Earthquake with magnitude of ML 1.5 on date 21-05-2020 and time 15:43:13 (UTC) in region 5 km E Norcia (PG)

A magnitude ML 1.5 earthquake occured in region: 5 km E Norcia (PG), on

  • 21-05-2020 15:43:13 (UTC)
  • 21-05-2020 17:43:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.78, 13.15 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.

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 5 4957 4957
Arquata del Tronto AP 12 1178 6135
Castelsantangelo sul Nera MC 12 281 6416
Accumoli RI 13 667 7083
Cascia PG 13 3217 10300
Preci PG 14 724 11024
Montegallo AP 16 523 11547
Visso MC 17 1107 12654
Ussita MC 18 444 13098
Cittareale RI 18 482 13580
Montemonaco AP 19 604 14184
Poggiodomo PG 19 117 14301
Cerreto di Spoleto PG 20 1075 15376

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
48 Km NE of Terni (111501 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
72 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km W of Pescara (121014 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
96 Km NW of Chieti (51815 inhabitants)
97 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 1.5 2020-05-21
15:43:13
42.78 13.15 10 2020-05-21
15:54:04
Sala Sismica INGV-Roma 79414421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-21 15:43:13 ± 0.07
Latitude 42.78 ± 0.00
Longitude 13.15 ± 0.01
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 79414421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 608
Semi-minor axis of confidence ellipse (meter) 366
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 92
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.36872
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0
Num. used stations 4
Type of magnitude ML
Reference to an origin 79414421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-21 15:54:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ACATE.EHZ. 2020-05-21T15:45:34.96 3.0 undecidable manual Sg 7.68 0
IV.ECTS.HHZ. 2020-05-21T15:45:18.28 3.0 undecidable manual Sg 6.7 0
OX.CIMO.HHZ. 2020-05-21T15:44:53.69 3.0 undecidable manual Sn 0.64 0
IV.ORI.HHZ. 2020-05-21T15:44:51.18 3.0 undecidable manual Sg 6.72 0
XK.GIZZ.HHZ. 2020-05-21T15:44:46.05 3.0 undecidable manual Sn -9.99 0
XK.GIZZ.HHZ. 2020-05-21T15:44:15.60 3.0 negative manual Pg 8.18 0
GU.RNCA.HHZ. 2020-05-21T15:44:08.63 3.0 negative manual Pg 13.5 0
IV.QLNO.HHZ. 2020-05-21T15:44:05.33 3.0 undecidable manual Pg 6.54 0
IV.CAR1.HHZ. 2020-05-21T15:43:54.03 3.0 positive manual Pn -9.99 0
GU.GENL.EHZ. 2020-05-21T15:43:53.97 3.0 negative manual Pn -0.46 0
IV.SBPO.HNZ. 2020-05-21T15:43:50.49 3.0 positive manual Pn 0.79 0
IV.CAVE.HHZ. 2020-05-21T15:43:48.61 3.0 positive manual Pg 1.57 0
IV.MIDA.HHZ. 2020-05-21T15:43:47.98 3.0 undecidable manual Sg -1.1 0
IV.IMOL.HNZ. 2020-05-21T15:43:45.91 3.0 positive manual Pg 7.86 0
IV.VENT.EHZ. 2020-05-21T15:43:44.93 3.0 undecidable manual Sg -8.62 0
IV.PZUN.HHZ. 2020-05-21T15:43:42.61 3.0 negative manual Pn -6.06 0
IV.CAFE.HHZ. 2020-05-21T15:43:39.18 3.0 undecidable manual Pg -1.65 0
IV.PTRJ.HNZ. 2020-05-21T15:43:35.68 3.0 undecidable manual Pg 3.52 0
IV.FIR.HHZ. 2020-05-21T15:43:34.11 3.0 undecidable manual Pg 1.51 0
IV.MTMR.EHZ. 2020-05-21T15:43:28.97 3.0 undecidable manual Pn -9.99 0
IV.GATE.HHZ. 2020-05-21T15:43:27.43 3.0 negative manual Pn -7.28 0
IV.CSP1.EHZ. 2020-05-21T15:43:25.26 0.3 undecidable manual S 7 0.3094 50 0.21 70
IV.PTQR.HHZ. 2020-05-21T15:43:22.42 3.0 undecidable manual Sn -4.93 0
IV.MMO1.EHZ. 2020-05-21T15:43:20.44 0.3 undecidable manual S 48 0.1718 118 -0.28 70
IV.TERO.HHZ. 2020-05-21T15:43:20.85 0.6 undecidable manual P 116 0.3687 50 -0.21 46
IV.MC2.EHE. 2020-05-21T15:43:19.58 0.3 undecidable manual S 12 0.1295 125 0.24 72
IV.CSP1.EHZ. 2020-05-21T15:43:19.84 0.1 undecidable manual P 7 0.3094 50 -0.21 93
IV.CESI.HHZ. 2020-05-21T15:43:19.62 0.1 undecidable manual P 321 0.2851 50 -0.02 97
IV.FDMO.HHZ. 2020-05-21T15:43:19.00 0.1 undecidable manual P 349 0.2563 50 -0.14 95
IV.RM33.EHN. 2020-05-21T15:43:19.73 0.3 undecidable manual P 171 0.2788 50 0.2 70
IV.LNSS.HHE. 2020-05-21T15:43:18.06 0.3 undecidable manual P 204 0.1996 115 -0.04 73
IV.T1299.EHN. 2020-05-21T15:43:17.69 0.1 undecidable manual P 148 0.1781 117 0.02 99
IV.NRCA.HHZ. 2020-05-21T15:43:17.12 0.3 undecidable manual S 330 0.0567 148 -0.25 72
IV.MMO1.EHZ. 2020-05-21T15:43:17.67 0.1 undecidable manual P 48 0.1718 118 0.12 97
IV.MC2.EHE. 2020-05-21T15:43:16.94 0.1 undecidable manual P 12 0.1295 125 0.19 96
TV.SF01.EHZ. 2020-05-21T15:43:16.62 3.0 negative manual P -2.87 0
IV.NRCA.HHZ. 2020-05-21T15:43:15.69 0.1 undecidable manual P 330 0.0567 148 0.07 100
IV.SAMA.EHZ. 2020-05-21T15:43:07.39 3.0 undecidable manual P -3.97 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.4 0.0004341789 0.128 AML other m 2020-05-21T15:43:17.45
IV.NRCA.HNE. ML:1.4 0.0004264863 0.1152 AML other m 2020-05-21T15:43:17.45
IV.NRCA.HNN. ML:1.5 0.0004568565 0.128 AML other m 2020-05-21T15:43:17.32
IV.NRCA.HHN. ML:1.5 0.0005421436 0.128 AML other m 2020-05-21T15:43:17.31
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