Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 31-05-2020 and time 11:11:44 (UTC) in region 6 km NW Preci (PG)

A magnitude ML 0.8 earthquake occured in region: 6 km NW Preci (PG), on

  • 31-05-2020 11:11:44 (UTC)
  • 31-05-2020 13:11:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9260, 12.9990 at 12 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 6 724 724
Sellano PG 7 1079 1803
Visso MC 7 1107 2910
Monte Cavallo MC 8 145 3055
Ussita MC 12 444 3499
Castelsantangelo sul Nera MC 13 281 3780
Cerreto di Spoleto PG 14 1075 4855
Pieve Torina MC 14 1458 6313
Fiordimonte MC 15 202 6515
Norcia PG 17 4957 11472
Serravalle di Chienti MC 17 1070 12542
Pievebovigliana MC 17 866 13408
Fiastra MC 18 559 13967
Muccia MC 18 915 14882
Acquacanina MC 19 121 15003

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
54 Km E of Perugia (166134 inhabitants)
65 Km W of Teramo (54892 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 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 0.8 2020-05-31
11:11:44		 42.9258 12.9987 12 2020-05-31
11:21:40		 Sala Sismica INGV-Roma 79748951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-31 11:11:44 ± 0.06
Latitude 42.9258 ± 0.0036
Longitude 12.9987 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79748951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 347
Semi-minor axis of confidence ellipse (meter) 300
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 213
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 18
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.33635
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 79748951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-31 11:21:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATTE.HHZ. 2020-05-31T11:12:06.88 3.0 undecidable manual S 0.13 0
IV.MMO1.EHZ. 2020-05-31T11:11:54.42 0.3 undecidable manual S 96 26.8509 93 -0.1 72
IT.TRN1.HGZ. 2020-05-31T11:11:54.76 3.0 negative manual P -0.1 0
IV.CSP1.EHZ. 2020-05-31T11:11:53.89 0.3 undecidable manual S 42 24.8529 93 -0.11 72
IV.MOMA.HNZ. 2020-05-31T11:11:52.11 0.6 undecidable manual P 249 37.3293 92 0.03 48
IV.MC2.EHZ. 2020-05-31T11:11:51.81 0.3 undecidable manual S 96 15.5733 103 0.28 71
IV.FDMO.HHZ. 2020-05-31T11:11:50.96 0.1 undecidable manual S 30 14.2746 107 -0.23 96
IV.CSP1.EHZ. 2020-05-31T11:11:50.20 0.3 undecidable manual P 42 24.8529 93 0.05 73
IV.ASSB.HHE. 2020-05-31T11:11:50.86 0.3 undecidable manual P 295 30.4473 92 -0.16 71
IV.NRCA.HHZ. 2020-05-31T11:11:50.91 0.1 undecidable manual S 137 13.875 109 -0.19 96
IV.MMO1.EHZ. 2020-05-31T11:11:50.37 0.3 undecidable manual P 96 26.8509 93 -0.08 72
IV.CESI.HNZ. 2020-05-31T11:11:50.57 0.3 undecidable manual S 319 11.6772 118 0.02 75
IT.MTCL.HGZ. 2020-05-31T11:11:49.43 0.3 undecidable manual S 0 7.5813 137 -0.25 72
IV.FEMA.HNZ. 2020-05-31T11:11:49.50 0.1 undecidable manual S 46 5.7942 146 0.11 100
IV.MC2.EHZ. 2020-05-31T11:11:48.82 0.3 undecidable manual P 96 15.5733 103 0.09 74
IV.CESI.HNZ. 2020-05-31T11:11:48.39 0.1 undecidable manual P 319 11.6772 118 0.23 96
IV.FDMO.HHZ. 2020-05-31T11:11:48.60 0.1 undecidable manual P 30 14.2746 107 0.07 99
IV.NRCA.HHZ. 2020-05-31T11:11:48.51 0.3 undecidable manual P 137 13.875 109 0.03 75
IV.FEMA.HNZ. 2020-05-31T11:11:47.73 0.1 undecidable manual P 46 5.7942 146 0.24 97
IT.MTCL.HGZ. 2020-05-31T11:11:47.61 0.3 undecidable manual P 0 7.5813 137 -0.05 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.8 0.00006659786 0.0832 AML other m 2020-05-31T11:11:51.69
IV.NRCA.HHN. ML:1.0 0.00009474606 0.1024 AML other m 2020-05-31T11:11:51.05
IV.NRCA.HNE. ML:0.8 0.000058461435 0.0768 AML other m 2020-05-31T11:11:51.24
IV.NRCA.HNN. ML:1.1 0.00012097960000000001 0.3392 AML other m 2020-05-31T11:11:51.18
IV.CSP1.EHE. ML:0.2 0.000010916052 0.2432 AML other m 2020-05-31T11:11:54.57
IV.CSP1.EHN. ML:0.2 0.000009149879999999999 0.2368 AML other m 2020-05-31T11:11:54.18
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