Earthquake with magnitude of ML 0.5 on date 22-09-2019 and time 01:48:30 (Italy) in region 8 km E Norcia (PG)

A magnitude ML 0.5 earthquake occured in region: 8 km E Norcia (PG), on

  • 21-09-2019 23:48:30 (UTC)
  • 22-09-2019 01:48:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.81, 13.19 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 8 4957 4957
Arquata del Tronto AP 10 1178 6135
Castelsantangelo sul Nera MC 10 281 6416
Montegallo AP 12 523 6939
Accumoli RI 14 667 7606
Preci PG 15 724 8330
Montemonaco AP 15 604 8934
Ussita MC 16 444 9378
Visso MC 16 1107 10485
Cascia PG 18 3217 13702
Acquasanta Terme AP 18 2916 16618
Montefortino FM 19 1178 17796

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
52 Km NE of Terni (111501 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
73 Km E of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km W of Pescara (121014 inhabitants)
94 Km S of Ancona (100861 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km E of Viterbo (67173 inhabitants)
99 Km NE of Tivoli (56533 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 0.5 2019-09-21
23:48:30
42.81 13.19 10 2019-09-22
00:04:38
Sala Sismica INGV-Roma 72636831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-21 23:48:30 ± 0.05
Latitude 42.81 ± 0.00
Longitude 13.19 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72636831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 381
Semi-minor axis of confidence ellipse (meter) 244
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
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) 61
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.35613
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 14
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 72636831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-22 00:04:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2019-09-21T23:48:43.53 0.6 undecidable manual S 121 0.3561 50 -0.28 51
IV.RM33.EHZ. 2019-09-21T23:48:42.18 0.3 undecidable manual S 177 0.3013 50 0 82
IV.SSFR.HHZ. 2019-09-21T23:48:41.76 3.0 undecidable manual P -0.05 0
IV.CESI.HNZ. 2019-09-21T23:48:41.74 0.6 undecidable manual S 313 0.2869 50 -0.01 55
IV.MF5.EHZ. 2019-09-21T23:48:41.73 0.3 undecidable manual S 48 0.2653 50 0.6 71
IV.LNSS.HNZ. 2019-09-21T23:48:40.25 0.3 undecidable manual S 208 0.2347 50 0.04 82
IV.GAVE.HNZ. 2019-09-21T23:48:40.78 0.6 undecidable manual S 242 0.2473 50 0.19 53
IV.FDMO.HHZ. 2019-09-21T23:48:40.16 0.3 undecidable manual S 342 0.2392 50 -0.19 80
IT.MTCL.HGZ. 2019-09-21T23:48:39.85 0.6 undecidable manual S 323 0.2311 50 -0.27 52
IV.SMA1.EHZ. 2019-09-21T23:48:39.11 0.3 undecidable manual S 149 0.2077 114 -0.21 80
IV.TERO.HHZ. 2019-09-21T23:48:38.24 0.3 undecidable manual P 121 0.3561 50 0.02 81
IV.T1299.EHZ. 2019-09-21T23:48:38.67 0.3 undecidable manual S 159 0.188 116 0.07 82
IV.CESI.HNZ. 2019-09-21T23:48:37.00 0.6 undecidable manual P 313 0.2869 50 -0.03 54
IV.MTRA.HNZ. 2019-09-21T23:48:37.31 0.6 undecidable manual S 109 0.1601 120 -0.34 52
IV.GAVE.HNZ. 2019-09-21T23:48:36.37 0.6 undecidable manual P 242 0.2473 50 0.01 55
IV.FDMO.HHZ. 2019-09-21T23:48:36.07 0.3 undecidable manual P 342 0.2392 50 -0.15 80
IV.MMO1.EHZ. 2019-09-21T23:48:36.54 0.3 undecidable manual S 48 0.134 124 -0.27 80
IV.RM33.EHZ. 2019-09-21T23:48:36.81 0.3 undecidable manual P 177 0.3013 50 -0.46 74
IV.MF5.EHZ. 2019-09-21T23:48:36.95 0.3 undecidable manual P 48 0.2653 50 0.29 78
IV.LNSS.HNZ. 2019-09-21T23:48:36.23 0.3 undecidable manual P 208 0.2347 50 0.09 81
IV.SMA1.EHZ. 2019-09-21T23:48:35.55 0.3 undecidable manual P 149 0.2077 114 -0.08 82
IT.MTCL.HGZ. 2019-09-21T23:48:35.94 0.3 undecidable manual P 323 0.2311 50 -0.15 80
IV.T1299.EHZ. 2019-09-21T23:48:35.72 0.1 undecidable manual P 159 0.188 116 0.51 100
IV.NRCA.HNZ. 2019-09-21T23:48:34.72 0.3 undecidable manual S 293 0.0612 146 -0.07 84
IV.MTRA.HNZ. 2019-09-21T23:48:34.61 0.6 undecidable manual P 109 0.1601 120 -0.05 55
IV.MMO1.EHZ. 2019-09-21T23:48:34.20 0.3 undecidable manual P 48 0.134 124 0.03 84
IV.NRCA.HNZ. 2019-09-21T23:48:33.22 0.3 undecidable manual P 293 0.0612 146 0.21 82
IV.MC2.EHZ. 2019-09-21T23:48:33.81 0.3 undecidable manual P 359 0.1016 132 0.2 81
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0.5 1.8422905E-5 0.32 AML other m 2019-09-21T23:48:40.83
IV.SMA1.EHN. ML:0.4 1.559853E-5 0.1024 AML other m 2019-09-21T23:48:40.26
IV.FDMO.HHE. ML:0.4 1.521651E-5 0.1664 AML other m 2019-09-21T23:48:40.38
IV.FDMO.HHN. ML:0.4 1.578717E-5 0.2048 AML other m 2019-09-21T23:48:40.70
IV.RM33.EHE. ML:0.6 1.55886065E-5 0.064 AML other m 2019-09-21T23:48:43.27
IV.RM33.EHN. ML:0.4 9.745637E-6 0.2176 AML other m 2019-09-21T23:48:43.62
IV.TERO.HHE. ML:0.5 9.8671665E-6 0.0768 AML other m 2019-09-21T23:48:43.93
IV.TERO.HHN. ML:0.5 1.2434438E-5 0.064 AML other m 2019-09-21T23:48:44.70
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