Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 16-03-2020 and time 17:25:41 (Italy) in region 5 km W Preci (PG)

A magnitude ML 1.0 earthquake occured in region: 5 km W Preci (PG), on

  • 16-03-2020 16:25:41 (UTC)
  • 16-03-2020 17:25:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8730, 12.9830 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
Preci PG 5 724 724
Sellano PG 5 1079 1803
Cerreto di Spoleto PG 8 1075 2878
Visso MC 11 1107 3985
Norcia PG 13 4957 8942
Monte Cavallo MC 14 145 9087
Castelsantangelo sul Nera MC 14 281 9368
Vallo di Nera PG 15 364 9732
Ussita MC 15 444 10176
Cascia PG 17 3217 13393
Campello sul Clitunno PG 18 2442 15835
Poggiodomo PG 18 117 15952
Trevi PG 19 8469 24421
Sant'Anatolia di Narco PG 20 564 24985
Pieve Torina MC 20 1458 26443

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
55 Km E of Perugia (166134 inhabitants)
64 Km W of Teramo (54892 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
99 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
Bulletin
Rev1000 		ML 1.0 2020-03-16
16:25:41		 42.873 12.9827 11 2020-07-18
21:08:35		 Bollettino Sismico Italiano INGV 78869761
Reviewed
Rev100 		ML 1.1 2020-03-16
16:25:41		 42.8747 12.9812 11 2020-03-16
16:56:31		 Sala Sismica INGV-Roma 77309191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-16 16:25:41 ± 0.07
Latitude 42.8730 ± 0.0036
Longitude 12.9827 ± 0.0061
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 78869761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 502
Semi-minor axis of confidence ellipse (meter) 370
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.10162
Epicentral distance of station farthest from the epicenter (degree) 0.31027
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 78869761
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-05 16:05:24

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 77309191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-16 16:56:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PF6.EHN. 2020-03-16T16:25:52.92 0.3 undecidable manual S 30 34.0437 50 0.15 71
IV.MOMA.HNZ. 2020-03-16T16:25:52.95 0.6 undecidable manual S 257 34.4433 50 0.07 48
IV.CSP1.EHZ. 2020-03-16T16:25:51.83 0.3 undecidable manual S 37 30.2475 50 0.07 72
IV.LNSS.HNZ. 2020-03-16T16:25:51.48 0.6 undecidable manual S 171 30.3474 50 -0.31 46
IV.MML1.HNZ. 2020-03-16T16:25:50.73 0.3 undecidable manual S 358 26.6511 50 -0.08 72
IV.FDMO.HHZ. 2020-03-16T16:25:48.85 0.3 undecidable manual S 25 20.0688 118 -0.11 73
IV.MOMA.HNZ. 2020-03-16T16:25:48.26 0.3 undecidable manual P 257 34.4433 50 0.35 67
IV.CSP1.EHZ. 2020-03-16T16:25:47.16 0.3 undecidable manual P 37 30.2475 50 -0.1 72
IV.PF6.EHN. 2020-03-16T16:25:47.85 0.3 undecidable manual P 30 34.0437 50 0.01 73
IV.CESI.HHZ. 2020-03-16T16:25:47.57 0.3 undecidable manual S 337 15.9729 123 -0.17 72
IV.NRCA.HHZ. 2020-03-16T16:25:46.47 0.1 undecidable manual S 112 11.5773 132 -0.07 99
IV.LNSS.HNZ. 2020-03-16T16:25:46.95 0.6 undecidable manual P 171 30.3474 50 -0.33 46
IT.MTCL.HGZ. 2020-03-16T16:25:46.70 0.1 undecidable manual S 6 13.4754 128 -0.35 93
IV.FEMA.HNZ. 2020-03-16T16:25:46.63 0.1 undecidable manual S 29 11.2776 133 0.16 98
IV.MML1.HNZ. 2020-03-16T16:25:46.61 0.1 undecidable manual P 358 26.6511 50 -0.1 96
IV.FDMO.HHZ. 2020-03-16T16:25:45.60 0.1 undecidable manual P 25 20.0688 118 -0.05 98
IV.FEMA.HNZ. 2020-03-16T16:25:44.79 0.1 undecidable manual P 29 11.2776 133 0.58 88
IV.CESI.HHZ. 2020-03-16T16:25:44.94 0.1 undecidable manual P 337 15.9729 123 0 100
IV.NRCA.HHZ. 2020-03-16T16:25:44.30 0.1 undecidable manual P 112 11.5773 132 0.05 100
IT.MTCL.HGZ. 2020-03-16T16:25:44.57 0.3 undecidable manual P 6 13.4754 128 0.03 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.2 0.00011430000000000001 0.14 AML other m 2020-03-16T16:25:48.99
IV.FDMO.HHN. ML:1.0 0.00006884999999999999 0.14 AML other m 2020-03-16T16:25:49.24
IV.NRCA.HNE. ML:1.2 0.0001635417 0.1024 AML other m 2020-03-16T16:25:46.82
IV.NRCA.HNN. ML:1.2 0.00017547570000000002 0.1024 AML other m 2020-03-16T16:25:46.63
IV.NRCA.HHN. ML:1.2 0.00015825045 0.0768 AML other m 2020-03-16T16:25:46.64
IV.NRCA.HHE. ML:1.2 0.00018711604999999996 0.1024 AML other m 2020-03-16T16:25:46.76
IV.CESI.HHN. ML:0.8 0.000061712445 0.1408 AML other m 2020-03-16T16:25:47.96
IV.CESI.HHE. ML:0.6 0.000041648795 0.1408 AML other m 2020-03-16T16:25:47.86
IV.CSP1.EHN. ML:0.3 0.000010607930000000001 0.1792 AML other m 2020-03-16T16:25:52.51
IV.CSP1.EHE. ML:0.7 0.000027147438 0.2688 AML other m 2020-03-16T16:25:52.36
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