Earthquake with magnitude of ML 1.0 on date 14-08-2020 and time 05:50:27 (Italy) in region 5 km S Norcia (PG)

A magnitude ML 1.0 earthquake occured in region: 5 km S Norcia (PG), on

  • 14-08-2020 03:50:27 (UTC)
  • 14-08-2020 05:50:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.75, 13.11 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 5 4957 4957
Cascia PG 9 3217 8174
Accumoli RI 13 667 8841
Poggiodomo PG 15 117 8958
Preci PG 15 724 9682
Cittareale RI 16 482 10164
Arquata del Tronto AP 16 1178 11342
Castelsantangelo sul Nera MC 16 281 11623
Monteleone di Spoleto PG 17 599 12222
Cerreto di Spoleto PG 17 1075 13297
Visso MC 20 1107 14404

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km SE of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
71 Km SE of Perugia (166134 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
91 Km N of Tivoli (56533 inhabitants)
96 Km W of Pescara (121014 inhabitants)
98 Km W of Chieti (51815 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 1.0 2020-08-14
03:50:27
42.75 13.11 11 2020-08-14
03:56:16
Sala Sismica INGV-Roma 81956741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-14 03:50:27 ± 0.06
Latitude 42.75 ± 0.00
Longitude 13.11 ± 0.01
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 81956741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 722
Semi-minor axis of confidence ellipse (meter) 323
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 285
Circular confidence region, given by single value of horizontal uncertainty (meter) 720
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 15
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) 0.38671
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 81956741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-14 03:56:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.IFOR.HHZ. 2020-08-14T03:51:25.63 3.0 undecidable manual Sn -5.51 0
IV.SGG.HHZ. 2020-08-14T03:51:21.69 3.0 undecidable manual Sg 1.59 0
IV.CSNT.HHZ. 2020-08-14T03:50:54.62 3.0 positive manual Pn 0.88 0
IV.SSP9.EHZ. 2020-08-14T03:50:50.44 3.0 negative manual P 2.6 0
IV.MURB.HHZ. 2020-08-14T03:50:49.68 3.0 undecidable manual S -0.23 0
IV.ARVD.HHZ. 2020-08-14T03:50:40.66 3.0 positive manual P -1.11 0
IV.MMO1.EHZ. 2020-08-14T03:50:35.99 0.3 undecidable manual S 48 0.2167 50 -0.09 73
IV.MF5.EHZ. 2020-08-14T03:50:34.98 0.3 undecidable manual P 48 0.3489 50 0.44 66
IV.MC2.EHZ. 2020-08-14T03:50:34.77 0.3 undecidable manual S 21 0.1691 120 0.18 73
IV.GAVE.EHZ. 2020-08-14T03:50:34.43 0.3 undecidable manual S 249 0.1682 120 -0.13 73
IV.GUMA.HHZ. 2020-08-14T03:50:34.79 0.3 undecidable manual P 28 0.3516 50 0.2 69
IV.LNSS.HHZ. 2020-08-14T03:50:34.26 0.3 undecidable manual S 198 0.1583 121 0.04 75
IV.TERO.HHZ. 2020-08-14T03:50:34.86 0.3 undecidable manual P 109 0.3867 50 -0.33 67
IV.FDMO.HHZ. 2020-08-14T03:50:33.25 0.1 undecidable manual P 357 0.2842 50 -0.18 95
IV.ARRO.EHZ. 2020-08-14T03:50:33.70 3.0 positive manual P -0.59 0
IV.MMO1.EHZ. 2020-08-14T03:50:32.11 0.6 positive manual P 48 0.2167 50 -0.18 48
IV.RM33.EHZ. 2020-08-14T03:50:32.92 0.3 undecidable manual P 162 0.2563 50 -0.03 73
IV.LNSS.HHZ. 2020-08-14T03:50:31.31 0.1 undecidable manual P 198 0.1583 121 0.1 98
IV.MC2.EHZ. 2020-08-14T03:50:31.44 0.1 undecidable manual P 21 0.1691 120 0.01 100
IV.GAVE.EHZ. 2020-08-14T03:50:31.51 0.3 undecidable manual P 249 0.1682 120 0.1 73
IV.NRCA.HHZ. 2020-08-14T03:50:31.80 0.1 undecidable manual S 3 0.0809 140 -0.13 98
IV.NRCA.HHZ. 2020-08-14T03:50:30.00 0.1 undecidable manual P 3 0.0809 140 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.8 0.000822 0.16 AML other m 2020-08-14T03:50:31.95
IV.NRCA.HHN. ML:1.4 0.0003515 1.06 AML other m 2020-08-14T03:50:32.34
IV.GAVE.EHN. ML:1.5 0.0002445 0.32 AML other m 2020-08-14T03:50:35.17
IV.LNSS.HHN. ML:1.3 0.000182 0.72 AML other m 2020-08-14T03:50:35.56
IV.LNSS.HHE. ML:1.3 0.0001615 0.98 AML other m 2020-08-14T03:50:35.36
IV.GAVE.EHE. ML:1.4 0.0002055 0.42 AML other m 2020-08-14T03:50:35.72
IV.FDMO.HHN. ML:0.7 2.375E-5 0.94 AML other m 2020-08-14T03:50:38.03
IV.FDMO.HHE. ML:0.7 2.505E-5 0.76 AML other m 2020-08-14T03:50:38.05
IV.RM33.EHN. ML:0.8 3.205E-5 0.88 AML other m 2020-08-14T03:50:38.61
IV.RM33.EHE. ML:0.7 2.655E-5 0.62 AML other m 2020-08-14T03:50:38.81
IV.ARRO.EHN. ML:0.9 2.825E-5 1.3 AML other m 2020-08-14T03:50:39.84
IV.ARRO.EHE. ML:0.8 2.67E-5 0.42 AML other m 2020-08-14T03:50:40.63
IV.GUMA.HHN. ML:1.2 4.785E-5 1.32 AML other m 2020-08-14T03:50:40.31
IV.TERO.HHN. ML:0.9 2.465E-5 1.1 AML other m 2020-08-14T03:50:41.21
IV.TERO.HHE. ML:0.7 1.465E-5 1.5 AML other m 2020-08-14T03:50:42.01
IV.GUMA.HHE. ML:1.2 5.5E-5 0.48 AML other m 2020-08-14T03:50:44.21
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
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