Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 31-05-2019 and time 23:50:46 (UTC) in region 2 km SE Norcia (PG)

A magnitude ML 0.8 earthquake occured in region: 2 km SE Norcia (PG), on

  • 31-05-2019 23:50:46 (UTC)
  • 01-06-2019 01:50:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7840, 13.1130 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.

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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
Norcia PG 2 4957 4957
Cascia PG 11 3217 8174
Preci PG 12 724 8898
Castelsantangelo sul Nera MC 13 281 9179
Accumoli RI 15 667 9846
Arquata del Tronto AP 15 1178 11024
Cerreto di Spoleto PG 16 1075 12099
Poggiodomo PG 17 117 12216
Visso MC 17 1107 13323
Ussita MC 18 444 13767
Cittareale RI 19 482 14249
Sellano PG 19 1079 15328
Montegallo AP 19 523 15851
Monteleone di Spoleto PG 20 599 16450

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SE of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km N of Tivoli (56533 inhabitants)
97 Km W of Pescara (121014 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
99 Km W of Chieti (51815 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 2019-05-31
23:50:46		 42.7843 13.1127 10 2019-06-01
00:02:07		 Sala Sismica INGV-Roma 69065491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-05-31 23:50:46 ± 0.05
Latitude 42.7843 ± 0.0027
Longitude 13.1127 ± 0.0037
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 69065491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 307
Semi-minor axis of confidence ellipse (meter) 209
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.42088
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 17
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 14
Type of magnitude ML
Reference to an origin 69065491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-06-01 00:02:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSSA.HHZ. 2019-05-31T23:52:31.45 3.0 undecidable manual Sg 25.76 0
OT.TAR1.HHZ. 2019-05-31T23:51:55.61 3.0 undecidable manual Sn -6.34 0
IV.MTGR.HHZ. 2019-05-31T23:51:35.70 3.0 undecidable manual Pn -1 0
OX.VARN.HHZ. 2019-05-31T23:51:30.75 3.0 negative manual Pn 6.17 0
IV.CDRU.HHZ. 2019-05-31T23:51:06.71 3.0 undecidable manual Pn -1.09 0
IV.RM33.EHZ. 2019-05-31T23:50:57.30 0.3 undecidable manual S 165 31.6461 50 -0.16 71
IV.APEC.HHZ. 2019-05-31T23:50:57.02 3.0 undecidable manual Pn -0.59 0
IV.CESI.HHZ. 2019-05-31T23:50:56.77 0.3 undecidable manual S 325 29.748 50 -0.18 71
IV.RMP.HHZ. 2019-05-31T23:50:56.30 3.0 undecidable manual Pg 2.64 0
IV.PTRJ.HNZ. 2019-05-31T23:50:56.12 3.0 undecidable manual Pn -0.37 0
IV.FDMO.HHZ. 2019-05-31T23:50:56.22 0.3 undecidable manual S 356 28.0497 50 -0.28 70
IV.TERO.HNZ. 2019-05-31T23:50:55.00 1.0 undecidable manual P 114 43.8228 50 0.37 22
IV.SMA1.EHZ. 2019-05-31T23:50:55.51 0.3 undecidable manual S 133 24.8529 112 -0.1 73
IV.LNSS.HHZ. 2019-05-31T23:50:54.18 0.3 undecidable manual S 196 20.9679 115 -0.18 72
IV.MTRA.EHZ. 2019-05-31T23:50:54.86 0.3 undecidable manual S 97 23.3544 113 -0.24 71
IV.GAVE.EHZ. 2019-05-31T23:50:54.15 0.3 undecidable manual S 240 20.5683 116 -0.07 74
IV.MMO1.EHZ. 2019-05-31T23:50:54.42 0.3 undecidable manual S 54 21.5673 115 -0.13 73
IV.ASSB.HHZ. 2019-05-31T23:50:54.96 0.3 undecidable manual P 308 46.7199 50 -0.1 70
IV.ARRO.EHZ. 2019-05-31T23:50:53.90 0.3 undecidable manual P 231 36.3414 50 0.43 67
IV.MC2.EHZ. 2019-05-31T23:50:53.00 0.3 undecidable manual S 24 15.3735 123 0.33 71
IV.GUMA.HHZ. 2019-05-31T23:50:53.88 0.3 undecidable manual P 30 35.742 50 0.5 66
IV.CSP1.EHZ. 2019-05-31T23:50:53.28 0.3 undecidable manual P 12 34.9428 50 0.03 73
IV.FDMO.HHZ. 2019-05-31T23:50:52.07 0.3 undecidable manual P 356 28.0497 50 -0.12 72
IV.CESI.HHZ. 2019-05-31T23:50:52.37 0.3 undecidable manual P 325 29.748 50 -0.09 73
IV.RM33.EHZ. 2019-05-31T23:50:52.58 0.3 undecidable manual P 165 31.6461 50 -0.17 71
IT.MTCL.HGE. 2019-05-31T23:50:51.55 0.3 undecidable manual P 338 25.0527 112 -0.15 72
IV.MMO1.EHZ. 2019-05-31T23:50:51.09 0.3 undecidable manual P 54 21.5673 115 0.03 75
IV.LNSS.HHZ. 2019-05-31T23:50:51.16 0.3 undecidable manual P 196 20.9679 115 0.2 72
IV.MTRA.EHZ. 2019-05-31T23:50:51.39 0.3 undecidable manual P 97 23.3544 113 0.01 75
IV.T1299.EHE. 2019-05-31T23:50:51.25 0.3 undecidable manual P 140 21.6672 115 0.17 72
IV.GAVE.EHZ. 2019-05-31T23:50:51.11 0.6 undecidable manual P 240 20.5683 116 0.23 48
IV.SMA1.EHZ. 2019-05-31T23:50:51.66 0.3 undecidable manual P 133 24.8529 112 -0.02 74
IV.MC2.EHZ. 2019-05-31T23:50:50.32 0.3 undecidable manual P 24 15.3735 123 0.34 71
IV.NRCA.HHZ. 2019-05-31T23:50:49.93 0.1 undecidable manual S 1 5.4945 151 -0.32 96
IV.NRCA.HHZ. 2019-05-31T23:50:48.71 0.1 undecidable manual P 1 5.4945 151 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1.0 0.00006465 0.3 AML other m 2019-05-31T23:50:54.75
IV.GAVE.EHE. ML:0.8 0.00004355 0.18 AML other m 2019-05-31T23:50:55.07
IV.GAVE.EHN. ML:0.8 0.0000468 0.68 AML other m 2019-05-31T23:50:55.41
IV.MTRA.EHE. ML:1.1 0.00007664999999999999 0.7 AML other m 2019-05-31T23:50:55.23
IV.MTRA.EHN. ML:0.8 0.0000475 0.54 AML other m 2019-05-31T23:50:55.70
IV.SMA1.EHN. ML:0.9 0.00004915 1.18 AML other m 2019-05-31T23:50:56.21
IV.FDMO.HHE. ML:0.6 0.000020749999999999996 0.26 AML other m 2019-05-31T23:50:56.99
IV.CESI.HHN. ML:1.0 0.0000454 0.26 AML other m 2019-05-31T23:50:56.86
IV.FDMO.HHN. ML:0.7 0.000022850000000000003 0.5 AML other m 2019-05-31T23:50:56.88
IV.SMA1.EHE. ML:0.8 0.000042300000000000005 0.64 AML other m 2019-05-31T23:50:59.73
IV.LNSS.HHE. ML:0.8 0.000046044494999999996 0.2048 AML other m 2019-05-31T23:50:54.91
IV.CESI.HHE. ML:0.6 0.000019101805 0.1152 AML other m 2019-05-31T23:50:56.98
IV.RM33.EHE. ML:0.6 0.00001901753 0.1152 AML other m 2019-05-31T23:50:57.95
IV.RM33.EHN. ML:0.7 0.000022958 0.1792 AML other m 2019-05-31T23:50:57.59
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