INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.8 on date 04-12-2018 and time 19:45:10 (Italy) in region 3 km NW Valfabbrica (PG)

A magnitude ML 0.8 earthquake occured in region: 3 km NW Valfabbrica (PG), on

  • 04-12-2018 18:45:10 (UTC)
  • 04-12-2018 19:45:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.18, 12.57 at 9 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
Valfabbrica PG 3 3389 3389
Assisi PG 12 28299 31688
Bastia Umbra PG 12 21874 53562
Perugia PG 17 166134 219696
Gualdo Tadino PG 19 15208 234904
Nocera Umbra PG 19 5839 240743
Bettona PG 19 4367 245110
Valtopina PG 20 1398 246508
Cannara PG 20 4305 250813
Torgiano PG 20 6725 257538
Gubbio PG 20 32216 289754

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Perugia (166134 inhabitants)
27 Km NW of Foligno (57155 inhabitants)
65 Km SE of Arezzo (99543 inhabitants)
69 Km N of Terni (111501 inhabitants)
83 Km SW of Fano (60888 inhabitants)
86 Km SW of Pesaro (94582 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
99 Km S of Rimini (147750 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 0.8 2018-12-04
18:45:10
43.18 12.57 9 2018-12-04
18:53:33
Sala Sismica INGV-Roma 63641391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-04 18:45:10 ± 0.08
Latitude 43.18 ± 0.00
Longitude 12.57 ± 0.01
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 63641391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 546
Semi-minor axis of confidence ellipse (meter) 339
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 29
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
Epicentral distance of station farthest from the epicenter (degree) 0.5369
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 63641391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-04 18:53:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.OFFI.HHZ. 2018-12-04T18:45:37.78 3.0 undecidable manual S 0
IV.GAVE.HNN. 2018-12-04T18:45:29.16 0.3 undecidable manual S 154 0.5369 50 0.05 71
IV.CAFI.HHZ. 2018-12-04T18:45:26.92 0.6 undecidable manual S 289 0.4667 50 -0.09 48
IV.FDMO.HHZ. 2018-12-04T18:45:25.26 0.6 undecidable manual S 110 0.4011 50 0.19 47
IV.EL6.EHZ. 2018-12-04T18:45:25.72 0.3 undecidable manual S 68 0.4155 50 0.22 70
IV.MOMA.HHZ. 2018-12-04T18:45:24.39 0.6 undecidable manual S 180 0.3705 50 0.22 47
IV.PIEI.HHZ. 2018-12-04T18:45:23.89 0.6 undecidable manual S 356 0.3615 50 0 49
IV.CESI.HHZ. 2018-12-04T18:45:22.07 0.3 undecidable manual S 125 0.2968 50 0.09 74
IV.ATPI.EHZ. 2018-12-04T18:45:22.16 0.6 undecidable manual S 336 0.3013 50 0.03 50
IV.SNTG.HHZ. 2018-12-04T18:45:21.12 0.3 undecidable manual S 73 0.2806 50 -0.38 70
IV.GAVE.HNN. 2018-12-04T18:45:20.77 0.1 undecidable manual P 154 0.5369 50 -0.4 88
IV.CAFI.HHZ. 2018-12-04T18:45:20.08 1.0 positive manual P 289 0.4667 50 0.11 24
IV.EL6.EHZ. 2018-12-04T18:45:19.03 0.1 undecidable manual P 68 0.4155 50 -0.06 96
IV.MOMA.HHZ. 2018-12-04T18:45:19.84 0.1 undecidable manual P 180 0.3705 50 1.51 55
IV.FOSV.EHZ. 2018-12-04T18:45:18.27 0.3 undecidable manual S 49 0.1826 115 0.17 74
IV.PIEI.HHZ. 2018-12-04T18:45:18.04 1.0 positive manual P 356 0.3615 50 -0.13 24
IV.FDMO.HHZ. 2018-12-04T18:45:18.40 0.1 undecidable manual P 110 0.4011 50 -0.45 89
IV.CESI.HHZ. 2018-12-04T18:45:17.06 0.1 undecidable manual P 125 0.2968 50 0 100
IV.ASSB.HHZ. 2018-12-04T18:45:16.59 0.3 undecidable manual S 154 0.1466 120 -0.27 73
IV.ATPI.EHZ. 2018-12-04T18:45:16.91 0.6 positive manual P 336 0.3013 50 -0.24 48
IV.ATTE.HHZ. 2018-12-04T18:45:16.95 0.6 undecidable manual S 278 0.1601 118 -0.37 48
IV.SNTG.HHZ. 2018-12-04T18:45:16.76 0.1 undecidable manual P 73 0.2806 50 -0.03 100
IV.ATVO.HHZ. 2018-12-04T18:45:15.65 0.3 undecidable manual P 330 0.2392 109 -0.33 71
IV.MURB.HHZ. 2018-12-04T18:45:15.57 0.6 undecidable manual S 339 0.0944 132 0.36 48
IV.FOSV.EHZ. 2018-12-04T18:45:14.95 0.1 undecidable manual P 49 0.1826 115 0.13 100
IV.ATCC.EHZ. 2018-12-04T18:45:14.24 0.6 undecidable manual S 79 0.0513 149 0.11 51
IV.ATTE.HHZ. 2018-12-04T18:45:14.51 0.6 positive manual P 278 0.1601 118 0.14 50
IV.MURB.HHZ. 2018-12-04T18:45:13.36 0.6 undecidable manual P 339 0.0944 132 0.2 50
IV.ASSB.HHZ. 2018-12-04T18:45:13.91 0.1 undecidable manual P 154 0.1466 120 -0.2 99
IV.ATCC.EHZ. 2018-12-04T18:45:12.69 0.6 undecidable manual P 79 0.0513 149 0.15 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OFFI.HHN. ML:2.3 0.0001935 0.06 AML other m 2018-12-04T18:45:39.13
IV.ATCC.EHN. ML:1.3 0.000376 0.4 AML other m 2018-12-04T18:45:14.51
IV.MURB.HHE. ML:1.5 0.000437 0.34 AML other m 2018-12-04T18:45:15.91
IV.MURB.HHN. ML:1.5 0.0003845 0.42 AML other m 2018-12-04T18:45:16.95
IV.ASSB.HHE. ML:0.9 7.505E-5 0.88 AML other m 2018-12-04T18:45:16.55
IV.ASSB.HHN. ML:1 0.00010045 0.08 AML other m 2018-12-04T18:45:17.08
IV.PIEI.HHN. ML:0.9 2.49E-5 1.58 AML other m 2018-12-04T18:45:24.85
IV.PIEI.HHE. ML:0.9 2.69E-5 0.14 AML other m 2018-12-04T18:45:24.74
IV.OFFI.HHE. ML:2.4 0.0002675 0.9 AML other m 2018-12-04T18:45:39.58
IV.ATCC.EHE. ML:1.4 0.0004605 0.36 AML other m 2018-12-04T18:45:14.49
IV.ATTE.HHE. ML:0.5 2.7196485E-5 0.1024 AML other m 2018-12-04T18:45:17.95
IV.ATTE.HHN. ML:0.7 4.728413E-5 0.1408 AML other m 2018-12-04T18:45:17.79
IV.FOSV.EHN. ML:0.6 3.1626985E-5 0.1024 AML other m 2018-12-04T18:45:18.70
IV.FOSV.EHE. ML:0.5 2.540959E-5 0.2304 AML other m 2018-12-04T18:45:18.55
IV.SNTG.HHE. ML:0.5 1.3559025E-5 0.1152 AML other m 2018-12-04T18:45:21.95
IV.SNTG.HHN. ML:0.5 1.5950461E-5 0.1536 AML other m 2018-12-04T18:45:22.16
IV.ATPI.EHE. ML:0.5 1.52686835E-5 0.704 AML other m 2018-12-04T18:45:21.47
IV.ATPI.EHN. ML:0.4 1.1695259E-5 1.1392 AML other m 2018-12-04T18:45:22.30
IV.CESI.HHE. ML:0.9 3.373643E-5 0.064 AML other m 2018-12-04T18:45:22.33
IV.CESI.HHN. ML:0.8 2.4970875E-5 0.0896 AML other m 2018-12-04T18:45:22.55
IV.FDMO.HHN. ML:1 3.025202E-5 0.1792 AML other m 2018-12-04T18:45:25.88
IV.FDMO.HHE. ML:1 3.1587545E-5 0.128 AML other m 2018-12-04T18:45:25.48
IV.EL6.EHN. ML:1 3.1593043E-5 3.5712 AML other m 2018-12-04T18:45:25.23
IV.EL6.EHE. ML:1.1 3.5728415E-5 1.9328 AML other m 2018-12-04T18:45:26.17
IV.CAFI.HHE. ML:0.8 1.61918915E-5 2.2528 AML other m 2018-12-04T18:45:28.99
IV.CAFI.HHN. ML:0.8 1.5021466E-5 0.384 AML other m 2018-12-04T18:45:28.51
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download