 68
IV.MMO1.EHZ. 2023-03-18T22:14:25.32 0.1 undecidable manual P 360 25.8519 107 0 98
IV.RM33.EHZ. 2023-03-18T22:14:24.34 0.1 undecidable manual P 208 19.7691 112 0.17 96
7F.SIB3.EHN. 2023-03-18T22:14:24.87 0.1 undecidable manual P 349 23.6541 109 -0.04 98
IV.MTRA.EHZ. 2023-03-18T22:14:24.83 0.1 undecidable manual S 29 11.4774 125 0.07 99
IV.SMA1.EHE. 2023-03-18T22:14:22.08 0.1 negative manual P 171 3.996 153 0.38 94
IV.MTRA.EHZ. 2023-03-18T22:14:22.98 0.1 positive manual P 29 11.4774 125 0.27 95
IV.SMA1.EHE. 2023-03-18T22:14:22.93 0.1 undecidable manual S 171 3.996 153 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNN. ML:1.7 0.0006021737 0.0896 AML other m 2023-03-18T22:14:25.11
IV.MTRA.EHN. ML:1.7 0.0006335389499999999 0.064 AML other m 2023-03-18T22:14:25.11
IV.MTRA.HNE. ML:1.9 0.0011334224499999998 0.2176 AML other m 2023-03-18T22:14:25.14
IV.MTRA.EHE. ML:2.0 0.00117005765 0.2176 AML other m 2023-03-18T22:14:25.15
IV.RM33.HNN. ML:1.4 0.00021774725 0.3328 AML other m 2023-03-18T22:14:27.71
IV.RM33.EHN. ML:1.4 0.0001958217 0.32 AML other m 2023-03-18T22:14:27.70
IV.RM33.EHE. ML:1.5 0.000228 0.14 AML other m 2023-03-18T22:14:27.66
IV.RM33.HNE. ML:1.5 0.00023454705 0.32 AML other m 2023-03-18T22:14:27.75
IV.LNSS.HNE. ML:1.6 0.00022068889999999998 0.2304 AML other m 2023-03-18T22:14:29.24
IV.LNSS.HHE. ML:1.6 0.00023455914999999999 0.1664 AML other m 2023-03-18T22:14:29.24
IV.LNSS.HNN. ML:1.4 0.000173119145 0.1408 AML other m 2023-03-18T22:14:29.31
IV.LNSS.HHN. ML:1.6 0.000223557175 0.1536 AML other m 2023-03-18T22:14:29.31
IV.NRCA.HNE. ML:1.6 0.00022363814999999999 0.1152 AML other m 2023-03-18T22:14:29.54
IV.NRCA.HHE. ML:1.6 0.0002295 0.12 AML other m 2023-03-18T22:14:29.54
IV.GAVE.HNN. ML:1.7 0.0001951 0.9888 AML other m 2023-03-18T22:14:31.61
IV.NRCA.HHN. ML:1.4 0.00013374764999999998 0.1024 AML other m 2023-03-18T22:14:31.07
IV.GAVE.EHN. ML:1.5 0.00013700000000000002 0.14 AML other m 2023-03-18T22:14:32.80
IV.GAVE.HNE. ML:1.8 0.00023750015000000002 0.1408 AML other m 2023-03-18T22:14:32.90
IV.GAVE.EHE. ML:1.8 0.000225 0.14 AML other m 2023-03-18T22:14:32.90
IV.MF5.EHE. ML:1.3 0.00007696169999999999 0.32 AML other m 2023-03-18T22:14:33.80
IV.NRCA.HNN. ML:1.6 0.00022605150000000002 0.6432 AML other m 2023-03-18T22:14:33.86
IV.MF5.EHN. ML:1.6 0.0001715 1.56 AML other m 2023-03-18T22:14:34.83
IV.GUMA.HNE. ML:1.6 0.0001337494 1.3248 AML other m 2023-03-18T22:14:35.81
IV.GUMA.HHE. ML:1.4 0.00008663231 0.2816 AML other m 2023-03-18T22:14:36.25
IV.ARRO.EHN. ML:1.1 0.00003535 0.14 AML other m 2023-03-18T22:14:36.77
IV.FDMO.HHN. ML:0.8 0.000021140144999999997 0.1536 AML other m 2023-03-18T22:14:37.37
IV.ARRO.EHE. ML:1.0 0.000030550000000000004 0.24 AML other m 2023-03-18T22:14:37.74
IV.VCEL.EHN. ML:1.2 0.00003954669 0.4096 AML other m 2023-03-18T22:14:38.18
IV.FDMO.HHE. ML:0.7 0.000017169919999999998 0.2048 AML other m 2023-03-18T22:14:38.43
IV.CSP1.EHN. ML:1.3 0.000050846950500000004 0.1536 AML other m 2023-03-18T22:14:39.48
IV.MOMA.HHN. ML:0.4 0.000006941768500000001 0.256 AML other m 2023-03-18T22:14:39.36
IV.GUMA.HHN. ML:1.4 0.0000821 0.56 AML other m 2023-03-18T22:14:39.41
IV.MOMA.HNE. ML:1.8 0.00013573655000000001 0.8096 AML other m 2023-03-18T22:14:39.29
IV.MML1.EHE. ML:0.8 0.000012745557999999999 0.1792 AML other m 2023-03-18T22:14:40.02
IV.MML1.EHN. ML:1.0 0.000020494875 0.2304 AML other m 2023-03-18T22:14:40.08
IV.VCEL.EHE. ML:1.2 0.000047148184999999996 0.2944 AML other m 2023-03-18T22:14:40.97
IV.MOMA.HHE. ML:1.3 0.00004080193 0.1408 AML other m 2023-03-18T22:14:42.27
IV.CSP1.EHE. ML:1.2 0.000044472395 0.2816 AML other m 2023-03-18T22:14:43.15
IV.GUMA.HNN. ML:1.7 0.00016381079999999997 0.5504 AML other m 2023-03-18T22:14:44.27
IV.EL6.EHE. ML:1.1 0.000020546354999999997 0.1408 AML other m 2023-03-18T22:14:47.03
IV.MOMA.HNN. ML:1.9 0.0001586571 0.704 AML other m 2023-03-18T22:14:57.20
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