Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 26-06-2023 and time 20:25:04 (Italy) in region 6 km E Castelsantangelo sul Nera (MC)

A magnitude ML 1.2 earthquake occured in region: 6 km E Castelsantangelo sul Nera (MC), on

  • 26-06-2023 18:25:04 (UTC)
  • 26-06-2023 20:25:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9160, 13.2230 at 8 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
Castelsantangelo sul Nera MC 6 281 281
Ussita MC 8 444 725
Montemonaco AP 9 604 1329
Bolognola MC 9 142 1471
Montefortino FM 10 1178 2649
Visso MC 11 1107 3756
Montegallo AP 12 523 4279
Amandola FM 13 3629 7908
Acquacanina MC 13 121 8029
Fiastra MC 15 559 8588
Sarnano MC 15 3264 11852
Preci PG 16 724 12576
Comunanza AP 16 3166 15742
Arquata del Tronto AP 17 1178 16920
Norcia PG 17 4957 21877
Fiordimonte MC 17 202 22079
Palmiano AP 19 196 22275
Gualdo MC 19 815 23090
Pievebovigliana MC 20 866 23956

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
49 Km NW of Teramo (54892 inhabitants)
61 Km NE of Terni (111501 inhabitants)
64 Km N of L'Aquila (69753 inhabitants)
71 Km E of Perugia (166134 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
88 Km NW of Montesilvano (53738 inhabitants)
95 Km NW of Pescara (121014 inhabitants)
100 Km NW of Chieti (51815 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 1.2 2023-06-26
18:25:04		 42.9157 13.2232 8 2023-06-26
18:30:08		 Sala Sismica INGV-Roma 118742781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-06-26 18:25:04 ± 0.13
Latitude 42.9157 ± 0.0045
Longitude 13.2232 ± 0.0135
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 118742781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1105
Semi-minor axis of confidence ellipse (meter) 150
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 259
Circular confidence region, given by single value of horizontal uncertainty (meter) 1110.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 168
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.11421
Epicentral distance of station farthest from the epicenter (degree) 0.43167
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 118742781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-06-26 18:30:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2023-06-26T18:25:20.76 0.3 undecidable manual S 348 46.9197 50 0.96 54
IV.RM33.EHZ. 2023-06-26T18:25:19.52 0.6 undecidable manual S 181 45.1215 50 0.21 47
IV.ASSB.HHZ. 2023-06-26T18:25:19.73 0.6 undecidable manual S 287 47.9187 50 -0.34 45
IV.SMA1.EHZ. 2023-06-26T18:25:15.80 0.6 undecidable manual S 164 32.9448 103 0.05 49
IV.MML1.EHZ. 2023-06-26T18:25:14.61 0.6 undecidable manual S 317 29.9478 104 -0.13 49
IV.ASSB.HHZ. 2023-06-26T18:25:13.11 1.0 undecidable manual P 287 47.9187 50 -0.18 23
IV.RM33.EHZ. 2023-06-26T18:25:12.68 0.6 positive manual P 181 45.1215 50 -0.17 47
IV.EL6.EHZ. 2023-06-26T18:25:12.67 0.1 undecidable manual P 348 46.9197 50 -0.46 89
IV.CSP1.EHZ. 2023-06-26T18:25:11.40 0.6 undecidable manual S 356 19.5693 111 0.09 50
IV.FDMO.HHZ. 2023-06-26T18:25:10.68 0.6 undecidable manual S 321 17.3715 113 0.09 50
IV.SMA1.EHZ. 2023-06-26T18:25:10.48 0.6 undecidable manual P 164 32.9448 103 -0.31 47
IV.NRCA.HHZ. 2023-06-26T18:25:09.44 0.6 undecidable manual S 224 12.6762 121 0.29 49
IV.MML1.EHZ. 2023-06-26T18:25:09.84 0.6 undecidable manual P 317 29.9478 104 -0.37 47
IV.CSP1.EHZ. 2023-06-26T18:25:08.24 0.6 positive manual P 356 19.5693 111 0.01 51
IV.FDMO.HHZ. 2023-06-26T18:25:07.78 0.6 negative manual P 321 17.3715 113 -0.03 51
IV.NRCA.HHZ. 2023-06-26T18:25:07.16 0.1 positive manual P 224 12.6762 121 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.6 0.0005164999999999999 1.32 AML other m 2023-06-26T18:25:09.11
IV.NRCA.HHN. ML:1.8 0.0006995 1.6 AML other m 2023-06-26T18:25:10.88
IV.CSP1.EHN. ML:1.3 0.0001555 0.36 AML other m 2023-06-26T18:25:12.75
IV.CSP1.EHE. ML:1.2 0.0001375 0.46 AML other m 2023-06-26T18:25:14.31
IV.MML1.EHN. ML:1.2 0.00006905 0.18 AML other m 2023-06-26T18:25:15.18
IV.MML1.EHE. ML:1.1 0.00005935 0.14 AML other m 2023-06-26T18:25:15.24
IV.ASSB.HHE. ML:1.0 0.000024099999999999996 1.68 AML other m 2023-06-26T18:25:20.96
IV.ASSB.HHN. ML:0.9 0.00002175 0.5 AML other m 2023-06-26T18:25:21.72
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