Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 18-09-2023 and time 03:43:07 (Italy) in region 3 km NW Torricella Sicura (TE)

A magnitude ML 1.5 earthquake occured in region: 3 km NW Torricella Sicura (TE), on

  • 18-09-2023 01:43:07 (UTC)
  • 18-09-2023 03:43:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6810, 13.6400 at 19 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.

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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
Torricella Sicura TE 3 2641 2641
Teramo TE 6 54892 57533
Campli TE 7 7209 64742
Rocca Santa Maria TE 9 537 65279
Civitella del Tronto TE 10 5116 70395
Montorio al Vomano TE 11 8218 78613
Basciano TE 12 2434 81047
Cortino TE 13 656 81703
Valle Castellana TE 13 977 82680
Canzano TE 14 1934 84614
Penna Sant'Andrea TE 14 1698 86312
Castellalto TE 15 7513 93825
Tossicia TE 15 1406 95231
Bellante TE 15 7152 102383
Folignano AP 16 9241 111624
Colledara TE 16 2179 113803
Cermignano TE 16 1649 115452
Castel Castagna TE 17 500 115952
Fano Adriano TE 17 296 116248
Maltignano AP 17 2401 118649
Sant'Egidio alla Vibrata TE 17 9811 128460
Sant'Omero TE 18 5243 133703
Pietracamela TE 19 271 133974
Ancarano TE 19 1857 135831
Torano Nuovo TE 20 1611 137442
Crognaleto TE 20 1297 138739
Isola del Gran Sasso d'Italia TE 20 4773 143512
Ascoli Piceno AP 20 49407 192919

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km W of Teramo (54892 inhabitants)
42 Km NE of L'Aquila (69753 inhabitants)
46 Km W of Montesilvano (53738 inhabitants)
53 Km W of Pescara (121014 inhabitants)
57 Km NW of Chieti (51815 inhabitants)
82 Km E of Terni (111501 inhabitants)
82 Km E of Foligno (57155 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 1.5 2023-09-18
01:43:07		 42.6807 13.6403 19 2023-09-18
01:50:50		 Sala Sismica INGV-Roma 121145681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-18 01:43:07 ± 0.13
Latitude 42.6807 ± 0.0045
Longitude 13.6403 ± 0.0122
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121145681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 904
Semi-minor axis of confidence ellipse (meter) 423
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
Circular confidence region, given by single value of horizontal uncertainty (meter) 900.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.06385
Epicentral distance of station farthest from the epicenter (degree) 0.53959
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 17
Type of magnitude ML
Reference to an origin 121145681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-18 01:50:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2023-09-18T01:43:25.92 0.3 undecidable manual S 322 57.6978 100 0.57 61
IV.NRCA.HHZ. 2023-09-18T01:43:22.41 0.3 undecidable manual S 292 46.1205 104 0.1 70
IV.MF5.EHZ. 2023-09-18T01:43:20.77 0.1 undecidable manual S 337 37.1295 108 0.76 78
IV.FDMO.HHZ. 2023-09-18T01:43:17.76 0.1 undecidable manual P 311 59.8956 100 -0.28 88
IV.CSP1.EHZ. 2023-09-18T01:43:17.55 0.1 undecidable manual P 322 57.6978 100 -0.17 91
IV.GIGS.HHZ. 2023-09-18T01:43:17.22 0.1 undecidable manual S 192 25.8519 118 0 98
IV.T0110.HHZ. 2023-09-18T01:43:17.41 0.1 undecidable manual P 167 51.3153 102 0.67 80
IV.FAGN.HHZ. 2023-09-18T01:43:16.06 0.1 undecidable manual P 186 46.2204 104 0.08 94
IV.CAMP.HHZ. 2023-09-18T01:43:16.96 0.3 undecidable manual S 230 24.753 119 -0.02 74
IV.SMA1.EHZ. 2023-09-18T01:43:16.93 0.1 undecidable manual S 258 25.5522 118 -0.22 95
IV.GUMA.HHZ. 2023-09-18T01:43:16.58 0.1 undecidable manual P 330 49.1175 103 0.17 91
IV.MTRA.HNZ. 2023-09-18T01:43:15.86 0.3 undecidable manual S 293 21.5673 124 -0.39 69
IV.ASCOL.HNZ. 2023-09-18T01:43:15.29 0.3 undecidable manual S 348 19.3695 127 -0.48 68
IV.NRCA.HHZ. 2023-09-18T01:43:15.79 0.1 undecidable manual P 292 46.1205 104 -0.17 92
IV.MF5.EHZ. 2023-09-18T01:43:14.77 0.1 undecidable manual P 337 37.1295 108 0.14 94
IV.OFFI.HHZ. 2023-09-18T01:43:13.14 0.1 undecidable manual P 7 28.4493 115 -0.25 94
IV.TERO.HHZ. 2023-09-18T01:43:13.67 0.3 undecidable manual S 205 7.0929 157 -0.04 75
IV.GIGS.HHZ. 2023-09-18T01:43:13.01 0.1 undecidable manual P 192 25.8519 118 -0.01 98
IV.SMA1.EHZ. 2023-09-18T01:43:12.93 0.1 undecidable manual P 258 25.5522 118 -0.05 98
IV.MTRA.HNZ. 2023-09-18T01:43:12.27 0.3 undecidable manual P 293 21.5673 124 -0.19 72
IV.CAMP.HHZ. 2023-09-18T01:43:12.89 0.1 undecidable manual P 230 24.753 119 0.01 99
IV.TERO.HHZ. 2023-09-18T01:43:11.12 0.1 undecidable manual P 205 7.0929 157 0.13 100
IV.ASCOL.HNZ. 2023-09-18T01:43:11.95 0.1 undecidable manual P 348 19.3695 127 -0.23 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.5 0.00015984945 0.2 AML other m 2023-09-18T01:43:17.17
IV.SMA1.EHE. ML:1.5 0.0001565 0.22 AML other m 2023-09-18T01:43:17.74
IV.MF5.EHE. ML:1.6 0.00013027069999999998 0.42 AML other m 2023-09-18T01:43:21.08
IV.MF5.EHN. ML:1.4 0.000081 1.54 AML other m 2023-09-18T01:43:21.14
IV.NRCA.HHN. ML:1.7 0.000127 0.34 AML other m 2023-09-18T01:43:22.79
IV.NRCA.HHE. ML:1.6 0.00009758046 0.1 AML other m 2023-09-18T01:43:22.95
IV.FDMO.HHE. ML:1.2 0.000028749999999999997 0.56 AML other m 2023-09-18T01:43:26.59
IV.CSP1.EHN. ML:1.8 0.000123 0.3 AML other m 2023-09-18T01:43:26.82
IV.CSP1.EHE. ML:1.8 0.00014250000000000002 0.26 AML other m 2023-09-18T01:43:26.67
IV.FDMO.HHN. ML:1.2 0.000035623509999999996 0.22 AML other m 2023-09-18T01:43:26.78
IV.GUMA.HHN. ML:1.5 0.000080782205 0.44 AML other m 2023-09-18T01:43:26.93
IV.T0110.HHE. ML:1.3 0.00004637495 0.46 AML other m 2023-09-18T01:43:31.62
IV.FAGN.HHN. ML:1.3 0.00005158078 0.22 AML other m 2023-09-18T01:43:24.78
IV.GUMA.HHE. ML:1.4 0.0000593 0.4 AML other m 2023-09-18T01:43:30.31
IV.GUMA.HNE. ML:1.7 0.0001358925 0.54 AML other m 2023-09-18T01:43:30.04
IV.T0110.HHN. ML:1.3 0.000048849999999999995 0.42 AML other m 2023-09-18T01:43:31.38
IV.FAGN.HHE. ML:1.5 0.00008345 0.36 AML other m 2023-09-18T01:43:32.07
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