Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 17-08-2023 and time 12:36:21 (Italy) in region 5 km NW Preci (PG)

A magnitude ML 1.4 earthquake occured in region: 5 km NW Preci (PG), on

  • 17-08-2023 10:36:21 (UTC)
  • 17-08-2023 12:36:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9120, 13.0030 at 11 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
Preci PG 5 724 724
Sellano PG 7 1079 1803
Visso MC 7 1107 2910
Monte Cavallo MC 9 145 3055
Ussita MC 12 444 3499
Cerreto di Spoleto PG 12 1075 4574
Castelsantangelo sul Nera MC 12 281 4855
Norcia PG 15 4957 9812
Pieve Torina MC 15 1458 11270
Fiordimonte MC 16 202 11472
Pievebovigliana MC 18 866 12338
Serravalle di Chienti MC 18 1070 13408
Fiastra MC 19 559 13967
Acquacanina MC 19 121 14088
Muccia MC 19 915 15003
Vallo di Nera PG 19 364 15367

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
54 Km E of Perugia (166134 inhabitants)
64 Km W of Teramo (54892 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
92 Km NE 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 1.4 2023-08-17
10:36:21		 42.9117 13.0028 11 2023-08-17
10:43:23		 Sala Sismica INGV-Roma 120215411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-17 10:36:21 ± 0.07
Latitude 42.9117 ± 0.0045
Longitude 13.0028 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 120215411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 507
Semi-minor axis of confidence ellipse (meter) 420
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 194
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 164
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
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) 0.38041
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 120215411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-08-17 10:43:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2023-08-17T10:36:35.50 0.6 undecidable manual S 316 42.2244 50 0.34 44
IV.ASSB.HHZ. 2023-08-17T10:36:32.10 0.6 undecidable manual S 298 31.4463 50 -0.18 47
IV.MURB.HHZ. 2023-08-17T10:36:31.63 3.0 undecidable manual Sn -4.05 0
IV.CSP1.EHZ. 2023-08-17T10:36:30.74 0.1 undecidable manual S 39 25.8519 50 -0.04 98
IV.MML1.EHZ. 2023-08-17T10:36:29.73 0.3 undecidable manual S 354 22.5552 50 -0.16 72
IV.ATCC.EHZ. 2023-08-17T10:36:29.28 0.1 undecidable manual P 316 42.2244 50 -0.03 95
IV.ASSB.HHZ. 2023-08-17T10:36:27.53 0.1 undecidable manual P 298 31.4463 50 -0.12 95
IV.MML1.EHZ. 2023-08-17T10:36:26.47 0.1 undecidable manual P 354 22.5552 50 0.2 95
IV.NRCA.HHZ. 2023-08-17T10:36:26.86 1.0 undecidable manual S 134 12.5763 130 -0.17 24
IV.CSP1.EHZ. 2023-08-17T10:36:26.79 0.1 undecidable manual P 39 25.8519 50 0.01 98
IT.MTCL.HGZ. 2023-08-17T10:36:26.06 0.3 undecidable manual S 358 9.0798 139 -0.14 74
IV.NRCA.HHZ. 2023-08-17T10:36:24.65 0.1 undecidable manual P 134 12.5763 130 0.03 100
IT.MTCL.HGZ. 2023-08-17T10:36:24.28 0.1 undecidable manual P 358 9.0798 139 0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.3 0.000193 0.1 AML other m 2023-08-17T10:36:26.89
IV.NRCA.HHE. ML:1.2 0.000151 0.88 AML other m 2023-08-17T10:36:27.47
IV.FDMO.HHN. ML:1.5 0.0002605 0.42 AML other m 2023-08-17T10:36:28.00
IV.FDMO.HHE. ML:1.7 0.00041900000000000005 1.66 AML other m 2023-08-17T10:36:28.98
IV.MML1.EHE. ML:1.5 0.00018449999999999999 0.14 AML other m 2023-08-17T10:36:30.25
IV.MML1.EHN. ML:1.2 0.0001145 0.1 AML other m 2023-08-17T10:36:30.25
IV.CSP1.EHE. ML:1.6 0.0002105 0.42 AML other m 2023-08-17T10:36:31.45
IV.CSP1.EHN. ML:1.6 0.000215 0.68 AML other m 2023-08-17T10:36:32.06
IV.ASSB.HHN. ML:0.9 0.000033350000000000004 0.72 AML other m 2023-08-17T10:36:32.03
IV.ASSB.HHE. ML:0.7 0.000024599999999999998 0.52 AML other m 2023-08-17T10:36:33.08
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