Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 11-12-2019 and time 17:31:28 (Italy) in region 9 km SE Valtopina (PG)

A magnitude ML 0.8 earthquake occured in region: 9 km SE Valtopina (PG), on

  • 11-12-2019 16:31:28 (UTC)
  • 11-12-2019 17:31:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9890, 12.8080 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Valtopina PG 9 1398 1398
Foligno PG 9 57155 58553
Spello PG 11 8645 67198
Trevi PG 13 8469 75667
Nocera Umbra PG 14 5839 81506
Sellano PG 15 1079 82585
Serravalle di Chienti MC 15 1070 83655
Monte Cavallo MC 16 145 83800
Montefalco PG 16 5679 89479
Bevagna PG 17 5081 94560
Assisi PG 18 28299 122859
Cannara PG 18 4305 127164
Campello sul Clitunno PG 19 2442 129606

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km E of Foligno (57155 inhabitants)
37 Km E of Perugia (166134 inhabitants)
49 Km N of Terni (111501 inhabitants)
82 Km W of Teramo (54892 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
86 Km NW of L'Aquila (69753 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
92 Km SE of Arezzo (99543 inhabitants)
97 Km S of Fano (60888 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
Bulletin
Rev1000 		ML 0.8 2019-12-11
16:31:28		 42.989 12.8083 11 2020-02-28
16:42:18		 Bollettino Sismico Italiano INGV 75516231
Reviewed
Rev100 		ML 0.9 2019-12-11
16:31:28		 42.9922 12.8072 11 2019-12-11
16:42:52		 Sala Sismica INGV-Roma 74556981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-11 16:31:28 ± 0.04
Latitude 42.9890 ± 0.0045
Longitude 12.8083 ± 0.0025
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 75516231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 454
Semi-minor axis of confidence ellipse (meter) 229
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 350
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
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 31
Number of defining phases 23
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) 0.40200
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 74556981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-11 16:42:52

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 75516231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-13 14:19:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTGR.HHZ. 2019-12-11T16:32:57.67 3.0 undecidable manual Pg 14.58 0
IV.NDIM.HNZ. 2019-12-11T16:32:44.81 3.0 undecidable manual Sg 2.94 0
IV.TDS.HHZ. 2019-12-11T16:32:39.59 3.0 negative manual Pg 7.39 0
IV.IFOR.HHZ. 2019-12-11T16:32:28.50 3.0 undecidable manual Sn -7.99 0
GU.POPM.HHZ. 2019-12-11T16:32:27.78 3.0 undecidable manual Sg -0.59 0
IV.VULT.HHZ. 2019-12-11T16:32:12.51 3.0 undecidable manual Pn -1.51 0
IV.RCAV.EHZ. 2019-12-11T16:32:02.76 3.0 undecidable manual S -1.51 0
IV.SRES.HHZ. 2019-12-11T16:31:52.22 3.0 undecidable manual S -0.34 0
IV.MC2.EHZ. 2019-12-11T16:31:39.41 0.6 undecidable manual S 105 32.0457 50 0.01 49
IV.NRCA.HHZ. 2019-12-11T16:31:38.67 0.3 undecidable manual S 125 30.2475 50 -0.24 70
IV.MOMA.HHZ. 2019-12-11T16:31:38.43 0.1 undecidable manual S 223 28.2495 50 0.06 97
IV.FEMA.HNE. 2019-12-11T16:31:36.15 0.3 undecidable manual S 99 19.7691 50 0.03 74
IV.EL6.EHE. 2019-12-11T16:31:36.67 0.1 undecidable manual P 32 44.622 50 0.03 95
IV.FDMO.HHZ. 2019-12-11T16:31:36.97 0.3 undecidable manual S 77 23.2545 50 -0.06 73
IV.MMO1.EHN. 2019-12-11T16:31:36.16 0.6 undecidable manual P 103 43.2234 50 -0.27 45
IV.CSP1.EHE. 2019-12-11T16:31:35.28 0.1 undecidable manual P 70 34.1436 50 0.26 92
IV.MML1.EHZ. 2019-12-11T16:31:35.80 0.3 undecidable manual S 44 19.1697 119 -0.12 73
IV.NRCA.HHZ. 2019-12-11T16:31:34.25 0.1 undecidable manual P 125 30.2475 50 -0.18 94
IV.MOMA.HHZ. 2019-12-11T16:31:34.32 0.1 undecidable manual P 223 28.2495 50 0.2 94
IV.MC2.EHZ. 2019-12-11T16:31:34.51 0.1 undecidable manual P 105 32.0457 50 -0.2 94
IV.ASSB.HHZ. 2019-12-11T16:31:34.15 0.3 undecidable manual S 296 13.4754 129 -0.16 73
IT.GNU.HGZ. 2019-12-11T16:31:34.48 1.0 undecidable manual P 223 28.2495 50 0.36 23
IT.MTCL.HGE. 2019-12-11T16:31:34.88 0.1 undecidable manual S 88 15.4734 125 0.02 100
IV.CESI.HHZ. 2019-12-11T16:31:33.04 0.3 undecidable manual S 77 7.9809 143 0.08 75
IV.FDMO.HHZ. 2019-12-11T16:31:33.38 0.6 positive manual P 77 23.2545 50 0.03 49
IT.MTCL.HGE. 2019-12-11T16:31:32.26 0.1 undecidable manual P 88 15.4734 125 0.17 97
IV.MML1.EHZ. 2019-12-11T16:31:32.72 0.1 undecidable manual P 44 19.1697 119 0.01 100
IV.FEMA.HNE. 2019-12-11T16:31:32.89 0.1 undecidable manual P 99 19.7691 50 0.07 98
IV.CESI.HHZ. 2019-12-11T16:31:31.13 0.1 undecidable manual P 77 7.9809 143 0.13 99
IV.ASSB.HHZ. 2019-12-11T16:31:31.73 0.1 undecidable manual P 296 13.4754 129 -0.04 100
IT.FOPC.HGN. 2019-12-11T16:31:30.73 0.6 undecidable manual P 256 8.7801 141 -0.37 47
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.0 0.00013842850000000002 0.0512 AML other m 2019-12-11T16:31:33.33
IV.CESI.HNE. ML:1.0 0.000118896385 0.0512 AML other m 2019-12-11T16:31:33.36
IV.CESI.HHN. ML:0.7 0.00006819925999999999 0.1152 AML other m 2019-12-11T16:31:33.42
IV.ASSB.HHN. ML:1.0 0.000100562405 0.1024 AML other m 2019-12-11T16:31:34.40
IV.ASSB.HHE. ML:0.9 0.00007437456 0.1536 AML other m 2019-12-11T16:31:34.66
IV.FDMO.HHN. ML:0.6 0.000024124313500000002 0.2048 AML other m 2019-12-11T16:31:37.23
IV.NRCA.HHN. ML:0.9 0.000034546241649999996 0.1024 AML other m 2019-12-11T16:31:38.86
IV.NRCA.HHE. ML:0.7 0.000025469485 0.1024 AML other m 2019-12-11T16:31:40.20
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