Earthquake with magnitude of ML 1.5 on date 30-11-2023 and time 18:57:35 (UTC) in region 3 km E Massa Martana (PG)

A magnitude ML 1.5 earthquake occured in region: 3 km E Massa Martana (PG), on

  • 30-11-2023 18:57:35 (UTC)
  • 30-11-2023 19:57:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7660, 12.5610 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Massa Martana PG 3 3770 3770
Giano dell'Umbria PG 8 3846 7616
Acquasparta TR 8 4778 12394
Castel Ritaldi PG 11 3278 15672
Todi PG 13 16851 32523
Montecastrilli TR 14 5022 37545
Spoleto PG 15 38218 75763
Gualdo Cattaneo PG 16 6155 81918
Montefalco PG 16 5679 87597
Avigliano Umbro TR 16 2558 90155
San Gemini TR 17 5018 95173
Collazzone PG 18 3473 98646
Campello sul Clitunno PG 19 2442 101088
Monte Castello di Vibio PG 19 1567 102655
Fratta Todina PG 19 1839 104494
Bevagna PG 19 5081 109575
Trevi PG 20 8469 118044

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NW of Terni (111501 inhabitants)
24 Km SW of Foligno (57155 inhabitants)
41 Km SE of Perugia (166134 inhabitants)
54 Km NE of Viterbo (67173 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
86 Km N of Guidonia Montecelio (88673 inhabitants)
91 Km N of Tivoli (56533 inhabitants)
94 Km W of Teramo (54892 inhabitants)
96 Km SE of Arezzo (99543 inhabitants)
97 Km N of Roma (2864731 inhabitants)
98 Km NE of Civitavecchia (52991 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 2023-11-30
18:57:35
42.7655 12.561 10 2023-11-30
19:07:42
Sala Sismica INGV-Roma 123596571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-11-30 18:57:35 ± 0.1
Latitude 42.7655 ± 0.0027
Longitude 12.5610 ± 0.0110
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 123596571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 870
Semi-minor axis of confidence ellipse (meter) 328
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 264
Circular confidence region, given by single value of horizontal uncertainty (meter) 870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 197
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.03867
Epicentral distance of station farthest from the epicenter (degree) 0.57736
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 123596571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-11-30 19:07:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2023-11-30T18:57:55.08 0.6 undecidable manual S 76 64.0914 50 -0.12 45
IV.RM33.EHZ. 2023-11-30T18:57:54.38 0.6 undecidable manual S 118 60.495 50 0.14 45
IV.NRCA.HHZ. 2023-11-30T18:57:50.47 0.3 undecidable manual S 80 45.621 50 0.18 69
IV.LNSS.HHE. 2023-11-30T18:57:49.52 0.3 undecidable manual S 115 43.0236 50 -0.07 71
IV.MMO1.EHZ. 2023-11-30T18:57:47.00 0.3 undecidable manual P 76 64.0914 50 0.14 68
IV.ASSB.HHZ. 2023-11-30T18:57:46.38 0.1 undecidable manual S 14 31.746 50 -0.19 94
IV.RM33.EHZ. 2023-11-30T18:57:46.08 0.3 undecidable manual P 118 60.495 50 -0.22 67
IV.NRCA.HHZ. 2023-11-30T18:57:44.03 0.1 undecidable manual P 80 45.621 50 0.01 96
IV.LNSS.HHE. 2023-11-30T18:57:43.57 0.3 undecidable manual P 115 43.0236 50 -0.05 71
IV.CESX.HHZ. 2023-11-30T18:57:42.25 0.3 undecidable manual S 173 17.5713 120 -0.26 72
IV.ASSB.HHZ. 2023-11-30T18:57:41.90 0.3 undecidable manual P 14 31.746 50 0.02 73
IV.ARRO.EHZ. 2023-11-30T18:57:41.17 0.6 undecidable manual P 141 26.5512 50 0.09 49
IV.CESX.HHZ. 2023-11-30T18:57:39.65 0.1 undecidable manual P 173 17.5713 120 0.12 98
IV.MOMA.HHZ. 2023-11-30T18:57:39.17 0.1 undecidable manual S 10 4.2957 157 -0.15 100
IT.GNU.HGZ. 2023-11-30T18:57:39.17 0.1 undecidable manual S 10 4.2957 157 -0.15 100
IT.GNU.HGZ. 2023-11-30T18:57:37.93 0.1 undecidable manual P 10 4.2957 157 0.24 98
IV.MOMA.HHZ. 2023-11-30T18:57:37.94 0.1 undecidable manual P 10 4.2957 157 0.25 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.4 0.000195 0.18 AML other m 2023-11-30T18:57:42.60
IV.CESX.HHE. ML:1.2 0.000141 0.38 AML other m 2023-11-30T18:57:43.76
IV.NRCA.HHN. ML:1.4 0.00008085 1.44 AML other m 2023-11-30T18:57:51.81
IV.NRCA.HHE. ML:1.5 0.00009485 0.12 AML other m 2023-11-30T18:57:52.42
IV.MOMA.HHE. ML:1.8 0.00118032205 0.1152 AML other m 2023-11-30T18:57:39.91
IV.MOMA.HHN. ML:1.8 0.0010793782 0.2688 AML other m 2023-11-30T18:57:39.46
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download