Earthquake with magnitude of ML 1.1 on date 02-02-2020 and time 15:38:17 (UTC) in region 3 km W Norcia (PG)

A magnitude ML 1.1 earthquake occured in region: 3 km W Norcia (PG), on

  • 02-02-2020 15:38:17 (UTC)
  • 02-02-2020 16:38:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.79, 13.06 at 9 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 9 3217 8174
Preci PG 10 724 8898
Cerreto di Spoleto PG 12 1075 9973
Poggiodomo PG 13 117 10090
Castelsantangelo sul Nera MC 14 281 10371
Sellano PG 16 1079 11450
Visso MC 16 1107 12557
Vallo di Nera PG 16 364 12921
Monteleone di Spoleto PG 18 599 13520
Accumoli RI 19 667 14187
Ussita MC 19 444 14631
Sant'Anatolia di Narco PG 19 564 15195
Arquata del Tronto AP 19 1178 16373

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SE of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
55 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
65 Km SE of Perugia (166134 inhabitants)
88 Km E of Viterbo (67173 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
94 Km W of Montesilvano (53738 inhabitants)
100 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
Rev 100 ML 1.1 2020-02-02
15:38:17
42.79 13.06 9 2020-02-02
16:03:25
Sala Sismica INGV-Roma 76136771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-02 15:38:17 ± 0.14
Latitude 42.79 ± 0.00
Longitude 13.06 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76136771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 540
Semi-minor axis of confidence ellipse (meter) 64
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) 540
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
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) 0.30127
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 76136771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-02 16:03:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.FIE.HGZ. 2020-02-02T15:38:53.84 3.0 undecidable manual Sn -1.16 0
IV.RM33.EHZ. 2020-02-02T15:38:29.24 0.3 undecidable manual S 158 0.3013 50 0.02 73
IV.FDMO.HHZ. 2020-02-02T15:38:27.15 0.3 undecidable manual S 5 0.2491 108 -0.23 71
IV.MMO1.EHZ. 2020-02-02T15:38:26.08 0.3 undecidable manual S 60 0.2248 109 -0.42 69
IT.MTCL.HGN. 2020-02-02T15:38:25.86 0.3 undecidable manual S 348 0.2104 111 -0.12 73
IV.LNSS.HHZ. 2020-02-02T15:38:24.78 0.3 undecidable manual S 185 0.1862 113 -0.32 72
IV.RM33.EHZ. 2020-02-02T15:38:24.63 0.1 undecidable manual P 158 0.3013 50 0.44 91
IV.GAVE.EHZ. 2020-02-02T15:38:24.05 0.3 undecidable manual S 232 0.1556 117 0.01 75
IV.MC2.EHZ. 2020-02-02T15:38:24.35 0.3 undecidable manual S 37 0.1547 117 0.32 71
IV.FDMO.HHZ. 2020-02-02T15:38:22.96 0.1 undecidable manual P 5 0.2491 108 -0.17 96
IT.MTCL.HGN. 2020-02-02T15:38:22.41 0.1 undecidable manual P 348 0.2104 111 0.09 99
IV.MMO1.EHZ. 2020-02-02T15:38:22.57 0.1 undecidable manual P 60 0.2248 109 -0.05 99
IV.GAVE.EHZ. 2020-02-02T15:38:21.28 0.1 undecidable manual P 232 0.1556 117 0.08 100
IV.MC2.EHZ. 2020-02-02T15:38:21.42 0.1 undecidable manual P 37 0.1547 117 0.23 97
IV.NRCA.HHZ. 2020-02-02T15:38:21.15 0.3 undecidable manual S 41 0.0603 143 0 76
IV.LNSS.HHZ. 2020-02-02T15:38:21.70 0.1 undecidable manual P 185 0.1862 113 -0.12 99
IV.NRCA.HHZ. 2020-02-02T15:38:19.73 0.1 undecidable manual P 41 0.0603 143 0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.0002975 0.14 AML other m 2020-02-02T15:38:21.23
IV.NRCA.HHE. ML:1.2 0.000304 1.64 AML other m 2020-02-02T15:38:22.84
IV.GAVE.EHN. ML:0.8 5.67E-5 0.64 AML other m 2020-02-02T15:38:24.40
IV.LNSS.HHE. ML:1.1 0.0001 0.12 AML other m 2020-02-02T15:38:25.01
IV.LNSS.HHN. ML:1 7.285E-5 0.3 AML other m 2020-02-02T15:38:25.42
IV.GAVE.EHE. ML:1 8.22E-5 0.2 AML other m 2020-02-02T15:38:26.06
IV.MMUR.HNE. ML:2.7 0.0008895 1.52 AML other m 2020-02-02T15:38:36.12
IV.MMUR.HNN. ML:2.8 0.001035 0.42 AML other m 2020-02-02T15:38:37.38
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