Earthquake with magnitude of ML 0.9 on date 18-10-2019 and time 15:40:56 (Italy) in region 6 km E Norcia (PG)

A magnitude ML 0.9 earthquake occured in region: 6 km E Norcia (PG), on

  • 18-10-2019 13:40:56 (UTC)
  • 18-10-2019 15:40:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8, 13.17 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 6 4957 4957
Arquata del Tronto AP 11 1178 6135
Castelsantangelo sul Nera MC 11 281 6416
Accumoli RI 13 667 7083
Preci PG 14 724 7807
Montegallo AP 14 523 8330
Cascia PG 16 3217 11547
Visso MC 16 1107 12654
Ussita MC 17 444 13098
Montemonaco AP 17 604 13702
Acquasanta Terme AP 20 2916 16618
Cittareale RI 20 482 17100

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
50 Km NE of Terni (111501 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
72 Km E of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
93 Km W of Pescara (121014 inhabitants)
96 Km NW of Chieti (51815 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
98 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 0.9 2019-10-18
13:40:56
42.8 13.17 10 2019-10-18
13:54:18
Sala Sismica INGV-Roma 73324681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-18 13:40:56 ± 0.31
Latitude 42.80 ± 0.01
Longitude 13.17 ± 0.02
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 73324681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1830
Semi-minor axis of confidence ellipse (meter) 1200
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 1830
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 167
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.29498
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.5
Num. used stations 8
Type of magnitude ML
Reference to an origin 73324681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-18 13:54:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
HL.VLS.HHZ. 2019-10-18T13:42:44.36 3.0 positive manual Pn 6.48 0
CR.ZAG.BHZ. 2019-10-18T13:42:38.48 3.0 undecidable manual Sn 0.12 0
IV.PRMA.HHZ. 2019-10-18T13:42:29.01 3.0 undecidable manual Sg 3.93 0
CR.STON.BHZ. 2019-10-18T13:42:25.98 3.0 undecidable manual Sn 1.9 0
IV.ACATE.HNZ. 2019-10-18T13:42:19.47 3.0 undecidable manual Pn 0.65 0
IV.MARS.EHZ. 2019-10-18T13:42:13.67 3.0 positive manual Pg 4.91 0
IV.MOCL.EHZ. 2019-10-18T13:41:56.92 3.0 undecidable manual Sn -4.52 0
IV.PRMA.HHZ. 2019-10-18T13:41:52.63 3.0 undecidable manual Pg 7.37 0
IV.SPS2.HHZ. 2019-10-18T13:41:52.39 3.0 negative manual Pn -3.52 0
CR.STON.BHZ. 2019-10-18T13:41:48.90 3.0 undecidable manual Pn 4.2 0
IT.VNF1.HGZ. 2019-10-18T13:41:33.13 3.0 undecidable manual S -3.53 0
IV.CSNT.HHZ. 2019-10-18T13:41:25.82 3.0 undecidable manual Pg -1.18 0
IV.MAON.HHZ. 2019-10-18T13:41:23.75 3.0 undecidable manual Pg -2 0
IV.CSP1.EHN. 2019-10-18T13:41:08.40 0.6 undecidable manual S 5 0.295 50 0.22 50
IV.FDMO.HHZ. 2019-10-18T13:41:06.70 0.6 undecidable manual S 346 0.2464 50 -0.04 52
IV.MTRA.EHZ. 2019-10-18T13:41:05.03 0.6 undecidable manual S 104 0.17 119 0.74 43
IV.FDMO.HHZ. 2019-10-18T13:41:03.16 0.6 undecidable manual P 346 0.2464 50 0.61 46
IV.MMO1.EHZ. 2019-10-18T13:41:03.30 0.3 undecidable manual S 48 0.1529 122 -0.42 74
IV.MC2.EHZ. 2019-10-18T13:41:02.39 0.3 undecidable manual S 6 0.1151 129 -0.14 79
IV.CSP1.EHN. 2019-10-18T13:41:02.76 0.3 undecidable manual P 5 0.295 50 -0.62 68
IV.MTRA.EHZ. 2019-10-18T13:41:01.69 0.3 undecidable manual P 104 0.17 119 0.55 70
IV.NRCA.HHZ. 2019-10-18T13:41:00.73 0.6 undecidable manual S 311 0.0558 149 -0.28 52
IV.MC2.EHZ. 2019-10-18T13:41:00.48 1.0 negative manual P 6 0.1151 129 0.37 25
IV.SMA1.EHZ. 2019-10-18T13:41:00.57 0.3 undecidable manual P 144 0.2059 50 -1.27 52
IV.MMO1.EHZ. 2019-10-18T13:41:00.99 1.0 undecidable manual P 48 0.1529 122 0.18 26
IV.NRCA.HHZ. 2019-10-18T13:40:59.67 0.1 negative manual P 311 0.0558 149 0.43 100
IV.AQU.HHZ. 2019-10-18T13:40:58.15 3.0 undecidable manual S 0
IV.CAMP.HHZ. 2019-10-18T13:40:57.83 3.0 undecidable manual P 0
IV.AQU.HHZ. 2019-10-18T13:40:56.70 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHE. ML:0.4 8.5529035E-6 0.064 AML other m 2019-10-18T13:41:07.21
IV.CAMP.HHN. ML:0.4 8.4367715E-6 0.0768 AML other m 2019-10-18T13:41:07.29
IV.NRCA.HHE. ML:1.4 0.0004150712 0.16 AML other m 2019-10-18T13:41:00.90
IV.NRCA.HHN. ML:1.3 0.00031717165 0.1408 AML other m 2019-10-18T13:41:00.98
IV.NRCA.HNE. ML:1.4 0.00037887105 0.1088 AML other m 2019-10-18T13:41:00.95
IV.NRCA.HNN. ML:1.3 0.00030371505 0.0896 AML other m 2019-10-18T13:41:01.31
IV.FDMO.HHE. ML:0.4 1.2690249E-5 0.1792 AML other m 2019-10-18T13:41:08.51
IV.FDMO.HHN. ML:0.4 1.29001095E-5 0.2752 AML other m 2019-10-18T13:41:06.90
IV.MAON.HHE. ML:2 4.054071E-5 0.704 AML other m 2019-10-18T13:41:25.05
IV.MAON.HHN. ML:1.9 3.6081535E-5 0.9408 AML other m 2019-10-18T13:42:02.96
IV.MAON.HNE. ML:2.5 0.00013201661 0.5952 AML other m 2019-10-18T13:42:17.87
IV.MAON.HNN. ML:2.6 0.0001524178 0.7424 AML other m 2019-10-18T13:41:48.71
IV.CSNT.HHE. ML:1.4 1.1128172E-5 0.0768 AML other m 2019-10-18T13:42:16.91
IV.CSNT.HHN. ML:1.4 1.09463825E-5 0.0832 AML other m 2019-10-18T13:42:08.73
CR.STON.BHE. ML:1.8 6.2990765E-6 0.7616 AML other m 2019-10-18T13:42:48.89
CR.STON.BHN. ML:1.8 7.2321575E-6 0.0832 AML other m 2019-10-18T13:42:52.99
IV.PRMA.HHE. ML:2.9 9.501403E-5 0.1792 AML other m 2019-10-18T13:42:47.25
IV.PRMA.HHN. ML:3 0.00011231885 0.2176 AML other m 2019-10-18T13:42:47.10
IV.MARS.EHE. ML:3.8 0.00011815305 1.2992 AML other m 2019-10-18T13:43:44.78
IV.MARS.EHN. ML:3.6 8.640175E-5 1.3632 AML other m 2019-10-18T13:43:19.94
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