Earthquake with magnitude of ML 0.8 on date 23-05-2020 and time 18:25:02 (Italy) in region 3 km SE Norcia (PG)

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

  • 23-05-2020 16:25:02 (UTC)
  • 23-05-2020 18:25:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.78, 13.13 at 11 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
Norcia PG 3 4957 4957
Cascia PG 11 3217 8174
Preci PG 13 724 8898
Castelsantangelo sul Nera MC 13 281 9179
Accumoli RI 14 667 9846
Arquata del Tronto AP 14 1178 11024
Poggiodomo PG 17 117 11141
Visso MC 18 1107 12248
Cerreto di Spoleto PG 18 1075 13323
Cittareale RI 18 482 13805
Montegallo AP 19 523 14328
Ussita MC 19 444 14772
Monteleone di Spoleto PG 20 599 15371

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km SE of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
96 Km W of Pescara (121014 inhabitants)
98 Km W of Chieti (51815 inhabitants)
99 Km SW of Ancona (100861 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
Reviewed
Rev100
ML 0.8 2020-05-23
16:25:02
42.78 13.13 11 2020-05-23
16:39:17
Sala Sismica INGV-Roma 79485521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-23 16:25:02 ± 0.05
Latitude 42.78 ± 0.00
Longitude 13.13 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79485521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 356
Semi-minor axis of confidence ellipse (meter) 145
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.38311
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 11
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 79485521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-23 16:39:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TDS.HHZ. 2020-05-23T16:26:40.35 3.0 undecidable manual Sn -6.53 0
CH.FUORN.HHZ. 2020-05-23T16:26:39.29 3.0 undecidable manual Sn -3.75 0
IV.MILN.HHZ. 2020-05-23T16:26:37.94 3.0 undecidable manual Sg 8.04 0
GU.CANO.HHZ. 2020-05-23T16:26:28.73 3.0 undecidable manual Sn 1.62 0
IV.SERS.HHZ. 2020-05-23T16:26:26.17 3.0 positive manual Pg 18.860001 0
IV.TDS.HHZ. 2020-05-23T16:26:10.39 3.0 undecidable manual Pg 12.11 0
XK.SELL.HHZ. 2020-05-23T16:26:05.80 3.0 negative manual Pn -1.69 0
IV.PIPA.HHZ. 2020-05-23T16:25:57.23 3.0 positive manual Pn -6.2 0
IV.FREG.EHZ. 2020-05-23T16:25:51.11 3.0 negative manual Pg 8.16 0
GU.CANO.HHZ. 2020-05-23T16:25:50.36 3.0 negative manual Pg 3.19 0
IV.EUCT.HNZ. 2020-05-23T16:25:48.97 3.0 negative manual Pg 2.19 0
IV.ZCCA.HHZ. 2020-05-23T16:25:29.00 3.0 undecidable manual Pg 3.17 0
IV.SFI.EHZ. 2020-05-23T16:25:26.39 3.0 undecidable manual Sn -5.06 0
IT.FIE.HGZ. 2020-05-23T16:25:16.68 3.0 undecidable manual Pg -1.53 0
IV.TERO.HHZ. 2020-05-23T16:25:15.48 0.3 undecidable manual S 114 0.3831 91 -0.35 68
IV.MAON.HHZ. 2020-05-23T16:25:12.79 3.0 undecidable manual Pn -3.2 0
IV.FDMO.HHZ. 2020-05-23T16:25:12.23 0.3 undecidable manual S 354 0.2608 91 0.02 74
IV.CESI.HHE. 2020-05-23T16:25:12.78 0.3 undecidable manual S 325 0.2797 91 0.01 74
IV.RM33.EHZ. 2020-05-23T16:25:12.62 0.3 undecidable manual S 166 0.2752 91 -0.02 74
IT.MTCL.HGZ. 2020-05-23T16:25:11.37 0.3 undecidable manual S 337 0.2356 91 -0.1 73
IV.T1299.HNN. 2020-05-23T16:25:10.19 0.6 undecidable manual S 141 0.1826 92 0.29 47
IV.SMA1.EHE. 2020-05-23T16:25:10.89 0.6 undecidable manual S 134 0.2122 91 0.13 48
IV.MMO1.EHZ. 2020-05-23T16:25:09.93 0.3 undecidable manual S 50 0.1916 92 -0.22 72
IV.CPGN.EHZ. 2020-05-23T16:25:09.19 3.0 undecidable manual P -3.68 0
IV.TERO.HHZ. 2020-05-23T16:25:09.84 0.1 undecidable manual P 114 0.3831 91 -0.16 94
IV.LNSS.HHZ. 2020-05-23T16:25:09.81 0.3 undecidable manual S 200 0.1853 92 -0.16 73
IV.CESI.HHE. 2020-05-23T16:25:08.23 0.1 undecidable manual P 325 0.2797 91 0 98
IV.MC2.EHZ. 2020-05-23T16:25:08.88 0.3 undecidable manual S 19 0.1421 96 0.19 73
IV.RM33.EHZ. 2020-05-23T16:25:07.98 0.1 undecidable manual P 166 0.2752 91 -0.17 96
IV.SMA1.EHE. 2020-05-23T16:25:07.22 0.1 undecidable manual P 134 0.2122 91 0.15 96
IT.MTCL.HGZ. 2020-05-23T16:25:07.48 0.1 undecidable manual P 337 0.2356 91 0 99
IV.FDMO.HHZ. 2020-05-23T16:25:07.77 0.1 undecidable manual P 354 0.2608 91 -0.14 96
IV.LNSS.HHZ. 2020-05-23T16:25:06.52 0.1 undecidable manual P 200 0.1853 92 -0.09 99
IV.MMO1.EHZ. 2020-05-23T16:25:06.71 0.1 undecidable manual P 50 0.1916 92 0 100
IV.T1299.HNN. 2020-05-23T16:25:06.61 0.1 undecidable manual P 141 0.1826 92 0.04 99
IV.NRCA.HHZ. 2020-05-23T16:25:06.31 0.3 undecidable manual S 351 0.0576 141 -0.2 75
IV.MC2.EHZ. 2020-05-23T16:25:05.99 0.1 undecidable manual P 19 0.1421 96 0.12 99
IV.NRCA.HHZ. 2020-05-23T16:25:04.70 0.1 undecidable manual P 351 0.0576 141 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.000199 0.14 AML other m 2020-05-23T16:25:06.38
IV.NRCA.HHE. ML:1.2 0.000234 0.08 AML other m 2020-05-23T16:25:06.54
IV.RM33.EHN. ML:0.8 3.01E-5 0.1 AML other m 2020-05-23T16:25:12.85
IV.RM33.EHE. ML:0.5 1.675E-5 0.14 AML other m 2020-05-23T16:25:13.40
IV.TERO.HHN. ML:0.8 2.06E-5 0.8 AML other m 2020-05-23T16:25:15.81
IV.TERO.HHE. ML:0.5 1.035E-5 1.3 AML other m 2020-05-23T16:25:16.91
IV.CPGN.HNN. ML:2.7 0.000337 1.02 AML other m 2020-05-23T16:25:30.56
IV.CPGN.HNE. ML:2.6 0.000233 0.42 AML other m 2020-05-23T16:25:33.74
IV.FREG.EHE. ML:1.8 6.985E-6 0.42 AML other m 2020-05-23T16:26:23.57
GU.CANO.HHE. ML:3.5 0.0001415 0.84 AML other m 2020-05-23T16:26:39.44
IV.FREG.EHN. ML:1.8 6.88E-6 0.42 AML other m 2020-05-23T16:26:41.89
GU.CANO.HHN. ML:3.7 0.0002555 1.02 AML other m 2020-05-23T16:26:56.17
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