Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 04-07-2023 and time 15:45:22 (UTC) in region 4 km SE Preci (PG)

A magnitude ML 1.3 earthquake occured in region: 4 km SE Preci (PG), on

  • 04-07-2023 15:45:22 (UTC)
  • 04-07-2023 17:45:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8470, 13.0620 at 10 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 4 724 724
Norcia PG 7 4957 5681
Castelsantangelo sul Nera MC 9 281 5962
Visso MC 10 1107 7069
Sellano PG 12 1079 8148
Cerreto di Spoleto PG 12 1075 9223
Ussita MC 13 444 9667
Cascia PG 15 3217 12884
Monte Cavallo MC 17 145 13029
Poggiodomo PG 18 117 13146
Vallo di Nera PG 18 364 13510

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
57 Km W of Teramo (54892 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
62 Km E of Perugia (166134 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
96 Km W of Montesilvano (53738 inhabitants)
98 Km N of Guidonia Montecelio (88673 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 1.3 2023-07-04
15:45:22		 42.8472 13.0623 10 2023-07-04
15:58:45		 Sala Sismica INGV-Roma 118967301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-07-04 15:45:22 ± 0.06
Latitude 42.8472 ± 0.0036
Longitude 13.0623 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 118967301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 349
Semi-minor axis of confidence ellipse (meter) 240
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 64
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 26
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) 0.45686
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 118967301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-07-04 15:58:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHZ. 2023-07-04T15:45:45.88 3.0 undecidable manual P -1.45 0
IV.LRP.EHZ. 2023-07-04T15:45:44.80 3.0 negative manual P 0.49 0
IV.RM33.EHZ. 2023-07-04T15:45:35.69 1.0 undecidable manual S 162 39.5271 50 0.06 24
IV.MF5.EHZ. 2023-07-04T15:45:35.36 0.3 undecidable manual S 64 35.8419 50 0.71 61
IV.CSP1.EHZ. 2023-07-04T15:45:32.58 0.6 undecidable manual S 23 29.5482 50 -0.38 46
IV.TERO.HHZ. 2023-07-04T15:45:31.20 0.6 positive manual P 119 50.7159 50 -0.5 43
IV.GAVE.EHZ. 2023-07-04T15:45:30.37 0.1 undecidable manual S 219 21.9669 113 -0.2 96
IV.MOMA.HHZ. 2023-07-04T15:45:30.23 0.6 negative manual P 263 40.3263 50 0.12 47
IV.FDMO.HHZ. 2023-07-04T15:45:30.06 0.6 undecidable manual S 6 21.0678 114 -0.23 48
IV.MMO1.EHZ. 2023-07-04T15:45:30.38 0.6 undecidable manual S 75 22.2555 113 -0.28 47
IV.CESI.HHZ. 2023-07-04T15:45:30.36 0.3 undecidable manual S 324 21.6672 114 -0.12 73
IV.ASSB.HHZ. 2023-07-04T15:45:29.67 0.6 undecidable manual P 304 39.3273 50 -0.28 46
IV.RM33.EHZ. 2023-07-04T15:45:29.99 0.1 undecidable manual P 162 39.5271 50 0.01 97
IV.MF5.EHZ. 2023-07-04T15:45:29.57 0.1 undecidable manual P 64 35.8419 50 0.15 95
IT.MTCL.HGZ. 2023-07-04T15:45:28.93 0.3 undecidable manual S 343 17.0718 119 -0.11 74
IV.FEMA.HNZ. 2023-07-04T15:45:28.01 0.6 undecidable manual S 355 12.7761 126 0.22 49
7F.SIB3.EHZ. 2023-07-04T15:45:28.81 0.3 undecidable manual S 80 17.1717 119 -0.26 72
IV.CSP1.EHZ. 2023-07-04T15:45:28.11 1.0 positive manual P 23 29.5482 50 -0.33 23
IV.CESI.HHZ. 2023-07-04T15:45:27.08 0.3 negative manual P 324 21.6672 114 0.07 74
IV.GAVE.EHZ. 2023-07-04T15:45:27.14 0.1 undecidable manual P 219 21.9669 113 0.08 98
IV.NRCA.HHZ. 2023-07-04T15:45:26.23 0.6 undecidable manual S 110 4.4955 155 0.33 48
IT.MTCL.HGZ. 2023-07-04T15:45:26.27 0.1 undecidable manual P 343 17.0718 119 0.09 99
IV.FDMO.HHZ. 2023-07-04T15:45:26.83 0.6 positive manual P 6 21.0678 114 -0.07 49
7F.SIB3.EHZ. 2023-07-04T15:45:26.15 0.1 undecidable manual P 80 17.1717 119 -0.05 100
7F.SIB2.EHZ. 2023-07-04T15:45:26.54 0.1 undecidable manual P 76 20.2686 115 -0.2 96
IV.MMO1.EHZ. 2023-07-04T15:45:26.99 0.1 positive manual P 75 22.2555 113 -0.13 98
IV.FEMA.HNZ. 2023-07-04T15:45:25.85 0.3 undecidable manual P 355 12.7761 126 0.4 70
IV.NRCA.HHZ. 2023-07-04T15:45:24.69 0.1 undecidable manual P 110 4.4955 155 0.33 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.0 0.00163 0.18 AML other m 2023-07-04T15:45:26.43
IV.NRCA.HNE. ML:1.9 0.00143 0.08 AML other m 2023-07-04T15:45:26.43
IV.NRCA.HHN. ML:1.7 0.0008525000000000001 0.3 AML other m 2023-07-04T15:45:26.31
IV.NRCA.HNN. ML:1.6 0.0008049999999999999 0.08 AML other m 2023-07-04T15:45:26.42
IV.FDMO.HHN. ML:0.8 0.000044999999999999996 0.84 AML other m 2023-07-04T15:45:30.36
IV.CESI.HHE. ML:0.9 0.0000617 0.58 AML other m 2023-07-04T15:45:30.49
IV.CESI.HHN. ML:1.4 0.00016049999999999997 0.34 AML other m 2023-07-04T15:45:30.66
IV.MMO1.EHN. ML:1.2 0.00009365000000000001 0.72 AML other m 2023-07-04T15:45:30.78
IV.FDMO.HHE. ML:1.0 0.00007505000000000001 0.22 AML other m 2023-07-04T15:45:30.68
IV.MMO1.EHE. ML:1.3 0.00013450000000000002 0.8 AML other m 2023-07-04T15:45:30.90
IV.GAVE.EHN. ML:1.4 0.0001725 1.62 AML other m 2023-07-04T15:45:31.91
IV.GAVE.EHE. ML:1.6 0.00027 0.14 AML other m 2023-07-04T15:45:31.11
IV.ASSB.HHN. ML:1.0 0.000034750000000000004 0.34 AML other m 2023-07-04T15:45:35.81
IV.ASSB.HHE. ML:1.1 0.000046399999999999996 0.14 AML other m 2023-07-04T15:45:36.56
IV.MOMA.HHE. ML:1.0 0.00003575 0.76 AML other m 2023-07-04T15:45:37.41
IV.MOMA.HHN. ML:0.9 0.000030050000000000002 0.96 AML other m 2023-07-04T15:45:38.09
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