INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.1 on date 09-02-2019 and time 19:02:38 (Italy) in region 5 km SW Norcia (PG)

A magnitude ML 1.1 earthquake occured in region: 5 km SW Norcia (PG), on

  • 09-02-2019 18:02:38 (UTC)
  • 09-02-2019 19:02:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.76, 13.07 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
Cascia PG 6 3217 8174
Poggiodomo PG 12 117 8291
Preci PG 14 724 9015
Cerreto di Spoleto PG 14 1075 10090
Monteleone di Spoleto PG 15 599 10689
Accumoli RI 16 667 11356
Vallo di Nera PG 17 364 11720
Cittareale RI 17 482 12202
Castelsantangelo sul Nera MC 17 281 12483
Arquata del Tronto AP 19 1178 13661
Sellano PG 19 1079 14740
Sant'Anatolia di Narco PG 19 564 15304
Visso MC 20 1107 16411
Scheggino PG 20 461 16872

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SE of Foligno (57155 inhabitants)
41 Km NE of Terni (111501 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
53 Km W of Teramo (54892 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km N of Tivoli (56533 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
99 Km W of Pescara (121014 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 2019-02-09
18:02:38
42.76 13.07 11 2019-02-09
18:07:29
Sala Sismica INGV-Roma 65352141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-09 18:02:38 ± 0.04
Latitude 42.76 ± 0.00
Longitude 13.07 ± 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 65352141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 385
Semi-minor axis of confidence ellipse (meter) 110
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.08544
Epicentral distance of station farthest from the epicenter (degree) 0.36872
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 65352141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-09 18:07:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MOMA.HHZ. 2019-02-09T18:02:53.13 0.1 undecidable manual P 0.3687 6.85 0
IV.CESI.HHZ. 2019-02-09T18:02:49.23 0.1 undecidable manual S 334 0.277 50 -0.04 97
IV.FDMO.HHZ. 2019-02-09T18:02:49.28 0.3 undecidable manual S 3 0.2815 50 -0.12 71
IV.RM33.EHZ. 2019-02-09T18:02:48.88 0.1 undecidable manual S 156 0.268 50 -0.13 95
IV.MC2.EHZ. 2019-02-09T18:02:46.35 0.3 undecidable manual S 29 0.179 118 0.08 73
IV.LNSS.HHZ. 2019-02-09T18:02:45.33 0.1 undecidable manual S 188 0.1538 122 -0.08 98
IV.RM33.EHZ. 2019-02-09T18:02:44.46 0.1 undecidable manual P 156 0.268 50 -0.09 96
IV.GAVE.EHZ. 2019-02-09T18:02:44.96 0.1 undecidable manual S 244 0.143 123 -0.09 98
IV.CESI.HHZ. 2019-02-09T18:02:44.73 0.1 undecidable manual P 334 0.277 50 0.03 97
IV.SMA1.EHZ. 2019-02-09T18:02:44.10 0.1 undecidable manual P 122 0.232 50 0.17 95
IV.FDMO.HHZ. 2019-02-09T18:02:44.80 0.1 undecidable manual P 3 0.2815 50 0.02 97
IV.MC2.EHZ. 2019-02-09T18:02:43.13 0.1 undecidable manual P 29 0.179 118 0.16 96
IV.LNSS.HHZ. 2019-02-09T18:02:42.55 0.1 undecidable manual P 188 0.1538 122 0.08 98
IV.NRCA.HHZ. 2019-02-09T18:02:42.97 0.3 undecidable manual S 23 0.0854 138 -0.39 70
IV.GAVE.EHZ. 2019-02-09T18:02:42.47 0.1 undecidable manual P 244 0.143 123 0.2 96
IV.NRCA.HHZ. 2019-02-09T18:02:41.35 0.1 undecidable manual P 23 0.0854 138 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.2 0.000134 0.4 AML other m 2019-02-09T18:02:45.81
IV.LNSS.HHN. ML:1.2 0.00011955 1.5 AML other m 2019-02-09T18:02:46.84
IV.GAVE.EHE. ML:1.1 0.000116 1.14 AML other m 2019-02-09T18:02:46.16
IV.GAVE.EHN. ML:1.1 0.000117 0.18 AML other m 2019-02-09T18:02:46.25
IV.RM33.EHN. ML:1.1 5.525E-5 0.22 AML other m 2019-02-09T18:02:49.17
IV.RM33.EHE. ML:0.8 3.245E-5 0.66 AML other m 2019-02-09T18:02:50.38
IV.SMA1.EHN. ML:0.8 3.98E-5 1.28 AML other m 2019-02-09T18:02:50.75
IV.SMA1.EHE. ML:1.1 6.945E-5 0.72 AML other m 2019-02-09T18:02:51.26
IV.MOMA.HHN. ML:1.7 0.000184 1.52 AML other m 2019-02-09T18:02:55.04
IV.MOMA.HHE. ML:1.8 0.000216 1.02 AML other m 2019-02-09T18:02:55.48
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