ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.1 on date 24-02-2019 and time 17:52:32 (Italy) in region 7 km SE Norcia (PG)

A magnitude ML 1.1 earthquake occured in region: 7 km SE Norcia (PG), on

  • 24-02-2019 16:52:32 (UTC)
  • 24-02-2019 17:52:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.76, 13.16 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 7 4957 4957
Accumoli RI 10 667 5624
Arquata del Tronto AP 11 1178 6802
Cascia PG 13 3217 10019
Cittareale RI 15 482 10501
Castelsantangelo sul Nera MC 16 281 10782
Preci PG 17 724 11506
Montegallo AP 17 523 12029
Amatrice RI 18 2657 14686
Poggiodomo PG 19 117 14803

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km SE of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
47 Km E of Terni (111501 inhabitants)
49 Km NW of L'Aquila (69753 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
91 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km W of Pescara (121014 inhabitants)
93 Km NE of Tivoli (56533 inhabitants)
94 Km W of Chieti (51815 inhabitants)
94 Km E of Viterbo (67173 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 2019-02-24
16:52:32
42.76 13.16 10 2019-02-24
17:00:15
Sala Sismica INGV-Roma 65922141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-24 16:52:32 ± 0.09
Latitude 42.76 ± 0.00
Longitude 13.16 ± 0.00
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65922141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 410
Semi-minor axis of confidence ellipse (meter) 84
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 294
Circular confidence region, given by single value of horizontal uncertainty (meter) 410
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
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) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 0.31117
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 12
Type of magnitude ML
Reference to an origin 65922141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-24 17:00:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2019-02-24T16:52:41.12 0.3 undecidable manual S 252 0.205 113 -0.47 67
IV.MMO1.EHZ. 2019-02-24T16:52:40.88 0.1 undecidable manual S 40 0.188 115 -0.11 96
IV.MC2.EHZ. 2019-02-24T16:52:40.26 0.1 undecidable manual S 8 0.1565 119 0.36 92
IV.MTRA.EHZ. 2019-02-24T16:52:40.12 0.1 undecidable manual S 90 0.1736 117 -0.36 92
IV.T1299.EHE. 2019-02-24T16:52:40.01 0.1 undecidable manual S 144 0.1511 120 0.28 94
IV.LNSS.HHZ. 2019-02-24T16:52:40.67 0.3 undecidable manual S 210 0.1772 116 0.08 73
IV.RM33.EHE. 2019-02-24T16:52:39.09 0.3 undecidable manual P 171 0.25 50 0.22 70
IV.CESI.HHE. 2019-02-24T16:52:39.84 0.3 undecidable manual P 323 0.3112 50 -0.06 71
IV.MTRA.EHZ. 2019-02-24T16:52:37.17 0.1 undecidable manual P 90 0.1736 117 -0.14 96
IV.T1299.EHE. 2019-02-24T16:52:37.03 0.3 undecidable manual P 144 0.1511 120 0.15 72
IV.LNSS.HHZ. 2019-02-24T16:52:37.39 0.1 undecidable manual P 210 0.1772 116 0.01 98
IV.MMO1.EHZ. 2019-02-24T16:52:37.44 0.1 undecidable manual P 40 0.188 115 -0.17 95
IV.GAVE.EHZ. 2019-02-24T16:52:37.87 0.3 undecidable manual P 252 0.205 113 -0.09 72
IV.MC2.EHZ. 2019-02-24T16:52:37.06 0.1 undecidable manual P 8 0.1565 119 0.08 97
IV.NRCA.HHZ. 2019-02-24T16:52:37.69 0.1 undecidable manual S 337 0.0845 136 0.02 100
IV.NRCA.HHZ. 2019-02-24T16:52:35.86 0.1 negative manual P 337 0.0845 136 0.16 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.6 0.0004785 0.08 AML other m 2019-02-24T16:52:38.03
IV.NRCA.HHN. ML:1.4 0.000374 0.14 AML other m 2019-02-24T16:52:37.75
IV.NRCA.HNE. ML:1.5 0.00043773285 0.0896 AML other m 2019-02-24T16:52:38.07
IV.NRCA.HNN. ML:1.3 0.00027801695 0.0512 AML other m 2019-02-24T16:52:37.77
IV.LNSS.HHE. ML:1 8.662686E-5 0.1792 AML other m 2019-02-24T16:52:40.74
IV.LNSS.HHN. ML:1 8.7218235E-5 0.1536 AML other m 2019-02-24T16:52:40.95
IV.LNSS.HNE. ML:1.1 9.213094E-5 0.3456 AML other m 2019-02-24T16:52:41.00
IV.LNSS.HNN. ML:1 7.9215795E-5 0.1536 AML other m 2019-02-24T16:52:40.95
IV.GAVE.EHE. ML:0.6 2.4723365E-5 0.2816 AML other m 2019-02-24T16:52:41.41
IV.GAVE.EHN. ML:0.7 3.4048185E-5 0.2304 AML other m 2019-02-24T16:52:41.65
IV.GAVE.HNE. ML:0.9 5.1509835E-5 0.4736 AML other m 2019-02-24T16:52:41.16
IV.GAVE.HNN. ML:1 6.3721805E-5 0.4992 AML other m 2019-02-24T16:52:41.15
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