Earthquake with magnitude of ML 0.5 on date 02-08-2020 and time 05:45:11 (Italy) in region 7 km E Norcia (PG)

A magnitude ML 0.5 earthquake occured in region: 7 km E Norcia (PG), on

  • 02-08-2020 03:45:11 (UTC)
  • 02-08-2020 05:45:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.78, 13.18 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 7 4957 4957
Arquata del Tronto AP 10 1178 6135
Accumoli RI 11 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Montegallo AP 14 523 7606
Cascia PG 16 3217 10823
Preci PG 16 724 11547
Montemonaco AP 17 604 12151
Visso MC 18 1107 13258
Ussita MC 18 444 13702
Acquasanta Terme AP 19 2916 16618
Cittareale RI 19 482 17100
Amatrice RI 19 2657 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
50 Km NE of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
74 Km E of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km W of Pescara (121014 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km S of Ancona (100861 inhabitants)
97 Km NE of Tivoli (56533 inhabitants)
97 Km E of Viterbo (67173 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 0.5 2020-08-02
03:45:11
42.79 13.18 11 2020-08-02
04:01:14
Sala Sismica INGV-Roma 81566321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-02 03:45:11 ± 0.06
Latitude 42.79 ± 0.00
Longitude 13.18 ± 0.00
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81566321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 379
Semi-minor axis of confidence ellipse (meter) 114
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 89
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.34894
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 12
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 81566321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-02 04:01:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OT.TAR1.HHZ. 2020-08-02T03:47:11.62 3.0 undecidable manual Sg 27.059999 0
IV.SERS.HHZ. 2020-08-02T03:47:01.35 3.0 undecidable manual Sn -2.91 0
IV.CAGR.HHZ. 2020-08-02T03:46:26.39 3.0 undecidable manual Pg 4.52 0
IV.IST3.HHZ. 2020-08-02T03:46:23.99 3.0 negative manual Pg 15.8 0
IV.AGST.EHZ. 2020-08-02T03:46:20.75 3.0 undecidable manual Pn -7.66 0
IV.TDS.HHZ. 2020-08-02T03:46:12.86 3.0 undecidable manual Pg 9.83 0
IX.MNT3.HHZ.02 2020-08-02T03:46:08.00 3.0 undecidable manual Sn -2.49 0
IV.FIU.EHZ. 2020-08-02T03:46:07.35 3.0 undecidable manual Sg -0.15 0
IV.QLNO.HHZ. 2020-08-02T03:45:46.14 3.0 positive manual Pn -9.99 0
IV.SGG.HHZ. 2020-08-02T03:45:36.78 3.0 positive manual Pg 4.44 0
IV.MPAG.HNZ. 2020-08-02T03:45:34.24 3.0 undecidable manual Sn -1.59 0
IV.TERO.HHZ. 2020-08-02T03:45:24.74 0.3 undecidable manual S 118 0.3489 91 0.12 71
IV.CSP1.EHZ. 2020-08-02T03:45:23.45 0.1 undecidable manual S 3 0.3067 91 0.08 96
IV.MF5.EHZ. 2020-08-02T03:45:23.35 0.3 undecidable manual S 45 0.2869 91 0.58 65
IV.RM33.EHZ. 2020-08-02T03:45:22.59 0.3 undecidable manual S 175 0.277 91 0.11 72
IV.FDMO.HHZ. 2020-08-02T03:45:21.76 0.1 undecidable manual S 344 0.2608 91 -0.24 94
IV.GAVE.EHZ. 2020-08-02T03:45:21.15 0.1 undecidable manual S 246 0.2311 91 0.02 97
IV.LNSS.HNE. 2020-08-02T03:45:20.44 0.3 undecidable manual S 210 0.2104 92 -0.06 74
IV.SMA1.EHZ. 2020-08-02T03:45:19.68 0.1 undecidable manual S 144 0.1907 92 -0.25 94
IV.T1299.HNZ. 2020-08-02T03:45:19.43 0.1 undecidable manual S 154 0.1673 93 0.19 96
IV.TERO.HHZ. 2020-08-02T03:45:19.19 0.1 undecidable manual P 118 0.3489 91 -0.02 96
IV.MC2.EHZ. 2020-08-02T03:45:18.17 0.1 undecidable manual S 2 0.1259 102 0.14 98
IV.MF5.EHZ. 2020-08-02T03:45:18.13 0.3 undecidable manual P 45 0.2869 91 -0.01 73
IV.MMO1.EHZ. 2020-08-02T03:45:18.70 0.1 undecidable manual S 43 0.1556 94 -0.19 95
IV.CSP1.EHZ. 2020-08-02T03:45:18.39 0.1 undecidable manual P 3 0.3067 91 -0.1 95
IV.GAVE.EHZ. 2020-08-02T03:45:17.53 0.1 undecidable manual P 246 0.2311 91 0.34 91
IV.RM33.EHZ. 2020-08-02T03:45:17.91 0.3 undecidable manual P 175 0.277 91 -0.06 72
IV.FDMO.HHZ. 2020-08-02T03:45:17.52 0.1 undecidable manual P 344 0.2608 91 -0.18 95
IV.T1299.HNZ. 2020-08-02T03:45:16.36 0.1 undecidable manual P 154 0.1673 93 0.26 95
IV.APEC.HHZ. 2020-08-02T03:45:16.61 3.0 undecidable manual P -6.93 0
IV.LNSS.HNE. 2020-08-02T03:45:16.90 0.3 undecidable manual P 210 0.2104 92 0.07 73
IV.NRCA.HHZ. 2020-08-02T03:45:16.37 0.1 undecidable manual S 314 0.0701 134 -0.19 97
IV.MMO1.EHZ. 2020-08-02T03:45:15.83 0.1 undecidable manual P 43 0.1556 94 -0.07 98
IV.MC2.EHZ. 2020-08-02T03:45:15.54 0.1 undecidable manual P 2 0.1259 102 0.14 98
IV.SMA1.EHZ. 2020-08-02T03:45:15.87 0.1 undecidable manual P 144 0.1907 92 -0.63 85
IV.NRCA.HHZ. 2020-08-02T03:45:14.65 0.1 positive manual P 314 0.0701 134 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.1 0.0001749827 0.1024 AML other m 2020-08-02T03:45:16.92
IV.NRCA.HHN. ML:1.2 0.0002228399 0.1024 AML other m 2020-08-02T03:45:17.01
IV.NRCA.HNE. ML:1.1 0.0001588569 0.0928 AML other m 2020-08-02T03:45:16.88
IV.NRCA.HNN. ML:1.2 0.00020473091 0.08 AML other m 2020-08-02T03:45:17.01
IV.SMA1.EHE. ML:0.4 1.6595325E-5 0.0992 AML other m 2020-08-02T03:45:20.07
IV.SMA1.EHN. ML:0.6 2.319758E-5 0.1408 AML other m 2020-08-02T03:45:19.93
IV.FDMO.HHE. ML:0.3 7.897625E-6 0.16 AML other m 2020-08-02T03:45:22.88
IV.FDMO.HHN. ML:0.3 9.101898E-6 0.2592 AML other m 2020-08-02T03:45:22.54
IV.GAVE.EHE. ML:0.2 1.0711641E-5 0.1792 AML other m 2020-08-02T03:45:23.24
IV.GAVE.EHN. ML:0.2 1.0799535E-5 0.0992 AML other m 2020-08-02T03:45:22.68
IV.RM33.EHE. ML:0.3 7.811511E-6 0.6976 AML other m 2020-08-02T03:45:21.62
IV.RM33.EHN. ML:0.3 7.8363395E-6 0.1408 AML other m 2020-08-02T03:45:24.03
IV.TERO.HHE. ML:0.4 1.206018E-5 0.08 AML other m 2020-08-02T03:45:25.41
IV.TERO.HHN. ML:0.4 9.717805E-6 0.08 AML other m 2020-08-02T03:45:25.09
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